tenugent Posted March 29, 2015 Share Posted March 29, 2015 Having a hard time fixing exhaust leak,anybody know why gaskets cant be used(russ martin says manifold will break).Just wondering how others have fixed this problem.After rebuild head wasn't plained so shouldn't manifold match up.Thanks T.N. roa 12969... Link to comment Share on other sites More sharing options...
1965rivgs Posted March 29, 2015 Share Posted March 29, 2015 Having a hard time fixing exhaust leak,anybody know why gaskets cant be used(russ martin says manifold will break).Just wondering how others have fixed this problem.After rebuild head wasn't plained so shouldn't manifold match up.Thanks T.N. roa 12969...I have used gaskets when I did not want to completely remove the manifold for machining or there was not enough good material on the manifold to make machining worth while. I have never experienced a problem doing so.I suspect the thinking is multi tiered ....some say the manifold acts as a heat sink, especially because it is located on the exhaust side of the head and the installation of gaskets will not enable the manifold to draw heat away from the head. I have never seen any data relative to head temps with and without manifolds installed but it makes technical sense to me...but the real question is, does it make an appreciable, real world difference in performance or longevity? Also of consideration is the possibility mounting and tightening each of the exhaust manifold logs independently against a "soft surface" like a gasket might prompt the twisting of the manifold and result in breakage. But I`ve seen quite a few non-gasketed manifolds break (in other applications) so I am not necessarily convinced this is an issue.Tim, be sure you do not have a cracked manifold. Best to remove it from the engine a closely examine it. At that point machining seems the obvious solutiuon. A friend, Ray Pecor, has just reproduced the exhaust manifold locks in stainless so this may be a good opportunity to do a thorough job and dress things up simultaneously. Good luck, Tom Link to comment Share on other sites More sharing options...
tenugent Posted March 29, 2015 Author Share Posted March 29, 2015 Thanks Tom,Ill post results when its fixed.T.N. Link to comment Share on other sites More sharing options...
RivNut Posted March 29, 2015 Share Posted March 29, 2015 A friend, Ray Pecor, has just reproduced the exhaust manifold locks in stainless so this may be a good opportunity to do a thorough job and dress things up simultaneously. Good luck, TomTom,How do we get in touch with Ray regarding the locks. When I took the manifolds off my '64 last month, the locks on all but one of the ports were the kind that are looped together. The other locks were just a couple of tabs. Is one kind correct or the other incorrect? Thanks,Ed Link to comment Share on other sites More sharing options...
JZRIV Posted March 30, 2015 Share Posted March 30, 2015 Tom,How do we get in touch with Ray regarding the locks. When I took the manifolds off my '64 last month, the locks on all but one of the ports were the kind that are looped together. The other locks were just a couple of tabs. Is one kind correct or the other incorrect? Thanks,EdOne way would be to message him through his thread on V8Buick. There seems to be alot of interest for these.http://www.v8buick.com/showthread.php?292893-SS-French-Locks-(exhaust-keepers)-for-Nailheads-any-interest Link to comment Share on other sites More sharing options...
60FlatTop Posted March 30, 2015 Share Posted March 30, 2015 I have locks on my '64 Riviera and they have been fine since I put the engine back in during the mid 1990's. The "60 Electra doesn't have the locks. I remember tightening the right side maybe 6 or 7 years ago. No gaskets and both are silent.Bernie Link to comment Share on other sites More sharing options...
RivNut Posted March 30, 2015 Share Posted March 30, 2015 One way would be to message him through his thread on V8Buick. There seems to be alot of interest for these.http://www.v8buick.com/showthread.php?292893-SS-French-Locks-(exhaust-keepers)-for-Nailheads-any-interestThanks for the link. I have the six loop kind for the ports with the short bolts; I just need two of the ones that fit the longer bolts. Or, did those two ports use the small tab kind? I took them off as well as the looped ones. Did Buick use two different kinds.Thinking that I was just missing two of the loop style, I ordered a couple from CARS. They're shown for earlier years but all nailheads apparently have the same distance between the bolts for each port.Ed Link to comment Share on other sites More sharing options...
tenugent Posted April 3, 2015 Author Share Posted April 3, 2015 Installed exhaust manifold gaskets from felpro kit,took car out for 60 mile trip.No problems so far,will keep an eye on it and check back in on outcome.Thanks for the responses.T.Nugent roa 12969... Link to comment Share on other sites More sharing options...
tenugent Posted April 3, 2015 Author Share Posted April 3, 2015 Retaction-gaskets were from bestgasckets, sent with rebuild parts from Russ Martin.T.N... Link to comment Share on other sites More sharing options...
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