Dry sumping a mini A-series
Discussion
Following on from the discussion in Engines and Drivetrain.
Just a thought I had as to whether this has been attempted at all and with any success?
My thought goes along the lines of for very high perfomance A series engines:
1. In order to extract that little bit extra
2. Possibly improve drivetrain reliability through seperate lubrication
What are other peoples knowledge and thoughts on this?
Just a thought I had as to whether this has been attempted at all and with any success?
My thought goes along the lines of for very high perfomance A series engines:
1. In order to extract that little bit extra
2. Possibly improve drivetrain reliability through seperate lubrication
What are other peoples knowledge and thoughts on this?
the problem is that with dry sumping a mini you will remove the oil from the gearbox!
ive seen minis that run 'semi' dry sump sytems where they run an external oil tank so the engine, has, in affect double the oil - this tuns in conjunction with extra filers etc
most people now a days (with the better quality modern oils etc) jsut run a second remote oil filter to filter the oil both sides of the pump.
ive seen minis that run 'semi' dry sump sytems where they run an external oil tank so the engine, has, in affect double the oil - this tuns in conjunction with extra filers etc
most people now a days (with the better quality modern oils etc) jsut run a second remote oil filter to filter the oil both sides of the pump.
FWDRacer said:
Rich - Can this be pre-pump filter set-up be plumbed in on A+ units (simple on A-series it has boss on the oil gallery?)
Any further info?
ive seen a few ways of doing it, my 8 port monster has the block drilled and tapped (like the old fj blocks), but ive also seen people block the oil pick up off, so the oil exits the pick up through the little metal plate that is normally a blank, goes through a filter, then back in.Any further info?
i could maybe sort some pics if you want
We dry sumped the A series in the 70's to stop oil surge when using a 16 valve head. Oil stayed in the head at high revs so the level in the sump was not high enough to allow pickup through the corners.( BL Metro 2wd Rallycross car). The std pump was used as the scavenge pump and the presure pump was driven off the helix gear on the camshaft where the mech fuel pump was. As we used a 16 valve head the cam only had to drive the oil pump so the profile didn't matter. The oil tank was in the back to help weight distribution (not good for traction though). We had to use large bore hose or the pump would cavitate when the oil was cold. Never had a gearbox or diff problem. Thats all I can remember!!
I'll Dig out some pics if I can find them. They'll need scaning as they will be quite old now, so it may take a while. One thing I do remember was the first time we tested the engine in a Mini at a Brands Indy winter test day, Ricardo Patrese was testing the gold Warsteiner Arrows for the first time at the same test day, it was snowy and we blew the engine up at the bottom of Paddock and he crashed big time on the entry to Clearways. If you can date when Patreses first drove that car it will date the start of our bespoke engine.
When I lived in the UK during the 70s, used to help prepare and run a Maguire Mini with a Gordon Allen Cosworth BDH engine (like Peter Baldwin's Baby 4, but not as succesful). It used a dry-sump system with a scavenge pump and large oil tank, located in the rear of the car. Never had any transmission problems.
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