660 heads

[thebiz]

ive got two 660 motors and one slipped time i was wondering if i could put the other head on and a new timing chain and go or is there can i not do this need answer fast leaving for little sahara on thursday

[Mad Dog]

You can do that, I assume your other head was damaged so that's why you want to swap them?

I would inspect the timing gear on the crank and the cam gear as well.

[thebiz]

alright i was told by someone i couldnt do that because the heads are pressed to that jug and something something it sounded like a bunch of b.s. tho thats why i was asking

[Mad Dog]

the valve cover is matched to the head, but as long as you move both you're fine.  Any head/cover SET can be used with any jug can be used with any SET of cases, unless you've got an oversized cylinder sleeve.

[phucker]

what happened to your other head? if you dont want it i might be intersted in it.

[4stroker]

im using a head and cover from 2 different bikes it works fine.

[Mad Dog]

im using a head and cover from 2 different bikes it works fine.

I'm not surprised that it has worked for you, but they are made as a set so while it's possible for the end result to be within an acceptable clearance/spec when joining two random parts it's not guaranteed due to manufacturing tolerances/variations.

If all works out then no harm done, but if the journals on both parts aren't lined up and mated just so then you'll be eating up camshafts and/or possibly the head and cover pretty quick.