User Login    
 + Register
  • Main navigation
Login
Username:

Password:


Lost Password?

Register now!
Fast Search
Slow Search
Google Ad



Browsing this Thread:   1 Anonymous Users





Welch plug replacement- cylinder head.
No life (a.k.a. DattoMaster)
Joined:
2002/6/14 7:24
From Sydney
Group:
Registered Users
Posts: 2598
Offline
Anyone ever ever successfully replaced the welch plug in the rear of the cylinder head, without removing the head? It’s oh so tight with limited space between head and firewall.

I’m keen to hear how you went about it. Worst case scenario, the head will have to come off.

cheers.

Posted on: 2021/3/6 10:29

Edited by benny on 2021/3/6 11:50:17
_________________

-----------------------------------------
1971 B110 Sedan GX Spec
1970 KB110 Coupe Track Car
1970 KB10 Coupe
-----------------------------------------
S13 caliper b...
Transfer the post to other applications Transfer


Re: Welch plug replacement- cylinder head.
Home away from home
Joined:
2004/2/29 11:00
From Sydney , NSW
Group:
Registered Users
Posts: 923
Offline
No good news for you I think Benny .... The old one will be painful to remove as it will most likely be lightly corroded in and the new one is an interference fit which has to be set straight as you can imagine. Head gasket is cheaper than the anger management therapy that will be required otherwise!

Posted on: 2021/3/7 8:19
_________________
All torque, no traction
A division of "My mate's ....." engineering
Transfer the post to other applications Transfer


Re: Welch plug replacement- cylinder head.
No life (a.k.a. DattoMaster)
Joined:
2002/11/26 0:38
From Las Vegas USA
Group:
Registered Users
Posts: 2034
Offline
Only had to do it once; I too pulled the head, I left the intake & exhaust attached.

Posted on: 2021/3/8 4:47
Transfer the post to other applications Transfer


Re: Welch plug replacement- cylinder head.
No life (a.k.a. DattoMaster)
Joined:
2003/3/2 6:16
From Melbourne AUS
Group:
Registered Users
Posts: 3300
Offline
ive done it once but had the gearbox out which made it possible from underneath, still had to swear at it though

Posted on: 2021/3/9 2:43
_________________
1973 B110 A12
Transfer the post to other applications Transfer


Re: Welch plug replacement- cylinder head.
No life (a.k.a. DattoMaster)
Joined:
2002/6/14 7:24
From Sydney
Group:
Registered Users
Posts: 2598
Offline
Thanks for the replies, head came off. Probably best as upon inspection the valve stem seals were severely worn or missing. Good colour in the combustion chamber indicator good burn. Closer look at block under the headers, reveal the other Welch plugs were shot. It would have been a matter of time. Only one left to replace to the 50mm plug behind the flywheel.

Posted on: 2021/3/10 7:44
_________________

-----------------------------------------
1971 B110 Sedan GX Spec
1970 KB110 Coupe Track Car
1970 KB10 Coupe
-----------------------------------------
S13 caliper b...
Transfer the post to other applications Transfer






You can view topic.
You cannot start a new topic.
You cannot reply to posts.
You cannot edit your posts.
You cannot delete your posts.
You cannot add new polls.
You cannot vote in polls.
You cannot attach files to posts.
You cannot post without approval.

[Advanced Search]