Nick's 1991 200q Project - QUAT44RO

[Hank]

Nice work Nick. Way to show those 07k's who is still boss.

Whats the story on the turbo? I can likely save it

Hank

[mushasho]

Yeah, that's Jesse's car... It still has a way to go but not sure why... It's tuned by the same folks that tuned Joshua's 07k/PTE Rabbit and Josh's car stomps all over Jesse's... I'm not sure if Rabbit ECU and Golf R ECU are the same version Motronic, which if not, would explain as to why it Jesse's isn't up to full potential.

And Yes, I have been infected with 07k disease, bad after having these cars local to me...

As for you Nick, how'd you make it home? Was it smoking out the tailpipe all the way home?



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[amd is the best]

Nice work Nick. Way to show those 07k's who is still boss.

Whats the story on the turbo? I can likely save it

Hank

Thanks Hank. The turbo is dumping oil into the compressor, but not heavily it seems. I drove all the way home and it was just starting to get smoky again. Long story short, I ran the shit out of it on Saturday night (several organized races in mexico) and parked the car (not smoking) though the "catch can" overflowed covering my engine bay in oil. Clean up oil and went in for the night. Start it up Sunday morning to head off to the show, no smoke. Start driving and it instantly starts smoking. A lot! I got pulled over and ticketed for excessive smoke, FUCKERS! After the cop leaves I pull off the charge piping to find that there is ounces of oil in them and the intercooler:





Empty it all out and drive off. Slight smoke from what was still left in the charge pipes then clears up! Made it to the show and got second place in my class! Raced my B5 and won on the way back from the show, no smoke, lol. On the drive home, I noticed it smoked the first time on a very long decel. Make it all the way home an now there's a decent amount of oil in the intercooler again (still not as much as the first time).

Can that be repaired Hank?

Yeah, that's Jesse's car... It still has a way to go but not sure why... It's tuned by the same folks that tuned Joshua's 07k/PTE Rabbit and Josh's car stomps all over Jesse's... I'm not sure if Rabbit ECU and Golf R ECU are the same version Motronic, which if not, would explain as to why it Jesse's isn't up to full potential.

And Yes, I have been infected with 07k disease, bad after having these cars local to me...

As for you Nick, how'd you make it home? Was it smoking out the tailpipe all the way home?

From what Jesse told me, the 09+ ME17 ECU does not use a MAF anymore and the ECU is not written for boost at all. The map sensor is only good to a certain amount and I don't recall what that was. He is also limited to 6800rpm. Apparently UM is still working on it and I'm sure there is a lot more in it. I was still happy with the results. This was on pump gas for me too, btw. I had E85 in it the following nights and should have done a re-run.

As for the smoke, see response to Hank.

Pics for fun:

[Hank]

hmmmmm. So the catch can is venting to atmosphere?

Check compression yet on a leak down?

Hank

[amd is the best]

hmmmmm. So the catch can is venting to atmosphere?

Check compression yet on a leak down?

Hank

Yeah, the "catch can" is literally and old hepu g12 coolant jug with a hose ran from the side of the block into it. Ghetto to say the least.

I have only checked compression with a standard compression checker and results were normal.

Despite the budget catch can, how would a bad engine end up with oil in the charge piping/intercooler other than a bad turbo?

[audifreakjim]

It sure sounds like you are getting a lot of blow-by and positive crankcase pressure could cause the turbo to leak. These motors turn into oil pumps at high load and spew an unreal amount of oil out of the breather port. This is why most of us have huge or multiple catch cans. It might be just normal breather activity and your turbo may have a bad seal. A leakdown test on the motor would reveal a ring issue.

[amd is the best]

I've had a large amount of crankcase pressure right from the the beginning of the larger turbo. Not saying that the engine is free and clear of a pcv issue but this seems like something else. Not to mention, am I missing something or how would a high amount of crankcase pressure result in a turbo issue?

[chaloux]

It sure sounds like you are getting a lot of blow-by and positive crankcase pressure could cause the turbo to leak. These motors turn into oil pumps at high load and spew an unreal amount of oil out of the breather port. This is why most of us have huge or multiple catch cans. It might be just normal breather activity and your turbo may have a bad seal. A leakdown test on the motor would reveal a ring issue.

2nd

[vt10vt]

I've had a large amount of crankcase pressure right from the the beginning of the larger turbo. Not saying that the engine is free and clear of a pcv issue but this seems like something else. Not to mention, am I missing something or how would a high amount of crankcase pressure result in a turbo issue?

I had a clogged PCV line before I went to the holset and it pressurized the crank case pushing oil past the turbo seals, maybe that's what Jim is thinking?

Also, badass videos! Super, super bummed I didn't make it. You and Casey appear to have represented the T44 crowd quite well!

[vt10vt]

also, thank you for the new desktop

[WOMBAT]

also, thank you for the new desktop

Ditto!

My car has plenty of blow by too. I should do a leak down and relocate my catch can since it's mounted lower than the breather port...

[EDIGREG]

I've had a large amount of crankcase pressure right from the the beginning of the larger turbo. Not saying that the engine is free and clear of a pcv issue but this seems like something else. Not to mention, am I missing something or how would a high amount of crankcase pressure result in a turbo issue?

pressurized crank case means pressurized oil passages, and GT turbos don't like excessive oil pressure

It *could* be a turbo-only issue but given the age of your motor and the smack-down you lay upon it, I'd say the leak-down is warranted

[amd is the best]

I've had a large amount of crankcase pressure right from the the beginning of the larger turbo. Not saying that the engine is free and clear of a pcv issue but this seems like something else. Not to mention, am I missing something or how would a high amount of crankcase pressure result in a turbo issue?

pressurized crank case means pressurized oil passages, and GT turbos don't like excessive oil pressure

It *could* be a turbo-only issue but given the age of your motor and the smack-down you lay upon it, I'd say the leak-down is warranted

Warranted for sure. I can understand it a bit now, when there's pressure in the crankcase the turbo can't drain properly, or worse yet it's getting forced back into the turbo drain.

Thing also worth mentioning, I did no boost the car even once on the ride home yet by the time I pulled into the driveway it was smoking again. Oil all around the BOV and charge pipes had plenty of oil in them.

[amd is the best]

Couple shots I found:

[85oceanic]

Car looks fantastic Nick! As for blowby, my AAN is pretty bad about it too. I was draining my catch can every 1200 miles or so, given most of what I drained was water.

[WOMBAT]

I drain mine every 10hrs of running or so and it's usually a little bit of water and a lot of coffee looking oil. Well, a lot as in maybe a cup or 2 worth. Depends on how hard I ran it and how twisty the roads were.

[chaloux]

Even when mine had ridiculous blow by it was mostly milky watery shit. Definitely don't drain it back to the pan, gross.

[Mcstiff]

Even when mine had ridiculous blow by it was mostly milky watery shit. Definitely don't drain it back to the pan, gross.

I think that is a product created over time from the mixing of oily crankcase vapor and condensation; draining what oil collects before it mixes with condensation should not be harmful.

[loxxrider]

I disagree. The oil gets emulsified before it ever gets into the can in my experience.

[my2000apb]

I disagree. The oil gets emulsified before it ever gets into the can in my experience.

yeah, keep that gross shit outta my engine

[Hank]

Yes, what Ed and Jim said on the crank case pressure. 95% of the time when people say a turbo has blown the seals, it is usually the "seals" on the pistons that go bang that have gone.

Furthermore, I bet the oil in the intake is what has been giving you ignition fits. If oil gets past the intercooler and into the engine, it fouls plugs almost immediately, or gives nasty misses.

[ringbearer]

Will venting the catch can to atmosphere lower the crankcase pressure at all?
I know it won't fix the problem but may be a helpful (for your turbo) stopgap.
Anyone ever put a pressure gauge on their dipstick tube to monitor pressure?

[Mcstiff]

I disagree. The oil gets emulsified before it ever gets into the can in my experience.

yeah, keep that gross shit outta my engine

Where does this happen? In the tube between the crankcase and can? Not much room or time in there.

Every time the engine and catch can heats or cools condensation forms. When the engine gets hot enough the condensation in the crankcase evaporates and exits via the? Breather! Which leads to the? Catch can! The function of the catch can is to condense hot vapors so it does it's job. Since the catch can is not hot enough to vaporize water (crankcase and catch can condensation) and send it back into the intake or to the atmosphere, the condensed water and oil inevitably emulsify.

[amd is the best]

This amount of oil in the charge pipes is new. Like Sunday morning new. The blow by/catch can issue has been there since 2010.

I do admit that there is a PCV issue here though I really don't think it's the cause to my turbo pumping oil out of it.

As for the ignition issues, def not oil related as this just came about Sunday morning and the ignition issues have since been resolved. Though now misfiring again and now I can agree that it's probably oil.

Hank, can this turbo be saved? Only reason I care is so that I can sell it to fund what's next. Or are you interested in it for partial trade for some treats? Lol

[Hank]

Yeah, if the turbo is still spinning, making boost, it is probably savable. If you have some down time planned for the car, you should send out the CHRA. I can send a loaner CHRA if you can't have downtime too for a very minimal cost.

Hank