The V8 Owners Forum -

Also don't assume new (aftermarket) parts are correct, i've brought replacement rockers and shafts before and the diameter of the new rockers is more than the oval worn dimension of the old worn ones! Fitted on the new shaft there was a lot of play. Sent them back and the replacements (different brand) where a lovely close fit on the shaft.
I would always measure your new parts to ensure they are in spec.

Tom.

Also don't assume new (aftermarket) parts are correct, i've brought replacement rockers and shafts before and the diameter of the new rockers is more than the oval worn dimension of the old worn ones! Fitted on the new shaft there was a lot of play. Sent them back and the replacements (different brand) where a lovely close fit on the shaft.
I would always measure your new parts to ensure they are in spec.

Tom.

garrycol wrote:Why use old cork gaskets - horrid things - use the much newer rubber ones that are slotted sit down on the edge of the head - use a bit of sealant ans the metal col-lets prevent overtightening and the ribber squishing out like cork can do.

Use the new rubber ones with the collets then Garry. The Cork ones (fitted as I said) will do the job easily. If the cork gaskets are fitted as I said before they wont stretch. Your rubber ones with the collets will leak eventually

Thanks for all the info guys.
I have rubber gaskets on the engine now but I'll try new ones and glue them to the covers. Give that a try. If still a worry I'll try the corkers.
Engine is still pretty new and was built for me by one of the better shops in the UK so I'd be pretty disappointed if the rockers and shafts are worn that much.
Not revving the nuts off it (my limit is 6k and most of the time I'm only using 5.5k) but long corners like turn 2 at Phillip Island seem to be the culprit.
Cheers!

I bought a set of brand new rockers from a well known uk engine builder several years back. They were looser on the shafts than the 100,000 mile ones I took off. Cheap Chinese copies I guess.

He took them back and stopped selling them.

There was a bloke on the Classic Rover Forum that made a set of shafts and bushed his rockers as an experiment. He was very happy with them and was, as far as I recall, roadtesting them before deciding if he would go on to sell them or not.

DaveEFI wrote:As an aside, the mention of EvoStick reminds me the current stuff is nothing like as good as the original. Think they changed the solvent. Is there a better alternative?

New legislation means that we cannot sell contact adhesives that contain Toluene to the general public, only companies.

So you need to buy an industrial grade contact adhesive like Alpha S758 or S1358, Evostik GP Contact Adhesive, or anything that still contains Toluene.

Richard

If you can locate some, there is a wonderful product we use in aviation that will sort your sticking requirements out nicely.
It will stick your gaskets to the covers or sump with no issues and it is a brilliant tank sealant, too.
A word of caution... DON'T stick something you will want to remove again one day....
It goes under the generic name of PRC.

http://www.ppgaerospace.com/Products/Se ... alant.aspx

http://www.ppgaerospace.com/Products/Se ... alant.aspx

http://www.ppgaerospace.com/Products/Se ... alant.aspx

Richard P6 wrote:

DaveEFI wrote:As an aside, the mention of EvoStick reminds me the current stuff is nothing like as good as the original. Think they changed the solvent. Is there a better alternative?

New legislation means that we cannot sell contact adhesives that contain Toluene to the general public, only companies.

So you need to buy an industrial grade contact adhesive like Alpha S758 or S1358, Evostik GP Contact Adhesive, or anything that still contains Toluene.

Richard

Excellent - thanks Richard.