Re: 2.3 head on 86 SPG, need help... - Saab Performance Bulletin Board - Saabnet.com
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Hey Fish, your on the right track! Most people don't realize just how bad Saab messed the intake ports up on the '86 to '93 C-900's! The roof of one of each of the intake ports were lowered in '86 which wouldn't have been so bad but they also screwed up the short side radius to the valve. Anyway a non-ported 2.1 900S head (same as the mid year 2.3's) will out flow a ported 2.0 head! The '85's didn't have the messed up intake ports but they have 4 less cc's in their combustion chambers which would raise the compression ratio to almost 9 1/2 to 1. The 2.1 heads on the other hand have 2 cc larger chambers which is great because 8 3/4 to one is ideal, Saab was pushing it at 9 to 1 trying to get rid of some turbo lag.
posted by 64.166.166...
Posts in this Thread:
- 2.3 head on 86 SPG, need help..., Fish, Thu, 21 Feb 2002 16:04:18
- 2.3 and 2.1 nearly identical, Vince, Fri, 22 Feb 2002 14:58:14
- Re: 2.3 head on 86 SPG, need help..., Seth S, Fri, 22 Feb 2002 00:37:18
- 2.3 cams, Ubipa, Fri, 22 Feb 2002 09:00:40
- Re: 2.3 head on 86 SPG, need help..., 900 Aero
, Fri, 22 Feb 2002 00:34:16 <-- Viewing This Message- cam info, Ubipa, Fri, 22 Feb 2002 08:43:03
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