aribop

back from the machine shop where they welded the broken mounting tab for the chain tensioner. They did an awesome job! Even resurfaced the deck. Can't wait to get it back on.

aribop

another shot

aribop

doing a little cleaning..

aribop

one more

Matt H

Those valves dont look that hot. Did you reuse them?
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marky522

I have seen people say that it was expensive to replace that style head, just wondering what it cost you to have it fixed as opposed to replacing it? and is there any issue with the repair job breaking again?

Mark

jaibeiber

i had my S head welded once. it broke again in a different place. i was told that it was because when you heat up aluminum you weaken it at the same time. i hope you dont have the same problem i did.

Lonely Raven

That also depends on how it's welded. Different types of welders will
heat up the material differently.

The higher the quality of welder, the quicker the weld, the less heat
throughout the aluminum.

I had a friend that used to build aluminum mountain bikes and I'd be
the test guy to see if I could break them.

I can't remember the differences, but there are MIG and TIG and one
other one. There is also some sort of plasma spot welder, but I doubt
you could use that on a head. I've only seen it in use for bonding
conductive cabling and such in high end audio gear.

tod84944

I have a 87 S head that I was told that could be repaired. It dropped a valve and parts bounced around till it broke the top of the piston. It is chuncked up some. I bought the car with the blown motor. Chickened out on the 16V, putting a 8V in. Got all the stuff if anyone is interested.

Dal Heger

Make sure that you have them check it for cracks, especially around the head stud areas.
I had my head "fixed" after a tensioner failure and they missed a couple cracks that let coolant into the head area. I now have a new head from Porsche....

Dal.