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-   -   Fuel efficiency/MPG - MFI and other (http://forums.pelicanparts.com/porsche-911-technical-forum/473655-fuel-efficiency-mpg-mfi-other.html)

jluetjen 05-11-2009 03:58 PM

The GE60 cams can't help the MPG given the overlap. You're most likely flushing quite a bit of fuel (relatively speaking)out the exhaust at part throttle.

BTW - I get a consistent 20 MPG with my 2.0E with MFI.

javadog 05-11-2009 03:59 PM

How about those GE60 cams, folks? Not going to help him get good mileage....

JR

PS: I see I type too slowly....

kenikh 05-11-2009 04:06 PM

Quote:

Originally Posted by javadog (Post 4658103)
How about those GE60 cams, folks? Not going to help him get good mileage....

JR

PS: I see I type too slowly....

How'd I miss that? He's lucky to get what he's getting, considering how fun it is to rev. :D

jtkkz 05-11-2009 04:18 PM

'74 Carrera
2.7
JE 9:5
Elgin Mod S cams
40mm PMO carbs / match ported manifolds
Match ported heads
etc.....
dynoed at 221 HP @ rear wheels

I get about 8-10 mpg

http://forums.pelicanparts.com/uploa...1242087417.jpg

Danish Dynamite 05-12-2009 05:38 AM

We adjusted the compression by adding a thicker cylinder base gasket. We had first calculated the compression, but when we assembled the engine, we carefully filled the combustion champer with oil messuring how much it would hold before it was full. In that way we could se what the actual compression would be - 10.2

The GE60 cams should be pretty simular to an S-cam. But even though the engine is 3.0 liter, the power really doesen't come on before past 4500 rpm..

Jtkkz -> Wow! That is even worse!


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