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-   -   3,1 engine weber 40 (http://forums.pelicanparts.com/porsche-911-technical-forum/797202-3-1-engine-weber-40-a.html)

greyes59 02-17-2014 02:40 PM
3,1 engine weber 40
 
I have a 3,1 engine project:

70.4 crank
97 mm JE 9.5 cr pistons
3,2 heads
twin plug vs single plug
S cam vs dc 80cam

I would like to know if I can use weber 40carbs for this engine. hopefully it is not too small for the engine.

Trackrash 02-17-2014 03:03 PM
IMO it will depend on your intended use. For a street or AX motor you will be better off with the 40s. However, depending on your cam choice and exhaust you could possibly gain some HP with the 46s.

Steve@Rennsport 02-17-2014 03:05 PM
You need 46's for that application.


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