Head Gasket thickness selection

[IJ.]

Ok, lets say i'm a dummy. I tried using this calculator , but somethings off http://charles.generationz.net/Supra...asketsize.html. If the stock HG is 1,37mm, we took 1,00mm from the block and 0,4mm from the head. Where does this leave me?

1mm = 40 thou

.4mm = 15 thou

55 thou = 1.39mm, you add this to 1.37 to get 2.76mm, closest you'll find is a 3mm MHG, never seen a 2.8mm.

[hvyman]

Cometic can make it tho I'd rather use the hks.

[enjoyer]

1mm = 40 thou

.4mm = 15 thou

55 thou = 1.39mm, you add this to 1.37 to get 2.76mm, closest you'll find is a 3mm MHG, never seen a 2.8mm.

So, i actualy calculated corectly. Just wanted another opinion from the supra god, i mean IJ. So, i milled everything to fit a 3mm HG. OK,now the next question. I've red a lot of different discusions about HG manufacturers and still i'm not sure witch manufacturer is a better choise. I've got an option of custom made HG, but that's a bit expensive. If any of you have bought 3mm HG, could you give me any feedback, and where to look for them(with links for buying). I found some myself, but i just want some second opinions.

[IJ.]

Ran a 3mm Cometic for many years here no probs at all.

[enjoyer]

Ran a 3mm Cometic for many years here no probs at all.

I've searched Cometic site more than once and i can't find what i'm looking for. They give only kits without any info on HG thickness.

[IJ.]

PM Suprarich he stocks them.

[enjoyer]

PM Suprarich he stocks them.

Thanks

[Chello]

Awesome thread, great information. I am in the process of building another motor due to BHG.

Is there a prefered material? I.e copper or MLS? That's assuming anyone does a Copper head gasket.

Is adding a sealing agent a no no? I heard spray-on holymar was a good thing, anyone had experience with it?

I'm yet to get the machining place to measure the head and block heights but have to wait until I get the pistons so they can do the boring and surfacing at once, before they can measure it for me

[jdub]

Use MLS - copper would have to be wired around the cylinder for a seal. Way too much work for zero gain.

Never, ever use any kind of spray on sealer on a new MLS HG. It already has a viton coating - the spray sealer will destroy it.

[Chello]

Thanks for the reply jdub.
What do you mean by wired around the cylinder?