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Old 08-18-2008, 06:26   #1 (permalink)
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390 oil restrictors

Hi I have got an new rebuild 390 engine, but my oil pump, is sending too much oiul to my head, o the oil is going to my cylinders.

Is there some one the can tell me were to get these?
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Old 08-18-2008, 08:17   #2 (permalink)
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Re: 390 oil restrictors

I would use a .90 restictor call Keith Craft in Arkansas, he can help you out or lead you in the right direction.
here's a link

Keith Craft Performance Engines - Our Engines
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Old 08-20-2008, 09:55   #3 (permalink)
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Smile Re: 390 oil restrictors

you can just make them yourself too, most folks I know do this.
All you need is a cylinder that slips into the head when the rocker assy is off, to block the oil up to the rockers. Then, drill about a .090" hole in that part, and slip it in, make sure it is below flush so it doesn't interfere with the rocker stand fit. Try to design it so you can get it back out easily.

You can also use a #90 or so Holley Jet, some folks go even smaller.

Are the rocker shafts or rockers worn? Sometimes that will cause a lot of oil up on top, the restrictor is an ok crutch (I've done it) but new rockers/shafts might help too.
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Old 08-21-2008, 00:38   #4 (permalink)
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Re: 390 oil restrictors

Thanks for the replys but is there some one the can provide me with som part no. on these #90 or so Holley Jet ?
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Old 08-28-2008, 07:09   #5 (permalink)
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Re: 390 oil restrictors

Quote:
Originally Posted by kusken View Post
Thanks for the replys but is there some one the can provide me with som part no. on these #90 or so Holley Jet ?
Just use any holley jet and Drill it out to about 90 thousands.

Bill
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