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Turbos Keep Seizing Rb26 Block Return Lines ?

Hot33r8723

By Hot33r8723,
in Engines & Forced Induction

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WMDC35 Experienced

WMDC35

Posted
Posted

Not sludgy at all motor is fine the turbo line is blocked

so you're saying it is blocked? seen a few cars with turbo oil starvation problems, usually blocked lines/filters if it has them, it's getting oil in the exhaust after it seizes you mean?

Hot33r8723 Rising Star

Hot33r8723

Posted
  • Author
Posted

Yeah I mean was running fine then the rear turbos exhaust wheel blew cos of shaft play it was hitting the inside of the turbo housing so I changed the turbo now it's make only 7 psi instea of 14 when I start it up only the front turbo spins freely at idle the rear one is hard to turn

WMDC35 Experienced

WMDC35

Posted
Posted

the oil starvation will flog the turbo so the wheel will come into contact with the housing, if you disconnect the oil feed off the rear turbo and start it up you'll prob see no oil come out or the odd drop, you'll have to pull it apart and check and clean everything

hypergear Grand Master

hypergear

Posted
Posted

If oil feedline blocks then it will seize while drain blocks will cause turbo to leak oil from all seals. It looks like the feed is blocked. Check the line and drill out the oil restrictor in its fittings.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

wont be oil drain, its 4x the size of the feed.

feed will be blocked, meaning there is gunk elsewhere in the system most of the time... cause if there wasn't - how can it be blocked?

Hot33r8723 Rising Star

Hot33r8723

Posted
  • Author
Posted

No I've got it all worked out if the turbo was seizing it wouldn't make boost its only making 0.6 bar so I'd say it's leaking somewhere one of the pipes meant to be 1 bar And now it's smoking like a bitch on boost I compression tested it and my results where this 50 55 75 100 100 125

Hadouken Grand Master

Hadouken

Posted
Posted

Im sorry Ash, I've tried to stay out of this thread.

Your compression is wwwwwaaaaaayyyyyy f**ked.

Your motor has most likely sucked 1 of the 3 turbo's you have gone through.

You say you have it all figured out? I dont think you do. You need to go and buy another motor from the wreckers, this time you need to

  • Make sure you have a good fuel pump
  • Make sure you have working turbo's
  • Make sure you compression test the motor prior to dropping it in
  • Go and get a tune (for the love of god)
  • Don't come on here and ask for advice then turn around and say NO I have it all worked out. (very frustrating when you offer advice and it gets thrown in your face!)

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

No I've got it all worked out if the turbo was seizing it wouldn't make boost its only making 0.6 bar so I'd say it's leaking somewhere one of the pipes meant to be 1 bar And now it's smoking like a bitch on boost I compression tested it and my results where this 50 55 75 100 100 125

So you had the same problem back in July? Or is this a new compression problem?

http://www.skylinesaustralia.com/forums/topic/404483-rb26-melting-pistons/

If it's a NEW compression problem i would suggest

1. Getting a better tune

2. Learning how to drive

3. Selling the car all together

XKLABA Grand Master

XKLABA

Posted
Posted

now it's smoking like a bitch on boost I compression tested it and my results where this 50 55 75 100 100 125

after reading some of your posts I have to ask, how exactly did you go about doing the comp test ?

you say the rear turbo is the one that keeps blowing but the front 3 cylinders have the lower comp

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