beefystud

i lunched my motor from oil starve , block is toast , theres wear on one of the cams at the end and on the girdle

is the girdle/cam/ head toast too ?
do i have to just throw it all out ?
can i still use it or have it machined or should i just not even bother ?

windhund116

Need to do some precise measuring and check against specs. Micrometer and/or Plastigauge

flanders

Cam could probably be saved but don't think it's worth trying to save the cam caps/girdle.
Rest of the head should be fine.

beefystud

problem is you cant buy the caps by themselves, have to buy the whole head...

flanders

New yes, but you should be able to find a used set for not that much.
Just make sure you get the whole set of caps and do not mix between different sets. The 10 caps are a 10 piece, line bored, matched set.
Cams can be mixed safely but might as well get those from the same donor head, then fix the bad one you got and sell.

Mr.Matchbox

THIS. Usually the whole thing is manufactured as a set. The workers clamp it on the milling / boring machine and press the button. They dont care if the next set is clamped in the exakt same position, because it is is absolutle unnecesary and cost to much time. It´s the same with every japanese motorcycle cylinder head. You cant switch the camshaft caps. While the diamter for the camsahft is exact, the postion of the bore has a greater tolerance

BUT, it is possble today to add new aluminum to the damaged surfaces with laser welding and then bore and hone again. Its just a question of cost compared between a used set and laser welding and new boring / Honing.

zeroptzero

Did the oil pump really seize up ? I can't imagine how that can happen

beefystud

low oil pressure light never came on , never even flickered