J-modding a 2001 4R70W - TCCoA Forums
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post #1 of 33 (permalink) Old 06-29-2010, 09:17 PM Thread Starter
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J-modding a 2001 4R70W

I've done at least 5 J-mods, but most of them have been on 95-97 4R's. What is different about the 2001 version that I need to know? I'm assuming the pistons and springs are already updated. Anything else I need to know?

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post #2 of 33 (permalink) Old 06-29-2010, 09:34 PM
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Originally Posted by Embalmer View Post
I've done at least 5 J-mods, but most of them have been on 95-97 4R's. What is different about the 2001 version that I need to know? I'm assuming the pistons and springs are already updated. Anything else I need to know?
Per Jerry W. regarding 1998- 4R70W's...

>Ignore what the article says and do this...
>
> Remove the bottom 1-2 accumulator spring and remove the bottom 2-3
> accumulator spring.
>
> For holes do this.
>
> Hole #2 is the intermediate clutch feed (1-2 shift). Make this hole in the
> .100"-.110" range. It should be .081" in your plate right now.
> Hole #10 is the reverse clutch feed. Totally optional. If you want it to
> engage into reverse faster when you move the lever, open this up to .093".
> Holes #4 & 5 are the direct clutch feed (2-3 shift). Open both of these
> holes up to .100"-.110".
> Holes #9 and 11 are the forward clutch feed (4-3/4-2 shift). Make both of
> these .100-.110" as well.
>
> So, it looks like you need a drill of around .100" and you should be good.
> When you open up holes 4&5 make sure the hole in the gasket between the
> separator plate and valve body casting, is large enough. These holes are a
> little small.
>
> jerry
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post #3 of 33 (permalink) Old 06-30-2010, 09:47 PM
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Holes 2, 4, 5, 9, & 11 use a 7/64 drill bit.
If you do hole #10(reverse) use 3/32 bit.

I should be doing the j-mod this weekend..I've read so much about it, I almost know it by memory now lol.
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post #4 of 33 (permalink) Old 06-30-2010, 10:05 PM
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That 7/64 is pretty close to the top of the spec, 0.109375. Drill bits have a tendency to make a hole larger than their size by 2 to 3 thousandths. If 7/64 is the general consensus, never mind. I would probably go with 2.5mm.
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post #5 of 33 (permalink) Old 07-01-2010, 12:55 AM
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Anyone done the above J-mod as outlined on a 2001 trans want to say if it's mild or wild or what ..... like how hard does this make it shift?

I have a '01 Mercury GM I'ld like to firm up next fluid change, but not make it harsh.

Has 2.73 (or 2.76, I forget the exact except it's geared high) rear gear.


Thanks ........

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post #6 of 33 (permalink) Old 07-01-2010, 02:54 PM
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From what I saw on 2001 VB using Jerry's Mild Specs you'll actually do VERY little on the 2001 Sep plate - Most of it is already done by Ford - I WOULD go thru the SONNAX Site thoroughly also for VB reccommendations - If you are going in there you might as well do it right - I agree with opinions that the LACK of the 3rd small round pac-man plate on the 2000+ VB leads to cross leaks in the VB ~!

http://www.sonnax.com/index.php

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Last edited by BUCK; 07-03-2010 at 11:38 PM.
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post #7 of 33 (permalink) Old 07-04-2010, 09:21 AM
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I just did the j-mod on Friday and wow! For one, it was very easy and I had nobody to help me.

Since I have a 99 I did have that 3rd circle plate, but that really does not affect anything at all, you, you just remove the 2 bolts like you do with the other two plates.

When going 25mph down my street you can feel a huge difference from stock. When accelerating hard, the tires chirp on the 1-2 shift just about every time. Since this is the first kind of 'shift kit' I've ever done, I personally would say it's kind of mild but still very much worth doing.
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post #8 of 33 (permalink) Old 07-04-2010, 09:33 AM
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It's the LACK of the 3rd small pac man Plate on the newer VB's that this Thread Title is about that can cause problems - Sonnax has Kit to put the small plate back in place but you make your own of course.

- I'd say most guys with true Mild JMOD settings & sticky tires would only see the occasional chirp like you describe - My Mild Settings with a tweaked D/Dog TC shifts silky smooth like stock if you are putting around under 2K RPM... above that Shifts Firm up noticeably & at WOT it shifts quick & solid.

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post #9 of 33 (permalink) Old 07-04-2010, 11:14 AM
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Third 4R70W Plate

Quote:
Originally Posted by BUCK View Post
It's the LACK of the 3rd small pac man Plate on the newer VB's that this Thread Title is about that can cause problems - Sonnax has Kit to put the small plate back in place but you make your own of course.

- I'd say most guys with true Mild JMOD settings & sticky tires would only see the occasional chirp like you describe - My Mild Settings with a tweaked D/Dog TC shifts silky smooth like stock if you are putting around under 2K RPM... above that Shifts Firm up noticeably & at WOT it shifts quick & solid.
Are you talking about this plate that applies to 2001-up 4R70W's?
http://www.sonnax.com/part_summary.php?id=5245&pl=1
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post #10 of 33 (permalink) Old 07-04-2010, 11:57 PM
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ABSOLUTELY ~!! - Been there, done that & have pix to prove it.

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post #11 of 33 (permalink) Old 08-13-2010, 02:16 AM
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Quote:
Originally Posted by BUCK View Post
From what I saw on 2001 VB using Jerry's Mild Specs you'll actually do VERY little on the 2001 Sep plate - Most of it is already done by Ford - I WOULD go thru the SONNAX Site thoroughly also for VB reccommendations - If you are going in there you might as well do it right - I agree with opinions that the LACK of the 3rd small round pac-man plate on the 2000+ VB leads to cross leaks in the VB ~!

http://www.sonnax.com/index.php
Thanks .... I have one of Robert's kits for my '95 Bird and after that I will do the Merc per above. Just been too hot to get excited about these jobs ....

A fine pair ... ... and whatever you do, Have a Safe Trip!
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post #12 of 33 (permalink) Old 08-14-2010, 09:08 PM
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i hear that... been around 115index here all week, but i finally got my bird back on the ground and im definatly feeling a diff with my F7 trans and Jmod with 1-2spring out. drove it for an hour though, havent really got to the WOT cuz im gonna drive like norm for a while, make sure everythings broke in real nice before i go and bust something :P

doubt ill get a chirp with my 245 60 15s though, think thats it, close to that, reall wide tread. might be a 65. i know i used the miata calculator and found the closest diameter and my speedo is just about spot on.
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post #13 of 33 (permalink) Old 08-26-2012, 02:50 AM
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Well, here it is 2012 and I'm trying to get that reinforcement plate kit for the valve body seperator plate and then the gaskets from Sonnax .... that kit 76507F-01K isn't listed in any of the distributor's sites that I can find.

A fine pair ... ... and whatever you do, Have a Safe Trip!
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post #14 of 33 (permalink) Old 08-26-2012, 12:41 PM
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Originally Posted by CrystalPistol View Post
Well, here it is 2012 and I'm trying to get that reinforcement plate kit for the valve body seperator plate and then the gaskets from Sonnax .... that kit 76507F-01K isn't listed in any of the distributor's sites that I can find.
Call Sonnax: 800-843-2600 802-463-9722
Or email: [email protected]

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post #15 of 33 (permalink) Old 08-26-2012, 05:31 PM
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Call Sonnax: 800-843-2600 802-463-9722
Or email: [email protected]
OH ... they will sell to me then? I'll call tomorrow .... Thanks.

A fine pair ... ... and whatever you do, Have a Safe Trip!
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post #16 of 33 (permalink) Old 08-26-2012, 07:03 PM
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OH ... they will sell to me then? I'll call tomorrow .... Thanks.
No problem. If they won't sell to you directly, I'm POSITIVE they will tell you where to get that item!

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post #17 of 33 (permalink) Old 09-22-2012, 10:06 AM
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Lightbulb Small Plate

One of our illustrious Vendors could just sell you the Small Plate & Fasteners fm an old dead Pre-2001 VB they have lying around the shop...

GET OFF MY LAWN~! ... & Let's not forget guys... There's still a dead Imaginary Ex-Girlfriend out there...
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post #18 of 33 (permalink) Old 12-23-2013, 06:27 PM
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Talk about procrastination .... today I was getting the '01 Mercury (referenced above) ready to carry us to Ga. for Christmas / New Years as we just have too much to carry to drive one of the T-Birds or the Mustang.

So, there I am .... pulled the car cover off the clean Merc, checked her fluids, looking at last oil change, etc (all good natch' ) .... and due to recent postings about intakes I suddenly (and inexplicably) start worrying about driving the Merc out of state with her OEM plastic X-over intake now (this being the same car I took to Utah and Az. in 08 ... same car that we spent 7,945 miles in over 21 days in 2006 touring out west .... same car that's never shown the slightest hickup) ... and then I thought about this transmission deal and wishing I had already done this as well.

Funny how some "small worry" get's stuck in one's head at odd times, perhaps it's "an omen"?

So I came in and did some research and now have the "PacMan" plate kit and gaskets to do the above J-Mod on the '01 4R70W all on order from Transmission Parts USA .... should be here when I get home!

Anyway, weather being questionable, the fact that we've put a few thousand on the Merc already this year, it also was used over last weekend a few hundred miles .... I just left it parked in it's carport spot all clean and dry and unhooked the battery and put the covers back on.

Decided to drive the "07 FX4 instead, it get's about 20-20.5 on the road so instead of using 40 gallons down and back, I'll use 50-52 instead.

Then, when I get back, I'll tackle this J-mod and swap on that '03 aluminum X-over PI intake .... and later in Spring slip on some new RS-As and be ready to take her for a May trip. She only has 76.5K on her clock.

Merry Christmas to you all!

A fine pair ... ... and whatever you do, Have a Safe Trip!
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post #19 of 33 (permalink) Old 12-23-2013, 06:56 PM
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The links to Sonnax no worky!

Joe

It's not a 97 Sport, it just looks like one!

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post #20 of 33 (permalink) Old 12-23-2013, 07:32 PM
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The links to Sonnax no worky!

Joe
sonnax.com worked for me!

Or are you talking about the 'pac-man' plates?
It's here: http://www.sonnax.com/parts/2375
Called the 'valve body stiffener plates for 2001- 4R70W' part # 76507F-01K

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post #21 of 33 (permalink) Old 12-23-2013, 07:33 PM
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sonnax.com worked for me!
The links above!

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post #22 of 33 (permalink) Old 12-23-2013, 07:37 PM
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The links above!

Joe
Yeh, I figured that, so I searched out the new ones !
I edited my first post above!

Merry Christmas, Joe!

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post #23 of 33 (permalink) Old 12-23-2013, 07:47 PM
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Yeh, I figured that, so I searched out the new ones !
I edited my first post above!

Merry Christmas, Joe!
I started going through the site, then gave up!

Thanks Rick, Merry Christmas to you and the family!

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post #24 of 33 (permalink) Old 12-24-2013, 03:23 PM
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I prefer to take the stiffner plate from early valvebodies and install it on late, you do have to grind it a little to clear the passage. I carry all of sonnax's products I just don't see the point of the gasket they use with their plate kit not that it really matters it doesn't hurt anything.
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post #25 of 33 (permalink) Old 12-24-2013, 09:53 PM
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I prefer to take the stiffner plate from early valvebodies and install it on late, you do have to grind it a little to clear the passage. I carry all of sonnax's products I just don't see the point of the gasket they use with their plate kit not that it really matters it doesn't hurt anything.
Alan
Thanks Alan ...... I'ld have been OK with a used one but didn't have it handy and did not want to pull the VB out of my '95 to look at it .....
..... and I figured if I didn't order it soon, I'ld put it back on that "back burner" too soon .... again.
So I just Googled "76507F-01K" and about the third response was the place I ordered from. I looked at the pics, it is correct.

I'll keep in mind what you say about the gasket ..... Thanks and ..... "Merry Christmas!"

A fine pair ... ... and whatever you do, Have a Safe Trip!
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post #26 of 33 (permalink) Old 12-24-2013, 10:26 PM
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You need a 6mmx1.0 tap the sonnax kit does not come with the tap. The drill guide I read says you need a #8 drill bit. What I did to come up with the right drill bit size was find one of the other holes in the valvebody the right size and find a drill bit that just barely fit in one of them. Transmission fluid makes a great lubricant for tapping aluminum.
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post #27 of 33 (permalink) Old 12-26-2013, 10:31 AM
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1/4-20 Tap & Fastener much easier to Tap "freehand" & much stronger Thread than Metric.

GET OFF MY LAWN~! ... & Let's not forget guys... There's still a dead Imaginary Ex-Girlfriend out there...
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post #28 of 33 (permalink) Old 12-26-2013, 08:31 PM
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10-4 Guys .... Thanks and ..... Happy New Years!

A fine pair ... ... and whatever you do, Have a Safe Trip!
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post #29 of 33 (permalink) Old 07-04-2014, 05:50 PM
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Talk about procrastination .... today I ... etc ...
Today, July 4th, 2014 .... I was getting the 2001 Mercury Grand Marquis ready for a trip to Georgia next week, took it to town for state inspection (it was covered up, it expired in May, so I made a appointment) and as I was driving, I was thinking about the J-mod I want to do .... so when I got home I got to looking around in my shop .... I had the trans filter, had about 30 quarts Mercon V on the shelf, had the box with the Sonnax #76507F-01K reinforcement plate kit (see http://forums.tccoa.com/showthread.php?t=142615, about post 12-13 for "why") and VB gaskets ..... and car has 76,545 miles .... about 30K on current fluid .... so I got her done today.

Last time I changed fluid I had installed a drain bolt so draining went easy. Used my tall black plastic like ramps, all went smoothly.

I had taps on hand for both 6mm-1.0 metric as well as 1/4-20 SAE ... I used the metric as the bolt heads were 10mm like them other plates use. I drilled and tapped holes before taking VB apart for separator plate mods. Just like instructions say, I used a 5/16" drill to "polish" dimples and create a center, then I used the drill bit that matched the tap (forget size, it came with the tap when I bought it years ago) and drilled through all the way on a drill press using a oak block that's squared up as back up .... then I sprayed some 2+2 on it and blew with air to blow chips away before opening the VB up (the holes are in solid parts).

Once I separated VB from separator plate, then I drilled new holes in separator plate to 1/4" to clear bolts ..... and used grease on tap as I tapped threads so chips stayed with tap. Then I made sure .... absolutely sure... that no errant chips were in the recesses of the VB.

Then ..... I did exactly this:
Quote:
Per Jerry W. regarding 1998- 4R70W's...

>Ignore what the article says and do this...
>
> Remove the bottom 1-2 accumulator spring and remove the bottom 2-3
> accumulator spring.
>
> For holes do this.
>
> Hole #2 is the intermediate clutch feed (1-2 shift). Make this hole in the
> .100"-.110" range. It should be .081" in your plate right now.
> Hole #10 is the reverse clutch feed. Totally optional. If you want it to
> engage into reverse faster when you move the lever, open this up to .093".
> Holes #4 & 5 are the direct clutch feed (2-3 shift). Open both of these
> holes up to .100"-.110".
> Holes #9 and 11 are the forward clutch feed (4-3/4-2 shift). Make both of
> these .100-.110" as well.
>
> So, it looks like you need a drill of around .100" and you should be good.
> When you open up holes 4&5 make sure the hole in the gasket between the
> separator plate and valve body casting, is large enough. These holes are a
> little small.
>
> jerry
I cleaned my separator plate, used a sharpie to mark holes, checked them several times, and then ...
... I used a new 3/32 bit (that's 0.09375") for hole #10 ...
... and a new 7/64 bit (that's 0.109375") for holes # 2, 4, 5, 9, & 11.
Chamfered with chamfer bit held in hand. Checked my new gaskets that I had ordered with the Sonnax kit .... picked the right one
.... and did just slightly enlarge one of the holes (4 or 5 as I recall) as one was smallish .... and reassembled and reinstalled using my in lbs. torque wrench.

This car has stock 4.6 with only change being the factory dual exhaust and no resonators (has mufflers) and 2.76 highway gearing.

Now instead of just a change in engine rpm and sound as she accelerates and changes gears ..... NOW you can actually feel a good "nudge" when she changes at part throttle. I tried a WOT shift, it shifts noticeably harder than before but the 2.73 gears subdue it so it should not break traction.

Did take 10 quarts of fluid though .... but she's not overfull. I measured all that drained in the process, I caught most of it .... 9-1/2 quarts of old fluid in two jugs for the recycle container .... and I lost a very slight bit to spillage and wiping away with a rag.

Edit July 13, 2014:

Added details above .... am now looking back after 600 plus miles getting down to Georgia .... performed flawlessly all the way, loaded up, etc ...

I'm happy.

A fine pair ... ... and whatever you do, Have a Safe Trip!

Last edited by CrystalPistol; 07-18-2014 at 08:01 PM.
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post #30 of 33 (permalink) Old 07-16-2014, 08:48 PM
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I maybe should add a few details ....

Of course, a drain plug is helpful. This is one I added first time I did the fluid and filter on the Merc maybe 9-10 years ago. I now install the drain in the rear angled wall of the drop down part ....






(I have one prepped for my '95 T-bird which I'll swap over to with new style filter when next I do it.)



They are easy to fabricate with minimal welding. I cut a piece of 1/8" X 1" steel and drill two 1/4" holes for internal mounting and a center hole I tap for 1/2-20 threads. Then I weld a 1/2-20 nut using a bolt to align the threads .... and clean it with a tap. Then drill the three holes and mount to pan.



On to the details I wanted to add ....

When I pulled my VB out from under the car there was a small black framed plastic screen with a closed end with rubber bumper on it laying on top.



I wasn't sure where it came from .... so I searched. It fits large open end up in a similar shaped hole towards the front left (driver's) side .... wear safety glasses to protect eyes when looking.



Clean area well with brake clean and just before you reinstall the VB .... stick the small black framed filter in place with a heavy dose of Vaseline around the edges .... once the VB is in place it presses against the bumper and holds it in place.

Here's a picture of the area where that new plate goes to reinforce the separator plate. See the mark in the center where the 2-3 Accumulator Cover has hit ...



On the later 4R70Ws where the plate was eliminated Ford did add a boss in the VB underneath the separator plate to back it up. I have seen the older transmissions like my '95 Tbird's 4R70W does not have that half circular boss about half way between the two holes I drilled and tapped and it's dead center under where that 2-3 retainer contacts.



Here I was just checking hole center to center and filed one hole a little bit, but in use the notch in the plate would be at 12 o'clock in this picture, except there would also be a gasket and separator plate between them. That's an exhaust feed I think.



I plumb forgot to take a picture of the VB assembled after the mods with the reinforcement plate in place, but I lined the notch of the new plate with the hole seen in the pic above.
The screen thing was laying just like that .... I guess it fell like that.

Lastly ..... remember this picture ..... shows linkage detail and that roller on the springy arm that creates "detents".




Maybe it helps someone else?



A fine pair ... ... and whatever you do, Have a Safe Trip!

Last edited by CrystalPistol; 07-16-2014 at 08:53 PM.
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