For anyone interested in knowing if the headgasket that Toyomoto sells is the same as the Toyota Supra TT head gasket, the official answer: I don't know. But here is what I've got:

Only lettering on the gasket is jmg262 with a white "1" letter after it.

The layering is:

layer 1 black coating on side facing up, copper core, bare copper face on other side. (THIN)

layer 2 black coating on side facing up, copper core, bare copper face on other side. (THIN)

layer 3 black coating on both sides (THICK) silver metal material (steel?)

layer 4 bare copper on side facing up, copper core, black coating on other side (THIN)

layer 5 black coating on both sides (THICK) silver metal material (steel?)

layer 6 bare copper on side facing up, copper core, black coating on other side (THIN)

Its all riveted together in four places. I imagine this is a key element to get the alignment correct for proper sealing.

Price $350, perhaps a little less if bought with a kit. Is it made with Supra MKIV gasket parts?? Very probably. Two Supra TT gaskets are gonna cost a minimum of $250 plus shipping so $350 is a good deal for the proper assembly and piece of mind.

So to recap, there are:

6 layers

thin
thin
thick
thin
thick
thin

I believe the only difference is that Larry leaves one of the thin ones out, which would raise compresison very very slightly.

 

Good info.

 

thx for the info scott

 

Has anyone here tried this yet? Thx

 

Thompson Charm has the DIY version, I have the Toyomoto gasket but as of yet neither of us has a vehicle running. I'll be ready sometime after the new year (budget permitting).