Need /4 oil pump and pressure line advice, Need to plumb oil to turbo--how?? Options

[Mueller]

I am rebuilding my motor for a turbocharger.

The motor will be using the stock cam so my RPM redline will remain the same as that on a stock normally asperiated motor.

1) Should I replace the stock oil pump?

2) If so, with which one?

3) Will non-stock pump need to be modified?


I need a constant oil flow for the bearings of the turbo.

4) What are my options for getting this oil?

5) Can I plumb into the oil pump?

6) Is there a place on the block I can tap into for the oil?


Thanks,

Mike

[Mark Henry]

The only reason I say Melling... they are asy to get and work very well when you have a front mounted cooler.

Mark,

Do you have horror stories about the Mellings ?? I have neved had any issues with them (other than leaking).. but the O ring cured that many moons ago.

I want Mike to step up in the oiling department and didnt feel that the Melling would hurt him.

I have 2 issues with the melling oil pump:

#One is the oil leaking, the expansion rate of steel vs. aluminum is totally different.
Where do you put the O-ring? On almost all of my pumps I put the O-ring on the cam gear side of the in/out holes (I cut a grove) this stops the oil pissing back in to the case and sucking air.

#Two is it is just too big. You have to try to compensate with heavier relief springs, but again this comes with it’s own set of problems, i.e. you can blow out oil galley plugs.

Now most of my experience is with the type 1 but they have “almost” the same oiling systems. You can also get the Schedeck also in a 30mm size, but Gene Berg made a special full flow pressure relief cover because the oil pressure is too great. If you check the STF type 4um most of the guy using this pump also use this cover, but Full Flow cover only work on type 4 (bug) conversions.


You might not hear from me much for a little while, I have a dozen engines on the bench waiting for assembly, and I just got 2 more yesterday.
Of course everyone wants them now.
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