Jac Posted June 27, 2020 Report Posted June 27, 2020 Hi guys, I am really enjoying this forum. It is very valuable for a beginner like me. Does anyone has an idea what I can do best to get my manifold off? There are still 2 thread ends in which I drilled almost to the end. But the manifold still will not go off and there is totally no movement. Now I am not sure how to continue. Quote
Plymouthy Adams Posted June 27, 2020 Report Posted June 27, 2020 did you count to 13 the number of fasteners removed....bottom center is very hard to get to and often as hard to see... 1 Quote
maddmaxx1949 Posted June 28, 2020 Report Posted June 28, 2020 Seconding the post from Adams, I've missed that one twice when pulling manifolds. Once that one was loose I was able to give it a jiggle and it came off. Just don't bang on the manifold that's how I cracked my last one... Quote
Jac Posted June 28, 2020 Author Report Posted June 28, 2020 I counted 13, including the 2 that I still have to do. Do you mean there are 2 more somewhere? I have looked everywere (I think) but cannot find those. Can you explain were they should be? Quote
Sam Buchanan Posted June 28, 2020 Report Posted June 28, 2020 #7 is the one that often gets overlooked. There are 13 total. Quote
MarkAubuchon Posted July 1, 2020 Report Posted July 1, 2020 Been there done that. If you have the nuts off, hit on the manifolds to break to gasket seal. Once its off you will be able to get the studs out. Good Luck Quote
Kilgore47 Posted July 2, 2020 Report Posted July 2, 2020 I had to remove the intake and exhaust manifolds on my 1947 P15 a few days ago. It was a challenge. The stud at #9 would not let go. The nut came off - the stud was stuck in the manifold. We heated, oiled and banged for two days. I had removed the inner wheel well for access on the second day. Gives great access to the side of the engine. On the third day I went on line and found an exhaust manifold and ordered it. On the fourth day I used a grinder and removed the old exhaust manifold piece by piece. The stud at #9 finally broke off in the block and everything came apart. It was easy to get to and drill out the broken stud with the inner wheel well removed. Good Luck Quote
Dodgeb4ya Posted July 2, 2020 Report Posted July 2, 2020 I had a 1942 DeSoto I had to break the manifold apart to remove it also. Because of those two rusted studs. Much easier and labor wise less costly to install another manifold on that job. I air chiseled the old manifold apart from the two studs...then unscrewed the long studs out of the block. Quote
Kilgore47 Posted July 3, 2020 Report Posted July 3, 2020 I have an air chisel and I didn't think of that. Would have been a much cleaner job. Grinding cast iron makes a really big mess. I spent the fifth day cleaning up the shop and cleaning the block so it's ready to install the new parts when they get here. Hope they get here soon. Quote
Jac Posted July 10, 2020 Author Report Posted July 10, 2020 After drilling the threat end almost until the block and with brutal force a hammer and chisel between the block and the exhaust, finally the threat ends brake off. The exhaust is still almost perfect! Quote
Sam Buchanan Posted July 10, 2020 Report Posted July 10, 2020 (edited) 4 minutes ago, Jac said: After drilling the threat end almost until the block and with brutal force a hammer and chisel between the block and the exhaust, finally the threat ends brake off. The exhaust is still almost perfect! Excellent! Get a stud extractor and you may be able to get some of the studs out without needing to drill them. Wow.........a plastic fuel filter right next to the exhaust manifold......... Edited July 10, 2020 by Sam Buchanan Quote
Jac Posted July 17, 2020 Author Report Posted July 17, 2020 Today something terrible happened.. My exhaust feld down on de concrete floor.. So after a lot of work I still need to order another one if I can find one. 1 Quote
Plymouthy Adams Posted July 17, 2020 Report Posted July 17, 2020 sorry to hear of the unfortunate accident...however, don't you have any weld shops to exact a repair on this flange. Quote
busycoupe Posted July 17, 2020 Report Posted July 17, 2020 I had an "ear" on one of flanges on my exhaust manifold welded about 5 years ago. It is still OK. Yours is aq bigger break, but that might actually be easier to repair because there is more surface area to weld to. 1 Quote
Jac Posted July 17, 2020 Author Report Posted July 17, 2020 Think it is quite difficult. Was yours welded wit mig/mag welder or with elektrodes? Quote
busycoupe Posted July 17, 2020 Report Posted July 17, 2020 I did not do the welding, so I am not sure how it was done. It looked like it may have been done with a torch. Quote
Adam H P15 D30 Posted July 17, 2020 Report Posted July 17, 2020 I've done it with high nickle arc welding rod. 1. wait for spouse to go out for the day 2. turn oven to VERY HOT 600+ deg 3. heat manifold to VERY HOT while preparing your welder 4. weld for 2-3 minutes and put back in oven for 10 minutes 5. leave in oven after welding and lower temps over a few hours Hard, yes - Impossible, no Quote
Adam H P15 D30 Posted July 17, 2020 Report Posted July 17, 2020 Almost forgot, I was peening the welds as I went to relieve stress Quote
rallyace Posted July 20, 2020 Report Posted July 20, 2020 Check with Mark or Marcel at R and D USA Classics. Mark is getting a shipment ready to go the Netherlands. http://www.rdusaclassics.com/ Quote
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