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Tractor Talk Discussion Forum

Would you try to save this Intake Manifold?

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North TX 656

06-17-2007 05:53:54




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third party imagethird party imageMy first thought is to buy a new one but I think they cost about $200. However if you think there is a GOOD chance I can drill out these 40 year old studs, retap, etc. I will give it a go. (I'm kind of looking for moral support in spending the $200) Like an idiot I broke off the heat riser weight thingy in the process but I think I can JB weld that back together

The job started off as an exhaust manifold replacement on a Farmall 656. Surprisingly the exhaust manifold bolts came out pretty easily. The bolt heads had shrunk enough that a 14mm 6 point socket fit the best.

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george md

06-17-2007 12:17:50




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 Re: Would you try to save this Intake Manifold? in reply to North TX 656, 06-17-2007 05:53:54  
That manifold is just a minor inconvience , here
is one that was a little more tricky .

third party image

Showing back of the broken heater box

before

third party image

assembled box , back side

after

It is best to take the broken bolts out on a milling machine with an end mill, that way you can control the location of the hole . drill bits tend to wonder off by themselves.

george

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the tractor vet

06-17-2007 08:45:42




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 Re: Would you try to save this Intake Manifold? in reply to North TX 656, 06-17-2007 05:53:54  
I have seen worse and saved them , Them old stud- bolts will come out with heat on the side of the manifold just don't try and rush the job . ya can either use a flat file or have a machine shop take a light cut to clean up , then install the exhaust but do not tighten it down just yet mount it to the head with NO gskts . and snug it down then thighten up the exhaust to intake then remove take it back to the amchine shop and have them take a truing cut off the face so everything is even and put her on and tighten it down to 35 ft. lbs warm it up and rethighten again and keep doing this as it takes a bit for everything to seat in . also get some NEW THICK flate washers at times they are hard to find and at times i have had to have them made from bar stock to get them thick enough.

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North TX 656

06-17-2007 20:34:51




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 Re: Would you try to save this Intake Manifold? in reply to the tractor vet, 06-17-2007 08:45:42  
Thank you for all the feedback. I'll try PB blaster and the welded nut thing and see how far that gets me. Don't think I have time for the electrolysis right now and I don't have a milling machine, only a drill press. I'm not buying a torch and tanks until I finish building a workshop. I promised my wife when we got married that she would always be able to park her car in the garage and it's getting pretty hard to open her car door. :)

Having a shop true up both surfaces after mated sounds like a great idea. If both parts are new should I still have this done?

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Walt Davies

06-17-2007 07:24:58




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 Re: Would you try to save this Intake Manifold? in reply to North TX 656, 06-17-2007 05:53:54  
It looks rebuildable but you had better have the tools , a good torch a tank to soak it in and maybe a sand blaster. also metal working tool to remake the heat riser. Hey nows a good time to explain to the wife why you need all those tools to save the $200 for a new one.
Walt

PS I got my wife trained to think tools not new parts.



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RustyFarmall

06-17-2007 06:37:44




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 Re: Would you try to save this Intake Manifold? in reply to North TX 656, 06-17-2007 05:53:54  
J.B. weld most likely WILL NOT tolerate those high temperatures. As for the studs, run a nut down on what's left, weld the nut to the stud, then take your torch and heat the area around that stud. Put a wrench on the nut while everything is still hot, and they should come out. If you don't have a torch and a welder, $200 for a new manifold is not such a bad price.



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BEN in KS

06-17-2007 06:36:39




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 Re: Would you try to save this Intake Manifold? in reply to North TX 656, 06-17-2007 05:53:54  
Worth a try; my first suggestion would be a trip to the electrolysis tank for awhile. Search the archives if you've never done this. I have rescued some BAD looking stuff this way. Studs may come out easier afterwards too. HTH Ben



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