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Head Resurfacing question

chev1988rolet

chev1988rolet

New member
I have a question if anybody can help me but not about my prix. I am working on an LS1. Changing head gaskets to be specific. The owner sent the heads to get rebuilt. I'm not sure how smooth the surface should be but its a lot rougher than the block deck. it looks as if they used a large sander to do the resurfacing cause i can see and feel all the little scratches that a belt sander would leave. is this normal or should it be just like the block. its smooth but not when i run my nail perpendicular to the lines. can anybody help?
 


Look guys, I'm a mechanic from South Texas. I have fixed a whole lot of vehicles. even fords. ( yes I am ashamed but it payed bills) lol. I have 4 vehicles to fix right now and that's not including mine which needs a swap. I have the engine ready but can't start until customers have theirs. I'm frustrated cause I have no Co workers. A friend told me to use that copper spray that is used on head shims. does anybody have any experience with these type of machine shops and what they used to fix this. I just wanna make sure the car last at least 50,000 miles form this piece of s**t resurfacing.
 
minor grooves should not be a problem as long as the heads are not warped the head gasket will fill imperfections, but if you feel they are that bad you have a couple options 1- use a straight line air sander with a fine grit, work it evenly over the head and it will stay true and it does not take much to clean it up 2- you can use a die grinder with a scotch bright surfacing disk (medium grit) keep in mind that this method requires a fair amount of finesse as you cand gouge a head if you hold it in one spot.

i have used both methods when replacing head gaskets/seals on diesel engines and have not had a leak yet and some engines are approaching 400k since they were done, on a side note i'm not sure if you are dealing with steel or aluminum heads but method #2 should not be done on aluminum heads unless you use great care
 


basically a head surfacer is a big belt sander so texture is fine should last a long while as long as everything is torqued correctly
 
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