In most automatic transmissions, the torque converter is mated to the pump of the transmission in two places: the input shaft and the stator (also called a stator tube or stator support).
What is it and what does it do?
This splined piece of steel centers the torque converter into the pump, provides lubrication circuits within the pump, and can also stabilize and support the input shaft in some setups. In many OEM applications, such as the powerglide and TH400, the tube is pressed into the pump casting. In high horsepower and torque setups, the stator in the torque converter is receiving tremendous amounts of pressure from the power generated by the engine. This heavy load is placed onto the pump's stator tube.
If this component fails, it will often turn or twist within the pump casting. A visual inspection of the pump's exterior will not indicate any failure. However, the function of the transmission and torque converter can be greatly affected. If your transmission and torque converter have suddenly changed their performance profiles, check the stator tube during a full disassembled inspection to make sure this sometimes overlooked component is operating properly.
What can happen?
1. Changes in torque converter stall speed and operation
2. Extreme heat generation in transmission and torque converter
3. Failure of transmission clutches, bands, and overall performance issues
A spun or broken stator tube can be replaced with an aftermarket version (like the one pictured above). Made from chromoly steel, this is a big improvement over the OEM tubes. However, the tube is still pressed into the pump body, which can fail again in some situations.
The best solution for a racing car or truck is a completely aftermarket pump like our high volume powerglide pump, which features a bolted-in stator support tube. This tube is virtually unbreakable in even the most stressed combinations such as Pro Mod and Monster Truck class racing.
Showing posts with label powerglide. Show all posts
Showing posts with label powerglide. Show all posts
Tuesday, January 27, 2015
Wednesday, August 13, 2014
Car of the Week: Ian Dunaway's 1963 Falcon
Welcome to our Car of the Week series, where we feature BTE customers and fans, and the cars (and trucks) they love to drive and race. Today we're spotlighting Texan Ian Dunaway and his 1963 Falcon.
How did you get into drag racing?
I was very fortunate to get into drag racing at the very young age of 8 years old running Junior Dragsters with my Dad and Mom! They took me to Texas Raceway where they have a Jr. Dragster School for beginners to find out if I liked it, and I knew at that time this was my sport. My dad and my grandpa race as well, so having three generations of racers in the family is kinda cool.
When and where was your first race?
My very first race in a big car was driving my dad’s rear engine dragster running 4.79 @ 142 mph at Wichita Falls, Texas where I had a R/U finish, losing by only .0002 in the final as my competitor and I had the exact same reaction time and ran dead on the dial to the .001 of a second.
Wednesday, July 23, 2014
Car of the Week: Frank Greenough's 1968 Chevelle
Welcome to our Car of the Week series, where we feature BTE customers and fans, and the cars (and trucks) they love to drive and race. Today we chat with Frank Greenough of Idaho Falls, Idaho about his 1968 Chevelle.
How did you get into drag racing?
My family has been racing since I was very young.
When and where was your first race?
1985 in Spokane, Washington
What model/year do you race now?
1968 Chevelle
What's under the hood?
Madcap Racing Engines 565 ci big block Chevy
Labels:
1968 chevelle,
BTE Racing,
drag cars,
drag racing,
powerglide
Thursday, October 31, 2013
Luke Bogacki Clinches 2013 NHRA Lucas Oil Super Comp National Championship
Luke Bogacki is still trying to convince himself it’s real. He’s done the math, and he knows that he’s clinched the 2013 NHRA Lucas Oil Super Comp championship. His friends have offered congratulations. NHRA officials have called to confirm that he will represent them as their champion. He wants to believe it, but the gravity of it all just isn’t sinking in.
Growing up in a racing family, he’s dreamed of this moment for as long as he can remember. And he’s come close before, painfully close, to realizing that dream. In 2010 he triumphantly won his final Super Comp event to take the national lead on a tie-breaker; only to watch Gary Stinnett overtake him by less than one round at the final Lucas Oil Series event of the season. Just last year, Bogacki made the trek from his Southern Illinois home to Las Vegas, NV in pursuit of the crown. There, he needed to make the final round of the event to win the title, but fell a few rounds short of eventual champion Alan Kenny.
“I don’t know how many sheets of paper I’ve wasted since September scribbling out who had a chance to catch me and what they had to do,” laughed Bogacki, who has led the national standings since late June. “Between NHRA and IHRA I think I’ve displayed every top 10 number except the one everyone wants. After a while you get conditioned to thinking it’s just not meant to be. I kept watching the standings and waiting for someone to get hot and pull the rug out from under me.”
Racers did get hot. Ray Miller III made a strong run at the title, but will likely finish 2nd. Kyle Cultrera enjoyed a stellar season and made the battle for the title interesting deep into October, but Bogacki’s 676 point score; likely the highest of any sportsman competitor this season, proved too much to overcome.
Bogacki started his season inauspiciously, with back-to-back first round losses at the NHRA Winternationals in Pomona, CA and Arizona Nationals in Phoenix, AZ. He salvaged his trip to the west coast with a pair of solid divisional performances: a runner-up finish at the Phoenix Lucas Oil Drag Racing Series event, and a fourth round loss in Las Vegas (where he also won Super Gas). He then took 2 months away from the tour surrounding the birth of his firstborn son, Gary. When he hit the road again in late May, the new father caught fire.
Following a third round defeat at the Atlanta Lucas Oil Division Series event, Luke drove to his first Super Comp victory of the season in early June at Chicago’s Route 66 Raceway. A week later, he took runner-up honors at the LODRS event in Cordova, IL. He entered the Summit Racing Equipment Nationals in Norwalk, OH as the points leader, and won that event to put a stranglehold on the championship that he would not relinquish. Bogacki finished his points ledger with a quarterfinal showing at the Lucas Oil Nationals in Brainerd, MN and another runner-up at the divisional level, this time in Bowling Green, KY. As the season neared conclusion, Bogacki also added a pair of runner-up finishes at the national level in his Super Gas Corvette, at the AAA Texas Nationals in Dallas and the AAA Insurance Midwest Nationals near St. Louis.
When asked to pinpoint the difference between his championship season and his past near misses, Bogacki offered little explanation. “I’ve been asking myself the same question. It’s easy to chalk it up to luck or good fortune. And I’ll be the first to admit that I found myself in the right place at the right time a lot this year. But I’ve always been one to want a tangible explanation – something with a little more substance than pure luck. The only thing I can say is that I feel like I’ve raced smarter this year than in years past. I always thought of myself as a really good driver, and I was dependent on my ability; but these days I don’t get to race nearly as much as I did five or ten years ago. I don’t know that I’m necessarily worse behind the wheel; but I’ll be the first to admit that I’m not as sharp. That realization really allowed me to put more faith in my car, which has been better than its driver by far, and to keep things pretty simple from a driving standpoint. I feel like I’m a better racer because of it.”
Bogacki points to his 2013 American Race Cars dragster as the biggest key to his success. The 240” American Chassis is outfitted with a 632 cubic inch Huntsville Engine & Performance powerplant that features a BRODIX aluminum block and new SR20 cylinder heads. The motor includes Wiseco Pistons, a Crane Cam and lifters, Jesel belt drive and rocker arms, Milodon oiling system, and Hedman Hedders featuring Nitroplate coating. The engine is lubricated by Lucas Oil products, protected by a K&N Wrench Off oil filter, and surrounded by a J&J Performance Engine Diaper. The combination is topped by an APD carburetor and fuel system that transfers Renegade 116+ Racing Fuel through Earl’s Ano-Tuff fittings and line. The engine, capable of low 7-second elapsed times, is reigned into the 8.90 Super Comp index thanks to a Dedenbear Throttle Stop and K&R Performance Engineering Pro-Cube delay box and throttle stop timer.
Bogacki monitors all critical functions of the machine thanks to Auto Meter’s Multi-Function Data Logger. His combination also features Moser Axles and brakes, an Ohlins shock, BTE “Top Dragster” transmission and converter, Mickey Thompson Tires and Wheels, a B&M shifter, paint design and application from Todd’s Extreme Paint, as well as products from Dixie Racing Products, Nitrous Express, ISC Racer’s Tape, and JEGS. Bogacki also recognized the staff at Charlie Stewart Race Cars, who built his Super Gas Corvette.
Although he admits he hasn’t completely come to grips with the title of world champion, Bogacki’s experience in the sport helps him put his dream season into perspective.
“It’s kind of surreal, to be honest. I grew up watching guys like Tommy Phillips and Scotty and Edmond Richardson race at our local track. They’ve all had great success in Super Comp and they found a way to make a living driving sportsman race cars. That opened my eyes; and for as long as I can remember that’s all I wanted to do. I used to sit in my room as a kid; most kids were playing video games. I had a practice tree set up, and index cards with the names of racers on the front, and a list of their reaction times from National Dragster on the back. I’d run rounds, races, seasons against those flash cards for hours at a time. I bet I won 100 world championships on that practice tree! It’s just hard to believe it’s come true in real life.”
Bogacki thanked his wife, Jessica and their son Gary for their unwavering support. He also wished to recognize his team’s major marketing partners: ThisIsBracketRacing.com and the Motor City Hot Rod and Racing Expo, as well as associate partners K&N Engineering, Tinsley Drilling & Company, C.A.R.S. Protection Plus, Advanced Product Design (APD), JEGS, Mickey Thompson Tires and Wheels, Bill Taylor Enterprises (BTE), and Product Development Group (makers of AirTek Pressure Systems and Flo-Fast pumps).
Growing up in a racing family, he’s dreamed of this moment for as long as he can remember. And he’s come close before, painfully close, to realizing that dream. In 2010 he triumphantly won his final Super Comp event to take the national lead on a tie-breaker; only to watch Gary Stinnett overtake him by less than one round at the final Lucas Oil Series event of the season. Just last year, Bogacki made the trek from his Southern Illinois home to Las Vegas, NV in pursuit of the crown. There, he needed to make the final round of the event to win the title, but fell a few rounds short of eventual champion Alan Kenny.
“I don’t know how many sheets of paper I’ve wasted since September scribbling out who had a chance to catch me and what they had to do,” laughed Bogacki, who has led the national standings since late June. “Between NHRA and IHRA I think I’ve displayed every top 10 number except the one everyone wants. After a while you get conditioned to thinking it’s just not meant to be. I kept watching the standings and waiting for someone to get hot and pull the rug out from under me.”
Racers did get hot. Ray Miller III made a strong run at the title, but will likely finish 2nd. Kyle Cultrera enjoyed a stellar season and made the battle for the title interesting deep into October, but Bogacki’s 676 point score; likely the highest of any sportsman competitor this season, proved too much to overcome.
Bogacki started his season inauspiciously, with back-to-back first round losses at the NHRA Winternationals in Pomona, CA and Arizona Nationals in Phoenix, AZ. He salvaged his trip to the west coast with a pair of solid divisional performances: a runner-up finish at the Phoenix Lucas Oil Drag Racing Series event, and a fourth round loss in Las Vegas (where he also won Super Gas). He then took 2 months away from the tour surrounding the birth of his firstborn son, Gary. When he hit the road again in late May, the new father caught fire.
Following a third round defeat at the Atlanta Lucas Oil Division Series event, Luke drove to his first Super Comp victory of the season in early June at Chicago’s Route 66 Raceway. A week later, he took runner-up honors at the LODRS event in Cordova, IL. He entered the Summit Racing Equipment Nationals in Norwalk, OH as the points leader, and won that event to put a stranglehold on the championship that he would not relinquish. Bogacki finished his points ledger with a quarterfinal showing at the Lucas Oil Nationals in Brainerd, MN and another runner-up at the divisional level, this time in Bowling Green, KY. As the season neared conclusion, Bogacki also added a pair of runner-up finishes at the national level in his Super Gas Corvette, at the AAA Texas Nationals in Dallas and the AAA Insurance Midwest Nationals near St. Louis.
When asked to pinpoint the difference between his championship season and his past near misses, Bogacki offered little explanation. “I’ve been asking myself the same question. It’s easy to chalk it up to luck or good fortune. And I’ll be the first to admit that I found myself in the right place at the right time a lot this year. But I’ve always been one to want a tangible explanation – something with a little more substance than pure luck. The only thing I can say is that I feel like I’ve raced smarter this year than in years past. I always thought of myself as a really good driver, and I was dependent on my ability; but these days I don’t get to race nearly as much as I did five or ten years ago. I don’t know that I’m necessarily worse behind the wheel; but I’ll be the first to admit that I’m not as sharp. That realization really allowed me to put more faith in my car, which has been better than its driver by far, and to keep things pretty simple from a driving standpoint. I feel like I’m a better racer because of it.”
Bogacki points to his 2013 American Race Cars dragster as the biggest key to his success. The 240” American Chassis is outfitted with a 632 cubic inch Huntsville Engine & Performance powerplant that features a BRODIX aluminum block and new SR20 cylinder heads. The motor includes Wiseco Pistons, a Crane Cam and lifters, Jesel belt drive and rocker arms, Milodon oiling system, and Hedman Hedders featuring Nitroplate coating. The engine is lubricated by Lucas Oil products, protected by a K&N Wrench Off oil filter, and surrounded by a J&J Performance Engine Diaper. The combination is topped by an APD carburetor and fuel system that transfers Renegade 116+ Racing Fuel through Earl’s Ano-Tuff fittings and line. The engine, capable of low 7-second elapsed times, is reigned into the 8.90 Super Comp index thanks to a Dedenbear Throttle Stop and K&R Performance Engineering Pro-Cube delay box and throttle stop timer.
Bogacki monitors all critical functions of the machine thanks to Auto Meter’s Multi-Function Data Logger. His combination also features Moser Axles and brakes, an Ohlins shock, BTE “Top Dragster” transmission and converter, Mickey Thompson Tires and Wheels, a B&M shifter, paint design and application from Todd’s Extreme Paint, as well as products from Dixie Racing Products, Nitrous Express, ISC Racer’s Tape, and JEGS. Bogacki also recognized the staff at Charlie Stewart Race Cars, who built his Super Gas Corvette.
Although he admits he hasn’t completely come to grips with the title of world champion, Bogacki’s experience in the sport helps him put his dream season into perspective.
“It’s kind of surreal, to be honest. I grew up watching guys like Tommy Phillips and Scotty and Edmond Richardson race at our local track. They’ve all had great success in Super Comp and they found a way to make a living driving sportsman race cars. That opened my eyes; and for as long as I can remember that’s all I wanted to do. I used to sit in my room as a kid; most kids were playing video games. I had a practice tree set up, and index cards with the names of racers on the front, and a list of their reaction times from National Dragster on the back. I’d run rounds, races, seasons against those flash cards for hours at a time. I bet I won 100 world championships on that practice tree! It’s just hard to believe it’s come true in real life.”
Bogacki thanked his wife, Jessica and their son Gary for their unwavering support. He also wished to recognize his team’s major marketing partners: ThisIsBracketRacing.com and the Motor City Hot Rod and Racing Expo, as well as associate partners K&N Engineering, Tinsley Drilling & Company, C.A.R.S. Protection Plus, Advanced Product Design (APD), JEGS, Mickey Thompson Tires and Wheels, Bill Taylor Enterprises (BTE), and Product Development Group (makers of AirTek Pressure Systems and Flo-Fast pumps).
Labels:
bte transmission,
bteracing,
drag racing,
Luke Bogacki,
NHRA,
powerglide,
Super Comp
Friday, September 20, 2013
Powerglide band adjustment tips
The powerglide transmission has a single band. It is used to hold the clutch drum during low gear operation. If the powerglide band is not adjusted properly the following things can occur:
See also:
BTE Kevlar Powerglide Band
BTE Wide Powerglide Band
- Band failure (burning of clutch material)
- Slipping in low gear or no low gear function at all
- Shift flare between low and high gears
- Car rolling backwards when the transbrake is applied
- Tighten the band adjustment screw to 72 inch lbs
- Unscrew the band adjuster three and a half turns (3.5)
- Tighten the band adjustment screw's locking nut
See also:
BTE Kevlar Powerglide Band
BTE Wide Powerglide Band
Friday, September 6, 2013
What are the limits of a factory, stock or OEM powerglide case in a racing application?
For more than 30 years, racers have relied on a variety of OEM parts to complete their cars due to budget or due to a lack of suitable aftermarket parts. In the last 10 years, this has started to change dramatically with the availability of aftermarket cases, housings, gears, and just about every other high performance transmission (or engine) component.
Aftermarket powerglide cases bring a lot of advantages over stock cores:
What are the practical limits for the stock cases? What are some important tips to remember when using a stock case?
BTE recommends using a polyurethane transmission mount. Solid, rigid mounts are often too stiff for a powerglide case when a heavy car launches hard. This will often lead to a crack in the case.
Also, stock cases are more prone to failure if a driveshaft, rear end, or u joint is not properly configured or faulty.
Finally, it is important to monitor line pressure when using a stock powerglide case. Pressures over 245 lbs can cause leaks or cause cracks to form in the thin die cast aluminum found in some of the various casting versions.
Aftermarket powerglide cases bring a lot of advantages over stock cores:
- Greater strength
- Revised oil channels optimized for racing
- Improved wall thickness to meet SFI safety requirements
- Elimination of non essential areas and features for OEM usage
What are the practical limits for the stock cases? What are some important tips to remember when using a stock case?
BTE recommends using a polyurethane transmission mount. Solid, rigid mounts are often too stiff for a powerglide case when a heavy car launches hard. This will often lead to a crack in the case.
Also, stock cases are more prone to failure if a driveshaft, rear end, or u joint is not properly configured or faulty.
Finally, it is important to monitor line pressure when using a stock powerglide case. Pressures over 245 lbs can cause leaks or cause cracks to form in the thin die cast aluminum found in some of the various casting versions.
Friday, August 16, 2013
Why is your car moving backward when applying the transbrake in your powerglide?
As a follow up to our previous blog posting, the other common problem with transbrake operation in powerglide transmissions is the transmission moving in reverse when the transbrake is activated. Again, this can cause the car to roll out of the staging lights causing an instant loss.
Once again, we will review the normal transbrake operation:
If the car is moving backward any during the transbrake setting and staging process, it is likely due to one of the following problems:
Once again, we will review the normal transbrake operation:
- You activate the transbrake solenoid in low gear when staging. The solenoid pushes the brake valve to a position in the valve body that redirects fluid.
- Fluid rushes within the transmission to apply the reverse clutch piston and reverse clutches. This locks the transmission in a 1:1 fight between low gear and reverse.
- You increase engine RPM to prepare the car for launch. The transbrake remains locked and keeps the car in place.
- You release the transbrake solenoid switch which removes fluid pressure from the reverse piston and clutches. The car now has forward movement in low gear and accelerates down the track.
If the car is moving backward any during the transbrake setting and staging process, it is likely due to one of the following problems:
- Staging at an RPM that does not supply sufficient fluid volume - OEM or weak pumps need additional RPMs to move fluid quickly and adequately to apply the reverse clutches. Increasing your RPM before setting the transbrake is the first solution to try.
- Low gear band not holding.
- The low gear band can be completely worn down which would prevent it from holding low gear
- The band needs to be re-adjusted
- The servo piston has failed, is leaking, or has broken a sealing ring
- The band adjustment screw has broken or is bent
Wednesday, August 7, 2013
Why is your car moving forward or rolling when applying the transbrake in your powerglide?
A common problem for powerglide racing transmissions equipped with transbrake valve bodies is any kind of movement when the transbrake is activated and the car is staged. This happening during a race can often result in an instant red light and loss.
Normal transbrake operation:
With a fully operational reverse circuit, your powerglide transmission should be holding steady and not rocking when it is time to race.
Normal transbrake operation:
- You activate the transbrake solenoid in low gear when staging. The solenoid pushes the brake valve to a position in the valve body that redirects fluid.
- Fluid rushes within the transmission to apply the reverse clutch piston and reverse clutches. This locks the transmission in a 1:1 fight between low gear and reverse.
- You increase engine RPM to prepare the car for launch. The transbrake remains locked and keeps the car in place.
- You release the transbrake solenoid switch which removes fluid pressure from the reverse piston and clutches. The car now has forward movement in low gear and accelerates down the track.
- Staging at an RPM that does not supply sufficient fluid volume - OEM or weak pumps need additional RPMs to move fluid quickly and adequately to apply the reverse clutches. Increasing your RPM before setting the transbrake is the first solution to try.
- Reverse is not being engaged with enough pressure or not at all
- From the solenoid to the reverse clutches, something is not applying the full force of the reverse circuit to give the transmission a firm transbrake hold.
- Examine your transbrake solenoid operation and engagement. Is it getting enough power? Is it too old and need replacing? Is it engaging all of the way?
- The reverse piston may have have a damaged seal, be worn, or just stuck all together.
- Make sure the valve body and governor support are properly secured. A leak internally can affect the reverse fluid circuit.
With a fully operational reverse circuit, your powerglide transmission should be holding steady and not rocking when it is time to race.
Monday, July 15, 2013
Photos from the BTE World Footbrake Challenge VII at Bristol Thunder Valley
Our own Shaun West just returned from Bristol Thunder Valley Dragway where the BTE World Footbrake Challenge wrapped up this past weekend. A great weekend of footbrake bracket racing was had by hundreds of racers, their families, and friends. We want to thank the promoters for welcoming us back again for the seventh time.
You can see more photos on our Facebook photo gallery.
You can see more photos on our Facebook photo gallery.
Monday, July 8, 2013
BTE Transmission housing for Powerglide Transmissions now on sale
For the month of July, BTE is offering its popular powerglide SFI approved housing for a special price of $808 with free shipping. This offer is available online at http://www.bteracing.com/BTE-NEW-Powerglide-Case.html as well as by calling us at 1-800-626-1828.
This housing is fully SFI approved. No transmission blankets or shields are required for competition. A special IKO roller bearing is installed in the rear of the case to reduce output shaft drag. This heavy duty casting requires no liners.
BTE uses this housing on all of its Top Sportsman, Pro Mod, and Top Dragster racing powerglide transmissions.
This housing is fully SFI approved. No transmission blankets or shields are required for competition. A special IKO roller bearing is installed in the rear of the case to reduce output shaft drag. This heavy duty casting requires no liners.
BTE uses this housing on all of its Top Sportsman, Pro Mod, and Top Dragster racing powerglide transmissions.
Friday, June 10, 2011
BTE's Aftermarket Powerglide Case Repair Service
BTE's Aftermarket Powerglide Case Repair Service
A broken output shaft or drive shaft can be devastating for the entire
driveline. Often the transmission housing or case will be damaged
severely. This is especially costly if you are using an aftermarket
case. ($800+!) But fear no longer, as BTE now has the ability to
repair most cases that have experienced this type of failure. Send us
your housing for inspection, and if it is salvageable, we can install
an insert into the rear of the case that will replace the damaged
section, resulting in a 100% functional transmission.
Labels:
bte,
bteracing,
memphis performance,
powerglide,
racing transmission,
support,
tech,
transmission
Thursday, June 2, 2011
High Volume / Flow Powerglide Filter Kit
High Volume / Flow Powerglide Filter Kit
BTE 248800 / BTE 248850
If you've improved your transmissions fluid capacity with one of our
deep pans, another easy to install upgrade is our Super Filter kit for
the powerglide transmission. In a racing transmission, we want to
feed the transmission all of the fluid it needs; if it ever starves
for fluid, then the transmission will not perform at its peak level or
even fail in an epic fashion. This kit is an easy way to open up even
more fluid flow potential. The kit, available in two versions, uses
a Torqueflite style filter that has a much larger surface area than
the standard powerglide fluid filter. This kit installs in just a few
minutes and requires no special transmission knowledge. The standard
kit includes a paper style filter, but we also have a screen style
filter for even higher flow. Like our deep pan kit, pair this with a
fresh filling of our BTE transmission fluid for best results.
BTE 248800 / BTE 248850
If you've improved your transmissions fluid capacity with one of our
deep pans, another easy to install upgrade is our Super Filter kit for
the powerglide transmission. In a racing transmission, we want to
feed the transmission all of the fluid it needs; if it ever starves
for fluid, then the transmission will not perform at its peak level or
even fail in an epic fashion. This kit is an easy way to open up even
more fluid flow potential. The kit, available in two versions, uses
a Torqueflite style filter that has a much larger surface area than
the standard powerglide fluid filter. This kit installs in just a few
minutes and requires no special transmission knowledge. The standard
kit includes a paper style filter, but we also have a screen style
filter for even higher flow. Like our deep pan kit, pair this with a
fresh filling of our BTE transmission fluid for best results.
Labels:
bte,
bteracing,
FILTER KIT racing,
memphis performance,
powerglide
Tuesday, April 19, 2011
2011 BTE / Memphis Performance catalog is finished!
The 2011 BTE / Memphis Performance catalog is finished. Check your mailbox in the next days for your copy. The new catalog includes new powerglide parts, new torque converters, and many other new performance products. If you are not on our mailing list, but would like to receive a copy, call us at 1-800-626-1828 to get your own copy!
Labels:
bte,
catalog,
powerglide,
racing transmission
Thursday, May 22, 2008
New High Gear Powerglide Piston (And how it was born)
Unlike some performance industries, the drag racing drive train industry has been supplied for nearly thirty years by junkyards. Using often modified OEM parts from the economy two speed Powerglide transmission of the 1960s and 1970s, drag racers, transmission builders, and parts suppliers championed the simplicity, durability, and for many years, availability of core, junkyard parts.
During the course of the last several decades, these qualities have been affected by consumption of available parts, junkyard scrap recycling, the elements, and the ever increasing demands put on the transmissions by higher quality racing surfaces and increased engine output levels.
Even before the depletion of available OEM core parts, several components of the Powerglide transmission have proven to be clearly unsuitable for racing, such as the OEM iron clutch hub and the input shaft. These were quickly redesigned and manufactured.
As time passes, the two curves of availability and durability change and more parts are fashioned from new material because of these changes, such as the case, gearsets, and pumps. Parts manufacturers like BTE must meet the demand of higher output engines from their customers and also combat the dwindling supply of OEM parts.
Recently, the industry has reached a point of no-return. Core prices for junkyard cores have risen so high in price that it is now more economical to manufacture new parts than buying old oem parts and re-manufacturing. (And a new, designed specifically for racing component is much more desirable than a 40 year old reworked piece from a junkyard, right?)
The pictured high gear piston is one of the last holdouts of the OEM days. This new piston replaces the factory design primarily due to low availability and not performance limitations. We've changed the design to use a spring pocket for spring retention. These billet aluminum pieces are strong and suitable for all applications.
Thanks for reading. I'll be adding a variety of posts and videos here at the blog covering what's going on inside our operations or anything interesting from the racing community. If you have any questions or suggestions for a topic, please leave a comment or email me at brandon.barrentine@bteracing.com.
Labels:
development,
new products,
piston,
powerglide,
racing
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