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resident samsquamch
Join Date: Oct 2005
Location: Cooterville, Cackalacky
Posts: 6,815
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Not sure what your plans are for the car/engine, but I'd be reluctant to go with 100mm Ps&Cs for a turbo street engine. If I'm not mistaken the case (cylinder spigots) will need to be machined to accept them. The 98s are "drop in". Nickies are nice, though.
I've heard that for a CIS street engine, the SC cams work better...better low end to mid range power and that the 964 cams work well at higher RPMs. I think the SCs run out of steam at about 5,500 RPMs. Having said that the 964 cams might be better when or if you decide to go with EFI.
Best advice I can give you is to find a machine shop that you can trust that eats and breathes Porsche engines. The "bolt-on" stuff is all great, but unless you've got a solid foundation, you're asking for trouble. The majority of my budget was spent with the machinist.
Maybe you mentioned it, but how are you planning to fire the additional plugs? What ignition?
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-jeff
back in the saddle: '95 993 - just another black C2
*SOLD*: '87 930 GP White - heroin would have been a cheaper addiction...
"Ladies and Gentlemen, from Boston Massachusetts, we are Morphine, at your service..." - Mark Sandman (RIP )
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