supra smoking after boosting

[peste noire]

hey whats up you guys.

well my block just got rebiuld (barely have like 100 miles on it) head was used off another car and i have hks 1.2 mhg, arp's, intercooler,3 inch exhaust from turbo back and a 60-1 turbo so i was wondering how can i tell if its my turbo thats smoking?


it doesnt do it at idle, only when im driving and i tend to slow down on a gear instead of nuetral (to give it some load) and when ,i get to the light or a couple feet before i do, i see a small cloud of smoke.

do you guys think i need a catch can already or the seals on turbo?


any help would be greatly appreciated.

 

[MINA]

Am think turbo seals
what kind of turbo
mods??

 

[peste noire]

Mods are listed above but here they are any ways.

3 inch exhaust from turbo back,intercooler kit,60-1 turbo.
That's it for mods besides hks mhg and arp's.

 

[tomsupra8683]

I had that issue and i fixed it buy venting the crank case to atmosphere instead of thru the throttlebody.

 

[peste noire]

The only thing I see that comes from the crank case goes to the valve cover.

 

[nofx230]

a small piece of mind if your block was machined when it was rebuilt iv always been told to run a know working not highly valued to one self turbo as durning the machining process metal shavings get hide out even after thoroughly cleaning the block and once oil is ran through the motor shavings could end up in the turbo damaging seals and bearings/bushings not saying this is the case just throwing out another scenario did you put new valve seals in the head those like to leak at high rpms at times

 

[peste noire]

The head was used.
Don't know if they were ever changed.
And I don't go past 3500 rpms cause block is still settling in.

 

[nofx230]

how many miles on the turbo and did you buy it from ebay or a decent company

 

[supraguy@aol]

Did you load the engine while breaking it in?
You should have run it up to decent rpm and load, then decelerated in gear to put it under vacuum pressure,
about a dozen times, and used a straight weight oil, to avoid the extra additives. This is to seat the rings.

 

[Dani87x]

Did you load the engine while breaking it in?
You should have run it up to decent rpm and load, then decelerated in gear to put it under vacuum pressure,
about a dozen times, and used a straight weight oil, to avoid the extra additives. This is to seat the rings.

I concur.

 

[Turbo Habanero]

I do have this same exact problem and it has been doing it for awhile now. I have basically the same mods.

I've replaced my turbo and valve seals I have good compression 165+ in all cylinders.

Still have this issue but no knock and car runs great no real significance in oil loss between changes and i run the shit out of my car.

I wanna say it needs to be tuned.

A lot of people seem to have this same issue.

 

[peste noire]

well i barely have 100 (100 miles, not 100 k miles) miles on the block and yes i did put straight grade oil in it and yes i did decelated in a gear to put some back pressure on the ring.
im still doing it once in a while.lol


ahh sucks man.

im gonna try to get a catch can see if it helps then goes my turbo cause i did buy it used off and ebay user more then like 2 years ago.

 

[nofx230]

in my bikes and quads iv always broke a motor in like i was going to ride it a lot of people have diff theories on how and what is the proper way to seat rings is but the method iv been taught and using seems to work very well i highly doubt its your rings id lean towards the turbo seals catch can wouldn't hurt either

 

[peste noire]

so how can i check to see if its my turbo with out replacing it?

 

[Turbo Habanero]

You can check rear seal by taking off the back elbow and looking for oil