RB26 head repair ??

[RB26zcar]

Hey all, I have a question for any of you RB26 addiicts.... I need to find a place that sells/ makes a repair part for a RB26 head that has the valve spring bucket (lifter) pocket damaged.

The head was modified by some dumba$$ (Me) for a larger lift cam, and in the process, the area that seals the oil preasure was cut into a little bit. Now, the bucket will not totally seal the oil preasure as required.

I'm sure on the RB26 head, there is times when this wears beyond spec, and must be renewed, so who/ how does this get renewed?

I've thought of boreing out the lifter pocket, and installing a sleeve into the pocket to bring the clearnce back to spec, but can't find such item for sale.

I swear I saw a post on this exact repair somewhere before, but can't find anything now.

Does anyone have any known fixs for valve lifter pocket repair?? Anyone know who sells a repair sleeve for this ??

Please advise....

thank you

joel

[proengines]

You probably could make a sleeve to fit but it would have to be awful thin as you will be boring into the cam tunnel when you bore out the head to fit it. I've done Jaguar 6cyl heads before but its a premade steel sleeve for them and theres plenty of room.

It might be worth getting it welded up to start with and if it distorts too far then try to sleeve it. If it welded ok most cylinder head shops would be able to bore it back round again.

Then again, it might be easier to start with another head if you weigh up the costs of fixing it vs the long term result.

The best way to machine for cam clearance that I've found it to use a 20-21mm slot drill in a milling machine set to the same angle as the original recesses to clear the cam lobes. It takes a couple of hours but comes out spot on. Once you set the depth you cant go too far and every one is exactly the same.