1986 extra cab pickup. compression is 145 on each cyl, i replaced the pcv valve to. its not to much blow by but enough to make it leak. i have replaced EVERY gasket and seal on this motor. rear main, oil pan, timing chain cover, cover gaskets, front main, valve cover and half moon things. i dont understand how im getting blow by with 145 psi! im wondering if there is something im missing? ive changed plugs, wires cap and rotor to. i know the turbo probly has bad seals cause it smokes and there is a lil oil in the turbo / intake tube. i have done alot of other work to the truck like turned it into 4x4,sas, elocker rear ect so i dont want to didtch the project. if i have to do rings i will but if any one has had this problem or fixed it some how or even have an idea let me know! thanks.

 

CT-20 = POS.

It's quite common to lose oil seals on them.

My rules for the CT20 are as follows; NEVER spend ANY money on them!

Search for the CT26 (from a 7MGTE) upgrade on the RTE forums.



http://www.turbochargerengineering.c...6&ParentCat=40

 

im not worried about the turbo right now. its the "blow by" im worryed about.
is a ct26 a direct bolt on?

 

My guess is the oil seal is bad in yer Turdblo... So... I would be worried about that.

Mine is leaking. I can take off the supply line and see it pooled in the turbo intake.

 

But will that create pressure In my valve cover?

 

You broke a comression ring or two. 145 does not cut it, needs to be higher.

Now is the time to plan an upgrade to a 7mgte.

 

no. we are talking about a turbo motor not a regular ol 22re my manual says 148 is regular.
any ways im tearing it down for new rings and a head rebuild.

 

no rings broken? rod bearings are a little worn.

 

id check your oil drain galleries in the head, thats how the blow-by gases are supposed to rise up and go through the PCV. if they are clogged or slightly clogged the oil trying to run back down to the pan will go but it wont let the gases rise.

 

I found a great. Deal on a wrecked 97 4runner So I'm just gonna 3.4 swap it. But thanks!