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JScaramella JScaramella is offline
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Join Date: Nov 2004
Location: New Jersey
Posts: 378
2.7 RS Upgrade to 2.8 or?

From the forum past threads I have seen, I came up with the following possible upgrade. Any suggestions are appreciated


What I have:

72 911
2.7 RS spec motor
The Mag case has the time certs and racewear bolts.
2.7 Mahle 8.5-1 pistons
MFI
S Cams
Large front oil cooler
Fulls susp mods
Brembo big break kit F&R

What I want:

I thought about a simple 9.5 or 10.5 upgrade but than seems less cost effective as I will have the entire motor open anyway.
Also the suggested outcome is not lighting my fire.

From what I have read here I can upgrade to a 2.8 displacment and twin plug set up with this case. True? 2.9 seems like its a push?

I plan to use a crankfire system as the twin plug Dist. I have seen are very costly! 3-4k alone. Can that be right?

I would retain the MFI, assuming that this has more adjustability to compensate for the larger displacment.

Use either a Mahle 2.8 set up or J&E. I prefer the Mahle but $ will be the ultimate factor.

I also have the s cams which I'd like to keep. My mech. suggested a possible GE 60 but did perfer that I keep the S cams for the power band.

What can be expected in Bhp from that set up.

I assume, as I have no dyno info on the 2.7, that I have at least 170 RWH now?

Thanks guys

Happy Holidays
Old 12-17-2004, 05:51 AM
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