gilbertxj466

I recently pulled the cylinder head, in order to replace the valve stem seals and replace all other upper motor gaskets. This motor has 250k miles on her, so everything is pretty well caked on. Here are some pics. What's the best way to clean her up, if I should clean at all??

Also looks like a may need some new valve stems if these cant be cleaned.

outlawcherokee

If you want it cleaned right take it to a head shop and get it hot tanked, not too expensive for just a clean job. Real simple just drop off and pick up throw a quick paint job on and be done. This will get all the internals ports and such.
If you just want it pretty and don't care about all the internals then get a tub and soak it with some simple green solution and lots of elbow grease with wire brushes.

gilbertxj466

Having the head cleaned with the Hot tank idea, seems to be the way to go. Any ideas on cleaning the tips of the cylinders? Wire brush and simple green?

Veeb0rg

You mean the cylinder bores in the engine block? Leave them alone.

gilbertxj466

Well te cylinder (piston) tops have a layer of crud on them. Should I scrap of the crud down to the piston top surface?

SeriousOffroad

This...


This....


Lot's of this...



Or this...

gilbertxj466

^^^ thanks. Actually just found my 24v dewalt cordless drill, what great timing !!

Veeb0rg

Leave em alone, you don't want to even risk messing up the cylinder walls.

gilbertxj466

^^^ yeah, the plan is to have the head and valves placed in a hot tank. The motor ran really well before I pulled it apart, so I think is the best option.

Aljay

Let sleeping dogs lye not worth opening a can of worms. Unless you are going the rest of the way down let it be. All or most of that will burn off .

freegdr

Taking it and getting valve job done is the best way .

gilbertxj466

So I took the head in to get hot tanked and the machinist advised that I get the head refinished. He said with out refinishing the head, it will leak when installed with a new gasket. I'm not sure that I'm buying this, what do you guys think. The head and gasket did not leak before removal??

lualchro

My understanding is that they should look for any warpage, even if minimal then it should be refinished.

However this is not needed in all cases (Refinishing)

SeriousOffroad

Have them check for flatness while you're there. If it's out by greater than .002".....do it.