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high volume oil pump

Hey there,

I was just wondering the advantages opposed to the disadvantages of using a high volume oil pump.

Cheers

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hey mate,just done up a 202 red to the nuts.was goin to put a high volume on.but i was told the stanard one will work just the same unless goin for 6-7000rpm.she'll blow b4 then? plus high volume will take a few hp off too.keep it stock.

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oo

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They are specifically design for extreme performance aplications where there is excessive clearances (race tollerances) in bearing surfaces etc,, (eg: bearings with 'x' and 'xx' measurments etc.),,
High vollume pumps are not needed for normal/street applications and put extra load on the gears and use more horsepower (neglegable),,
You should not use a low viscosity oil in older engines as the clearances are not designed for it and even with a HV pump, will not provide addequate protection,,
Perhaps you could slap one on a dying old engine to give it some extra protection, but I wouldn't use one on a new engine for normally use,,,,
Cheers

john
Silence is Non Committal
MY SHED

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Cheers
John
:o)

Dislike me for who I am you may, like me for whom I'm not, you never will...
MY SHED

If you are going to run a high volume oil pump get the insurance of a higher capacity sump. Many a moon ago (and this was a 308 so it might me different from a 202 but think it will apply here) I fitted a JP high volume oil pump to an engine I built, put all the good gear in it roller rockers lumpy cam, blah, blah, blah and lunched the motor after about 3 months, cause you ask, well after stripping it down and all the main bearings looking like tin foil, I chased the opinion af some of my mates work buddies who are engineers, looked like oil starvation to me which didnt make sense! But they worked out that as I had a std sump on the oil pump was pumping the oil up the top end quicker that it could run back (with 3.8 diff gears and T400 she had high revs crusing down the freeway) causing air pockets in the oil system and cavitating at times. Rebuilt the engine, 7L high energy sump and never had the problem again. Food for thought.

Cheers

[http://gallery.oldho...|My Shed]

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Enjoy

Fletch

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