Rebuild. Couple Q's b4 I QQQQ

[johngriff]

Yeah, Im dumb.

CA ran for about an hour, then death. Go john. I rock.



I dont really want to q/a on my setup, bicker or argue so i'll just get to the point.

Purpose: Track Engine for Summer Until I finish my SR2.2 Build.

Status, knocking (source unknown).

Rebuild: New Stock crap for bearings, rings,valve guides, headstuds.

Cometic H/G? They suck on sr's, comments on CA?

Oil pump: Some rebuilt racing pump, the link appeared on this board, and its bookmarked under on my laptop.

Headwork(machine): Probably going to have the same person who did my SR head do a touch up on this guy. Any suggestions from past experience. With the SR we picked up alot of flow deshrouding the valves. (view work at http://www.rpsportengineering.com)

Head/Block Machine work: Full ballance (duh), any insights on what I have seen commented on but not found. An oil return enlargement to keep oil flowing back down to the block from the head @ High RPM's? Could anyone specify on this? I searched, to no avail.

I think that is it for my Q's.

Thanks!

[johngriff]

Im going to bump this just once.

I really just wanted to know about the oil return machine work.

hmmm...

thanks

[r34 gtr]

as far as i know i have only heard of people swapping to a larger capacity oil pump when they want to increase some flow. im not exactly the ca god here, but i am pretty confident it doesnt need too much in the way of massaging to get that oil flow going. this kind of intrigues me, as my head is going in to the machinist probably tomorrow and it sounds like a good idea. looking in there though it looks like a little smoothing of some rough edges is about all you would want to do.

[johngriff]

It is a documented issue with high rpm track ca18det's and rb25det's. Basically, some correct for it using a higher capacity oil system, by adding external filters and coolers. I am doing that, but.. I wanted to do this too. It seems that everyone who eludes to it, does not specify on how it is done. I am in the belief that it is a combo of block and head work, basically the head becoming full of most of the engines oil and the drain/return not allowing it flow the oil back fast enough.

So in essence, even w/the larger volume oilpump, it would run out of oil because it is not returning back to the pan at a fast enough pace.

Especially since I will be doing a bunch of dumb stuff to this engine like flat shifting it and bouncing it off the limiter, i wanted to try to buffer as much as possible. (oxymoronic)