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

[stugray]

Ok, so what I am learning here is that nobody has ever had stock heads cut to ~10:1 compression ratio assuming stock pistons/stroke & deck height.....

RRRIIIIIGGHHHT wink... wink... (IMG:style_emoticons/default/lol-2.gif)
SO what is the secret handshake???

I had one guy tell me that he had built at least two 914 SCCA engines that WON THE SCCA championship.
Yet he told me to run 100% stock compression with webers... In Colorado......

How hard-ass do you have to be to not share this information? (IMG:style_emoticons/default/blink.gif)

If I could machine them myself, I would CC them at every thousandth and make a nice lookup table.
Not rocket science, but not easy to calculate chamber volume from a cast head in advance.

On another thread people posted stock CR calculators, but they do not factor in the shape of the type-IV combustion chamber and what removing X results in Y of CR change.

Stu

[jaxdream]

Ok, so what I am learning here is that nobody has ever had stock heads cut to ~10:1 compression ratio assuming stock pistons/stroke & deck height.....

RRRIIIIIGGHHHT wink... wink... (IMG:style_emoticons/default/lol-2.gif)
SO what is the secret handshake???

I had one guy tell me that he had built at least two 914 SCCA engines that WON THE SCCA championship.
Yet he told me to run 100% stock compression with webers... In Colorado......

How hard-ass do you have to be to not share this information? (IMG:style_emoticons/default/blink.gif)

If I could machine them myself, I would CC them at every thousandth and make a nice lookup table.
Not rocket science, but not easy to calculate chamber volume from a cast head in advance.

On another thread people posted stock CR calculators, but they do not factor in the shape of the type-IV combustion chamber and what removing X results in Y of CR change.

Stu

Stu , since you have the heads that you want to run ,try flycutting the edge ( .010, .020,etc. ) of the plate to step it down into the chamber for CCing to get an idea of what possibly a flycut to the head might produce . It would probably be approximate , but would give an idea of a say what a flycut of the cut to the plate might give . It is cheaper to cut the plastic plate than cutting the heads several times to get to a target number and yes it might not be exact , but give some kind of idea of what could be a possible one cut to the heads might produce. Shim cylinders from there . Good Luck to ya ....

Jack