I know this is a tractor forum, but I am thinking the topic should be close. BTW I have gone back through the threads for many year here to get info. Thanks for all the help offered to others.
My story... I have an 1988 Ford 460 V8. I was told the exhaust manifold bolts are VERY hard to get out. The factory bolts have been in there for almost 30 years. In the process of trying to get the exhaust manifolds off, even with a lot of heat, I broke a couple bolts. I got a couple out and finally torched off the heads of the bolts, and pulled the manifolds. Ok... I sat at 6 6 6. 6 broken (2 were broken before me), 6 removed, and 6 studs sticking out (the ones I torched the heads off the bolts). BTW torching the bolt heads off was a bear. They just would not cut with a torch. I was thinking maybe I was getting low on Acetylene. Or getting tired. Almost empty, refilled this morning.
A buddy stopped by today and with the fun tricks I learned from here and others, (Acetone and ATF mix, Candle wax, heating and cooling) a better score, 7 broken bolts, 11 removed. We had to use a LOT of heat to gt them out.
Ok he said he is fair at blowing out the bolts with a torch. We gave it a try for a while and it would not work, it was starting to melt the casting. Hmmm Well we made a jig to drill out the remaining bolts. First one we tried the bit would barely cut it. He asked is that the same bit? (The one we used to make he drill guide) Yep same one. We are out of ideas. Well I grab a magnet and it does not stick to the bolts. ??? Maybe the factory used stainless bolts. That is why there is so much of a problem.
Ok how to you drill out stainless bolts???
What kind of bolt is this??? The markings are... There is a C with 3 small dot in a triangle under it, stamped in the middle of the head, and on the washer rim, it looks like a U, an 8 and the last is hard to read, it looks like a 6 on an angle.
My story... I have an 1988 Ford 460 V8. I was told the exhaust manifold bolts are VERY hard to get out. The factory bolts have been in there for almost 30 years. In the process of trying to get the exhaust manifolds off, even with a lot of heat, I broke a couple bolts. I got a couple out and finally torched off the heads of the bolts, and pulled the manifolds. Ok... I sat at 6 6 6. 6 broken (2 were broken before me), 6 removed, and 6 studs sticking out (the ones I torched the heads off the bolts). BTW torching the bolt heads off was a bear. They just would not cut with a torch. I was thinking maybe I was getting low on Acetylene. Or getting tired. Almost empty, refilled this morning.
A buddy stopped by today and with the fun tricks I learned from here and others, (Acetone and ATF mix, Candle wax, heating and cooling) a better score, 7 broken bolts, 11 removed. We had to use a LOT of heat to gt them out.
Ok he said he is fair at blowing out the bolts with a torch. We gave it a try for a while and it would not work, it was starting to melt the casting. Hmmm Well we made a jig to drill out the remaining bolts. First one we tried the bit would barely cut it. He asked is that the same bit? (The one we used to make he drill guide) Yep same one. We are out of ideas. Well I grab a magnet and it does not stick to the bolts. ??? Maybe the factory used stainless bolts. That is why there is so much of a problem.
Ok how to you drill out stainless bolts???
What kind of bolt is this??? The markings are... There is a C with 3 small dot in a triangle under it, stamped in the middle of the head, and on the washer rim, it looks like a U, an 8 and the last is hard to read, it looks like a 6 on an angle.
