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By rgrove - 9 Years Ago
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Hello all,
A long time ago, I converted the Y-Block in my 56 sunliner to a 1-wire alternator. That alternator just pooped out, and I want to install a powermaster alternator that looks like a generator.
After searching on line for a few hours and going through my parts books however, I have a few questions. Im hoping for some quick answers, please, as I would like to order the parts monday or tuesday to be able to install this weekend.- What are the differences between generators for Thunderbirds and passenger cars? Is it just amps? Are they the same dimensionally? Im asking because powermaster has different several listings for ford swing mount and Thunderbird applications, and they all list the same output, but some have different pulley widths. Ill contact them tomorrow, but didnt know if there is any real difference in size? I know I need a 1/2" pulley, but are they otherwise the same?
- I dont have the mounting brackets from the generator anymore, so I have to find replacements. Are the 3 mounting bracket parts the same between passenger cars and thunderbirds? I know there is a waterpump/fan spacer for thunderbirds, but is the rest of the mounting bracketry the same? One parts catalog has parts for the T-Bird, but doesnt show them applying to passenger cars, but they have missed cross reference parts before. The parts books I have list the parts as 10151A, 10156A, and 10145 for each of the 3 parts, but dont show different part numbers for the t-bird vs passenger car.
- Im assuming 1/2" wide belts are correct? The car has always had them, even before we restored it, so Im assuming its correct?
Thanks in advance for any help or guidance!
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By Lou - 9 Years Ago
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Passenger car and T-bird generators do not mount the same,
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By rgrove - 9 Years Ago
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Argh... I was afraid of that. Any idea about the pickup truck mounting, and if its the same?
Is it just the brackets that are different, or is the generator itself different on the T-Bird?
Looks like I need to find some used brackets asap...
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By charliemccraney - 9 Years Ago
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Truck and the other car brackets are the same, very common and easy to find. Post a wanted ad in classifieds and you'll probably find them in no time.
I don't know about differences in the generators but if they list one specifically for your application, then you should be ok to order that. A 1/2" belt is correct for some Y-Blocks. I don't know if it is a year cut off or some other determination. An easy way to tell if the appropriate belt is being used is to see how it fits in the pulley groove. The belt should be approximately flush with the od of the pulley. If it is significantly recessed or protruding, then it is probably an incorrect combination. My thought is that it will be ok to use a 3/8' belt in a 1/2" pulley as long as it does not bottom out in the groove but maybe that is an incorrect assumption.
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By rgrove - 9 Years Ago
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Great, thanks for the info. Very helpful.
I just found a bracket set on ebay for a reasonable price. It was listed as just a Y-block, but knowing that all the bracketed ones are interchangeable helped very much.
Im assuming Ill stick with the 1/2" belts; the belts I have now sit flush and seat properly in all the pulleys, so Ill stick with that.
Thanks again!
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By Lou - 9 Years Ago
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Belts changed in early 1956 , went from 1/2 inch to 3/8 , generators for t-bird and car are the same.
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By paul2748 - 9 Years Ago
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One difference in the generators between a sedan and the TBird is the front pulley. The TBird pulley is much shallower than the sedan (doesn't stick out as far).
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By slumlord444 - 9 Years Ago
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The rear end plate on the Bird generator is different. The studs for the wires are in different locations than the passenger car.
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By rgrove - 9 Years Ago
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Thanks everyone. One last question; what size is the bolt that connects the lower adjustment arm to the timing chain cover? Any help would be appreciated, as Im making the list to go into town to the hardware store.
Thanks!
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By paul2748 - 9 Years Ago
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I believe that the bolt is 3/8 coarse thread, about 1 inch long.
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By Ted - 9 Years Ago
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rgrove (5/16/2016)
....I'm assuming 1/2" wide belts are correct? The car has always had them, even before we restored it, so Im assuming its correct?
The ’57 and newer models with Y-Blocks used the 3/8” belt. ’56 and earlier models used the ½” belt. The belt size at the damper will dictate which belt width should be used as dampers did get changed out with engine swaps without much regard to the year model to which they belonged.
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By rgrove - 9 Years Ago
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THanks again for everyones input. Is the lower mounting arm (the one with the adjustment slot) supposed to have a bend in it for an offset? THe mounting brackets I bought off ebayhas a flat adjusting bracket, and it doesnt line up, so Im guessing that its supposed to have an offset?
Would a set like this fit? It lists it as fitting 58-64 Ford cars and pickups.
http://www.ebay.com/itm/58-59-60-61-62-63-64-FORD-CAR-PICKUP-TRUCK-Y-BLOCK-272-292-V8-GENERATOR-BRACKETS-/141940056621?hash=item210c49622d:g:utMAAOSwBnVW9X-H&vxp=mtr
Also, it looks like the guy I talked to at Powermaster may have been wrong about which alternator for the application. He said the passenger car should use the t-bird alternator, but as someone else here mentioned the output stud is clocked differently. As a result, on the passenger car it ends up at about the 6 oclock position...
This is turning into a much bigger PITA than I thought it would...
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By carl - 9 Years Ago
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rgrove (5/21/2016)
THanks again for everyones input. Is the lower mounting arm (the one with the adjustment slot) supposed to have a bend in it for an offset? THe mounting brackets I bought off ebayhas a flat adjusting bracket, and it doesnt line up, so Im guessing that its supposed to have an offset? Would a set like this fit? It lists it as fitting 58-64 Ford cars and pickups. http://www.ebay.com/itm/58-59-60-61-62-63-64-FORD-CAR-PICKUP-TRUCK-Y-BLOCK-272-292-V8-GENERATOR-BRACKETS-/141940056621?hash=item210c49622d:g:utMAAOSwBnVW9X-H&vxp=mtrAlso, it looks like the guy I talked to at Powermaster may have been wrong about which alternator for the application. He said the passenger car should use the t-bird alternator, but as someone else here mentioned the output stud is clocked differently. As a result, on the passenger car it ends up at about the 6 oclock position... This is turning into a much bigger PITA than I thought it would...
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By rgrove - 9 Years Ago
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Carl, thanks for reaching out! Dont know how I missed your note, but I just replied by PM. I also included my email address if thats easier.
THANK YOU!!!!
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By carl - 9 Years Ago
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Ron Have you thought about just bending the bracket you bought to get the proper offset,I will e mail you later Carl
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By rgrove - 9 Years Ago
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carl (5/22/2016)
Ron Have you thought about just bending the bracket you bought to get the proper offset,I will e mail you later Carl
Carl,
Yes, I thought about bending it, but its pretty thick and would be tough to do. I also thought about using spacers or something, but at the end of the day, the car is restored to a pretty high level, so Id rather use the "right" parts where possible. Also, I kind of like knowing its put back together the way Ford intended wherever possible.
Ill look for your email; it would be great if we could connect/figure it out today, as Im hoping to get whatever brackets I need bought today so Ill have them next weekend to get this wrapped up.
Thanks!
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By Genuinerod - 9 Years Ago
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There are several generator bracket assy.(four) on ebay under ford y block engine. Might be worth a look.
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