[LS1] Decking the block

[MiKExAUS]

After pulling the heads to inspect and replace my lifters I've managed to put a few gouges in my block when cleaning up the deck with a razor blade ready for a new head gasket. I'm hoping the viton parts of the new gasket fill the troughs and block any coolant leaks. I'm thinking I should sand the deck to remove any high spots too. Keen to hear how other people have done it and if they think I need any other interventions ie JB weld.

Thank you!

 

[shane_3800]

You should give it a very slight rub with sand paper on a 100% flat block every time.
If you're that worried just buy some MLS gasket spray.

 

[MiKExAUS]

You should give it a very slight rub with sand paper on a 100% flat block every time.
If you're that worried just buy some MLS gasket spray.

Thanks Shane. Sounds like a good idea to remove any potential high spots. Any particular grit range recommended as I thought the MLs gaskets require quite a smooth surface.

 

[hademall]

You should give it a very slight rub with sand paper on a 100% flat block every time.
If you're that worried just buy some MLS gasket spray.

Fine grade sand paper?

 

[shane_3800]

Thanks Shane. Sounds like a good idea to remove any potential high spots. Any particular grit range recommended as I thought the MLs gaskets require quite a smooth surface.

400 or 600 should be good, 800 won't do much.

 

[MiKExAUS]

400 or 600 should be good, 800 won't do much.

Great. Would you also recommend doing this to the head deck if i'm not having it machined?

 

[shane_3800]

Great. Would you also recommend doing this to the head deck if i'm not having it machined?

Yes. But like I said it only needs a few rubs.

 

[MiKExAUS]

Yes. But like I said it only needs a few rubs.

Can you recommend any store items for a 100% flat bar? Would a honing stone or sharpening stone from Repco/bunnings be dead flat? Otherwise I guess I'll have to call around to some machine shops

 

[lmoengnr]

Can you recommend any store items for a 100% flat bar? Would a honing stone or sharpening stone from Repco/bunnings be dead flat? Otherwise I guess I'll have to call around to some machine shops

Go to a glazier and get a piece of plate glass cut to suit the paper you're using. Wear gloves.

 

[shane_3800]

Can you recommend any store items for a 100% flat bar? Would a honing stone or sharpening stone from Repco/bunnings be dead flat? Otherwise I guess I'll have to call around to some machine shops

No those stones are bent like bananas.