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Registered User
Join Date: Dec 2014
Posts: 6
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Rebuilding a 901/16 engine 2.0 1969
Hello, I been searching All around the world for a set of piston and cylinder for my engine, but apparently they are no longer in production. My engine is a 901/16 with a compression ratio of 8.6:1. My car is a 911 t manual karmann coupe from 1969. The pistons are diameter 80 mm. I have been offered pistons and cylinder set that have a compression ratio of 9.5:1. I observe that the shape of the piston is completely different, so I am concerned that it won't be compatible with my cylinder head. Can someone help me an give me some guidance with this. Thanks.
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12-04-2014, 05:18 PM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Hi,
The original iron cylinders, and even Biral ones are NLA; everything from Mahle is all Nikasil which is really a good thing. The main thing for you is making sure that your pistons are for the '65-'69 deep-chambered heads, NOT the '70-'73 shallow chamber ones. If you post a picture of the ones you've been offered, it will be much easier to ID them and tell you if they will work or not.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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12-04-2014, 06:52 PM
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Join Date: Mar 2011
Posts: 271
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Could there be any problems with using Nikasil cylinders without having piston oil cooling?
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12-05-2014, 02:01 AM
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Registered
Join Date: Jan 2004
Location: CT
Posts: 11,538
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I have 2.0T pistons and cylinders. PM me for details.
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Tom Butler 1973 RSR Clone 1970 911E 914-6 GT Recreation in Process |
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12-05-2014, 03:28 AM
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Registered User
Join Date: Dec 2014
Posts: 6
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  this are my original pistons |
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12-05-2014, 06:21 AM
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Registered User
Join Date: Dec 2014
Posts: 6
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 These are the one that someone offered me |
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12-05-2014, 08:55 AM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Those pistons looks like they were made for the later (2.2-2.4) heads and will not fit your early ones without a lot of machine work (never a good idea).
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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12-05-2014, 04:38 PM
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Registered User
Join Date: Dec 2014
Posts: 6
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hello Steve, thanks for the reply . the manufacturer ln engineering has taged this set as this "Porsche 911 914-6 2.0 80mm Nickies inc. 9.5:1 JE Piston set" do all of the cylinder heads of the 2.0 lt engines are the same or they are different depending the compression ratio? thanks.
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12-06-2014, 03:55 AM
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Registered User
Join Date: Dec 2014
Posts: 6
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what can you suggest me to do with my engine?
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12-06-2014, 04:15 AM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Quote:
I could make a hundred suggestions, but everything depends on your budget, performance expectations, and how the car will be used.  If you want detailed assistance, take a look at this: Performance Consulting | Rennsport Systems | Porsche Performance Systems and Support
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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12-06-2014, 10:23 AM
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Registered User
Join Date: Dec 2014
Posts: 6
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Thanks for all the information. One last question, are this pistons more adequate?
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12-07-2014, 06:31 AM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Those are 2.0 P/C's and will work just fine with your 2.0 heads.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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12-07-2014, 07:28 AM
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