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Classic Mustangs Tech Forum

Technical discussions specific to 1964-1967, 1968-1970, and 1971-1973 Classic Mustang. Discuss all tech related to in-line six cylinder and V8 powered Vintage Mustangs here.

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Unread 10-20-2009   #1 (permalink)
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Default 1968 Mustang replacing starter: high torque or original?

I'm planning to install a new starter in my 289 coupe because it's not getting enough power to start, especially when the engine's hot. Should I get a "new original" one, or one with higher (e.g. Powermaster 90 ft./lbs) torque rating? I'm worried I might ruin the engine with the higher torque rating, but don't want to run into the problem of not having enough torque with the original... Which one should I get? Thanks for the advice!
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Unread 10-20-2009   #2 (permalink)
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Is your motor stock? If so the stock starter will work just fine and save the money. Are you sure that it is not your battery or bad cables or connections? If you are planning to do some serious engine upgrades I would go with the high torque, I did on my 67 coupe when I installed my crate motor. The starter will not ruin the engine unless you get the wrong one Ie. proper offset for your specific set up. I'm using a PMW-9604 powermaster from summit. It fits a 164 tooth 1972 belhousing manual trans. It was expensive but I'm cranking a 302 motor with about 362HP and didn't want problems later with heat issues from my headers. It is smaller and does not take up as much as a stock starter.HTH
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Unread 10-20-2009   #3 (permalink)
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I put a high-torque mini starter in my 65 from Autozone.
I highly recommend it! It saves space and leaves plenty of clearance for things like headers...

It is quite energetic when I hit the key.

I think I looked up a 93 Mustang GT and selected that one.
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Unread 10-20-2009   #4 (permalink)
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I put a Jegs mini hi torque starter on mine. Sure like the extra clearance it gives for my headers.
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Unread 10-21-2009   #5 (permalink)
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A good reason to go with a newer design starter is the fact that you have eliminated the need to use battery power to energize the wire wound electro magnets used in the old style starters. The reason that the old starters used electro magnets is that the technology at that time didn't have the ability to economically produce permanent magnets that could deliver the required magnetic field to produce the starter's desired torque. The newer starter's additional internal gear reduction also contributes to producing more torque with less battery drain.

Do yourself and your battery a favor and upgrade to the newer more compact starter. An OE starter of the newer design should work just fine for most street applications. Even if a high torque aftermarket starter were to be used, there will be no negative effect on the engine. It will just turn over easier. I will not use an older electro magnet starter unless I were concerned about period correctness. Get rid of that problematic overweight antique.
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Unread 10-21-2009   #6 (permalink)
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I just did this today, and will never look back. My old starter died and I replaced it with one for a 95 Mustang 5.0 The rewiring is simple and the only thing extra I had to do was shim the starter out with a couple of flat washers. The starter was engaging so much that it sounded like there was drag on the flex plate, so I shimmed the starter out and now it sounds perfect. My next project is getting rid of the Fred Flintstone brakes, and installing something that will actually stop me when and where I want to stop.
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Unread 10-21-2009   #7 (permalink)
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Yes, I changed mine out for the Ford Racing Mini Starter.

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Unread 10-22-2009   #8 (permalink)
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Default 1968 Mustang replacing starter: high torque or original?

Quote:
Originally Posted by dv068 View Post
I'm planning to install a new starter in my 289 coupe because it's not getting enough power to start, especially when the engine's hot. Should I get a "new original" one, or one with higher (e.g. Powermaster 90 ft./lbs) torque rating? I'm worried I might ruin the engine with the higher torque rating, but don't want to run into the problem of not having enough torque with the original... Which one should I get? Thanks for the advice!
Hello dv068,
First hello from "Meffa". Medford , Mass LOL

I like the mini starters and agree that it is a good idea.
The only question I have is what is the timing set at?

If the timing is too far advanced it gets hard to crank especially when hot.

Just something to check.
Perhaps I'll see you at a cruise night

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Unread 10-22-2009   #9 (permalink)
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i have a high torque mini starter from powermaster which has not given me any problems it cranks easier and better than the original not only is it smaller but mine also adjust 360 degrees so that you can adjust the solenoid part where ever.
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Unread 10-23-2009   #10 (permalink)
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Ranger1, I think that the reason that you had to shim your OE Ford starter is that you have the wrong starter for the transmission type. The difference in them deals with the depth of the gear on the starter end. Since the washers worked for you, that's great.
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Unread 10-23-2009   #11 (permalink)
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Greek,
The starter is supposed to fit the auto tranny model, which is what I have. I may not have had to shim it, but it certainly sounds better shimmed vs unshimmed.
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