First a little background, when I dropped the motor from the car, I needed to be able to lift it up onto a bench. In order to do this, I removed the exhaust system to shed a few pounds and reduce the overall size of the cumbersome chunk of metal. In this process, one of the Exhaust Studs came out of the Cylinder Head instead of the nut coming off. In addition, there were a couple more nuts that had to be, shall we say “persuaded” to let go? As a result, it was obvious to me that the Exhaust Studs needed to be changed. This is no big deal and a very good idea to change as much of the hardware as possible on a 40yr old car.
Well, it is a big deal. Needless to say that the studs do not want to move from their “home” of 40 years. Over the course of this time, through the process of heating and cooling, these studs have hardened and bonded to the head rather well. I first attempted to simply grab the studs with Vice-Grips and unscrew them from the head…. fail. Next, I placed two nuts on the stud and tightened them to each other, effectively transforming the stud into a bolt, and attempted to remove them…. fail. Now it was time to get serious. I welded nuts onto the studs and began spraying them with PB Blaster. I repeated the PB Blaster treatment every night for a week…. fail. (Along the way, insert various “tricks” with hitting them with hammers and such, with no success.)
By this time I had started to resign myself to the fact that I might just need to be on the look-out for new heads and began looking online at prices. I even found a “Stud Extractor” at Harbor Freight…. fail. By this point, I have one stud stripped out of the head, two of them sheered off flush with the head, one drilled through completely but with the threads still in the head, and the remaining studs in various states of “manglement” (of course that is a word, it came out of my mouth didn’t it). I now knew it was time to turn the heads over to a pro, the limit of my skills has been surpassed a long time ago.
I drop the heads off at a somewhat local VW shop on a Saturday morning. The owner asks if I am going to wait on them. I chuckle back, knowingly, “Na, take your time.” He thinks he will have them drilled out and finished with helicoils and new studs Monday morning…
Monday afternoon comes and my phone rings. He had gotten three studs out and then broke his drill bit in the fourth one. After spending a good amount of time trying to correct the mishap, he was about to give up and recommended that I might need new heads. (I don’t feel so bad now, he got to the same point I was at!) He called back with a quote for new heads and I asked him to wait a while before I make a decision. (It’s OK man, I know how you feel)
The next day he calls again, with new vigor. He has some stronger drill bits on the way and wants to take another stab at it. After some more work, he had one head finished and was now stuck on the other one. So, he orders more, different drill bits.
So I am still waiting for my heads… On the plus side, he claims to have a Type 3 Header in stock. Whenever my heads are ready, I will see if it actually is for a Type 3. If so, it will soon be time to fab up my Harley Davidson exhaust.