Imo000

This is the same shop that screwed up the second time?

Tom928

After the second screw up, I got a recommendation for a local shop familiar with 928. It's about 30 miles further to drive.
When I explained what had happened the guy knew what was wrong even before I finished my sentence.
Said he would pull all the exhausts in the 4.5L head, measure/pick one, clean/lap it. Check the seat condition & spring tension, put in new keepers and verify the seal.

Quoted me $50, if no problems.

I have a feeling it will be right this time... but we will see

Tom928

Engine is reassembled, back in the car and I am reconnecting everything. I've been thinking about any break-in?
Maybe do some hills aggressively or just drive it?

Imo000

Did you do a leakdown test before putting it back in the car?

Tom928

Yes. With the new head gasket torqued to spec, I get 8-10 sec's leak times across cylinders 1-4. Cylinder #4 was on the high side 9, 10 & 10.
It was satisfying to see the gauge show pressure on cylinder #4 instead of setting on 0