Differential Modification Project

feel the need to change or modify your mutt? This is the place to discuss it.

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Differential Modification Project

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Differential Modification Project

Postby Mr. Recovery » May 18th, 2015, 3:36 pm

I am gearing up to try a differential mod/replacement, at this point I am just gathering parts to start the project. Today I picked up 2, 04-08 Mazda RX 8 rears, they are takeouts that have appx 50 miles on them from new cars delivered to a racing school in Sebring Fl. :) I will post all info when I start on this.

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1967?? M151 MFD By Ford Motor Co?? SOLD
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Re: Differential Modification Project

Postby rickf » May 18th, 2015, 4:40 pm

What gears are in them? Are they limited slip?
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1967 M416
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12/1952 M100- Departed
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Re: Differential Modification Project

Postby rickf » May 18th, 2015, 4:42 pm

And what will you do for the front? It will be turning reversed.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
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Re: Differential Modification Project

Postby Mr. Recovery » May 18th, 2015, 8:13 pm

rickf wrote:What gears are in them? Are they limited slip?


Don't know the gear setup at this time, this is to be determined but, I am sure there are many combination's available, I was told they are locking diff, this also will be determined when I start the project. :)

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1960 M151 Run 1
1963 M151 Willys DoD 10-63 in Baltimore
1967?? M151 MFD By Ford Motor Co?? SOLD
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Re: Differential Modification Project

Postby Mr. Recovery » May 18th, 2015, 8:21 pm

rickf wrote:And what will you do for the front? It will be turning reversed.


This will also be determined when I start, I may be wrong but, I think a old ford Bronco/Ranger 4x4 had a reverse turning gear set.

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1963 M151 Willys DoD 10-63 in Baltimore
1967?? M151 MFD By Ford Motor Co?? SOLD
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Re: Differential Modification Project

Postby rickf » May 19th, 2015, 9:02 am

Vehicles with a transfer case reverse the direction of the front drive shaft. A m151 turns the same direction straight through. The m151 diff is fed from either end so you can use the same rotation, the diff is always looking the same way. Early Fords had a high pinion diff which was called a reversed gear but in fact it was not.
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1984 M1008
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12/1952 M100- Departed
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Re: Differential Modification Project

Postby Mr. Recovery » May 19th, 2015, 4:08 pm

Like I said, it is a project. I'll deal with it as I come to it. :)

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1967?? M151 MFD By Ford Motor Co?? SOLD
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Re: Differential Modification Project

Postby sherwan_88 » May 20th, 2015, 1:23 am

Good day Dan,

The RX-8 diffs are a good choice.
Are these out of a Automatic or a Manual car?

I'm keen to see how you do it and how it goes.

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Re: Differential Modification Project

Postby Mr. Recovery » May 24th, 2015, 3:24 pm

sherwan_88 wrote:Good day Dan,

The RX-8 diffs are a good choice.
Are these out of a Automatic or a Manual car?

I'm keen to see how you do it and how it goes.

Regards


Hello sherwan, I don't know at this point, I was just looking for a nice compact diff housing to try and adapt under my 151 and didn't even ask :roll: I got them for less then $100.00 for the pair so not much will be lost if it don't work out, I'll call the guy I got them from and see if the school told him.


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1960 M151 Run 1
1963 M151 Willys DoD 10-63 in Baltimore
1967?? M151 MFD By Ford Motor Co?? SOLD
NRA Life Member
American Legion Post 275 Fl
US Army 6 years 2nd Armored Cavalry Bindlach Germany
Colorado Army Nat. Guard 5 years
Md Air Guard 15 years active duty on C-130's
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Re: Differential Modification Project

Postby rickf » May 24th, 2015, 7:13 pm

You are going to have to source a couple sets of axles and pinions for them also. And probably cut off drive shafts to adapt to for power input.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
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Re: Differential Modification Project

Postby Mr. Recovery » May 25th, 2015, 9:23 am

rickf wrote:You are going to have to source a couple sets of axles and pinions for them also. And probably cut off drive shafts to adapt to for power input.


Ya, I am thinking the axle shafts for sure and, as I like to make this stuff a quick change back to stock I'll most likely use one of my xtra drive shafts for the mod work. :roll:

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1960 M151 Run 1
1963 M151 Willys DoD 10-63 in Baltimore
1967?? M151 MFD By Ford Motor Co?? SOLD
NRA Life Member
American Legion Post 275 Fl
US Army 6 years 2nd Armored Cavalry Bindlach Germany
Colorado Army Nat. Guard 5 years
Md Air Guard 15 years active duty on C-130's
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Re: Differential Modification Project

Postby svramselaar » June 26th, 2015, 2:24 am

hi

wen i look for the gear ratio the mutt has 4.86 : 1

the RX 8 Mazda has manual 4.44:1
bud there are also diffs with
3.9:1
4.10: 1
4.30 :1
4.77 :1
5.125 :1

with the 4.44: 1 it will be faster bud less power
the gear 4.77:1 will be the best

success george
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Re: Differential Modification Project

Postby Mr. Recovery » June 26th, 2015, 9:38 am

Thanks George, I'll get into it soon and let you know what I have. 8)

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1960 M151 Run 1
1963 M151 Willys DoD 10-63 in Baltimore
1967?? M151 MFD By Ford Motor Co?? SOLD
NRA Life Member
American Legion Post 275 Fl
US Army 6 years 2nd Armored Cavalry Bindlach Germany
Colorado Army Nat. Guard 5 years
Md Air Guard 15 years active duty on C-130's
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Re: Differential Modification Project

Postby m75 » December 6th, 2015, 6:01 pm

Any progress on this differential project?
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Re: Differential Modification Project

Postby rickf » December 6th, 2015, 7:59 pm

He is waiting for cold weather. Oh, that's right, he lives in Fla. :lol: :lol: :twisted: :twisted:
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
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