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Hi there, I am new here and am a Longchamp owner for 22 years.It is a 1975er and has the # 2103.
After long and sometimes very confusing search for the right flexplate(here they are:Pioneer FRA 202 or ATP Z-110 both 164teeth and 28 oz.)
Iam now on the search of the right starter motor. I think that the last starter was wrong and therefore messed up the teeth of the flexplate. It must be of course a starter for the 351 C with the C6 transmission.
Is there anyone who could help me and tell me what starter will fit for 100%. Thanks a lot in advance and best wishes from Germany
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Walt2103, first you need to measure the depth from the Starter mounting surface to the Ring Gear (flexplate) there are two types: a) with 3/8"(10mm) depth and b) with 3/4"(19mm) They are not interchangeable!

And please tell me which parts are new??? Did you change/replace anything since it worked the last time???

What about the Sheet metal plate between your 351c and the Transmission, is it present?

Jan
Thanks a lot for the prompt relies. Depth from starter mounting to the flexplate is 3/4"(19mm). My automatic never had a mounting sheet metal spacer. I haven`t changed or replaced anything exept after the motor didn`t start and the starter did only this horrible and very loud scratching sound without moving anything I replaced it with a refurbished starter. This one survived only for six or seven start procedures. After that not only the teeth of the starter where destroyed ca.2mm but also some flexplate teeth lost their lifes.
Now that I have ordered the "right" new flexplate I am looking for the "right" starter to avoid another horrible surprise. Do you have any idea what starter will fit or where that sudden problem of this not engaging starter could come from? Now the Motor is seperated from the trans and I could take the best look on the parts.
Thanks a lot in advance
Ford Performance Parts M-11000-B51 - Ford Racing Starters
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Starter, Super Hi-torque, 1.4 kw., Small Diameter, Ford, 289/302/351W/351C, Automatic Transmisson, Each

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Goodroc, I thought you meant a seperate sheet metal plate that should be put between starter and engine block. I was a little bit confused because if I would put another sheet as a spacer between starter and block the starter wouldn`t engage at all. The starters teeth are obviously not deep enough in the teeth of the flexplate. I`ll send a photo of the damaged teeth of the starter in a minute (kb-reduction). On the photo below you`ll see the plate and the damaged teeth of the flexplate.

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Walt2103, you obviously have the Plate between Block and Transmission. If you remove the Transmission from the Engine (Important leave the Converter on the Transmission) and then temporarily mount your starter on the Sheet metal plate you should be able to push the Drive out and inspect why its not engaging properly. On your Starter first remove the Cap covering the Electro Magnet for the Drive throw out and you are able to manually pry the Drive out to its full extend simulating the throw out!

On the Photo were you measure the Ring Gear/Flex Plate it looks like you are measuring to the Back Side of the Ring Gear? It is from the Starter mounting Surface to the Ring Gear on the Engine (forward) side you must measure approximately 19mm!

Also the Tooths on the Starter Sprocket has a Wedge shape to secure smooth engagement. If they are damaged you must either replace the Drive or remove the Drive from the Starter and Grind them carefully with an Angle Grinder to restore the Wedge shape.

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goodroc, thanks for your hints and advices. As I have mentioned in my first "forum-question-mail" I have already ordered a new flexplate. Still looking for the original combination of starter and flexplate. Just the way the car was constructed. That`s also why I would prefer to leave the external solenoid as it is. I like when my car keeps its originality as much as possible. A friend of mine has a Bronco 78` and gave me a brand new starter that looks exactly like my old one - only main wire goes in the back of the starter and not to the side. The starter is called D-3152. I`ll check if it fits on monday the way you told me to check it (remove the cover etc.). Then I have found at Summit SUM-G1611-B this one looks exactly like the Bronco Starter. I wonder if anyone has bought and installed one of those into the Longchamp as described. Perhaps they are identical - just different numbers.
The Bronco starter D-3152 does not fit.
The right starter for my Longchamp is the Powermaster starter 3124.
Summary: flexplate Pioneer FRA 202 or ATP Z-110
(164 teeth, 28 oz.)works together with Powermaster starter 3124 im my car which is a Longchamp 1975 (#2103), 351 Cleveland with C6 transmission. Thanks again to you all who gave me their friendly support. I hope that I could help other Longchamp owners with my short summary too.
I am curious.

Is the 351C installed in your 1975 Longchamp sourced from the US (a Q code 4V Cleveland) or is it sourced from Australia?

If from Australia, this may explain the parts difficulty. However I can provide some additional input.

I don't believe Australia had a C6 transmission. That was a transmission US Ford developed for its large displacement V8 engines. So a 351C sourced from Australia, if the flex plate & starter were Australian, may have employed 'adapters' to work with the North American C6.

Back in North America there were two iterations of the 351C 4V equipped with a C6 transmission.

In 1971 the 351 4V (the M code engine) was equipped with a C6 having a specific modulator valve, and a relatively low rpm stall torque converter (rated about 1500 to 1800 rpm).

In 1972 through 1974 the 351 CJ, 351 GT, or 351 4V (all Q code engines) were equipped with a C6 transmission having a different modulator valve, and a higher stall speed torque converter (rated about 2800 to 3000 rpm).

If the engine was Australian, the question would be which North American parts had it been adapted to work with? 1971 or 1972 - 1974? If you acquire the proper parts all designed for the same engine, they shall mesh together properly.

Just to complete the picture a bit better, here in North America, all 1970 351C engines mated to automatic transmissions were mated to FMX transmissions; in 1971 through 1974 only the 351C 2V engines (H code) mated to automatic transmissions were mated to FMX transmissions. I apologize I don't have information regarding Australian drive train ... but I would love to learn from an Aussie who could fill in that gap. Smiler

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