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Can cast rocker arms be "REBENT"

Argos response to my inquiry:::




to me

Yes, you can weld them. I have had the same idea and tried TIG welding on some scrap TX rocker arms. It works.
I don't know the quality of MikesXS elephant foot adjusters but they look somewhat suspect due to plastic retainer rings.
I know a lot of XS650 owners using VW elephant foot adjusters with great success:
www.ebay.com/itm/120359789745
www.ebay.com/itm/120356238716
 
I like this possible explanation from Argo as well. Might just have to keep a feeler guage to them and be sure they stay well within tolerances...VERY often!!!


Argo Raudvee
10:26 PM (30 minutes ago)
to me

Charles,
frankly, I not sure if bending the rocker arms is a good idea. The more I consider, the more I think the misalignment is intensional.
This will turn the valve little by little within each lift and change the contact area of adjuster screw on valve stem. That means less wear on valve stem and valve seat.
Though, it doesn't look ńice.
 
But if thats a intentional innovation, why isnt the offset the same both sides??
 
If that's intentional I'd call it a failed experiment by Yamaha. You never know but that one valve is clearly more off center than the other. At minimum, I'd get that hammered one back to where the other is. Those mushroom head adjusters may be worth a try.
 
chuck hahn said:
I dont have the head right here to take any pics, but basically heres what we got. 1973 Yamaha TX750. ALL the holes for the adjuster screws line up perfectly with the center of the corresponding valve stems ..except the left cylinder intake rocker and valve stem.
Click to expand...
The only thing I've ever seen a valve rotator being used on is an exhaust valve.
 
I am gonna call the elephant foot guy and see if he has an email to send him the pics so he can see whats the deal...then I will most likely get then if I am satisfied with his input. Argo has advised me that you have to gring about 1 MM off the bottom of the threaded hole in the rocker arm to accept the conical shape of the foot though.
 
Last edited:
Sent the gentleman an email with the attatched pics for his perspective on these elephant foot adjusters...will see what he thinks once he sees the pics.
 
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