Prez
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| posted on 15/3/06 at 04:10 PM |
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Dry Sump Systems
A bit of a general question about dry sump systems:
I understand that the scavenge pump draws oil from the dry sump pan and pumps it to a seperate cylinder. Is this cylinder then plumbed in to the
engines regular oil pump via the original oil pick up point? I assume this must be the case since otherwise the original pump (unless disabled
somehow) would just pump air into the oil galleries, obviously not a good thing! Im assuming there are variations between different set ups etc. I
hope this makes some kind of sense.
Cheers
Adam
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NS Dev
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| posted on 15/3/06 at 04:25 PM |
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there are basically two "types" of system.
the cheaper ones do exactly as you say, one way or another the std oil pump draws from the tank.
on the better systems, the normal oil pump has its pumping parts removed and it's ports blanked off, and a further stage on the balt driven pump
then provides the oil pressure for the engine, hence the commonly used "three stage pump" (two scavenge and one pressure)
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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stevebubs
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| posted on 15/3/06 at 04:26 PM |
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quote:
Originally posted by Prez
A bit of a general question about dry sump systems:
I understand that the scavenge pump draws oil from the dry sump pan and pumps it to a seperate cylinder. Is this cylinder then plumbed in to the
engines regular oil pump via the original oil pick up point? I assume this must be the case since otherwise the original pump (unless disabled
somehow) would just pump air into the oil galleries, obviously not a good thing! Im assuming there are variations between different set ups etc. I
hope this makes some kind of sense.
Cheers
Adam
That's a scavenge-only system described above.
A Scavenge + pressure system would involve the engine's internal pump having it's rotors removed.
Stephen
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JB
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| posted on 15/3/06 at 07:04 PM |
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Dry Sump
I run a 3 stage pump.
The original oil pump is removed and I tapped the oil way from the pump into the block and put in a grub screw.
To get oil back into the engine I removed one of the core plugs / blanking plugs on the end of the main oil gallery and bolted on a dash 10
fitting.
The dry sump system works very well but it was so much work, building a sump, mounting the pump, routing all the hoses, mounting the tank, remote
filter etc.
John
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