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Republican
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8,421 Posts
Discussion Starter #1
So, how do I do it? I am having the head milled, but what about the block? clean it with a razor? I'm just not sure. I have looked in the MHG thread, and thier is no mention of it. BTW I DIDN'T blow my HG before i took it off.
 

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Dr Wheelspin Rh.D.
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4,393 Posts
If you're putting a MHG in you need to have the head and block resurfaced. If you think you are lucky hit the block with some mild cleaner and a rag. I wouldn't use a razor on the block.
 

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Premium Member
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4,409 Posts
get gasket remover from auto parts store, smere it on there, and scrape off till its all nice and smooth...

Ang
 

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Can't touch this!
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1,404 Posts
Is the block out?

If it is then I would have it machined as well!

If it isn't then take out the 2 pieces of doul that are on each end of the block. Take a razor and go over the block for quite a bit trying to get all the crap off. Then lap the block using a drywall sander and the different grits of paper. I can't remember which grits but I'll check that today for you.

Then it should look almost brand new!

I think that's it for now!

Later

Jason
 

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Registered
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1,719 Posts
I used a razor blade and cleaned up the block surface...should be OK as long as you don't score the block surface
 
N

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Guest
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usually the block is in good shape if there was no BHG yet, and no detonation running stock boost, right?
 
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3,796 Posts
Yeah....I used some solvent (paint thinner I think) and a razor blade and didnt have any problems. Is damn hard to scratch the iron block with a little razor so scoring shouldnt be an issue. Just make sure that where the MHG seals that you cant feel any bumps or ridges with your fingernail.
 

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Just say no to Supras
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2,292 Posts
Yep, I also used a razor blade. It was some scraper thing, so it was like 3" wide. Ive had no problems with my MHG so far with this method.
 

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LEADED FUEL ONLY
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2,068 Posts
Brake cleaner on a blue shop rowel will remove all surface contaminates. You may have to go thru and pick off all the blue fuzzies the shop towel will leave.

I used this after the block had been machined and lapped.
 

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Dr. Jeff Lange
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9,351 Posts
i had my block and head machined and lapped to very nice smooth before installing my HKS MHG, runs like a champ.
 
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