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PAT4's Avatar
 
Join Date: May 2003
Location: Paris
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911 2.2 E pistons and cylinders

Hi all,

I am planning to rebuild my 2.2 T this winter and I am planning to replace my pistons and cylinders with a 2.2 E set to increase CR.

1 - is it a good idea

2 - do you think that I should get 2.2 E camshafts to run with (carbed 40 IDA)

3 - what is the right price for these parts, used in good condition

Old 10-16-2005, 02:51 AM
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I would even try to find 2.2S parts if possible.

1) It's a great idea.

2) Yes! You can reset your Zenith carbs and run them too...

3) Maybe me. Check the for-sale board, put up a wanted ad, etc., etc.
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Old 10-16-2005, 03:31 AM
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The fact that the 2.2 T crank is not counterweighted is not a problem to run 2.2 E pistons and camshafts ?

And may be my heads ports too small ...
Old 10-16-2005, 04:19 AM
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They are a little on the small side for an E grind now that I think about it...you could have them ported to maybe 31/31 or so and that would be ideal for a street engine on E cams. Not a problem to run the non-counterweighted crank (IMHO). It can take some rpm, especially if you balance it (even just matching rod and piston weights and such is very beneficial). Best, Scott
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Old 10-16-2005, 04:28 AM
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Use Solex (very early 911) cams - if you can find them, they are more streetable than the S cams but have more kick than the standard E's

John
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Old 10-17-2005, 06:21 PM
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I had my 2.2T rebuilt with new Mahle S pistons and cams reground to E specs. Didn't touch the carb settings. The heads were rebuilt by EBS to original specs if I remember correctly. Good power, a lot better than the T specs.

-Dan
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Old 10-17-2005, 07:03 PM
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Dan;

What size venturis ?

John
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Old 10-17-2005, 08:03 PM
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On 2.2 T, standard venturi was 27, both on Weber or Zenith
Old 10-18-2005, 03:54 AM
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stock sizes as far as I know. Probably could change them and get more performance at higher RPM's but am holding off for now. Runs great as is.

-Dan
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1968 911 Coupe
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Old 10-18-2005, 05:48 AM
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The 2.2 have the same port and valve sizes for both the T and E. The S had larger valves and ports.
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Old 10-18-2005, 07:58 PM
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Quote:
Originally posted by jstobo
The 2.2 have the same port and valve sizes for both the T and E. The S had larger valves and ports.
In 1970-77 port size varied but all the valves in production 2.2 -2.7 were the same.
Intake= 46mm
Exhaust=40mm


E piston are cast not forged but I like the compression ratio of the E better than S considering fuel availability.

With carbs I like Solex cams. They were designed from a clean sheet of paper as the only cam available so it is a great all around cam for carbs. E cams were designed to run with MFI. $300 good used

I would run 32 mm venturis. Small enough for good low end and yet still flow enough air to run at top end.

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Last edited by Henry Schmidt; 10-18-2005 at 08:14 PM..
Old 10-18-2005, 08:04 PM
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