Re: (ported head) best bang for the buck - Saab Performance Bulletin Board - Saabnet.com
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Re: (ported head) best bang for the buck
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Posted by John Vanlandingham [Email] (more from John Vanlandingham) on Tue, 16 Jan 2001 16:43:56 Share Post by Email
In Reply to: (ported head) best bang for the buck, marq, Thu, 11 Jan 2001 15:26:37
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Hi Marq, I've built some nice Saabs and lately have built as my next rally car a Ford Sierra Cosworth engine as, amongst other things, a learning exercise. The 2 motors a soooooo close that it is amazing. Particularly when you consider the Cossie makes 225hp stock with cat and that all the dimensional data (port area,bore/stroke, crankshaft dims, valve sizes, valve lift, cam duration, everything you can measure) are within 1or2% being the same. The biggest difference is rod length-advantage SAAB at 134.25mm c-c. The biggest gains are found in the manifolds and the engine management. Tell whoever will do the valve grind and guides to "clean up the short side radius" in the VALVE POCKETs. Any more than that is an utter waste of time. Save your money for FORGED PISTONS, a better TURBINE Housing, a better waste gate actuator, 3 inch exhaust,and a REAL, reliable multi-plate LSD. Contact me if you want more details, but do it by phone, I am not a typist.
REmember it's a turbo, not normally aspirated. Different rules apply, porting, lift, duration are fine. We just want more TORQUE in tha same powerband, don't we?

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