Kiesel Turbo Sprite., It rapes... literally. Options

[ghuff]

https://www.youtube.com/watch?v=nBVVssJwx2Y



(IMG:style_emoticons/default/drooley.gif)

[Thorshammer]

The fastest E Mod 914 I have ever seen was built by Bill Crescenzo of Force Racing in Kansas City. The car had double a-arm front suspension, a 2.4 liter supercharged engine with fuel injection (modified Bosch), and the HP output was 325 ish, with an audi automatic (no shit). He ran the car, and so did several other people (Bert Swift, Matt Snow), and I think its best finish was in the late 80's or early 90s (3rd). This was against Temandi's rotary Sprite.

Bills company used to advertise in Pano, his ad was "Can you upshift hard and fast" and he provided synchro modifications for 901 and 915 gearboxes. He is now a master clock maker but still has the car. It can be done, but it would take a supercharged engine and radical use of fiberglass or carbon fiber. Honestly, I think Crescenzo's car was very well developed, but you could do something much better with today's technology.


Erik Madsen

[ctbarbarian]

The fastest E Mod 914 I have ever seen was built by Bill Crescenzo of Force Racing in Kansas City. The car had double a-arm front suspension, a 2.4 liter supercharged engine with fuel injection (modified Bosch), and the HP output was 325 ish, with an audi automatic (no shit). He ran the car, and so did several other people (Bert Swift, Matt Snow), and I think its best finish was in the late 80's or early 90s (3rd). This was against Temandi's rotary Sprite.

Bills company used to advertise in Pano, his ad was "Can you upshift hard and fast" and he provided synchro modifications for 901 and 915 gearboxes. He is now a master clock maker but still has the car. It can be done, but it would take a supercharged engine and radical use of fiberglass or carbon fiber. Honestly, I think Crescenzo's car was very well developed, but you could do something much better with today's technology.


Erik Madsen

Eric !
Its nice to see that someone remembers - there are, however a few points to correct on your very kind post...
The folks that helped out driving the orange car were Bert Swift, Donna Swift, Matt Hart and Hope Williamson. Bert took 4th in '93 & '94, Hope took 2nd place in EML in '92.
The horsepower was 425 or so, the car weighed in at 1575 lbs wet. it WAS an achievement to keep that thing running over multiple racing seasons usually with three drivers per event !
I was quite proud of keeping that Audi fox transaxle intact just long enough to discover the gear ratios were unsuitable...
The last time the car competed nationally, it was equipped with a modified 901 that was gutted to a two speed. The low range would make it to about 75 mph. The higher gear would do about 110.

[Randal]

The fastest E Mod 914 I have ever seen was built by Bill Crescenzo of Force Racing in Kansas City. The car had double a-arm front suspension, a 2.4 liter supercharged engine with fuel injection (modified Bosch), and the HP output was 325 ish, with an audi automatic (no shit). He ran the car, and so did several other people (Bert Swift, Matt Snow), and I think its best finish was in the late 80's or early 90s (3rd). This was against Temandi's rotary Sprite.

Bills company used to advertise in Pano, his ad was "Can you upshift hard and fast" and he provided synchro modifications for 901 and 915 gearboxes. He is now a master clock maker but still has the car. It can be done, but it would take a supercharged engine and radical use of fiberglass or carbon fiber. Honestly, I think Crescenzo's car was very well developed, but you could do something much better with today's technology.


Erik Madsen

Eric !
Its nice to see that someone remembers - there are, however a few points to correct on your very kind post...
The folks that helped out driving the orange car were Bert Swift, Donna Swift, Matt Hart and Hope Williamson. Bert took 4th in '93 & '94, Hope took 2nd place in EML in '92.
The horsepower was 425 or so, the car weighed in at 1575 lbs wet. it WAS an achievement to keep that thing running over multiple racing seasons usually with three drivers per event !
I was quite proud of keeping that Audi fox transaxle intact just long enough to discover the gear ratios were unsuitable...
The last time the car competed nationally, it was equipped with a modified 901 that was gutted to a two speed. The low range would make it to about 75 mph. The higher gear would do about 110.

Would greatly appreciate hearing more about how you did the supercharged 2.4. Also would love to hear what syncro modification you offered for a 901 and whether or not the mods are still available. Thanks.

[ctbarbarian]

The fastest E Mod 914 I have ever seen was built by Bill Crescenzo of Force Racing in Kansas City. The car had double a-arm front suspension, a 2.4 liter supercharged engine with fuel injection (modified Bosch), and the HP output was 325 ish, with an audi automatic (no shit). He ran the car, and so did several other people (Bert Swift, Matt Snow), and I think its best finish was in the late 80's or early 90s (3rd). This was against Temandi's rotary Sprite.

Bills company used to advertise in Pano, his ad was "Can you upshift hard and fast" and he provided synchro modifications for 901 and 915 gearboxes. He is now a master clock maker but still has the car. It can be done, but it would take a supercharged engine and radical use of fiberglass or carbon fiber. Honestly, I think Crescenzo's car was very well developed, but you could do something much better with today's technology.


Erik Madsen

Eric !
Its nice to see that someone remembers - there are, however a few points to correct on your very kind post...
The folks that helped out driving the orange car were Bert Swift, Donna Swift, Matt Hart and Hope Williamson. Bert took 4th in '93 & '94, Hope took 2nd place in EML in '92.
The horsepower was 425 or so, the car weighed in at 1575 lbs wet. it WAS an achievement to keep that thing running over multiple racing seasons usually with three drivers per event !
I was quite proud of keeping that Audi fox transaxle intact just long enough to discover the gear ratios were unsuitable...
The last time the car competed nationally, it was equipped with a modified 901 that was gutted to a two speed. The low range would make it to about 75 mph. The higher gear would do about 110.

Would greatly appreciate hearing more about how you did the supercharged 2.4. Also would love to hear what syncro modification you offered for a 901 and whether or not the mods are still available. Thanks.

The motor was quite interesting... 103 mm bore std 2.0 liter stroke, big valves (44/ 40 I think). Paxton supercharger that was an adventure unto itself to become reliable. Finally settled on Amzoil type F atf and the Paxton bronze ball driver to keep it together.
If there were any reliability problems with the Paxton, it was due to the fact that it was overdriven to produce 12 - 13 lbs of boost ) I had engineered a variable ratio drive that flattened out the boost pressure throughout the operational range. The unit was overdriven at low crankshaft rpm and slowed somewhat at high rpm. People that had driven the car likened the available torque to that of a big block Chevy. Of course, finding out all the stuff this amount of power could (and did) break, was a multi - seasonal thing.
Just getting the type 4 engine to absorb that kind of boost involved seven (yes 7) studs per cylinder. Funny car - like Alloy connecting rods ( that were the eventual downfall of that motor...)
I have the one remaining rod out of that engine displayed over my workbench with a stress crack the length of the beam. I discovered the service life on that component... All you have to do is put fresh connecting rods in every other season !
There was too much to list, lets just call it a grand adventure.
The synchro modification was offered under the slogan "Can you shift up, down, hard and fast ?" This is something that the Chevy boys that drove it likened to a Muncie. I'm afraid Force racing ceased to exist, as did the Force Racing transaxle. Sorry.
Bill Crescenzo

[Randal]

The fastest E Mod 914 I have ever seen was built by Bill Crescenzo of Force Racing in Kansas City. The car had double a-arm front suspension, a 2.4 liter supercharged engine with fuel injection (modified Bosch), and the HP output was 325 ish, with an audi automatic (no shit). He ran the car, and so did several other people (Bert Swift, Matt Snow), and I think its best finish was in the late 80's or early 90s (3rd). This was against Temandi's rotary Sprite.

Bills company used to advertise in Pano, his ad was "Can you upshift hard and fast" and he provided synchro modifications for 901 and 915 gearboxes. He is now a master clock maker but still has the car. It can be done, but it would take a supercharged engine and radical use of fiberglass or carbon fiber. Honestly, I think Crescenzo's car was very well developed, but you could do something much better with today's technology.


Erik Madsen

Eric !
Its nice to see that someone remembers - there are, however a few points to correct on your very kind post...
The folks that helped out driving the orange car were Bert Swift, Donna Swift, Matt Hart and Hope Williamson. Bert took 4th in '93 & '94, Hope took 2nd place in EML in '92.
The horsepower was 425 or so, the car weighed in at 1575 lbs wet. it WAS an achievement to keep that thing running over multiple racing seasons usually with three drivers per event !
I was quite proud of keeping that Audi fox transaxle intact just long enough to discover the gear ratios were unsuitable...
The last time the car competed nationally, it was equipped with a modified 901 that was gutted to a two speed. The low range would make it to about 75 mph. The higher gear would do about 110.

Would greatly appreciate hearing more about how you did the supercharged 2.4. Also would love to hear what syncro modification you offered for a 901 and whether or not the mods are still available. Thanks.

The motor was quite interesting... 103 mm bore std 2.0 liter stroke, big valves (44/ 40 I think). Paxton supercharger that was an adventure unto itself to become reliable. Finally settled on Amzoil type F atf and the Paxton bronze ball driver to keep it together.
If there were any reliability problems with the Paxton, it was due to the fact that it was overdriven to produce 12 - 13 lbs of boost ) I had engineered a variable ratio drive that flattened out the boost pressure throughout the operational range. The unit was overdriven at low crankshaft rpm and slowed somewhat at high rpm. People that had driven the car likened the available torque to that of a big block Chevy. Of course, finding out all the stuff this amount of power could (and did) break, was a multi - seasonal thing.
Just getting the type 4 engine to absorb that kind of boost involved seven (yes 7) studs per cylinder. Funny car - like Alloy connecting rods ( that were the eventual downfall of that motor...)
I have the one remaining rod out of that engine displayed over my workbench with a stress crack the length of the beam. I discovered the service life on that component... All you have to do is put fresh connecting rods in every other season !
There was too much to list, lets just call it a grand adventure.
The synchro modification was offered under the slogan "Can you shift up, down, hard and fast ?" This is something that the Chevy boys that drove it likened to a Muncie. I'm afraid Force racing ceased to exist, as did the Force Racing transaxle. Sorry.
Bill Crescenzo

Thanks for the response Bill.

Sounds like you were way ahead of your time and put together a motor that worked, but had challenges like they all do.

Would like to see some pictures of the car, motor and transaxle if you have any around.

So was the "..shift up,down..." modification something you built aftermarket, so to speak, or did you just do great transmission rebuilds?

Personally would love to have 300 hp to the rear wheels, which must have been fun to drive.

Sorry to hear the Force Racing no longer exists.