My First Blown Head Gasket

[Medium Dave]

The head has been removed from the block, and I have started scraping old gasket muck from the block, but just wondering what I can use to make it shiny clean - I read in a yankie V8 rebuild book that they use a 1/3 sheet sander on the deck (not to remove metal, just cleaning it) Is this wise - would you use a fine grade paper and give it a quick once over?

Or should I give it a going over with some deagreaser or metho on a rag?

Or is there another method for getting it cleaned up?

Also, what is this aluminium spray they use on head gaskets? should I use it, or is there another sealant/gasket cement I should use?

-A mechanic looked at it an said it should be ok without getting the block or head machined, but I will have the head done for peace of mind. It is also getting a gasket kit, new water pump and timing belt.

Apologies in advance for the noob q's - What I need is a large print picture book Thanks all

Edit: forgot to mention, its an RB20DET

Edited October 7, 2008 by Medium Dave

[adam-__-]

When I had to replace my head gasket, I just scraped off all the old gasket with a sharp blade. Just kept at it till the surface was nice and smooth. Before I reinstalled the head with new gasket, I gave it a wipe down with some metho to make sure it'll have a good contact without oil or anything getting in the way.

Whether or not you should use the spray to put the gasket on will depend on the gasket you buy. There was no need to use any extra seal with my gasket, but I've heard of others needing it before installation. I'm guessing it just depends on the gasket you purchase.

This was all done on a 4AGE Toyota motor (naturally aspirated), don't think it would be much different for an RB20.

Edit: I did this about 2-3 months ago and the motor's still running strong!

Edited October 7, 2008 by adam-__-

[rinmak]

When I did mine (rb25) I went over it with some fine grade sandpaper and it got the block looking really good. The head I had machined as I wouldnt trust scraping away at the head (being a softer alloy could dent it easily).

That said, the car still isnt running so I cant say how well it has worked.

Would be interested to hear if others have used the sandpaper method as well?

[Medium Dave]

Thanks guys, as for the gasket, I will just be using the standard nissan gaskets