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Turbo Oil Seal

gtr_scottie
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gtr_scottie Community Regular

gtr_scottie

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Hi all trying to rule out all other possibilities on why my gtr is blowing bluey grey smoke. At the moment all signs are pointing to the 18 month old hi flowed turbo's. How ever before forking out the $2400 for my 2860-5's i want to check that it could be a simple thing as the pvc valve or blow by valve as some people call it. Where is it located on the rb26 is in on the inlet side of the head connected to the tappet covers and it should be able to be blown through one way only if i am correct ?. I can rule out valve stems seals to a certain extant to the amount of oil in the turbo compressor housing and as valve steams would leak directly into the combustion camber. I will be doing a compression test tomorrow night to make sure it is not excessive blow by as well due to worn piston rings from the previous owner being a moron and driving the car for so long on a run in tune. Any other ideas or checks that people can think to do would be appreciated.

cheers scottie

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tuk32R Contributor

tuk32R

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post-72332-1274010893_thumb.jpg

Hi all trying to rule out all other possibilities on why my gtr is blowing bluey grey smoke. At the moment all signs are pointing to the 18 month old hi flowed turbo's. How ever before forking out the $2400 for my 2860-5's i want to check that it could be a simple thing as the pvc valve or blow by valve as some people call it. Where is it located on the rb26 is in on the inlet side of the head connected to the tappet covers and it should be able to be blown through one way only if i am correct ?. I can rule out valve stems seals to a certain extant to the amount of oil in the turbo compressor housing and as valve steams would leak directly into the combustion camber. I will be doing a compression test tomorrow night to make sure it is not excessive blow by as well due to worn piston rings from the previous owner being a moron and driving the car for so long on a run in tune. Any other ideas or checks that people can think to do would be appreciated.

cheers scottie

yep the pc valve is a one way valve,its located on the inlet side,,,

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  • 5 months later...
gtr_scottie Community Regular

gtr_scottie

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LOL Yeah not good lol, compression was down across the board and ended up being a complete rebuild :) had really bad scoring on 1 and 6 bores coursing massive blow by but it was funny no oil came through the catch can :( . How ever $13 000 later it is being put back together this week by paul at red r racing. I ended up going pretty much all out new turbos, cams, cam gears, extended sump, hks oil pump and new injectors, ross harmonic balancer, new bearnings rings ect. Also got a new clutch because the old one was almost on rivets. So if it dont go hard and put a smile on my face i am gonna burn it lol

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gtr_scottie Community Regular

gtr_scottie

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lol i just found out after pulling the dumps off my old turbo one is completely rooted ey i have never seen a turbo with some much end float and it just started touching on the housing as well luckly i have done everything, I probley could have been fine with a turbo change and it could have lasted awhile longer but what done is done.

$13 000 i think is a pretty bloody good price since crd wanted $9000 for the engine alone if my block was good which it wasnt lol and it didnt come with a extended sump, upgraded valve springs, injectors, turbos, clutch and everything so i am pretty lucky and i had another mob wanted $10 000 for a stock rebuild.

I went for a single plate jim berry clutch the pressure plate has 3500lbs of clamping pressure and the clutch plate has some big ass dampener springs in.

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