Sq4 Mk2 Rocker Arm Wear

[allan.walker]

I'm in the process of building a Mk2 engine from accumulated parts. I have a set of rockers (B-type, with adjuster over the pushrod) and they all show a noticeable wear ridge on the pad which contacts the valve stem end.
What is the best option for repairing them? Can they be ground/stoned back to the correct profile? Do they need building-up with hard weld first? Would the ends need to be re-hardened?
Is there something else I have missed?

[Roger Gwynn]

The hardness should be about .060" deep so light wear can be stoned out, without going through the hardening. Something to do in front of the fire on a winter's night. If they are badly worn, building up with Stelite or similar and regrinding or just re-grinding and hardening will have to be done.

[allan.walker]

Thanks, Roger. It looks like all the rockers are beyond the .060" limit so will need building-up and grinding.
The next question is, who in the UK does this kind of work? Does anyone have any experience of having this work carried out?

[JohnnyBeckett]

hi, i think DRAGS do it , or they get it done, you will get them from them

[allan.walker]

Hi Johnny,
I don't see any specific references on the Draganfly website, just a general mention of engineering services. I'll phone them and ask.

[JohnnyBeckett]

hi Allan drags was offering reprofile cams and rockers ,they done your ones , or do exchange ones