Head Erosion Behind #6
 

I have the head off of my 86.5 supra. While examining the head I found erosion in the surface just behind the #6 combustion chamber. At first I thought that it was a clogged water port, but on cleaning it appears to be metal that has been eroded. I though that it was a water port because it's above a water port in the block and the head gasket has a water port in the same location.

Is this a feature of the supra block and head that they do not have matching water ports behind #6? Is the head supposed to have a water port in that location? Has anyone else experienced this and found a good solution?

Thanks.

if there is pitting in the block i would see how deep it is and if your machine shop can machine it down to get them out

what power are you going for? that's a big thing in deciding what you will do with this block

and yep it's common to have mismatched cooling jackets on block & hg :)

some random toyota thing lol

The erosion is in the head. A pocket about 1/8" deep 1/4" wide and just less than an inch long. A collegue recommended JB Weld to fill the pocket then file to match the head surface. Has anyone had expeience with an approach like this? If so, did it work?

just on the head none on the block ?
http://www.ddmcse.com/turbo/bhg_2003.htm

^ that block is after it was machined :o

that's friggin terrible

here's my block after machining :) (sorry 56kers)
[img]www.supra.co.nz/IMAG0025.JPG[/img]

i would assume my hg will seal hehe

so ya let me know if that is after it was machined