Engine Configuration -- Hi HP motor, based on 3.0 liter -6 case Options

[nine14cats]

From previous threads and personal experience I now have a better understanding of the following:

2.7 High Compression track motor with 40 IDA Webers (inside our first 914-6)

3.2 Stock DME transplant (from previous thread here at 914Club)

3.6 993 motor with stock DME (inside Fritz, our current track car)

I would like engine configurations (comp ratio, carb sizes, cams, etc) for a 3.0 liter case motor. I am still looking at what to build for "The Beast". I can run 100+ octane race gas as this is a track only teener. I prefer injection, but carbs maybe the only way to get it on the road cost wise. I currently have a set of Weber 40's on my bench. I want a 200 hour motor if possible.

I am planning on running a 901 box behind any of the above configs except for the 3.6 if I go that route again.

What configurations and what HP can I achieve with a 3.0 case? I am open to bigger jugs..... (IMG:http://www.914world.com/bbs2/html/emoticons/rolleyes.gif)

Thanks for the help!

Bill P.

[TimT]

Ill help Bill spend some money (IMG:http://www.914world.com/bbs2/html/emoticons/happy11.gif)

We built a 3.4 a few years ago that dynoed at 375 HP, the same recipe can be appied to a 3.0 depending on how much($$) you push the boundaries, you can pretty easily get over 100 HP/liter.

I imagine your keeping 3 liter displacement to avoid the cost of new pistons and cylinders?

Case & crank:

To get a good reliable 3.0 you need to build a good foundation. Firstly improve the oiling. cross drill the crank, modify the main bearing so the 2&5 rods get all the oil they need. Get a 930, or GT3 oil pump. The GT3 oil pump is the way to go since it is less expensive than the 930 pump. You wont need to shuffle pin the case. Get steel or ARP/Raceware head studs. Also Pauter or Carillo Rods, we get better service from Pauter.

Pistons&Cylinders:

since it appears your cylinders are ok. Get some JE 10.5:1 or 11.5:1 pistons. The higher cr will make cam selection, valve timing critical. triple check valve to piston clearance. Get the lightweight piston pins from JE

Heads& Valves:

Have the heads refreshed, Machine them for twin plug even if you are not going to twin plug yet (just run an old plug in the bottom hole). possibly open up the ports. Aasco Valve spring Ti retainers. Though EBS has a new valve spring Ti retainer set up that looks nice.

Camshaft:

RSR or GE80

This setup will be quite nice with carbs. You'd have to run 34 or 36 venturis and jet to suit.

It would be even better with Haltech (shameless plug) If you dont go with EFI you should take advantage of the second set of plugs though. Electromotive crankfire will work.

BTW we have a 3.0 turbo that makes 656hp

(IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif)


PS: If you plan on pursuing EFI we have a set of TWM ITBs available

This post has been edited by TimT: Jan 2 2006, 04:32 PM