h67st Posted July 24, 2018 Share Posted July 24, 2018 I am swapping a different flywheel housing onto my '58 673 because it had the shallow housing before and the duplex that mates to it has some issues. The housing is about .032" off center so I need to ream for larger dowels (the existing dowels are 5/8"). Does anyone know if I have to go to 3/4" dowels, or can I get something like .650"? I haven't been able to find anything but 3/4". Quote Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/ Share on other sites More sharing options...
terry Posted July 24, 2018 Share Posted July 24, 2018 3 hours ago, h67st said: I am swapping a different flywheel housing onto my '58 673 because it had the shallow housing before and the duplex that mates to it has some issues. The housing is about .032" off center so I need to ream for larger dowels (the existing dowels are 5/8"). Does anyone know if I have to go to 3/4" dowels, or can I get something like .650"? I haven't been able to find anything but 3/4". Know of anybody with a lathe to turn down from a bigger pin? terry Quote Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-402969 Share on other sites More sharing options...
theakerstwo Posted July 25, 2018 Share Posted July 25, 2018 I am thinking cummins had a 11/16 but its been awhile. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-402981 Share on other sites More sharing options...
Freightrain Posted July 26, 2018 Share Posted July 26, 2018 Look up stainless pins instead of dowels. You should find any kind of size you want. When I can get on regular computer I can search easier. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-403071 Share on other sites More sharing options...
h67st Posted July 27, 2018 Author Share Posted July 27, 2018 I did find a place called Dowels Pins & Shafts in Florida that has them but they have a minimum order of 50 at $5.52 each so I didn't want to spend $275 for 2 dowels. Quote Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-403139 Share on other sites More sharing options...
Freightrain Posted July 27, 2018 Share Posted July 27, 2018 Yikes, ya I checked Mcmaster carr and they didn't have anything "cheap" to offer either. Man, I can't believe there isn't someplace to get something? Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-403148 Share on other sites More sharing options...
12V71 Posted July 27, 2018 Share Posted July 27, 2018 I have a machinist buddy that will make any size dowel from 4140 shaft stock. He has also done a few custom reaming jobs for me on site. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-403154 Share on other sites More sharing options...
h67st Posted July 29, 2018 Author Share Posted July 29, 2018 On 7/27/2018 at 3:49 PM, 12V71 said: I have a machinist buddy that will make any size dowel from 4140 shaft stock. He has also done a few custom reaming jobs for me on site. Have you done the dowel holes on a flywheel housing before? Can I just use a reamer with a jig to hold it square? Quote Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-403239 Share on other sites More sharing options...
41chevy Posted July 29, 2018 Share Posted July 29, 2018 On 7/24/2018 at 2:46 PM, h67st said: I am swapping a different flywheel housing onto my '58 673 because it had the shallow housing before and the duplex that mates to it has some issues. The housing is about .032" off center so I need to ream for larger dowels (the existing dowels are 5/8"). Does anyone know if I have to go to 3/4" dowels, or can I get something like .650"? I haven't been able to find anything but 3/4". metric 17mm equals .669. Many foreign trucks use them. Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-403251 Share on other sites More sharing options...
h67st Posted July 30, 2018 Author Share Posted July 30, 2018 On 7/28/2018 at 11:53 PM, 41chevy said: metric 17mm equals .669. Many foreign trucks use them. Any idea which manufacturers use them? Quote Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-403339 Share on other sites More sharing options...
41chevy Posted July 30, 2018 Share Posted July 30, 2018 1 hour ago, h67st said: Any idea which manufacturers use them? I'll get the info for you over the next day or so. I'll start with my parts guru at the Mack, Hino Volvo dealer. Paul Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-403341 Share on other sites More sharing options...
12V71 Posted July 30, 2018 Share Posted July 30, 2018 On 7/28/2018 at 6:50 PM, h67st said: Have you done the dowel holes on a flywheel housing before? Can I just use a reamer with a jig to hold it square? He has a jig for his reamer that bolts onto the housing. I let him make his own dowels and do the reaming to match. He has done 3 Cummins engines for me over the years. Quote Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-403356 Share on other sites More sharing options...
Popular Post h67st Posted August 16, 2018 Author Popular Post Share Posted August 16, 2018 (edited) Well, you guys steered me in the right direction...I gave up searching for larger dowels. I found a 21/32" reamer and drill bushing at McMaster Carr and took them to my local machine shop; they made me a guide out of 3/4 bar stock and made a couple of dowel pins that were .002" larger than the reamer. I pulled the old dowels and centered the housing (that was a pain). I bolted the jig up and reamed the holes (lined up perfectly); then I ran some emery cloth on a drill arbor in the flywheel housing holes so it would slide over the dowels without having to beat it on with a hammer. I tapped the dowels into the block and bolted everything together; total runout is now .001" so I am tickled pink. Don't laugh at my dial indicator setup; I had to make it out of "found items" in my shop (yes, the piece that's bolted to the crank is a CB antenna bracket). A very big "Thank you" to all you BMT guys! For some reason my photos are in reverse order...the top one is the finished product. Edited August 16, 2018 by h67st Added a comment 4 Quote Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-404195 Share on other sites More sharing options...
41chevy Posted August 16, 2018 Share Posted August 16, 2018 Those bell housing bolts drilled for safety wire? Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-404201 Share on other sites More sharing options...
terry Posted August 16, 2018 Share Posted August 16, 2018 Sometimes you have to improvise!. terry Quote Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-404207 Share on other sites More sharing options...
j hancock Posted August 16, 2018 Share Posted August 16, 2018 Nicely done! Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-404214 Share on other sites More sharing options...
Freightrain Posted August 16, 2018 Share Posted August 16, 2018 (edited) 13 hours ago, 41chevy said: Those bell housing bolts drilled for safety wire? Trying to remember if my 673 had wire on the bolts? I know they used castle nuts. Just as reference, a Rolls Royce 6 cyl motor had castle nuts on the rods. Pretty sure they used cotter pins. Glad that motor didn't see many RPM. This was a '55 Silver Cloud, picked it up in Florida back in very early 90's. Friend bought it, fixed the hole in the block and got it running. I inherited it when he passed in late 90's. Edited August 16, 2018 by Freightrain 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-404221 Share on other sites More sharing options...
mowerman Posted August 16, 2018 Share Posted August 16, 2018 I bought a five and a four out of a 55 b model gas job around 12 years ago for my DM diesel I suppose I will have issues when I try to put in as well...bobSent from my iPhone using Tapatalk Quote Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-404225 Share on other sites More sharing options...
41chevy Posted August 16, 2018 Share Posted August 16, 2018 (edited) 5 hours ago, Freightrain said: Trying to remember if my 673 had wire on the bolts? I know they used castle nuts. Just as reference, a Rolls Royce 6 cyl motor had castle nuts on the rods. Pretty sure they used cotter pins. Glad that motor didn't see many RPM. This was a '55 Silver Cloud, picked it up in Florida back in very early 90's. Friend bought it, fixed the hole in the block and got it running. I inherited it when he passed in late 90's. V=8 was 331 Caddie based In line is / was GMC 261 , later kicked up to 280 ci except cross flow head was GMC bottom end machined and assembled by R.R. All their 6, 8, class C diesels and V12s used Castile nuts . Their 4 speed auto was a 1950 51 GM Hydramatic pre park unit. The head on my 320 GMC in my 55chevy is a 1958 Bentley 6 cylinder cross flow head as good or better than the Wayne head. When I was still in high school I apprenticed at Raycor Rolls Royce, BMW, Rover. got to learn all the RR secrets of the time. Edited August 16, 2018 by 41chevy 1 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-404245 Share on other sites More sharing options...
h67st Posted August 17, 2018 Author Share Posted August 17, 2018 On 8/15/2018 at 10:19 PM, 41chevy said: Those bell housing bolts drilled for safety wire? Yes. And the flywheel-to-crank nuts had cotter pins in them. Quote Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-404266 Share on other sites More sharing options...
Freightrain Posted August 17, 2018 Share Posted August 17, 2018 (edited) Neat Paul. Friend bought this car, with blown motor. Seems motor was "Fresh", but if I recall a pin froze and the piston punched a hole in the block. Friend sleeved it(he had all the old school equipment at home), patched the side of the block and got it all running again. I won't say it was a great engine, but it ran. He drove it just a little, then realized there was no lube in the rearend and it starting howling, bad. Knowing what it would cost, I found a 9" ford housing from a buddies Torino that bolted in. Just had to change rims to match bolt pattern. The braking system on those cars are RIDICULOUS and this one was in very poor shape. I never did get the brakes working well enough to actually drive it again. Friend got ill and passed quickly. He had changed his will to give the car to me. It was too much of a project for me at the time and no place to work on it. I sold it. I wanted to keep the manual, but gave it to the new owner. It was actually written speaking to "The driver", not the owner of the car. It had more linkages and lube lines then you can even imagine and so much of it was in bad shape. But it was RH drive and maybe today I would have taken it on and got it running better. Now back to our regularly scheduled program....... Edited August 17, 2018 by Freightrain 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-404271 Share on other sites More sharing options...
41chevy Posted August 17, 2018 Share Posted August 17, 2018 The Bango rear was all 1938 and up Ford 1 ton mechanisticals, Bango was cast aluminum. Yeah brakes took a bit to understand. First thing we learned was if you back up, stopped and went forward you had zero brakes until the servo's rotated back to the forward mode. Learning that usually was accompanied by white knuckles and a loud Aw F$%K. 2 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-404310 Share on other sites More sharing options...
Freightrain Posted August 20, 2018 Share Posted August 20, 2018 Well, it surely looked like one. Never wooda thunk it was actually Ford parts on a Rolls. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/53886-flywheel-housing-alignment/#findComment-404506 Share on other sites More sharing options...
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