Pts Baffle Experience

[mmt 15]

Hi

strange problem I guess.

 

mi16 engine with the pts eggbox type baffle.

 

Under 4000 rpm everything is fine. As soon I rev it above 4000 rpm(standing still on the ground) oil pressure drops to 0 psi. The more rpm the lower pressure.

 

Took it apart and it seems like the engine spacer between the bottom end and the sump stops the oil from going back into the sump. The spacers two "bars" going across seems to go across right under 2 out of 4 oval oil return holes.

 

Has anybody expirenced this problem?

 

Could I just drill some holes in th baffle(windage tray part of the baffle)? Am I missing something?

 

Thanks

[brumster 135 1 Cars]

Not sure this is baffle-related, by spacer you mean the alloy sump spacer on all 1.9's with the two re-enforcing ribs across it? Run that myself on an mi16 and not had any problems; not sure what return holes they block? You don't mean the L-shaped washer/spacer between the pump and the block?

 

I'd look more at the pump myself, pressure spring problem or it's sticking - worth taking it apart and checking. Certainly if it's not an electrical problem and your pressure gauge is to be believed, I'd stop revving it above 4k pronto !!

[mmt 15]

Yes I mean the "alloy sump spacer on all 1.9's with the two re-enforcing ribs across it"

 

The two ribs is going across just above the oval holes in the baffle(on the back side of the engine). The oval holes must be return holes for the oil going back in the sump. I suspect that the ribs is stopping the oil from going back into the sump fast enough. The pump empties the sump faster than the oil can return?

 

"I'd stop revving it above 4k pronto !!"......well I did not stop the revving in time...spun the shells!

 

Where else should I look for gremlings?

[brumster 135 1 Cars]

Oh dear

 

All I can say is I've not had a problem with my PTS baffle and I doubt it's the baffle itself causing the issue; there might be a general oil flow problem you have but I'd look at other culprits first... maybe a return from the head is poor, so it's holding a lot in the head, but even then the main return hose at the top would start returning oil to the sump if it was chronicly bad.

[Daz_C 8 1 Cars]

I have a PTS baffle in mine too and like Brumster have had no issues.

Might be an idea to borrow/buy a more reliable oil pressure gauge and plumbing that in to be certain its not just a gauge/electrical issue.

Have you checked the wiring and gauge ? I remember a similar issue years ago and it was a loose spade connector on the oil pressure sender.

[Tom Fenton 1,542]

I would also doubt it is the baffle, I would look carefully at the suction side of the pump- the pump cannot deliver what it cannot suck in.

[hexhamstu 9]

When the pressure gauge drops to zero does the stop light come on?

[large 33]

How are you reading the pressure? Mech guage or the std one.

[brumster 135 1 Cars]

I think it's safe to say if he's spun the shells in it then the gauge was correct in saying 0 oil pressure

[mmt 15]

I think it's safe to say if he's spun the shells in it then the gauge was correct in saying 0 oil pressure

 

 

I agree

 

I´m using the std gauge but has an extra warning light that comes on at 20 psi.

 

I think that the pump is emptying the sump too quick as under 4000 rpm everything is ok. It is only above 4000 rpm the pressure starts to drop...therefore I figured that return might not befast enough?

 

What kind of cog do you guys use together with the oil pump?

 

I use the car for track only.

 

Can you get yours to keep the pressure without the "Peter T" oil pump extention and with the std pump cog together with the pts baffle?

 

Are any of you using yours on track and if so what kind of setup together with the pts baffle are you using?

Edited April 25, 2010 by mmt

[large 33]

I think it's safe to say if he's spun the shells in it then the gauge was correct in saying 0 oil pressure

 

Will read all the posts next time.

[mmt 15]

Anyone with an mi16 on pts baffle for track use.

 

What kind of setup, apart from the pts baffle?

 

"Peter T" oil pump extention?

 

Larger oil pump cog?

 

What is your setup?

[Baz 421]

This has been asked a few times previously with not much of an answer, as i'd really like to know how well theb PTS baffle fares with the extended pickup etc too!

Edited April 25, 2010 by Baz

[mmt 15]

What kind of setup are you running Baz? AND is it working?

[Baz 421]

Erm, an 8v. That has a PTS baffle though and seems to work very well.

 

I also use a friends Mi with PTS Baffle and again, that seems very well despite seemingly only having a 4bar relief spring in it.

 

Otherwise previously i've never run anything more than a trap door/GTi6 sump on any of my previous Mi-engined cars, and never had a problem, only the couple of Mi's i have now and want to use in anger, owe me a bit more than just chancing it...

[brumster 135 1 Cars]

I'm just a standard tin sump and pump, with PTS baffle, on an S16 and previously on a 1.9 mi16 too - nothing overly fancy on either, just an uprated pressure relief spring and that's all. The car is a tarmac spec stage rally car on moulded slick tyres (ie. fairly grippy, I would suspect) and I certainly don't give it an easy time

[Baz 421]

I'm just a standard tin sump and pump, with PTS baffle, on an S16 and previously on a 1.9 mi16 too - nothing overly fancy on either, just an uprated pressure relief spring and that's all. The car is a tarmac spec stage rally car on moulded slick tyres (ie. fairly grippy, I would suspect) and I certainly don't give it an easy time

 

Adding the other side to the 'myth'.

[mmt 15]

So the proved Mi16 setup is:

 

PTS baffle, 6 bar spring and nothing else!?

 

Brumster, how much oil is in your sump?