Turbo spin at idle - resistance

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Turbo spin at idle - resistance

Postby Vertigo » Thu Jan 04, 2018 8:46 am

Hi guys. Just recently rebuilt my turbo (TD05HR), and now its not spinning at idle. I can spin it by hand, but any tiny amount of sideways pressure on the shaft makes it bind up.

I tightened the shaft nut to 80 in-lbs, which was in the lower end of the 75-100 in-lbs spec stated online.

Have I $&#$% up? Or does it just need to wear in?
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Re: Turbo spin at idle - resistance

Postby Mr Ree » Fri Jan 05, 2018 8:37 pm

My JB China special that I bought a decade ago, didnt spin at idle when it was a fresh install, but for the past few years, it has spun at idle, and for quite a while upon shut down. I imagine yours just needs a few kms on it before it does the same :)
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Re: Turbo spin at idle - resistance

Postby RS13 » Sun Jan 07, 2018 12:36 am

Perfectly normal for a fresh turbo. If you can still spin it by hand and it isn't obviously rubbing on either housing then I wouldn't worry.
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Re: Turbo spin at idle - resistance

Postby Vertigo » Sun Jan 07, 2018 9:32 am

Thanks guys, that makes me feel a lot better. Ill warm it up, and if all looks good, take it for a drive.
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Re: Turbo spin at idle - resistance

Postby MAGN1T » Sun Jan 07, 2018 10:54 am

Do turbos spin at idle?
Everyone seems to think they do?


Had another big discussion with the usual ricers wayyyy back.


Try asking on an American forum.
No of course they don't, it all depends on the idle speed.
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Re: Turbo spin at idle - resistance

Postby Vertigo » Sun Jan 07, 2018 1:23 pm

Well, the same turbo did on my engine before the rebuild. TD05HR on 4AGE.
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Re: Turbo spin at idle - resistance

Postby RS13 » Sun Jan 07, 2018 3:56 pm

How did the drive go?
Daily driver: Toyota RunX/Toyota Caldina
Ex: 2x AE101, 5x KP60, KP61, EP71, 3x KE70, KE72, AE70, AE82, 2x TE71, AE90, AE92, ST170, plus 11 Hondas, 12 Nissans, 6 Fords, 4 Mazdas, 3 Mitsis, an Isuzu and a Lada!

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Re: Turbo spin at idle - resistance

Postby MrOizo » Sat Jan 13, 2018 7:16 pm

I had a issue like this which resulted in a piston seal needing replaced.
There was a tiny bit of rust on the seal and that was enough to have the shaft bind up when at operating oil pressure.

I asked how to avoid this and was told to avoid rust enhancing conditions - moisture free environment. Is that even possible especially in this 85-95% humidity? :P This is why ii run my car every few weeks - dont like the thought of removing the turbo again!
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Re: Turbo spin at idle - resistance

Postby Vertigo » Tue Jan 16, 2018 5:56 pm

Haven't driven yet due to camping trips and such, but will update after fixing another issue somewhat unrelated.
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Re: Turbo spin at idle - resistance

Postby Vertigo » Sun Jan 21, 2018 5:33 pm

Drive successful, boosts just fine. Will do a few test drives, and then check the idle spin. But Im not worried now.
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Re: Turbo spin at idle - resistance

Postby Vertigo » Tue Mar 06, 2018 8:07 pm

Many drives later, there have been zero problems. Its still very resistant to turn with sideways pressure, but I am confident to call it normal.
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