633 replies to this topic

[Rockoz]

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

[76lxhatch]

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

[Shiney005]

What brand were they?

[76lxhatch]

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.

[Shiney005]

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.

[FLY_LX]

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

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

[76lxhatch]

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

Ah, that explains it...

[76lxhatch]

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.

 

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).

 

New seals, that was easy.

 

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.

 

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

[SmacT]

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!