[bluett]

Trying to re-kindle an old project. What do you guys think? Too ambitious?

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[Monstrous4Banger]

Whoa!! I admire the endeavor, but why? It would be pretty cool for sh!ts, and giggles. Ive thought about it. But so much extra weight, for power gain that could easily be matched with boost. More power to ya tho. Like Flash says, it takes all types. Its still a Porsche engine, and a Mezger engine no less. Would be cool to see if nothing else.

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[Johannvb]

Please please please do it. I would love to see this working.

I have a dream to have a GTS engine in a 968 with a modern tiptronic with paddle shift.

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[Ryan]

Wow...I coulda had a V8

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[flwbyu]

I say do it! It's already sitting in the engine bay. It's only money anyways. Doesn't that grow on tree's? Good luck!

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[flash]

oof! - that's an extra 200+ lbs up front - it's going to take some pretty big springs, and a lot of work to get that car to handle

i would absolutely make sure i had the M030 spindles and better hubs, and some really big brakes

but it would be a very unique project to be sure - nothing like having something that nobody else has

good luck

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[bluett]

Some of the problems identified is the engine width and height. But since it's going to be a race car, there are lots of engine components that is not going to be used. I'm choosing this route in order to have decent horsepower and reliability. Weight wise, it looks like it's going to be 100-150 lbs more than a 3.0 turbo with intercooler and piping. I think if I can fit the V8, there is more flexibility with the motor.

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[flash]

i'd look at the weights again - this is an area people frequently underestimate until they are already waist deep into the project - i'm not picking this apart, or suggesting that you won't have a blast making this happen, but i looked into this idea a while back, before embarking on the SC route

the engine dry weights of a 928 vs a 968 are 264kg (582lb) vs 175kg (379lbs) - that is already 203lbs - for starters it will also require a larger radiator (and it's increased coolant capacity), bracing in the chassis to handle the torque, and more exhaust weight (2 manifolds vs 1) - you are looking at a reality of 250lbs over a stock 3.0, and probably every bit of 200lbs over a 3.0 turbo

would still be interesting, but not nearly as light as you might think

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[josephsc]

Is that a 928 motor? Kelly-Moss stuffed one into a 944 -- but it required *MAJOR* bodywork:

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[firefish]

Looks cool and VERY tight. Is the engine resting properly on the mounts in the pics or is it just sitting there? Love the V8 idea, N/A and forced induction are two different animals. And to those who say that a 3.0 with turbo easily matches the N/A V8 I say that the V8 can be blown too...

In the pic of the 944 with V8 the engine clearly sits further back than stock (well, sorta stock). If going to all this trouble of fitting a V8 in there I would consider moving the engine as far back and as low as possible. Making a new firewall and the supports necessary are an easy task compared to what you are doing elsewhere. And s flash says, you're gonna need to reinforce the front end anyway. I'd lose the McP in a heartbeat while at it as well.

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[Monstrous4Banger]

Good luck force inducting, with any type of boost in that kinda space. A v8 is all fine and dandy, boosting it would just be silly in our cars. Sure the displacement of the 8 is capable of way more eventually. Its not the engine that is the weak point, its the chassis, and transaxle. Getting over 5-600 ft lbs would be great(which believe it or not is attainable with the I4), but the rest of the car just aint built to withstand it. Our chassis/transaxle simply isnt up to the job of a big power v8. The lsx conversions are already maxing out the platform....in NA trim. Only point to it is bragging. A 700+ hp boosted v8 968 , would be cool to see...but, how much fun do you think you could have before the transaxle grenades, and the chassis twists to hell ? Everyone is always like , yeah woooo, the V8 is capable of waaaaaay more....the point is moot if the car housing the engine cant support it. Just my .02 cents. I would love to see how this comes along. Cool to see someone putting a Porsche v8 in for a change. Force inducting that thing I would think, would be a bigger project, than shoehorning it in.

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[rhudeboye]

Awesome project!

A SC 928 is a monster of a car. Very fun to drive. stupid fast! Hell, they did well as NA's.
But here are the pros and cons the way I see it:
I like the exterior look of our 68's much better then that of the 28.
The intr of the 28 is superior to our 68s.
Parts are more common place for the 28.
The upkeep of the 28 is more expensive and from what Ive heard from owners, no where near as reliable as the 44s and 68s.

Ya know what would be perfect? If I had gobs of cash I would chop the rear of the 28 and replace with the 68. Then add our fenders, headlights and bumper to the front. SC the engine and buy all those upgrade goodies to freshen up the intr.

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[firefish]

I didn't say it should be done, I simply stated it could be done. As you said, the point is moot unless you really want to get in there doing major upgrades, but so is the standard response from the low displacement community about small vs large engines, "I can force feed my small engine so it is as powerful as your big engine so there is no use going big", as the big engine could be blown too. And a big blown engine will always give more than a small blown engine.

For track use, especially with a car with a chassis that is on the edge of what it can handle, I would take the N/A power delivery seven days a week. With regards to engine only, a big N/A almost always beats a small charged engine with similar numbers (not taking into account weight of the engine) in my book.

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[flash]

reminds me of the blown 302 i shoe-horned into a 944 - tons of power - gobs of torque - so much that it put the car on 3 wheels permanently the first time we lit it up - something about having 400+ft/lbs at 1500 rpm that the chassis didn't like - go figure - lol

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[bluett]

The engine is not sitting completely down. There is definitely some work to be done on the chassis. The main problem would seem to be the timing belts...it's very wide and hitting the frame. Custom motor mounts need to be fabricated along with a relocation of the brake master cylinder. I'm planning to rebuild the motor naturally aspirated with probably longer stroke crankshafts and higher compression pistons. Reliability is the key here otherwise I would have turbocharged my 3.0 liter motor (anyone looking for a newly rebuilt 280hp NA 968 motor can PM me), and shoving a V8 here just seems more fun. I think 400-450 hp is not asking too much from my S4 motor.

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[Monstrous4Banger]

Curious why you feel the turbo 3.0 would be unreliable?

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[craigawoodman]

Why not go for an LS3 Chev V8 - it will fit in a 944, so surely it will fit in a 968. more modern engine, better weight characteristics and plenty of aftermarket supercharger options if you want to create your own smoke screen effect from the rear tyres.

Not sure if the front cross member for a 944 will fit into a 968 - but the 928 engine does not like track work. Every time I see a 928 driven in anger it results in the car going home on a trailer or a truck.

I will certainally give you heaps of brownie points for pushing the envelope.

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[firefish]

Don't know how it is for you but in Sweden you have to run a Porsche engine in order to qualify for racing in some Porsche-only classes. So perhaps a GM V8 is out of the question for that reason.

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