pig4bill

I know it will cost more than modifying the Japanese turbocars, just wondering how much more.

Brent 89 - GT

If you start with an '88 or '89 Turbo S car you should get close to 350 hp with a mass flow kit including chips. You would also need to remove the cat and add an adjustable fuel pressure regulator. This can all be done for around $2500. To get 400 hp you will need to update the headgasket to get the boost up there. The extra 50 hp will about double the cost. Of course a rebuild to 2.8 or 3.0 L, larger turbo along with higher boost can yield 450 hp and remain streetable, but now you have spent 10 grand. I have done the first round of mods along with the suspension and some brake improvements. This makes for a brutally fast and balanced track car. If you are looking for the hp for street racing your money is better spent elsewhere. 944s do not make the best drag racers.

David Gunther

Ok I doubt this is a favorable view on tuning but Renegade Hybrids makes a corvette/camaro engine transplant. a used LT1 with all components... air, emissions, computer will run you $2200-2500 and the kit runs about the same but requires other pieces that can be bought from them or fabricated but can run another $2k.
They also claim that a LS1 (the all aluminum V8) kit will be available soon, but a used LS1 will run $5-6k. well if you get 325-375 horses and 350-400 lbs of torque under the hood (easily increased from there) you will most likely rip your neck off. yeah yeah this is heresy i'm a bad man

David Gunther

send your flames towards http://www.renegadehybrids.com/
not I

Bob S. 1984 Silver

Hey...Renegade is only supplying what Porsche should have had all along...a BIG engine option!!!!If our rides had that, the number of "How do I increase my horsepower" questions would (practically) disappear.. Not completely, since some folks are NEVER satisfied with what's under the hood!!

Bob S. (still wearing Nomex skivvies)

aka 951

Ouch - 350 hp! - on a stock turbo, albeit an "S" turbo. No way at least not for more than a couple days. Take a look at the flow map for a K26 and you will know why.

To get over 300 at the wheels reliably and realisticly you need to upgrage the turbocharger. If you don't know how to do work yourself, it will be big $$$. Figure also injectors, cat-pipe, mass flow. You gotta pay to play. Around $3500 if you do the work yourself and get good components.

Erick

Dave951M

I hate to admit it, but Renegade does have a very interesting option for consideration. If I ever puke mine, Renegade will get some phone calls. I'm not so sure how the PCA will take it. Anybody have experience with that?

David- I take it you're moving east. There's a 24 hour autox in Charlotte in Sept. If you're over here, want to go? There are some of us chewing over that one. It would be great to have a Porsche contingent there.

pig4bill

No flamage from me, but a Chevy motor is not for me. If I wanted to drive a Chevy for it's low cost and ease of maintenance, I would go the whole way and just get a Corvette.

David Gunther

ok well I want a porsche 944 not a corvette. I like the style of the porsche, and I like the power of a corvette, so as I see it this is the best of both worlds for me. now if I can stop pouring money into the porsche engine I may be able to save up enough to do the conversion.
I will be in SC in september however i'll be in Drill sergeant school and my car will still be in CA so not going to happen for me.
I won't make the full move till December/ January

Dave

Dave951M, PCA requires a Porsche chassis and engine for all classes except "X". No Porsche engine=no longer a Porsche.

Brent 89 - GT

Besides with a few upgrades the 951 HAS the power of a corvette, and less weight. The only Vette that has a chance with my 951 is a new Z06 for $50k.

David Gunther

ok yes it is posible to get vette horse power from a 951 for about $4k in parts if you are a mechanic, but for half of that you can get over 400 horses from the vette engine. oh did i mention reliability and torque through the entire RPM range? or how about a $150 timing chain that will last 100 thousand miles or more? water pumps that last for years? not to mention that even though you may get vette horse power atleast at high RPMs you won't touch the torque numbers. I'm not trying to take my frustration at the 951 engine out on anyone here, but had I started on the vette trans plant when I got this car I probably would not have spent anymore money than I have trying to keep this engine running. And I'd now be the proud (and not a little bit evil > ) ) owner of a Porsche Stingray

aka 951

I'm not sure that a Vette motor would have more torque than a 400 hp 951. With the stock wastegate on my 86 951 and a upgraded turbo I put out about 300 ft-lbs to the rear wheels at a little over 3000 rpm. 400 hp variants regularly put out over 350 ft-lbs to the rear wheels. Just check out a dyno chart.

Erick

David Gunther

ok well I made a long winded reply to this post but i don't see it I'll summerize.
a naturally aspirated stock LS1 motor makes
345 horses and 350 f/lb of torque. just check it out here. http://www.d-p-g.com/corvettefever/nov96/eK.htm
thats stock so an 86 makes 150hp stock 951 makes 217 horses stock with a turbo.
ok so lets see if we add a $2-3k super charger to this LS1 engine how much power are we talking I'm going to say close to 450, 105 horse from a SC is pretty fair I think, but lets just add the 67 horse difference that exists between the NA and turbo 944. so we are saying 412 horses. so hmm how much does it cost to make 412 reliable horses from a 951? I mean anyone can turn the boost up till the engine blows, but a good V8 with a 9 to 12 pound SC will normally not break any quicker than a NA engine. how many pounds of boost are we running in our turbos? 15? 16? yeah right try 18 to 22 and higher for some folks. I wish I had the math skills to back this up but if we ran 18 pounds and race fuel in a LS1???

David Gunther

anyone know the weight of a 944 turbo engine?
the engine case for a LS1 weighs 107 pounds down from 160 pounds for the LT1 engine case
what does that mean? well i'll venture a guess that the LS1 engine is no more than 100 pounds heavier than the 944 turbo engine. hey correct me if i'm wrong.