Engine rebuild, a few questions Options

[stugray]

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

[Cupomeat]

Ok, I'll give it a go and I am sure you will hear more opinions on this;

1. Depending on the fuel cell, you need 3 effective lines; 1. primary suction to go to the Fuel Pump, 2. primary return for fuel back from the FPR, 3, Vent or closed venting line. Not knowing what cell you have, it is not unusual to see 3 lines from a fuel cell, make sure you identify which one the primary suction is (1) and that (3) is above the level of gas.

2. Maybe, but not likely. Talk to Jake Raby and check out webcam. D-jet is very vacuum dependent, so high overlap cams cause poor low RPM running issues.

3. Well, good question. If they are stock 2.0l heads, it seems that 8.6 to 1 is about as high as you'd want to go for a stock motor, but I'd say this is all part of what else you are doing with the motor. If it is a stock class, they might dictate CR.

4. 2 Cam thrust bearings are nice, and would last longer, especially as the cam is always given a side load due to the cut gears.

5. what are these 2-3 bumps? if they are in the sealing surface, you might want to look for a new case. Have the case checked by a machinist show for sunken registers and flat surfaces.
Yes, a case is very likely to be ruined by using a file on it, practically anywhere but on the outside. (IMG:style_emoticons/default/headbang.gif)

You cannot just flatten out a whole case side as that would make the main bearing journals out of round and sure, ALL can be fixed, but it would be cheaper to find a good case.

Ok, I hope that helped.