Exhaust manifold stud

[Toledo Man]

Does anybody know the thread size on these? Becky II has lost one of her's. I'd rather buy a new one than rob one of Becky's. I know that the nuts are 14mm AF. Where's the Guru when you need him?

[Richie117]

I have just scanned all of my Acclaim Workshop Manuals and I am saddened to realise that thread sizes are not mentioned. I assume there is not enough room for everything. When I start restoring my Avon Acclaim, I can see that a purchase of a thread gauge set will need to be made. I have just also had a look on the Lings website at the 1982 civic. See the following link:

http://www.hondaoriginalparts.com/honda_car_parts_selection_pfk.php?block_01=18SA801&block_02=E__0303&block_03=10242

This refers to the manifold nut as 8mm as opposed to the aforementioned 14mm. Perhaps the Guru could shed some light on this?

Rich

[Richie117]

After having another look at the Lings website I have noticed that the studs are still available. They are under the cylinder head section. 8mm though.

http://www.hondaoriginalparts.com/honda_car_parts_selection_pfk.php?block_01=18SA801&block_02=E__1000&block_03=10242

Rich

[Toledo Man]

It is the manifold-to-downpipe stud that I'm after. I was hoping somebody would know the actual thread size. 14mm is the distance across the flats for the nut so the thread size has to be less.

Sorry for any confusion :B

[Barry Acclaim Guru]

Ah, 10x 1.5mm. if the thread on the manifold is shot then you will need to helicoil it. fit any then that matches. Thread depth is about 15mm.
B

[Toledo Man]

Thanks for those wise words. See you tomorrow at the P&P meeting.