Valve adjustment Screw.

[Dool]

not many kms and tge screw face is out of shape.
It is starting to go out of shape.


This is a new one, you can see your face in it.

And the Valve tip itself,

its has started to self destruct.

 

[Sbinf74]

I'm about to fit new, better quality valves... let's hope for the best. Do you know if there are screws that are even better than the original ones?

 

[Dool]

There would be something similar you would imagine.
It would be a matter of finding another engine that uses screw adjustment and 6mm 0.7mm pitch screw.
Do you know a motorcycle cycle wrecking yard?.

I am not suggesting that these parts are of suspect quality but point out that the kilometers were not high perhaps I mistreated them.
This head is my number 5, so divide 5 into total kms of 15000 and you start to wonder how may kms it has done.

For the price of the parts I would suggest they are changed every 4th oil change

 

[sam2019]

I wonder how there are engines with 100,000 km and those parts still work
or my own which has now 55,000 - and still works

 

[Dool]

I got lucky?

 

[Dool]

The last time you took a picture of yours did it look like mine?

 

[Dool]

Second Tappet screw failure, different bike, this has done about 3000kms.
look at 4 o'clock .

 

[KTM AL]

I have just replaced my tappet screws, due to them being slightly misshapen and having dished valves , alas with RE parts, do you know of another manufacturer (Honda?) of M6 tappet screws that would be worth a try? Could be an after market item to add to the HT shop?

 

[KTM AL]

I was looking at BMW 1150 GS tappets ,not sure if they are M6 ,look like they may be fine thread 1st pic, then saw these listed on eBay pic 2 for a Himalayan? I would be happier with a BMW part if they fitted rather then an unknown manufacture that could grenade in your head ,so to speak. Any input on this style of tappet screw?

 

[KTM AL]

I have just measured the RE tappet screw, they are a fine pitch 0.75mm thread M6 and 20mm long including the square end.

 

[Sbinf74]

Are the same ones that mount the J engines

SCREW-TAPPET ADJUSTING-ELEPHANT

 

[KTM AL]

I wonder why they didn't use them in the himalayan.

 

[thony]

I have just measured the RE tappet screw, they are a fine pitch 0.75mm thread M6 and 20mm long including the square end.

Are the R1150 good to fit then?

 

[KTM AL]

Are the R1150 good to fit then?

Not sure yet, after asking on a couple of BMW forums that I belong to, no one has got back to me regarding thread pitch. At the weekend I'll have a look at my R1100S, need to check valve clearance anyway. I just thought that the foot had a better contact patch rather than the domed Himalayan valve screw. There might not be enough clearance, wont know till I try.

 

[thony]

You got this.

 

[Dool]

this would appear to me to be the same pitch as the ebay sample you found, can you post the link pls.

 

[KTM AL]

Sill waiting for a delivery, but I don't think there will be enough room for the foot between the rocker and the top of the valve, as I only have about 3mm , and would need a bit of room for the foot to sit square on the valve. not sure about taking a couple of mm off the bottom of the rocker arm . We will see.