1203 replies to this topic

[HARBER07]

Well to change the oil pump its engine out realistically anyways, so might as well strip it down and inspect it for what its worth. I'm 100% sure it wasnt a bit of swarf on the journals, and from day 1 the hot oil pressure was 30psi, but just randomly dropped to 25psi one day. Unless its my gauge thats going tits up?

[liirge]

hmm, again unlikely the gauge is going mad, is it an electric one? or Capillary?

[HARBER07]

Im just hoping its something easy to solve, though i know the lump has gotta come out really

Its a capillary gauge. Is there anything else that could cause low pressure at idle when warm? I'm using 20W50 obviously. Just wont to be sure before i start getting cranks and shells sorted etc.

One other thing - im guessing its not a big end shell issue, as its not in the main oil gallery? So it IS mains and thrusts?


Cheers.

Edited by HARBER07, 01 September 2009 - 08:20 PM.

[liirge]

What pressure does it get when cold?

[liirge]

As im thinking along the lines of the Oil Pressure Relief valve has stuck..

[HARBER07]

Pressure at idle when cold is around 70psi

[liirge]

Could be worth a try mate, could convert to the Cooper S ball at the same time!

[HARBER07]

Cheers for the help mate! Thats a damn sight easier to change than the main bearings!

[liirge]

Its a bit of a long shot. You should be getting around 40Lbs of oil pressure at idle..

[HARBER07]

Well its somewhere to start!

[sweetser]

Tom.. no gauges means no worries trust me lol

EDIT: Apart from petrol gauge, thats a pain in the arse lol

Edited by sweetser, 02 September 2009 - 10:45 PM.

[liirge]

Did you put new Oil gallery plugs when you did the engine?

[mighty mini jack]

HARBER07 - 568 Miles In The Mini - Malvern FTFW says:
*ragged the living *melon* out of it coming home
*sat it at idle on drive
*dropped to about 22 psi :|

[HARBER07]

Yeah maybe thats why LOL . But seriously now, engine it coming out at weekend, 22psi at idle is way too low for my liking. Its a fresh new build FFS!

Right well i checked the relief valve - has the ball & spring , and i never touch the oil gallery plugs, i always leave them well alone. Thay all looked good though to be honest, no signs of anything strange.

[Jackman]

22psi... thats not that low to be honest. What oil do you have in it?