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What P/C to use on my 2.7 rebuild
My case and associated parts are back from the machinist, and I'm getting ready to have a blast. I'm debating using new (old stock from Zim's 15 years ago) CIS Alusil P/Cs that I have on hand, or... I've got a set of Nikasil P/Cs with shot pistons, but I think the cylinders are OK. Would I be better off just sticking with the Alusils, or have the Nikasil cylinders refreshed and fitted with JE Pistons and running a fairly mild (T or E) cam.
TIA. John.
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John Original Owner 1973 911T. Webers, SSI, SAW & Polybronze, Carrera chain tensioners, 'A' calipers |
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05-19-2015, 04:45 PM
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Join Date: Oct 2008
Location: Nash County, NC.
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Open it up to 2.8, JE 9.5 cr and a pair of solex cams. A set of CIS heads would breathe better than the T heads unless you're. Ported.
Bruce |
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05-20-2015, 02:34 AM
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Join Date: Jul 2001
Location: mt. vernon Wa. USA
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I would verify the condition of the Nikasil cylinders and, if ok, I'd go with them and JE 9.5:1 pistons, E-cams , headers and sport muffler. Makes a nice 2.7S street rod engine.
regards, al
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[B]Current projects: 69-911.5, Previous:73 911X (off to SanFrancisco/racing in Germany).77 911S (NY), 71E (France/Corsica), 66-912 ( France), 1970 914X (Wisconsin) 76 911S roller..off to Florida/Germany RGruppe #669 http://www.x-faktory.com/ |
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05-20-2015, 11:43 AM
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Thanks, Al. Do you happen to know what grade of gas I need to run with those JE 9.5:1 Pistons?
John.
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John Original Owner 1973 911T. Webers, SSI, SAW & Polybronze, Carrera chain tensioners, 'A' calipers |
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05-20-2015, 03:31 PM
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Location: mt. vernon Wa. USA
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John,
I've had a couple of 2.7s in that state of tune (one of my favorite engine configurations..I just finished building one) and nothing special regarding the fuel. You don't need dual spark/plugs until you get over 10:1 or so......I just use premium unleaded, which is 89 octane at my gas station. ......listen to this one............. https://www.youtube.com/watch?v=EWB99lddFew regards, Al
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[B]Current projects: 69-911.5, Previous:73 911X (off to SanFrancisco/racing in Germany).77 911S (NY), 71E (France/Corsica), 66-912 ( France), 1970 914X (Wisconsin) 76 911S roller..off to Florida/Germany RGruppe #669 http://www.x-faktory.com/ |
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05-20-2015, 06:41 PM
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