TT John's copper rocker gaskets

[Minto]

Superb improvement, so far after 100 ish miles, only a tiny drip from a rear corner which seems to have stopped since retightening the nut on that corner. The Clingersill gasket previously used disintegrated after very little use.
As a massive bonus, these make getting the rocker box on and rocker cups sited over the push rods a breeze.
Now to find a way of stopping the primary drive case oil falling out. Lol.
Well worth 18 quid of anyone's money.
Cheers
Jase

[Chris A10]

Any links  for  us from Holland  ?

Cheers Chris

[Greybeard]

Any links  for  us from Holland  ?

Cheers Chris

https://www.a7a10.net/forum/index.php?topic=14868.0

I suggest you send a message to TT John

[ellis]

TT John's rocker box copper gaskets are a savior to us BSA users. Fitted them to my A10 and not a drop of oil to be seen.
Well done John an excellent product.

ELLIS

[ciderman]

ive just bought  klingersil gaskets for my A10 - and not sure if i will fit them now  following Mintos comments  ! Has anyone else used  these with poor results ?

[Minto]

Ciderman, the only one I had issues with was the rocker box gasket, the rest were fine. I think the rocker box is prone to movement and vibration so mine just dropped to bits in no time and leaked like a leaky thing.
All the other Clingersill gaskets I have managed to clean up and reuse on this latest rebuild.
Definitely recommend the copper gaskets for rocker box though.

[Colsbeeza]

TT and Cu gasket users,
Can I presume that at the low temperatures of the rocker box that the copper will not harden or need annealing between fittings like a head gasket does?
Col

[berger]

col it doesn't matter what the temperature is or has been, once it's been disturbed it needs  a coat of looking at on the gas job... i have been to the pub, just thought i would let you know

[Rex]

Yep, I agree, never ever (re)fit a copper gasket without annealing first.

[Colsbeeza]

Ta Berger & Rex,
I did some research and have learnt the same.
Col

[Minto]

Aye, apparently it gets work hardened by tightening it down too, so annealing is necessary.

[Greybeard]

Does a copper gasket get thinner and thinner over time?

[RichardL]

Yep, I agree, never ever (re)fit a copper gasket without annealing first.

Like this:

[Rex]

A small gas torch will do the job, as will a domestic gas stove. Heating to cherry red all over is the optimum, but it's just as effective "chasing the red bit" on the mrs' kitchen stove.

[Greybeard]

A small gas torch will do the job, as will a domestic gas stove. Heating to cherry red all over is the optimum, but it's just as effective "chasing the red bit" on the mrs' kitchen stove.

I place the gasket on a lit kitchen cooker gas burner and also play the flame from my plumbers gas torch over the surface. I cannot get the whole surface cherry red at the same time but it works well.

Quenching in cold water gets most of the oxide off the copper. The rest I remove with a metal kitchen scourer.