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-   -   2.7 CIS on 3.0 SC (http://forums.pelicanparts.com/911-engine-rebuilding-forum/916831-2-7-cis-3-0-sc.html)

Nielske 06-04-2016 12:57 AM

2.7 CIS on 3.0 SC
 
Hello All,

I am restoring a 1975 Porsche 911S and I am looking what to do with the engine.
I have a 2.7 1974 engine (150hp) complete with CIS en exhaust system what came out of the car.

I have also a 3.0 Sc (930/06) engine with a 3.2 injection system I think.

THere is no rekords available from the 2.7 but it is leaking oil.

As I want to use the 3.0 sc engine but cannot use the 3.2 injection system, is it possible to fit the 2.7 cis on the 3.0 engine?
(I have looked for a 3.0 CIS but I have to pay a few thousand dollars)
http://forums.pelicanparts.com/uploa...1465030508.jpg
http://forums.pelicanparts.com/uploa...1465030525.jpg
http://forums.pelicanparts.com/uploa...1465030596.jpg

Flat6pac 06-04-2016 02:16 AM

The 2.7 injection will run the 3.0.
There will be a point where you will run out of acceleration because your throttle body throat really needs to be from a 78/79 CIS system.
Then get the proper fuel distributor and you lol be in pretty good shape.
Bruce

Irhmsd 06-05-2016 09:38 AM

Sell both of those engines. You can probably get around $10k combined. Then, source a nicely rebuilt 3.2.

Steve@Rennsport 06-05-2016 10:44 AM

Quote:

Originally Posted by Irhmsd (Post 9148511)
Sell both of those engines. You can probably get around $10k combined. Then, source a nicely rebuilt 3.2.

This is the best idea, hands down!!!!

Budget for a front oil cooler as well.

SoyRacer 06-05-2016 11:01 AM

Quote:

Originally Posted by Irhmsd (Post 9148511)
Sell both of those engines. You can probably get around $10k combined. Then, source a nicely rebuilt 3.2.

Where are you located ? You may have more options than you realize.

Irhmsd 06-05-2016 06:34 PM

OEM front cooler parts in the $3k range......ask me how I know. ��

Nielske 06-06-2016 12:33 AM

Yes, I agree, selling both engines and buy a 3.2 is the best option, but due to lack of funds it is not an option for now.

I was thinking of using the 3.0 engine with the 3.2 injection. I only would have to source a DME unit incl. wiring harness and fuel pump and filter, is this correct?

are there any advantages / disadvanteges of running a 3.2 injection on a 3.0 sc engine? maybe running to rich?

I am located in the Netherlands, europe. The prices for spare parts etc. are very high here, even in Germany. Lowest prices for engines like a 3.0 sc are around 13000 usd for an incompleet, no history included engine.

Flat6pac 06-06-2016 06:41 AM

The 3.2 injection will need flywheel sensor bosses which aren't there.
Bruce

Nielske 06-06-2016 08:35 AM

Quote:

Originally Posted by Flat6pac (Post 9149436)
The 3.2 injection will need flywheel sensor bosses which aren't there.
Bruce

This is the backside of the engine. Are these the sensor bosses?

http://forums.pelicanparts.com/uploa...1465230841.jpg

Flat6pac 06-06-2016 09:12 AM

Yes, now it's a 3.2 or a late 3.0 from late 83 production.
Your engine code will be 930/16
Bruce

timchar 06-07-2016 04:26 AM

Quote:

Originally Posted by Irhmsd (Post 9148511)
Sell both of those engines. You can probably get around $10k combined. Then, source a nicely rebuilt 3.2.

Good advice. I've currently never seen a "properly rebuilt" 3.2 for 10k? 13-15k is more realistic in today's market. Good luck, Tim


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