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-   -   SINGLE PLUG 10.5cr 3.0 CIS MOTOR (http://forums.pelicanparts.com/911-engine-rebuilding-forum/744385-single-plug-10-5cr-3-0-cis-motor.html)

greyes59 04-13-2013 07:23 AM
SINGLE PLUG 10.5cr 3.0 CIS MOTOR
 
I WANT TO BUILD A 3.0 ENGINE USING 10.5 cr JE PISTONS AND S CAM AND WEBER 40

CAN I GET AWAY WITH SINGLE PLUGGING THIS ENGINE USING CALIFORNIA 91 GAS?

Lapkritis 04-13-2013 07:57 AM
El Centro is hot... I wouldn't. 9.5:1 max on single plug would be my recommendation.

Steve@Rennsport 04-13-2013 08:13 AM
Quote:
Originally Posted by greyes59 (Post 7384083)
I WANT TO BUILD A 3.0 ENGINE USING 10.5 cr JE PISTONS AND S CAM AND WEBER 40

CAN I GET AWAY WITH SINGLE PLUGGING THIS ENGINE USING CALIFORNIA 91 GAS?
Nossir,....thats a sure-fire recipe for buying new pistons again very soon. :)

10.5:1 on single ignition requires race gas, especially in warm weather.

greyes59 04-13-2013 02:16 PM
Wow.! Thanks for the useful info.


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