so apparently i need new valve guides in the head I bought used on here, a head that was supposed to be ready to swap in. Anyways, anyone know where to buy them, and how much a machine shop would charge to replace them?
Ok, i saw what looked like threads on the guides in the pictures for the ones for sale online, thats why I didnt think they were pressed in. Does anyone know the approximate cost to have a machine shop replace them? The machine shop I went to didnt give me a price, they just said its expensive
If you plan to run anything but stock cams, the replacement guides need to be machined and then pressed to depth.
im just going to tell them to do the new guides. They are telling me its going to need a valve job because the valve center will most likely change. Does this sound right? There was a 3 angle valve job already done not too long ago and would rather keep the $250 for other things.
ok just going to say this....
guid is pressed in...
to remove u need to clean it so that carbon dont harm the head.
the punch/grill out
then u need to reseat the valves because it will change the how the valve sits.
now to tell ezly if u need to change the guid.
get the valve out little bit jiggle it to see if it moves. if it does then yes u need to get new one. if it does not move or move next to nothing then dont worry.
I freeze/lube the guides and have the head at room temp before punching the guides in.
If after lapping you don't have grinding marks 360* around the valve and seat the guide should be replaced with a new one.
Deep 10mm socket works great for installing valve seals.
Thick grease work great for holding valve keepers in the groove.
for anything other than stock cams, you must take the lip off and press them in.
I crushed all my seals and will be redoing all 12 guides since i didn't listen to this when i did my head rebuild with autotech cams. may have even crushed a lifter.
it really ez to do. (reseat)
take verylight sandling compound put it on the valve pop the valve back in the hole twist it side to side for some time get the valve out clean it off and claen the head off.