High HP 914? Options

[d k]

Hello people.

I'm a noob here, but been around cars for awhile.

Recently acquired a 75 914 that is very clean and going to do the Subaru conversion. Car will be used mostly for track events and some odd miles on the street.

The question that I had, is how does this car respond to high horsepower? In stock form, the EJ257 will put out 300 at the crank and I'm wondering if it makes sense to tweak it a little more....

I've seen a few conversions done here and read through a ton of threads. Some very helpful info here, but I haven't read anybody's feedback on what the chassis will do if throw 500hp at it? Besides all the supporting mods necessary to handle the power, what will the driving dynamics be??
Maybe it's not worth to do anything except just the engine swap, but since it's going to get a full cage, big brakes and aero, maybe go big (IMG:style_emoticons/default/driving.gif)

David

[pcar916]

I've been running a 993 engine in my 914 since 1999 and wouldn't ever go back to less horsepower. It is spec'd at 270hp by Porsche and I have a clutch/flywheel assembly that weighs in at almost 20lbs. The stock 993 flywheel and clutch assembly weighs right at 55lbs. That makes a big difference in how the car ramps up on power, but is very driveable since the DME helps. With carbs that would be a different story (on the street) when the engine was cold and at very low revs.

The car has to be stiffened, the suspension must be beefed up, the brakes have to be bigger, and on the track and street you should really consider a limited slip differential (although I didn't have one until many years after the conversion). I could easily use another 100hp... period, but not at an AX.

Good luck!

[ChrisFoley]

... I could easily use another 100hp... period, but not at an AX...

I'm trying to help set up a 500 hp 914 for A/X right now.
With the street setup it currently has, the car is practically undriveable with any more than half throttle.