Quote:
Originally Posted by Flat6pac
Then why did the factory make specific components for 9.8?
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Aren't the ROW Late SCs CIS Basic? The Lamda and non-Lamda cars have different parts.
Quote:
Originally Posted by Flat6pac
The 77 carrera 3.0 is 200 hp but exactly the same specs as the 78 sc at 180hp.
Where did the 20 horses go?
Bruce
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They were not the same specs. For starters, the 930/02 had the lighter rotating assembly of the earlier cars, and the cam timing was different, and the US market cars had a different exhaust (a cat).
What I am not sure of is the Intake port sizes of the ROW SC, Wayne and Bruce Anderson's books show them having the same size intake ports as the US models, but there have been a lot of reports on this forum that the books are incorrect, and the 930/10 has the large port heads found on early SCs. The half point compression in the late SC engines (930/16 @ 9.3:1 vs 930/10 @ 9.8:1) is not enough on it's own to boost power by 24HP (the cam timing is different as well, as well as the lack of smog crap).
The fact remains, there is plenty of headroom in the stock CIS system to handle the extra compression. It has been proven many times by a bunch of different people on this forum, not to mention a bunch of VW guys. There were a lot of cars with CIS, and the water-cooled VW guys are not as averse to making big modifications. My GTI race car put 100HP to the ground with the stock CIS which was made to produce 90HP at the crank. It has been a while, but IIRC the conventional wisdom for the VW guys was like 140 HP before you ran in to fuel problems. That is about 50% more than stock.