The moco has discontinued the rocker boxes.
Does anyone know of a good aftermarket source?

Another question:
Is there a good way to flatten a warped rockerbox?

 

I have had luck with the one from mid usa motorcycle parts - chrome is good and they go on and dont come back with leaks

 

Thanks john

 

Yes, get a thick flat steel plate that you can drill/tap the needed bolt channels and as you are tighting the bolts 1/8 turns per set down on the plate, apply heat to he box to un-warp it alone the way. Don't go buck wild with the heat, since your not trying to melt the diecast metal, just soften the metal so the bolts can bring the entire rocker plate and box back to lever against the bolting plate surface in the end.

Hence rocker assembly gets warped by not having the lifters on the bottom side of the cam before you start to loosen the bolts to take the pressure off the rocker box (outside bolts first, then inner 4 long ones last with 1/8" turns per set), to bring the entire rocker box up level with tension off the lifters/push rods.

 

If the bolts were on the outside corners I could see that working but as they are more towards the center I'm not sure it would.

If I ever get the time I'll give it a try and see what happens.

 

Would need a photo of how bad its warped, but keep in mind that the bottom of the box flats can be faced to get them back on square, with the lifters have plenty of piston travel for slightly more preload from solid push rod use as well.