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Join Date: Jul 2001
Location: mt. vernon Wa. USA
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3.2 SSI's on a 2.7???
will the 3.2 SSI's, listed in the parts for sale section work on a 2.7??? Thick flange is OK, bung is OK. Are the exhaust ports of the 2.7 vs. the SSI diamater OK?
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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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08-18-2006, 05:18 PM
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SSI's are all the same, when used on smaller 2.2's all the way up to the 3.2's. They are considered by many to be a bit restrictive for the 3.2 and larger applications, at least for any high RPM power. SSI's will work great on a 2.7-- they will be appropriately sized. I've read they were designed around the '74 exchangers, which were obviously for a 2.7. You may need to change the exhaust studs in order to account for the thick flange.
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08-18-2006, 05:49 PM
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they are not all the same there extractor tubes on the larger thick flange models
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Ben 89 944,85.5 944 914-6 2.4s GT tribute. 914-6werkshop.com |
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08-18-2006, 05:58 PM
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The 2.7 w/the dreaded thermal reactors used thick flanges on the reactors, so that is not an issue, but as Ben points out I think that the tubing (extractor tubes) above the flanges, on the 3.2 version of the SSI's may need to be buzzed off to fit the 2.7. Thanks for the replies.
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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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08-18-2006, 06:58 PM
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Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
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this is my SC SSI. They fit perfect to stock 2.7 heads.
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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08-18-2006, 08:22 PM
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Thanks Ronin. No mods required?
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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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08-18-2006, 10:01 PM
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Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
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Quote:
none to head mounting. The heat exchanger seam was hitting the tranny return spring. Some guys trim it off and some hammer it away. I gently tapped the seam upwards many many times to get a clean look. SSIs are probably the nicest low key mod you can make to your engine imo.. enjoy 
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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08-18-2006, 10:45 PM
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