1150 - cylinder/exhaust studs or bolts?

ralphy · May 12, 2021

Having finally extracted the remaining studs from my cylinders:

https://www.ukgser.com/forums/showthread.php/551825-Manifold-stud-removal-what-else-can-be-done/page2

It's made me wonder whether to fit replacement studs & nuts, or would fitting bolts be a better option??? :nenau

Also...

Having taken the cylinder off I was presented with this:

So I cleaned it up:

But would it be necessary to take the other cylinder off to clean it up or would leaving it alone have some negative effect with one clean cylinder and the other one dirty??? :nenau

Thoughts on both q's please.

R

theoneandonly · May 12, 2021

I've got bolts ,i check 'em every service.

West coast gser · May 12, 2021

Use brass nuts and spring washers .. :thumb2

golfy1 · May 13, 2021

Where my studs were OK, I used M8 stainless steel spring washers and Acorn (dome) nuts. Parts numbers 91300 and 48472 from Toolstation. The dome nuts make it more aerodynamic so faster dontyaknow.......... Also the dome nut can be used to set the tension on the alternator belt
They also do M8 stainless threaded stud (62545) if you want to make a "custom" length (damhik ! )

Cook1e · May 13, 2021

Stainless studs, brass nuts and Castrol Optimol Paste TA

ralphy · May 13, 2021

I like the idea of brass dome nuts and ss sping washers.

Cook1e said:
Stainless studs, brass nuts and Castrol Optimol Paste TA

That Castrol Optimol Paste TA is a great product for this application, good job I'd got a tube from years ago as it seems tricky to source it nowadays.

R

Cook1e · May 13, 2021

ralphy said:
I like the idea of brass dome nuts and ss sping washers.

That Castrol Optimol Paste TA is a great product for this application, good job I'd got a tube from years ago as it seems tricky to source it nowadays.

R

The name seems to have been changed and I can't find a UK supplier of a single 100g tube (in the 2 minutes I spent on Google)
https://www.ebay.co.uk/itm/222914290098

ralphy · May 13, 2021

Cook1e said:
The name seems to have been changed and I can't find a UK supplier of a single 100g tube (in the 2 minutes I spent on Google)
https://www.ebay.co.uk/itm/222914290098

I've just been ordering some stuff from Motobins and by chance I found this:

R

Cook1e · May 13, 2021

Got half of the tube I bought many years ago (for spline lube when I did the clutch, I think). I started using it on exhaust studs/nuts when I discovered that Copaslip was no good for that job. Drilling studs out was no fun!

AdrianS · May 19, 2021

Did you just clean the inside of the head up or did you remove the valves and lap them in? I would put the plug back in and fill the head with paraffin and see if you have any valve leakage. If so, then lap the valves in. If all sound, you could probably assume the other side is ok so it’s up to you if you pull the other head and clean it up. If you have got a bit of valve leakage, then it would be worth pulling the other head off.

ralphy · May 22, 2021

AdrianS said:
Did you just clean the inside of the head up or did you remove the valves and lap them in? I would put the plug back in and fill the head with paraffin and see if you have any valve leakage. If so, then lap the valves in. If all sound, you could probably assume the other side is ok so it’s up to you if you pull the other head and clean it up. If you have got a bit of valve leakage, then it would be worth pulling the other head off.

It hadn't occured to me to do that. :blast

But as the exhaust is not yet bolted on (I decided to paint the pipes black) it's not too late.

Thanks.

R

1150 - cylinder/exhaust studs or bolts?

ralphy

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theoneandonly

looking over the edge

West coast gser

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golfy1

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Cook1e

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ralphy

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Cook1e

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ralphy

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Cook1e

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AdrianS

Well-known member

ralphy

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