cheetah chrome

I think the housing w/ the gunk in the thermostat bore is one of his spare housings that he pulled a different T stat from. The housing that was on the car while it was exhibiting the oil pressure issues is still mounted to the block...I maybe wrong though. Great thread, I was reading up on oil pressure issues not to long ago and it seems like lots of threads were missing closure...this one is being documented well.

Josh B

Yep - you are right - that is a spare housing.

I was finding the same thing - lots of folks talking about oil pressure issues but not many resolutions....

Hopefully this will solve some headache for someone else. Sucks as it is raining here in Atlanta today so I drove the Honda to work and won't know if the turbo is fixed till later in the week.

xsboost90

so you did torque the crank bolt down? If its loose at all it'll let the oil pump sleeve slip and drop oil pressure....

Josh B

Yup - cranked it down to spec.

Got that head today btw - taking it to the machine shop tomorrow. Now I just gotta negotiate a car to go under it

cruise98

220 degrees is not too high, but losing pressure when the oil t-stat opens is curious to me. Check the line connections and be sure the oil cooler is connected correctly. You want the out (supply to engine) from the cooler to be at the lowest fitting. I forget which one is IN on the console, but you can figure that out by looking at the spare or a stock setup.

Josh B

Hey Keith - if I understand how it all works the car doesn't divert any oil to the cooler until the thermostat opens at 105 degrees C or about 221 degrees F.

What I am thinking was wrong with my car is the thermostat was defective as the plunger is stuck in the out position. The car was always diverting oil to the cooler. My theory is that at higher temps the plunger was extending even more and causing the thermostat to rise even a tad higher which was cutting off the oil supply for the oil cooler and the filter both.

I'll be able to drive the car to work tomorrow - got my fingers crossed.

ilikemy944

Shoulda driven today! 65 and sunny!

INURGRL951

so josh b hows are things coming on that oil pressure issue?


costas

Josh B

Costas man - hoping it is fixed. We'll see the next time I drive her.

Is that your Cayenne in the pic in your avatar?

Josh B

Well - drove the 951 into work this morning and she seems to be all better so far. Oil pressure was always at 65 psi or higher once I was past 2 to 2.5k rpms. I think I'll get onto the boost a little more on the way home and see what happens.

Running without my AFR gauge as I am going from an innovate to a zeitronix and I feel a little blind driving the car without knowing what my air to fuel ratio is

If all is well I think I'll pop the electrial sender back in the car and either get the fittings to tie the mechanical gauge back in or put in on the shelf for now.

Now I gotta get that screw out of the rear tire, swap on new intake gaskets, fix the pwr steering line that is leaking and get the front end aligned after taking it apart for the oil pan job

ilikemy944

Cool

Josh B

Hey Brad - we got in that green m3 and are going to be parting it tomorrow if you wanted to come by....

aribop

Hint, hint...bring your tools

ilikemy944

Hah - I will try.

Interview today!

aribop

Good Luck!