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Registered
Join Date: Oct 2004
Location: Fayetteville, NC
Posts: 680
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Help! Need part info
I'm attempting to rebuild an engine for the first time (I love pain) and have come across some part # I cant find. The car is a 77 911 w/2.7. Are RS pistons good/bad?
What are the following as far as alusil/nikasil/year/type/etc: Cylinders- 90ZN2 W5 and 6 Case- 910 101 102 7R Engine serial #- 6551182 Pistons- 90P27 Camshaft- (R) 911 105 144 0R (L) 911 105 143 0R Camshaft tower- 901 105 11 0R Thanks
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'77 911S w/'81 3.0/MegaSquirt/MSD '81 911SC stock |
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07-26-2005, 01:57 PM
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Join Date: Feb 2004
Location: California
Posts: 926
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The camshafts are regular 2.7L CIS "S" cams. Depending on you plans
for the engine, you can get them ground to SC specs as an upgrade.
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John Dougherty Dougherty Racing Cams |
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07-27-2005, 09:52 AM
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Location: Fayetteville, NC
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Camgrinder,
Are the RS pistons good/bad?
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'77 911S w/'81 3.0/MegaSquirt/MSD '81 911SC stock |
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07-27-2005, 10:01 AM
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GAFB
Join Date: Dec 1999
Location: Raleigh, NC, USA
Posts: 7,842
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E,
RS Pistons are great but it sounds like you have normal CIS 2.7 pistons. If you are interested in using RS pistons you'll probably want to change to carbs or mechanical injection and also change cams. There are plenty of other mods to do 'while you're in there' that will make your build sheet look better and bank account look worse. Where in NC are ya?
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Several BMWs |
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07-27-2005, 10:39 AM
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Irrationally exuberant
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Re: Help! Need part info
Quote:
-Chris
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'80 911 Nogaro blue Phoenix! '07 BMW 328i 245K miles! http://members.rennlist.org/messinwith911s/ |
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07-27-2005, 01:54 PM
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Join Date: Oct 2004
Location: Fayetteville, NC
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dtw,
The pistons I have are not CIS, they have valve pocket opposite from each other and one is slightly larger than the other. The cylinders are nikasil. Right now they are at the machine shop. I bought the car in Oct '04 and because of leak decide to rebuild. I already know this not the original engine. My plan is to EFI (TBitz). I'm in Fayetteville (Air Force). I was up your way visiting family last weekend, Six Fork and Lynn area. Chris, I think only 1 or 2 had the W6 on them. I did mark the cylinder on them when they were removed. 
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'77 911S w/'81 3.0/MegaSquirt/MSD '81 911SC stock Last edited by EPorsche; 07-27-2005 at 04:18 PM.. |
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07-27-2005, 02:26 PM
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The Blue Pheonix
