Another Oil Pressure Problem Update - Onwards
Turbo Mini Forums

Hmm this may explain a few things, I'll give a few things ago tonight. Cheers fellas!

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

All as above, that's why PaulH's test is a very easy way of determining if the suction guaze, suction line (through the O ring between block and box), pump itself and relief valve are all OK.

Once you are beyond the banjo bolt/external pipe, it's back to the filter, galleries, bearings etc.

If you do the test, make sure the output from the banjo bolt hole goes to your gauge only for the test, ie, don't try to Tee it.

And don't crank it too long because there is NO oil going to the bearings while the external pipe is off.

Schrödinger's cat - so which one am I ???

I realised something about the MPi blockes last night. All the oil is fed through the filter then to the main gallery and bearings The oil relief valve is at the same point as the oil feed to main bearing number three. Which may be another reason why MPi blocks are a little better. No more crap in the relief valve.

Schrödinger's cat - so which one am I ???

Hmm, wondering if my bearings are goosed as i had to drive a couple of miles with no oil pressure. If i get no oil pressure with the next few tests, i think the engine is going to be pulled.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

oh dear!

I know, surely my engine would show signs of wear tho?

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

It really depends on the cause - just because there was zero pressure doesn't mean there was no oil.

If it's a gallery plug popped, the pump would simply have been pumping at full capacity against a large hole.

But the flow would still have been there and although the "hole" would have been the prefered route for most of the flow, some could have still reached the bearings.

There would be obvious noise changes if the bearings were shagged but, best not to speculate - do the test(s) and then worry.....

Schrödinger's cat - so which one am I ???

Yeah, the engine seemed exactly the same, no noise difference at all, no lack of power, hmm not sure which gauge I'm going to use on the big pipe tho.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

get a reducer that takes to big pipe down to the size of the pipe on you guage. You will most likle have something nocking around your garrage that will do rember, its only a crude test don't go geting anything fancy.

What sort of pressure should i be looking out for?

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

what ever your relief valve is set to mike

I don't have an adjustable one, what's the standard pressure?

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

Non cooper S 65-70 PSI
Cooper S ball bearing and spring 80psi+

Sound!

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

GOT PRESSURE WHOOOPEEE!!

Ok did the gauge on the outlet trick and got pressure. So i plumbed directly from the outlet straight into the block where the filter goes. Fitted the oil gauge and hey presto 60odd psi!

I thinking my problems are occuring somewhere between my oil cooler or my remote oil filter, both of which are higher than the engine. Possible air lock? SO im fitting a bog standard oil filter housing and removing the oil cooler for now.

Cheers Chaps!

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

blocked Oil cooler by the sounds of it well done Mike great news :)

Cheers me old

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

I can't work out what would cause the oil pressure to go sky high in the first place

Team Racing

It could have been the gauge and a coinsidence that it happens at the same time.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

The only way the presure can rocket is if the bulet gets stuck or the gauge fucks up

OK Chaps, just a follow on from my Oil Problems, ive plumbed the hole caboodle back in and fired her up to get 30psi? Bizzare i know, so out of frank curiosoty, i thought id disconnect to the oil feed to the turbo for a few secs to see what was what. And low and behold 60odd psi. So i stuck my hand into the turbo and wiggled the shaft and guess what, shed loads of play in the turbo! Ahh feck the bearings are shot. Looks like that drive home with np pressure manage to screw the turbo up!! So im in two minds to either sort this turbo out or whilst its out go gt or t25?

Opinions?

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

what sort of rpm would the t25 spool up at?

Personall opinion - sort things out one at a time - don't make major changes until you've really understood and cured the first problem.....

Schrödinger's cat - so which one am I ???

The Bearings are deffinately shafted. I know play when i ffel it and there is huge play there mate

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/