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73ess 73ess is offline
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Join Date: Apr 2000
Location: San Francisco, CA
Posts: 542
Result of Modifications to my '88 930

Looking through the old service records for my 88 930, I have discovered that the first owner had a shop install the following cams, in place of the originals in June of 1993, when the car had only 15,700 miles on it:

105 246 09 964 - C2/4 camshaft (right)
105 247 07 964 - C2/4 camshaft (left)

So I'm assuming these are stock 964 Turbo cams?

In addition to these cams being installed, the following was done at the same time:

Performance valve job, including guides (tapered high flow) and surfacing heads. Convert heads for twin plug set up and port. Port match intake manifold and injector spacer blocks.

Sublet heads for head surfacing, valve grinding, valve lapping and mating. Assemble fuel injection system, install new (93) fuel pressure regulator & set air flow box. Install TEC-1 Dual Plug Kit and wire as needed.

INSTALL Garretson Intercooler, K27-7006 turbocharger and GHL exhaust system.

So I'd like to know specifically what effect these modifications have over a stock 883.3 930? More HP? Or no HP change, just improved response and powerband moved higher up in the rpm range?

Oh, also, I'm really curious what effect these modifications have on smog emissions? Wouldn't the twin plug setup ensure a cleaner burn?

Last edited by 73ess; 10-09-2009 at 12:18 AM..
Old 10-08-2009, 11:56 PM
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