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Old 01-29-2008, 07:20 AM
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MustangII power rack and pinion question

I've got an older mustangII power rack and pinion ifs on the 39 plymouth I'm re-rebuilding. It appears that the seals are leaking around the rubber boots on the ends of the piece. I asked a local Les Schwab guy, the place I get the front end alignments done, if he could rebuild the unit and he said no. Heidts has rebuilt/remanufactured units for sale. Is this unit something that can be rebuilt? Or do I have to buy a new one?

One other question. I saw one advertised on ebay and it stated that the mounting holes were 15 1/2" from center. The unit I have the holes are 16" apart. I'm pretty sure mine is an older model, 73 -78. Is that the only difference between the older models and the newer ones?
Thanks
EZ

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Old 01-29-2008, 11:09 AM
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Some years ago I put that setup in a 56 Studebaker. I took the rack from the 76 Mustang II and went to the parts store a bout a rebuilt on to replace it. It wasn't that expensive (back then, anyway).
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Old 01-29-2008, 08:54 PM
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I've discovered that it is probably beyond my capabilities to rebuild that rack and pinion unit myself. I've found several places on the internet to purchase one. I've also discovered that the 75 - 78 years have 16" between the mounting holes and later models are 15 1/2". Thanks for your help and information.
EZ
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Old 01-30-2008, 12:16 AM
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There is a FORD Special Service Tool Kit that has the neccessary tools for the rebuild. Barring that, you need to source a quality rebuild that has stainless steel inserts at the spool valve and output shafts. MOOG would be one.
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Old 01-31-2008, 06:20 PM
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The earlier Power racks had slightly quicker steering, like 2 turns from stop to stop. The 77-78 had 2 1/2 turns stop to stop. Also, the early racks used flare fittings and B nuts and the later used a crimped line with O ring so you have to match hoses as well. I have not run into any differences in distance between mounting points. Some racks have a 3rd hole for use on cars besides the M ll, but don't remember much about it. I have found a big difference in rebuilt unit prices and have been told there are only a couple of companies that rebuild the units in large quantity. Auto Zone has always been the cheapest for me and have not had any problems with the 4 or 5 I have installed on various cars.

We have rebuilt some power steering units by ordering the repair kits. My Bud is a master tool and dye maker and we have the lathe and milling machine to make the special tools to do the job. I would never attempt to rebuild a power rack without good instructions, specs and schematics available.

Trees
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Old 02-01-2008, 07:14 AM
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Thanks, that was useful information. I found 74 - 77 power rack and pinions for $160 from autopartswarehouse.com. I'm a little dubious that it will fit, but the rep I talked to was pretty sure of himself. By the way, I found a place on the internet, autopartsgiant.com, that carried them as well. When I called the rep asked what year and make of car I had. When I started to explain that it was a '39 Plymouth running a MII ifs he hung up on me. I thought it was a mistake but when I called back another rep did it too. I wouldn't recommend anyone trying to buy custom fitted parts from them.

Thanks for all of your help!
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Old 02-01-2008, 07:31 AM
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If the unit is leaking...find the local rebuilder that does power steering pumps & gearboxes.......bet he can reman your unit.
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