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The mkiv Supra Owners Club

Oil spitting exhaust


Milo500

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Hi guys,

 

I have finished my single from twin supra auto build, and am running 550hp at the crank safely at 23.5psi, at perfect afr with an ecu and tune...the car runs compete perfect and has no flats spots in the map......

 

BUT...when I was infront of a friend in his car, I put the foot down and splattered his windscreen in engine oil that came out of the exhaust, hence it bein red (titan pro s).

 

 

 

I compression tested the engine before the tune and it has 155-158 psi in all 6 cylinders, and the turbo is a brand new t4 88mm turbonetics...so oooo, what could this be guys?

 

 

Cheers in advance on any feedback :)

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This is what I was thinking, my friend said he was fairly certain that it was from the exhaust...the problem is the engine oil is mst define try red aswell haha, so csn't really distinguish...

 

If it's coming out of the breather, will it damage the box? I take it means it is over filled?

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This build did it happen because of the stock twin turbo's going? I'm just wondering if there is loads of old oil in the exhaust that is perhaps only now getting blown out?

 

 

Coolant surely won't last the trip through engine to exhaust!? and spitting oil getting there would be accompanied by blue smoke from burning oil too, no?

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This build did it happen because of the stock twin turbo's going? I'm just wondering if there is loads of old oil in the exhaust that is perhaps only now getting blown out?

 

 

Coolant surely won't last the trip through engine to exhaust!? and spitting oil getting there would be accompanied by blue smoke from burning oil too, no?

 

No it wasn't and the exhaust is brand new when I did the conversion, also I agree with you with the coolant haha, definately eouldn't make it to the end of the exhaust before burning off (and no I am nt using red coolant)

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This also happens when you were sat still and reving it dude! We were stood behind you and got a face full of oil:)

 

It could be the gearbox atf when it hit the windscreen of dave's car, but when you were stood behind it still, was it definately the same oil? Was it just condensation or definately red oil?

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If it's aft it must be flicking down the car's underside, no? So if the underside is as clean as a whistle then I'd be getting a cotton rag close to the tail pipe and reving and examining. If you are still getting a lot I might try and open up a decat pipe join and see if there is loads pooling up. Isn't there talk of needing a turbo oil feed restrictor on some setups. As it's running well does that suggest post engine leak ie turbo seal, tbh I've really no idea, I'm just mixing some common sense with things I've heard/read about.

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It could be the gearbox atf when it hit the windscreen of dave's car, but when you were stood behind it still, was it definately the same oil? Was it just condensation or definately red oil?

 

I would say it was oil Tom! Got a good taste of it, and sure it was the good old Titan pro 10/30 weight:p. Do as mentioned and put a rag over the exhaust then will know for sure! Is strange as you don't seem to be smoking from the exhaust at all! The compression test seems fine! What's the oil level like? Have you been loosing any? Dave said his windscreen was covered in it, so must be chucking out a fare bit

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I would say it was oil Tom! Got a good taste of it, and sure it was the good old Titan pro 10/30 weight:p. Do as mentioned and put a rag over the exhaust then will know for sure! Is strange as you don't seem to be smoking from the exhaust at all! The compression test seems fine! What's the oil level like? Have you been loosing any? Dave said his windscreen was covered in it, so must be chucking out a fare bit

 

Haha sorry hahaha,

I have done the test, and nothing came out at any point through the rev range, hmmm...

 

The oil level is fine and have only been the expected amount to lose from any car over time...

 

Not really sure now haha, I need to check the underside of the car for atf now...the thing I don't know is where is the breather on the gearbox?

 

Cheers

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Haha sorry hahaha,

I have done the test, and nothing came out at any point through the rev range, hmmm...

 

The oil level is fine and have only been the expected amount to lose from any car over time...

 

Not really sure now haha, I need to check the underside of the car for atf now...the thing I don't know is where is the breather on the gearbox?

 

Cheers

 

Did you take the car out for a run and get it up to full temp before doing the test? Can't help on the where the breather is for the auto box I'm afraid

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