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YOUR RESEARCHFor those interested, engine conversion - V8
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For those interested, I Stumbled across this 996 project tread, owner is fitting a V8 to a salvage project.
RUF released a V8 engined 911 not to long ago so it cant be that bad.
http://www.ls1tech.com/forums/conver...onversion.html
Interesting. But other than the shear fact of doing a project like this for the fun of it and being able to say you did it, I see it as nothing but a novelty. More horsepower? You're putting a heavier engine in an already tail-heavy car - you won't be able to use any extra horsepower, and prolly not even the stock amount. Lol! Hmmm. Go with the lightest 4cyl you can find and as much turbo as you can muster. That'd be my plan.
You could go mid-engine, but then you defeat the whole nature and "romance" of the 911. A romance you sometimes hate to love, but just can't help yourself.
Saw an article in 2005 on a Hybusa 1300cc engine turboed to 700hp. Would be interesting to see the porsche with a 12k rpm range. Of course then the curse of the exhaust calling police from miles around would be on the 911 also besides just the liter bike guys. If a guy would be lucky maybe they would be hormoned up for a bike not the porsche after hearing the bike engine winding up. Of course you are toast once they figure out its your car with the bike engine.
actually an LS1 based motor with it's aluminum block, heads and composite intake is a very comparable weight to a twin turbo motor. With good flowing heads, a different intake and cam it would easily make 500 hp and be very reliable with a LOT of torque. It's not the norm, but looks like a good project and the money saved will allow for suspension and brake upgrades.
An LS1 in a 951 makes a good combo too.
granted porsche purists will look at you real mean.....
I'm not sure why you think the LS engine is heavier. My research indicates the aluminum LS is less than 500 pounds, and the 3.6/3.8 M96/M97 is also right around 500 pounds. (the dry weight of the LS is actually 457 pounds, but it's a bit hard to compare figures because manufacturers include different amounts of accessories in that figure).
Even if it did weigh more, how would that make the horsepower unusable? It would be just fine in a straight line, sure it would be a handful in corners.
What are the advantages of the LS engine ?
1. It's very cheap so if you blow one up on the track you just replace it.
2. Mods & parts for it are very cheap as well so you can go dry sump, titanium rods, etc. for what an oil change costs on a Porsche. There's a huge mod community built up and lots of parts you can buy off the shelf from the LS3/LS6/LS7/etc.
3. 400 torques naturally aspirated (and much more with turbos). You can easily mod up to 500 HP NA. eg. the engine has lots of "potential"
IMO it's one of the great engines. In the right chassis it's an absolute monster.
Given the cost of Porsche re manufactured engines, Particularly the 3.4's this may become a tempting option for some. They don't give "pricing" but for a Porsche engine or a Flat 6 engine your are talking $18,000+ for the engine and then install, etc. I wonder if you can do one of these V8's in that range.
"Real" Porsche guys don't like the 996 anyway so it probably doesn't matter much!
On my 944 I seriously considered going this route. Even stopped at their shop when I was in Las Vegas once. For the 996 though I really like the personality of the flat six and wouldn't want a V8 in there. For the 944 though it just felt like an extension and improvement over what was already there.
Just spoke w/ Steve at Renegade. The video here was uploaded to YouTube about one week ago (March 2011). He mentioned the car in the video (996) is the first, and only conversion. Eventually he wants to provide a DIY kit. I did not ask about cost, since it is in the early stages of development.
center of gravity is marginally higher since the cams are in block, and this can be mitigated as there are lower profile oil pans and you need to do different mounts anyway so there's play there, weight is same or lower fully dressed (ls7 is 427ci/7.0L in the same "350" 5.7L sized small block, so actually slightly lighter), cooling shouldn't be an issue, i've always loved the idea, however I wouldn't say it's any cheaper to go this route if a motor blows! Renegade has been doing it for aircooled cars for a long time and the solutions for cooling were horsey, but in a 996 cooling is probably not much different than adding another waterpump.
motor is not dimensionally far off, will fit in a 930 without too much work laterally but longitudinally may require cutting of the cross member at the rear unless you can relocate a little further forward. Big issues are gauge cluster, DME, immobiliser, ABS, PSM, the need for a new adapter plate for the g96/97 trans, and some would say beefier halfshafts . If he's solved the big problems then he'll make a little dough, but not a ton. It will be impossible to sell a 911 with an american motor after its built!
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