420A Is this block fixable or should I get a new one?

[eziomandude]

Here's a video of the Block and me brushing my nail against the scratches. Can I bore it out or do I have to get a new block?

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[Murdertalon]

You might want to ask a local machine shop. It might be able to be polished, but I think it depends on how deep the scratches are. If you have it bored over you can go to larger rings to give you more hp. Another option is get a 2.4 block..

http://www.dsmtalk.com/forums/archive/index.php/t-67296.html

 

[eziomandude]

Is there a specific way to tell how deep the scratches are?

 

[steve]

Based on all that rust pitting I'd expect that block will need the cylinders bored oversize to clean it up.

 

[eziomandude]

I knew I was gonna have to bore it out. But .40? .20? .10? I have no clue. But I don't wanna spend the money to test each .00 until I get it correct.

 

[steve]

The machine shop will tell you how much they have to cut to get rid of all of the pitting. Then you can order pistons and rings to match as I understand it.

 

[DSM_Ant]

If this is a DD I would say get a new block. They are all over the place. And as Steve said, it would have to go to the machine shop to get not only the scratches but also the pitting out. Then you have to order parts accordingly. Which can take a decent amount of time, and will probably be more expensive.

 

[eziomandude]

You could say it's a daily. But wont be for a couple years or so.