4MG Rebuild

Now for immediate questions:

1. Can I steam clean the block with our hot-water pressure washer, or should I try to avoid getting moisture in the block?
2. Is it critical to have the bevels going into the lower bores pristine so that they don't catch an o-ring? About half of the liners showed some damage to the top o-ring on the liner, but the other two were good.
3. If the deck measures good and the counterbores do as well, can a guy get by with just cleaning everything up including where the water grommets go, or is that just foolish - take the block in and have it decked?
4. Automatically plan on new cam bearings?

That's about it for now. Thank you guys.

 

As I understand it you can have the the block cut and Cast L sleeves pressed in, then machine the deck. I suspect that cutting counterbores became popular because it can be done in-frame.

 

Thank you! It may have to go Cat as I don't have the equipment or knowledge to do any of that, and I'm not sure if other machine shops in the area do. Are Counter Bore cutting machines able to cut the bigger diameter for the inserts?

 

I see the lines, but thought they were pretty thick (like maybe a half inch). I get what you're saying now. So on that deep one that we have on #1 they would cut for that ring down to where the counterbore depth is or a touch more? Would we have them all cut the same depth? We have a good local machine shop, just not one that handles the whole block from what I have been told.

So, I could get someone to come and cut those and then we can press them in here is what your thinking? I like that idea. I believe we can do the epoxy job on the lower bores ok. If I have the rings made do I ask for a specific material? They're not stainless by the looks of your picture.

 

I think I'll run into town and visit the machine shop. I called JPaydirt this morning to see where he gets his machine work done and he said that he didn't think they did truck engine blocks, but maybe the can cut the holes and build the rings. I'll update!

Thanks Russ!