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post #1 of 17 (permalink) Old 01-31-2007, 07:56 PM Thread Starter
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j mod

has any one done the j modon the 4 r70w mustang trans? if so what size bits do you need. they are on the tech articals but they are in descimals and i dont no how to convert them to fractions. i was bad at math. Any help would be great. don

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post #2 of 17 (permalink) Old 01-31-2007, 09:37 PM
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google is thy friend Don.

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post #3 of 17 (permalink) Old 01-31-2007, 09:54 PM
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I would guess there are a large number of Mustangs with 4R70Ws that have been JModed.

If it is a post 1997 one or 2000 or newer than most of the information here isn't as relevent as it is for us, you need to find an updated one (since other than the 98 Mark VIII 97 was the last year for these cars). There is a document floating around on crownvic.net for 2000+ cars.

All the sizes listed for all levels and holes are commonly available bits, you don't need to convert them to fractional, you can get them in the decimal/numbered size. Obviously some of the exact decimal ones (0.125- 1/8) you would get 1/8, but the numbered ones like 20 and 3 you can get singly or in a big ol box o'bits. I found them all at Graingers, and almost ordered them when I went to my moms shop and they had this 3 feet tall by 20 feet wide wooden/glass display of thousands of bits, multiples per fractional/decimal/numbered sizes and just got them from her. I have the bag of them next to me now!

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post #4 of 17 (permalink) Old 02-02-2007, 09:01 AM
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don, i have jmodded an '01 before. i have the bits for the 300-450 hp range, but i dont know the sizes off the top of my head.

you're bad at math? did you struggle in english, too?

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post #5 of 17 (permalink) Old 02-02-2007, 09:30 PM
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Quote:
Originally Posted by warmaster259
google is thy friend Don.
McMaster-Carr is your other friend. Get the bits from them, cheap, quick, via mail order, and in the correct sizes. Home Depot and Lowes aren't goin to have the exact sizes.

Depends on what year Mustang you're doing. I did "the mod" to a 94 GT with the AOD-E. The article covers those as well.

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post #6 of 17 (permalink) Old 02-03-2007, 10:31 PM Thread Starter
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well i got it except for the one your sopose to make an oval. any one no where it is or number and size? thanks for the help so far. don

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post #7 of 17 (permalink) Old 02-04-2007, 12:03 AM
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Quote:
Originally Posted by terraplane8
McMaster-Carr is your other friend.
I meant about converting metric to SAE.

Jim

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post #8 of 17 (permalink) Old 02-04-2007, 12:47 PM Thread Starter
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i dident need to convert it to sae, it was in sae. i need to convert it to fractons

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post #9 of 17 (permalink) Old 02-04-2007, 12:48 PM Thread Starter
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still could use help, if any one knows whats going on.

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post #10 of 17 (permalink) Old 02-04-2007, 06:41 PM
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There is no oval drill bit use a die grinder or dremel tool.
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post #11 of 17 (permalink) Old 02-04-2007, 07:07 PM Thread Starter
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yeah i no but i dont no what bit to use and and where to drill it.

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post #12 of 17 (permalink) Old 02-04-2007, 08:27 PM
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Use the gasket as a template.
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post #13 of 17 (permalink) Old 02-04-2007, 09:24 PM Thread Starter
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so you just drill it round the same size as the hole, or do you make it an oval the size of the hole? sorry for all the ?s but i want to do it right. thanks don

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post #14 of 17 (permalink) Old 02-05-2007, 10:00 PM
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USE the gasket as a template, make the hole look like the hole in the gasket.
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post #15 of 17 (permalink) Old 02-06-2007, 01:48 PM Thread Starter
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which hole are you soposed to make oval?

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post #16 of 17 (permalink) Old 02-06-2007, 02:23 PM
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I dunno, If all else fails read the instructions. You are making this alot more complicated than it has to be.
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post #17 of 17 (permalink) Old 02-06-2007, 02:24 PM
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I did the mild settings, so I didn't change the "slot" shown for the "OD Server exhaust" and reading about it I didn't change it (I didn't follow all the mild settings, some I varied because I hate stuff like the 13 seconds to engage reverse and the 2 mph manual first gear selection).

I don't think this particular one matters, but I don't remember you stating what year tranny it is and what settings you are doing. in addition to making the slot bigger you need to open up the size of the slot in the gasket. I don't know if it is just a gasket change or not, I doubt it but I could be wrong.

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97 Mark VIII LSC/Silver/Gray leather
97 Cougar 4.6 Sport/White Opalescent Tricoat Metallic /Gray leather down but not out?
89 Cougar LS 3.8/Oxford White/Gray velour/HG need replaced AGAIN
00 Grand Marquis LS/Vibrant White/Gray velour
63 Falcon 302/black and rust/shed isn't moving
82 F-150/Oxford White/dumb VV carb doesn't pass emissions
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