Cylinder head stud

[Dougie212]

Hi there

Bit random I know, but does any one happen to have a short Cylinder Head stud, washer and nut available please? The previous owner of my minor decided to try and make do with an ill fitting bolt type thing as a replacement.

Thanks

Duncan

[philthehill]

Cylinder head stud, washer and nut are readily available from ESM
https://www.morrisminorspares.com/engin ... 56-p830294

Be aware that 11 stud heads use a bolt for the front of the head which has a torque of 25lb ft.

[Dougie212]

Hi Phil..

Thanks for your reply.. I’ve attached a pic - I assume the bolt thats in there at the minute isn’t as standard is it..??? I assumed not as it doesn’t tighten. I’m happy it’s not broken off in the head it just won’t tighten up.

Thanks

[philthehill]

Thank you for the photo.
The stud/bolt is not standard. The stud should look like all the rest.
It looks as if it might be a late BL rocker cover nut with the air cleaner spigot extension.
If it will not tighten then it must either:-
Completely the wrong fitment which it is.
Threads stripped in the block.
Threads stripped in/on the stud/bolt.
The stud/bolt is not long enough.
The original stud has broken off part way down the head stud hole.
You are going to have to remove the stud/bolt to determine the next move.
You may even have to remove the head to get access to the bottom of the stud and the stud threads in the block.
Even if the threads in the block are stripped they can be repaired with a Helicoil type thread insert.
I would suggest that you remove the stud/bolt and report back on here as to what you found. Advice will then be given on the evidence found.
Phil

[Dougie212]

Will do, thanks Phil.

My gut is saying it’s just an ill fitting bolt. I’m quietly confident having looked and looked and looked again over the engine that there’s nothing broken off and left in the block. I’ll get another stud and nut, take that one off and see how I get on. Thank you!!

[philthehill]

Until you remove the offending stud/bolt and examine the stud/bolt and what remains are found in the stud hole you will not know for sure what the problem is.

[philthehill]

Looking again at your photo above you have a real mishmash of cylinder head studs fitted.
You have not only the incorrect stud/bolt you also have some 'A' Plus cylinder head studs and what appears to be a cut stud.
I would suggest that you remove the head and fit a set of correct cylinder head studs with the correct nuts
The 'A' Plus studs with the flanged nuts are the best bet and can be torqued to 50 lbf ft.
If you do not resolve the stud problem you are at increased risk of having a cylinder head gasket fail or even worse.
https://www.minispares.com/product/Clas ... o%20search