Wastegate removal '81 Turbo

[PhilW]

Hi,  I have a suspect stuck wastegate.  Access to the 2 nuts is limited.  Does anyone have any suggestions on removing the unit with out stripping the exhaust system?  Man thanks for any advice.

[pete]

@Sparky has done a few

[Sparky]

Ummmm, I just undo the nuts!  Reasonable access with the right tools.  Only an issue if corrosion is really bad.

[CarBuff]

When we removed the turbo from our '88, we had to cut a box wrench and WELD the two ends at 90 degrees to allow enough room to swing it. 😮

[910Esprit]

You could also check by removing the lower aluminium casting and not disturb the attachment to the adapter manifold

[PhilW]

Thanks Steve

I did consider that yesterday.  Maybe ill do that when I go back to it.  Thanks

 

13 hours ago, Sparky said:

Ummmm, I just undo the nuts!  Reasonable access with the right tools.  Only an issue if corrosion is really bad.

Thanks Sparky.  I feel like a bit of a twonk now as it is only two nuts.  It was just my initial look and putting spanners on the nuts immediately told me this was going to be a PITA.

[JimmytheTurbo]

@PhilW are you trying to remove the whole unit?

I am about to do this due to same issue.

I think you can undo the 4 bolts that hold the bottom half of the assy leaving the iron part where it is.

I believe this gives you access to the spring diaphragm and valve.

 

 

Edited November 19, 2023 by JimmytheTurbo

[PhilW]

Well, took the four bolts out today.  1 sheared so was a bit of a pain but now out ok.  Diaphragm is absolutely fine.  Valve was stiff.  Freed up with WD40 very easily.  Will clean up some more and really ensure its totally free moving.  Ordered 4 new bolts and will reassemble.  Just conscious in my view the job is not complete as have not removed it completely. Will put that on the job list for the future.  What is important it will be now safe to drive from an overboost point of view.

One question is what sort of sealant is used on the joints during reassembly.  Something had been used previously.  Assuming it was done correctly, and should the shaft have any typr of lubricant applied that will tolerate the heat?

 

Thanks

[GavinT]

[snowrx]

That's what I used on mine, until it went to live in the attic.

[jonwat]

16 hours ago, snowrx said:

That's what I used on mine, until it went to live in the attic.

How on earth did you get your car up in the attic? 

[PhilW]

Thanks Gavin.  I will find something similar over here.

[JimmytheTurbo]

Phil I got the above from a local motor factors I think. You can borrow mine if your in Norwich anytime soon.

[PhilW]

Thanks Jimmy.  I may take you up on that as only need a smear.  Not sure when Ill next be up that way but also very busy at the moment too with work so progress will be slow, as always

[JimmytheTurbo]

Sure thing but If you need a dollop :-)

[jonwat]

59 minutes ago, JimmytheTurbo said:

Sure thing but If you need a dollop 🙂

Stick some in a dollop sized bag & post it to him 

[910Esprit]

I had a look on Permatex's website and the MSDS and none of the example usages are for moving or sliding parts.  Its specified as an anti-seize compound for static parts such as nuts, studs exhausts etc.  Having said that, the main ingredient is graphite, so I guess it will be OK 

[JimmytheTurbo]

@910Esprit Yes Im doing same job on my waste gate and I dont remember using anything on it last time.

I think I used the Permatex on my exhaust manifold nuts.

[JimmytheTurbo]

Got mine apart last night.

There was a bit of loose corrosion from the iron body and my diaphragm gasket had broken down.

Valve does feel a bit like it could do with some lubrication although Im not sure even the would last in there too long. Still nothing to lose.

[JimmytheTurbo]

SJ service seems good. I ordered the 2 gaskets yesterday and they arrived today!

 

[JimmytheTurbo]

Laid under the car last night and got this back together.

I did use a drop of the Permatex grease on the shaft as it felt a bit rough with out it. How long it will hold up time will only tell.

I will have to give it a go and see how it works.