'90 928 S4 with Chevy Motor
07-31-2006, 04:27 PM
#16
Captain Obvious
Super User
Super User
Originally Posted by Rob M Budd
It is an LT1 with cast iron manifolds. I think 700 HP is a stretch with or without headers.
I expect the turbo is mounted in the drivers side engine compartment just under the intake duct.
The pictures are so bad, it's hard to say if its a hack job.
He says the original 928 motor can be rebuilt. I wonder what went wrong with it.
With 50K invested, I'll bet he spent more on the 928 parts then on the conversion. I know I did.
I expect the turbo is mounted in the drivers side engine compartment just under the intake duct.
The pictures are so bad, it's hard to say if its a hack job.
He says the original 928 motor can be rebuilt. I wonder what went wrong with it.
With 50K invested, I'll bet he spent more on the 928 parts then on the conversion. I know I did.
A 700HP LT1 would need to have aftermarket heads, intake system (the OEM is not really good for high psi), long tube headers, intercooler and probably a stand alone programmable fuel and ignition system as a minimum. That engine looks very stock from the pictures.
07-31-2006, 06:26 PM
#17
Three Wheelin'
Join Date: Aug 2003
Location: DFW
Posts: 1,641
Likes: 0
Received 0 Likes
on
0 Posts
Copy-and-pasted fromt the Q&A section at the bottom...
"Question & Answer
Q: Do you have a dyno run to prove the HP? Who did the conversion and what was wrong with the orginial motor that your including? Is the car drivable or is the trans completely gone?
Jul-31-06
A: The HP figure is based on computer generated estimates of components when the engine was built. A dyno run was attempted rendering the dyno machine useless so we decided not to retry. The turbo charger is typically run at 8 to 10 pounds of boost putting the HP in the neighborhood of 550-580 HP for every day use. However it has been run at around 18-20 pounds of boost producing north of 700 HP. The conversion was performed by Gaspar Engineering with over 30 years experience in building race cars and race engines. The original motor was blown but can be rebuilt should you choose to undo the conversion. The car is not driveable except for reverse at this time as for first second and third gears are currently blown. As in my original ad, the gentlemen who originally modified the trans thinks it can be rebuilt for approximately $2,000. "
Hmmm... even cheap dynos can handle 800+ hp cars/trucks.
What bothers me the most is the near total lack of documentation given. No dyno sheet, no details on the build-up of the engine internals or turbo system, no dyno sheet, blurry pics, sketchy story, and did I mention no dyno sheet?
For all we know the shop hoodwinked the original customer with a bone-stock junkyard-pulled LT1 and a slapped-together turbo system that were strong enough to quickly blow up a not-well-maintained auto transmission.
Or on the other hand this could be an incredible $10K+ engine that has everything in the book professionally assembled and tuned into a monster which shredded a reinforced trans (and a dyno!!!) with ease. We just don't know...
Anybody here know Gaspar Engineering?
"Question & Answer
Q: Do you have a dyno run to prove the HP? Who did the conversion and what was wrong with the orginial motor that your including? Is the car drivable or is the trans completely gone?
Jul-31-06
A: The HP figure is based on computer generated estimates of components when the engine was built. A dyno run was attempted rendering the dyno machine useless so we decided not to retry. The turbo charger is typically run at 8 to 10 pounds of boost putting the HP in the neighborhood of 550-580 HP for every day use. However it has been run at around 18-20 pounds of boost producing north of 700 HP. The conversion was performed by Gaspar Engineering with over 30 years experience in building race cars and race engines. The original motor was blown but can be rebuilt should you choose to undo the conversion. The car is not driveable except for reverse at this time as for first second and third gears are currently blown. As in my original ad, the gentlemen who originally modified the trans thinks it can be rebuilt for approximately $2,000. "
Hmmm... even cheap dynos can handle 800+ hp cars/trucks.
What bothers me the most is the near total lack of documentation given. No dyno sheet, no details on the build-up of the engine internals or turbo system, no dyno sheet, blurry pics, sketchy story, and did I mention no dyno sheet?
For all we know the shop hoodwinked the original customer with a bone-stock junkyard-pulled LT1 and a slapped-together turbo system that were strong enough to quickly blow up a not-well-maintained auto transmission.
Or on the other hand this could be an incredible $10K+ engine that has everything in the book professionally assembled and tuned into a monster which shredded a reinforced trans (and a dyno!!!) with ease. We just don't know...
Anybody here know Gaspar Engineering?
07-31-2006, 08:02 PM
#20
Three Wheelin'
Join Date: Mar 2006
Location: San Diego / Las Vegas
Posts: 1,813
Likes: 0
Received 0 Likes
on
0 Posts
he would be LUCKY to get 10k with the tranny working. He will not get a bid on this thing....
People who know their cars will bring money and stand behind them with Doc, have low starting bids cause they know their cars will bring money. This guy on the other hand has his bid to start at $10k hoping he gets 1 bid
People who know their cars will bring money and stand behind them with Doc, have low starting bids cause they know their cars will bring money. This guy on the other hand has his bid to start at $10k hoping he gets 1 bid
07-31-2006, 08:43 PM
#23
Addict
Rennlist Member
Rennlist
Site Sponsor
Rennlist Member
Rennlist
Site Sponsor
So we're up to 12.5 for a 90 S4 with an LT1, 3 piece custom wheels, Koni suspension, and the original Porsche engine. I'd be in heaven tinkering with this thing for years.
It would be worth a look but It would take a couple grand just to douse those flames.
It would be worth a look but It would take a couple grand just to douse those flames.
07-31-2006, 09:34 PM
#25
Addict
Rennlist Member
Rennlist
Site Sponsor
Rennlist Member
Rennlist
Site Sponsor
Depending on how the flames were applied it MIGHT be possible to carefully color sand the new clear coat and flames off the original paint not an easy task but maybe ? I agree that there should be a lot more detail on the engine build and installation work before buying into a failed project. And IF they could FIX it for $2,000 that would be the BEST way to sell a car as it is you can not even drive it on to the trailer !
07-31-2006, 10:40 PM
#27
Pro
Join Date: Mar 2002
Location: S. Florida
Posts: 608
Likes: 0
Received 0 Likes
on
0 Posts
700 is easy on a 350 chevy. 50k sounds like a stretch though.
I read an article years ago in a hot rod mag where they did a simple buildup.
350 ci 4 bolt block, forged crank, LC pistons, 202 heads, mild cam, no exotic headers with twin turbos and pumped out 900 hp on the first dyno pull.
Joe Essa at Essatech down here built a TT corvette with a 383 short block, alum heads, custom manifolds etc etc etc and that car dynoed at 1250 hp on race gas.
700 is doable.
I read an article years ago in a hot rod mag where they did a simple buildup.
350 ci 4 bolt block, forged crank, LC pistons, 202 heads, mild cam, no exotic headers with twin turbos and pumped out 900 hp on the first dyno pull.
Joe Essa at Essatech down here built a TT corvette with a 383 short block, alum heads, custom manifolds etc etc etc and that car dynoed at 1250 hp on race gas.
700 is doable.
07-31-2006, 10:58 PM
#29
Addict
Rennlist Member
Rennlist
Site Sponsor
Rennlist Member
Rennlist
Site Sponsor
Originally Posted by tammons
700 is easy on a 350 chevy. 50k sounds like a stretch though.
I read an article years ago in a hot rod mag where they did a simple buildup.
350 ci 4 bolt block, forged crank, LC pistons, 202 heads, mild cam, no exotic headers with twin turbos and pumped out 900 hp on the first dyno pull.
Joe Essa at Essatech down here built a TT corvette with a 383 short block, alum heads, custom manifolds etc etc etc and that car dynoed at 1250 hp on race gas.
700 is doable.
I read an article years ago in a hot rod mag where they did a simple buildup.
350 ci 4 bolt block, forged crank, LC pistons, 202 heads, mild cam, no exotic headers with twin turbos and pumped out 900 hp on the first dyno pull.
Joe Essa at Essatech down here built a TT corvette with a 383 short block, alum heads, custom manifolds etc etc etc and that car dynoed at 1250 hp on race gas.
700 is doable.
Of course paying someone else to do the work can eat up a lot of cash.
