I'm planning on stripping my z6 head until there is nothing left except the valve guides. I want to hot tank the head and get it resurfaced. Would it be ok to leave the guides in there or would tanking the head damage them?

 

i woudl think the valve guides would be fine but i would replace them on rebuild. are you just soaking them in warm solvent? and do you already have a place to do this at? its really cheap easy to build your own setup.

 

They will be fine you don't need to replace them. If you are going to I would put bronze guides in, but this to my knowledge can only be done with the right tools. If a guide was bad on factory head you would have seen it as soon as you pull the valve out but there are specs for this there in any repair Manuel but a machine shop can also check this for you 2


Modified by slvrcvc93 at 7:43 AM 5/6/2008

 

What kind of solvent would you use? I just didn't want any kind of metal shaving in the head after it's been resurfaced.

 

grab a big tank some copper tubing an air regulator, drill a bunch of holes in the copper tubing and row it acrost the bottom of the tank, hook it up to an aircompressor and let some air flow through it to cause bubbles, fill the tank with diesel fuel and put whatever in. that will clean whatever and remove even heavy heavy sludge in a matter of hours, too long will actually pit the metal. we built one in our highschool autoshop out of an old cheststyle freezer and would soak whole engine blocks in there and it would remove everything. when i redid a set of heads i did it in a parts washer with a mineral based solvent and it took me a week of scrubbing to get everything off, vrs a few hours in this tank.