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stugray |
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None ![]() |
I have rebuilt a type IV a couple of times, but I was young & naive.
This will be a 2.0L with stock FI for vintage racing. 1 - How do I hook up the stock fuel pump line(s) to a fuel cell? 2 - are there any Cams other than the stock one that will give me increased performance while still using the stock FI? 3 - What compression ratio should I target? I am working that step right now - CC'ing the heads & setting the deck height. 4 - The CAM thrust bearing has just one side with the thrust plate on it. If I recall, when I upgraded my last 914, the guy at the performance shop gave me TWO with the thrust bearing on it (one for each side). Should I be looking for those? 5 - After splitting the case, there were 2 or 3 "bumps" that needed a little "flattening out" with a file. Can the case be damaged by trying to clean up the nasty spots, or is there a way for me to make sure to get it right? I imagine that the only thing I could do would be to remove all the studs and rub each side over some sandpaper taped down to a very flat surface... Any help is appreciated. Stu |
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stugray |
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None ![]() |
Ok Next update:
I have the European Motor Works, Keith Black 96mm Piston & cyl set. The deck height measures (with NO shims) .034-.035 and i have measured TWO of the cylinders on both sides with ~20 meas. samples. i will do the other side next. I measured the 2.0l heads to have ~60cc of combustion chamber volume. I will not be running head gaskets. crank is stock. Based on the various cR calculators I have, it says that i need to reduce my combustion chamber volume from 60cc to 48cc to achieve 10.5:1 CR. Then I plan on reducing my CR to 9.5:1 using the shims. Two questions: 1 - How much do I tell the Machine shop to flycut from the heads to go from 60cc to 48cc (I think I have an answer, but want a second opinion) AND 2 - What is a good source of cylinder shims of various thicknesses? Stu I would use Jax's idea above, but i dont have access to a CNC mill ;-) |
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