head machine

[gomezmk]

Everybody keeps on saying to have your head machined when changing to a metal headgasket. I bought a jdm motor, installed a 1.4 mm metal head gasket and arp studs torqued at 80ft/lbs without doing anything but cleaned the head and block really good. I run 11 lbs of boost and it runs beautiful.

[jfunez]

sounds cool, but this may be out of the subject.

I hear a lot of guys talk about some shims somewhere on the head, the thing is when I dismantled my 7mgte head I found nothing that look like shims on the head or the camshaft.
Am I missing something ?
By the way, I'm still in the process of doing the metal headgasket...I symply ran out of funds.
so far I had the hed machined, cleaned and tested, ARP studs,some of the gaskets but still lacking the 1.4 mm Cometic metal head gasket and turbo gaskets.

[Bill UK]

Originally Posted by jfunez

sounds cool, but this may be out of the subject.

I hear a lot of guys talk about some shims somewhere on the head, the thing is when I dismantled my 7mgte head I found nothing that look like shims on the head or the camshaft.
Am I missing something ?

The only shims I know of are used to adjust the valves,see links

http://www.cygnusx1.net/supra/library/TSRM/em/EM_09.html


http://www.cygnusx1.net/supra/library/TSRM/em/EM_41.html

[jfunez]

thanks alot bill ... that cleared my doubts greatly...

[ddmcse]

see the lines left by the milling machine ?

i removed those lines by hand, using a lapping tool

[Bill UK]

Originally Posted by ddmcse

see the lines left by the milling machine ?
i removed those lines by hand, using a lapping tool

How much did you skim off your head ? looking at your photo there seems to have been a lot of material removed. This is the photo of my head straight from the block.