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Registered
Join Date: Apr 2009
Posts: 259
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HP Difference between 90mm & 93mm
Guys
My motor (2.5ss) is out for some mods (GT-3 oil pump & DC-62 Cams in place of the Web Cam 120/104 that were in it) as well as a freshen up. This motor is pretty much maxed out as far as mods go. I have 90mm cylinders with 10.5 JE pistons in it now; my question is what would be the approximate HP gain if I went with some 93mm Nickies/10.5 JE to bring it to a 2.7SS. It can breath, all windage mods done with Extreme's twin plug 2.5 race heads. While the motor is out and apart I am trying to decide if the gain in HP/TQ is worth the jump & $$$ going with the Nickies/2.7ss. It is not a track car but in LTW 71 911 used for back road/DE. Thanks for any info. Jimmy |
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09-06-2010, 06:49 PM
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Registered
Join Date: Jun 2003
Location: Camarillo, Ca.
Posts: 2,418
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Hi Jimmy,
Not sure of all the details your build but approx 15-20hp would be my expectation.
__________________
Aaron.  F.S. 1965 Solex engine w carbs/cleanerBurnham Performance https://www.instagram.com/burnhamperformance/ |
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09-06-2010, 08:41 PM
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Join Date: Apr 2009
Posts: 259
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Aaron,
Thanks for the reply, that's a good bit.... Now to decide if I want to spring for it. Jimmy |
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09-06-2010, 08:59 PM
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Registered
Join Date: Sep 2009
Location: Germany
Posts: 124
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Hi Jimmy,
what induction do you run on the 2.5SS? |
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09-06-2010, 10:04 PM
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Registered
Join Date: Apr 2009
Posts: 259
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atelier14
I have 46 PMOs. Jimmy |
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09-07-2010, 08:29 AM
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It's a 914 ...
Join Date: Jan 2008
Location: Ossining, NY
Posts: 4,706
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I've been running a 66x93 2.7SS track engine for years, and have been happy with it.
Scott |
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09-07-2010, 09:22 AM
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