What to do with my 2.7

jeffporsche · 05-30-2002, 04:18 PM

I am currently rebuilding a 3.0 and was wondering if the cis off of my 74 911 2.7 will work and fit on a 3.0. I purchased a bare 3.0 and was thinking about placing webbers on it, but cis is just so much easier to deal with. Also it is going to take me a good year to rebuild the engine and I was also wondering how to get more HP out of the 2.7 without spending a lot of money.

marcesq · marcesq's Garage

Jeff:

The 2.7 CIS will work, however, the 3.0 fuel distributor has a slightly larger flow rate.

As to hot rodding a 2.7, see Noah Pollaks Tech article in the tech section under 911 section on the PP home page. The same modifications apply to the 2.7. Remember that a 2.7 must be time certed if such modifications are made.

IMHO find a 3.2 or 3.6 if you are going to spend over 4k on the 2.7.

My 1 cent.

MotoSook · 05-30-2002, 06:54 PM

Jeff, I swapped a 3.0 into my 76S over the winter, and I now have a complete 2.7 sitting in the garage. The only things I have been able to come up with to do to the motor is: sell it for pennies (cheap), sell it in pieces, or use it as a first 911 motor rebuilding project.

Unless you need the money real bad (we all do I guess), hang on to it . Of course I'm a pack rat. You could sell it for what you can get on E-bay and subsidize you carburator purchase. I think you would be selling yourself short and end up spend to much money for too little result to use the 2.7 CIS system on a 3.0. But, then I haven't done it so what do I know.

Good luck!

jeffporsche · 05-30-2002, 09:03 PM

The 2.7 CIS will work, however, the 3.0 fuel distributor has a slightly larger flow rate.

Is it expensive to get a 3.0 distributor, and with it will the CIS on my 2.7 be the same as a 3.0.
Or should I sell the 3.0 and look for a complete 3.0 to rebuild.