Dodgy parts

[morris]

Ticked the 500 mile since rebuild box on the plunger so thought it was about time to retorque the head.
When taking the rocker box off, to my horror I found the valve stems badly damaged by the adjusters. Paid £60 for 4 new stainless steel valves and they're already good for nothing but the scrap bin
They came from a reputable dealer together with the adjusters. Seems the stems are to soft? Or the adjusters to hard? Or something else I overlooked?
If anyone can recommend a good source for a new set of valves, I'll be happy to hear.

Also recently ordered some different size main jets for the carb at another reputable dealer.
They came in a non marked bag and the jets were stamped W****l

[Greybeard]

I hope you are going to chase a refund

[morris]

I hope you are going to chase a refund

Will give that a try. You never know...

[Greybeard]

If the valves and rocker adjusters came from the same seller I can't see how they could argue about it.

[duTch]

 I had that happen to mine a long time back, and there was a guy with a workshop across the way from guys I knew, and he tipped them with either stellite or boronium- but can't remember if they're the ones I'm currently using , but maybe worth checking into.

[kiwipom]

hi guys, Morris is it possible to get steel caps for them? cheers

[duTch]

 

is it possible to get steel caps for them

 You mean like on old single cylinder Lister stationary engines CS-3/6...??

[beezermacc]

The steel caps are called 'lash caps' and they used them on A7LS. I've never had any problems with the valves I sell and I always refund on the rare occasions customers are unhappy. I have Wassell main jets in a couple of my bikes. When I've been trying to alter the main jet mixture ratio I find that the Wassell main jets function the way you would expect, i.e. fitting a bigger jet than the original Amal makes the mixture richer etc.

[Klaus]

I trust in German engeenering an use this tappet adjuster as shown in the picture.
The power that get to valvlestem is a distributed force.
The `lashcap`is build as a bolw bounded in a ball. All the moving from the rockers are eliminated in this item.
No vertical forces at the valve guides.

It`s hard for me to explain, but I think you`ll understand.


cheers Klaus

[Greybeard]

That looks clever. Where do you get them?

[Klaus]

That looks clever. Where do you get them?

It`s Mercedes Benz Partnumber A102 050 02 20  ask at a MB Dealer and order the nuts also

The thread is M 8 x1 but similar to  the britsh cycle thread, but it  `s easyer to fit with a metrish recut.

If the valve stem is damaged you can grind or cut  it shorter, so you have more clearence to tune.


Cheers Klaus

[RichardL]

Like the part. Not crazy about modifying the rockers.

[edboy]

klaus is showing off his elephant foot adjuster . triple owners use the porshe variety [expensive]also with lashcaps. another option is mushroom headed adjusters with lashcaps which i use on my triple without problems.i believe, but not possitive, the pre unit triumph used the same valve adjuster thread as the a10 but you will have to remove the rocker box to fit them.

[Rocket Racer]

My beesa triple runs lash caps and mushroom tappets, the triples rev far beyond any twin and the triples rocker geometry is very hard on the valves.
its not uncommon for singles or twins valves to burr at the top and need a light file to remove from the guide without damaging it.
Not that they should spread or mark under low mileages.

[morris]

Thanks lads. Gives me a lot to think about