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#626 Rockoz

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Posted 17 September 2024 - 08:41 AM

Saw something like that once many years ago.

Was caused by heads being shaved and the manifold not be shaved to match the new face location.

 

Cheers

 

Rob



#627 76lxhatch

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Posted 17 September 2024 - 05:01 PM

Layer on the head side stayed largely in place, but still didn't bond to the surface at all.

20240917_164637.jpg



#628 Shiney005

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Posted 17 September 2024 - 06:25 PM

What brand were they?



#629 76lxhatch

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Posted 17 September 2024 - 06:33 PM

What brand were they?


"Tong Hong" - yes they are cheap and nasty (well, not that cheap) but hard to find anything else in stock these days. What could go wrong, eh? To be honest I think the material would probably be OK in an application where it isn't exposed to oil.



#630 Shiney005

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Posted 18 September 2024 - 10:35 AM

Fel Pro and Permaseal still make them for Holden V8. I have always used the better brands as I had a leaky set waaay back in the late 1980's. My hatch was running a bit weird and I couldn't find the problem until I sprayed some Aerostart along the sides of the manifold and the idle revs increased.



#631 FLY_LX

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Posted 18 September 2024 - 05:26 PM

I had Tong Hong noodles the other night. :blink2: :badabing: (sorry)

Edited by FLY_LX, 18 September 2024 - 05:30 PM.


#632 76lxhatch

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Posted 18 September 2024 - 05:43 PM

I had Tong Hong noodles the other night. :blink2: :badabing: (sorry)


Ah, that explains it...



#633 76lxhatch

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Posted 06 October 2024 - 12:38 PM

Brake master cylinder was weeping out the rear seal again. Feels like I only just rebuilt it, but turns out that was 10 years and over 100,000kms ago.

 

I wanted to keep the master cylinder with stainless sleeve and custom stepped bore, although I'm starting to wonder if I should have just spent the time and money on updating to something more modern. Anyway getting seals was a bit of a pain last time, this time I couldn't find the right primary seal for the larger 1-1/8" piston. I did find a different seal with a slightly smaller internal diameter that would work with a different piston... here's one. 6061 main body with stainless sleeve pressed on the end where the retainer goes, copying the original because it seemed like a good idea.

20241001_175545.jpg

 

Also made up some pieces to sandwich the shim material to machine a new one in the right diameter to a tidy finish (plus a spare just in case).

20240927_183834.jpg

20240927_191815.jpg

 

New seals, that was easy.

20241001_193629.jpg

 

I'd already sleeved the old pushrod (at top of photo) to improve the seal where it was undersized and marked up by vice grips or some such. Decided I may as well make a nice new one. It's a bit shorter which allowed some margin for error with machining the new piston - would have been a throwaway if the threaded hole inside had broken through to the pushrod hole.

20240928_125034.jpg

 

As soon as I got all that together and took it for a test drive, the starter motor solenoid decided to stick on. The Odyssey battery kept it cranking flat out while I ran around trying to disconnect it, letting ALL the smoke out - thought I was going to need the fire extinguisher! Confirmed that it was actually the starter at fault after second-guessing my wiring and the ECU, replaced with another one I had earmarked for a different project. 2.2kW and gear reduction :)



#634 SmacT

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Posted 07 October 2024 - 08:37 PM

Nice lathe work as usual. Scary stuff, on the starter - smoke is never good, unless it's from the rear rubber. Glad you sorted it!




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