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TurboKraft TurboKraft is offline
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Join Date: Mar 2005
Location: Phoenix, AZ
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Hi Sean,

I would definitely keep the 964 cams.
Stock 964 cam timing is 1.26 +/-0.1mm, so while not perfect you were very close, and with a minor difference left to right.
Many people advance the camshaft more, and some cam grinders give a spec of 1.53mm.

Flame rings aren't necessary at this boost level. That amount of time & money & effort would be better spent on ARP head studs. If replacing the studs, you could replace the rod bolts at the same time and that makes the bottom end pretty much bulletproof.

If I had the heads off, I'd port & polish them before I'd flame ring them. More expensive, but much more beneficial. A complete job includes TK's billet injector blocks with a matching bore, port-matching the intake manifold, and port-matching the exhaust manifold. That's a heavy breathing setup with no loss in low speed drivability, just gains everywhere.

Good valve springs, good valve job.

No reinventing the wheel, a basic solid setup.

Tune the CIS so it doesn't run lean up top, and go drive and enjoy for another 65k miles.
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Old 02-07-2014, 10:16 AM
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