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#3055626 - 02/09/16 02:39 PM J Mod on 2011 CVPI
j262byuu1 Offline
n00b

Registered: 10/07/15
Posts: 33
Loc: Saint Louis, MO
Just did the J mod today. Sorry no pics since I want to finish the J Mod asap in a snow day..

I used the J mod kit bought from 88grandmarq which included a Super Tuff pre-drilled separator plate, a Sonnax Overdrive Servo Regulator (http://www.sonnax.com/parts/2402-overdrive-servo-regulator), a Sonnax Boost Valve (http://www.sonnax.com/parts/2393-boost-valve-kit) and some other stuff (filter, gasket...). Also I bought 12 qt Mercon LV from ford dealer ($5.1*12=$61.2, cheaper than Amazon) and I used 10 qt.

I did not remove any of the springs (1-2 and 2-3). The result is awesome, the 1-2 and 2-3 shifts firm but not harsh. OD is firmer than before but not uncomfortable.

The most challenging thing was doing J mod in a snow day..My hands were almost frozen. However I'm happy with the result. By doing the J mod I know that my transmission (actually valve body) is in good condition.

Overall, very happy. Thanks 88grandmarq!


Edited by j262byuu1 (02/09/16 02:58 PM)
_________________________
2011 CVPI, 120K, 1568 idle hours, NHP unit.

BH1976 Headlight relay upgrade, LCM Bypass, full LED conversion

If you lives near St.Louis I can turn off you dark car mode ...

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#3056490 - 02/09/16 09:09 PM Re: J Mod on 2011 CVPI [Re: j262byuu1]
88grandmarq Offline

4R70W rebuilder
Poobah

Registered: 07/10/02
Posts: 6832
Loc: Indiana
glad it worked out.
_________________________
2011 P7B - retired Jay county Indiana Sheriffs car
2003 Lincoln Town Car Signature - 3.27 RAR, dual exhaust and J-mod - SOLD 09/2011
89 Crown Victoria LX- HPP Box - SOLD 09/2010
88 Grand Marquis LS - The original - Totaled 5/2006

I rebuild AODE/4R70W/4R75E Transmissions, check out my Facebook page for my latest project; https://www.facebook.com/Ford-transmission-repairs-Jmod-348414635312478/

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#3056810 - 02/09/16 11:53 PM Re: J Mod on 2011 CVPI [Re: j262byuu1]
09mnsp Offline
Over the Hill

Registered: 11/08/11
Posts: 1703
Loc: Minnesota, U.S.
Nice!
_________________________
09 P71
Custom tubular rear control arms by Tink, ADTR sway bars by Eibach, Lowered, Detroit Trutrac/Motive 4.30, J-modded, Circle D multi disc 3600-3700 stall, OBX LT's and 2.5" X-pipe, 2.5" Dynomax ultraflows into 3" mandrel bent tail pipes, HI Tech stage2 cams, Dragon Oval Plenum/60mm GT500 TB, Steeda Underdrives, Dyno Tuned By APSAutoworks 281rwhp/297rwtq

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#3057786 - 02/10/16 12:30 PM Re: J Mod on 2011 CVPI [Re: j262byuu1]
88grandmarq Offline

4R70W rebuilder
Poobah

Registered: 07/10/02
Posts: 6832
Loc: Indiana
Originally Posted By j262byuu1
Just did the J mod today. Sorry no pics since I want to finish the J Mod asap in a snow day..

I used the J mod kit bought from 88grandmarq which included a Super Tuff pre-drilled separator plate, a Sonnax Overdrive Servo Regulator (http://www.sonnax.com/parts/2402-overdrive-servo-regulator), a Sonnax Boost Valve (http://www.sonnax.com/parts/2393-boost-valve-kit) and some other stuff (filter, gasket...). Also I bought 12 qt Mercon LV from ford dealer ($5.1*12=$61.2, cheaper than Amazon) and I used 10 qt.

I did not remove any of the springs (1-2 and 2-3). The result is awesome, the 1-2 and 2-3 shifts firm but not harsh. OD is firmer than before but not uncomfortable.

The most challenging thing was doing J mod in a snow day..My hands were almost frozen. However I'm happy with the result. By doing the J mod I know that my transmission (actually valve body) is in good condition.

Overall, very happy. Thanks 88grandmarq!


I was going to make a post about this, but since the vehicle owner beat me to it, i will expand on his post.

OP contacted me in December about a Jmod on his car. Originally we were going to meet in person and I do the work, but our schedules didnt allow for this. Instead, I shipped the parts for him to install. Parts included in the kit I shipped; pre-drilled Superior Tuff plate, new sonnax shift valves, new gaskets and filter. He requested the transmission shift firmly, so several of the holes were drilled larger than normal.

Hole 1 - .160
Hole 2 - .113"
Hole 3 - .180"
Hole 4&5 - .116"
Hole 6 - .161"
Hole 7 - .093"
hole 8 - Not used
hole 9&11 - .125"
hole 10 - .093"





Ford updated the pressure regulator valve in 2010, which eliminates the wear normally seen on older valve bodies. in this case the Sonnax replacement valve is not needed on 2010 or 2011 valve bodies


Since holes 4&5 and being drilled larger than .093" its is necessary to open the hole in the gasket to match the new larger hole. I use a hollow punch for this.


_________________________
2011 P7B - retired Jay county Indiana Sheriffs car
2003 Lincoln Town Car Signature - 3.27 RAR, dual exhaust and J-mod - SOLD 09/2011
89 Crown Victoria LX- HPP Box - SOLD 09/2010
88 Grand Marquis LS - The original - Totaled 5/2006

I rebuild AODE/4R70W/4R75E Transmissions, check out my Facebook page for my latest project; https://www.facebook.com/Ford-transmission-repairs-Jmod-348414635312478/

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#3059138 - 02/11/16 09:55 AM Re: J Mod on 2011 CVPI [Re: j262byuu1]
88grandmarq Offline

4R70W rebuilder
Poobah

Registered: 07/10/02
Posts: 6832
Loc: Indiana
here is the missing picture from my post earlier.

_________________________
2011 P7B - retired Jay county Indiana Sheriffs car
2003 Lincoln Town Car Signature - 3.27 RAR, dual exhaust and J-mod - SOLD 09/2011
89 Crown Victoria LX- HPP Box - SOLD 09/2010
88 Grand Marquis LS - The original - Totaled 5/2006

I rebuild AODE/4R70W/4R75E Transmissions, check out my Facebook page for my latest project; https://www.facebook.com/Ford-transmission-repairs-Jmod-348414635312478/

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#3060578 - 02/11/16 11:50 PM Re: J Mod on 2011 CVPI [Re: 88grandmarq]
09mnsp Offline
Over the Hill

Registered: 11/08/11
Posts: 1703
Loc: Minnesota, U.S.
What do you use to sand/deburr the plate after drilling it? That plate is so thick that it leaves more material to clean up than when drilling an oem plate.
_________________________
09 P71
Custom tubular rear control arms by Tink, ADTR sway bars by Eibach, Lowered, Detroit Trutrac/Motive 4.30, J-modded, Circle D multi disc 3600-3700 stall, OBX LT's and 2.5" X-pipe, 2.5" Dynomax ultraflows into 3" mandrel bent tail pipes, HI Tech stage2 cams, Dragon Oval Plenum/60mm GT500 TB, Steeda Underdrives, Dyno Tuned By APSAutoworks 281rwhp/297rwtq

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#3061177 - 02/12/16 09:56 AM Re: J Mod on 2011 CVPI [Re: 09mnsp]
88grandmarq Offline

4R70W rebuilder
Poobah

Registered: 07/10/02
Posts: 6832
Loc: Indiana
Originally Posted By 09mnsp
What do you use to sand/deburr the plate after drilling it? That plate is so thick that it leaves more material to clean up than when drilling an oem plate.


i use an air powered sanding tool with a 2" disc. makes quick work of deburring the holes
_________________________
2011 P7B - retired Jay county Indiana Sheriffs car
2003 Lincoln Town Car Signature - 3.27 RAR, dual exhaust and J-mod - SOLD 09/2011
89 Crown Victoria LX- HPP Box - SOLD 09/2010
88 Grand Marquis LS - The original - Totaled 5/2006

I rebuild AODE/4R70W/4R75E Transmissions, check out my Facebook page for my latest project; https://www.facebook.com/Ford-transmission-repairs-Jmod-348414635312478/

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#3062241 - 02/12/16 11:28 PM Re: J Mod on 2011 CVPI [Re: j262byuu1]
deezdrama Offline
Member

Registered: 12/04/12
Posts: 362
Loc: central il
I thought I read that 05 and newer p71's pretty much had the jmod done stock. Or that the newer vics wouldnt benefit from the mod as much as the older vics.
Is this true?

I got the gaskets hanging in my garage from a few years ago but never did it on my 07.....
Im buying a 2010 p71 in the morning and wondering if the jmod would be worth the effort?
_________________________

imgurl
<<<2007 Crown Vic P71>>>
175k
Precision Industries Stallion Torque Converter, New Ford Racing PI Intake, Polished plenum, Cat delete/duals/Thrush 2 chambers/3.5" tips, 18" Bullitt rims, 5% tint all around

<<<2010 White P71>>>
105k
15% tint, blacked door pillars, marauder corner lamps, HID projector headlights, 18" staggered Bullitts..... work in progress

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#3064249 - 02/14/16 04:06 AM Re: J Mod on 2011 CVPI [Re: deezdrama]
88grandmarq Offline

4R70W rebuilder
Poobah

Registered: 07/10/02
Posts: 6832
Loc: Indiana
Originally Posted By deezdrama
I thought I read that 05 and newer p71's pretty much had the jmod done stock. Or that the newer vics wouldnt benefit from the mod as much as the older vics.
Is this true?

I got the gaskets hanging in my garage from a few years ago but never did it on my 07.....
Im buying a 2010 p71 in the morning and wondering if the jmod would be worth the effort?


completely un-true. all of these transmissions benefit from the Jmod. Some of the holes in the plate on the 2004 and up transmissions are already larger from the factory, but not all of them. all of these transmissions suffer from pressure loss in the valve body from worn pressure regulator valves and wear on the factory separator plate where the 2-3 accumulator presses against the plate. doing the Jmod, replacing he separator plate and replacing the shift valves eliminates the pressure leaks and makes the transmission shift better. 2005 and up transmissions have better EPC solenoid, so it already has more pressure. For a stock vehicle I typically drill hole 2 for the 1-2 shift smaller and drill hole 4&5 and 9&11 larger than what the Jmod spec calls for. From my experience, this creates a crisp, consistent shift with out being annoying
_________________________
2011 P7B - retired Jay county Indiana Sheriffs car
2003 Lincoln Town Car Signature - 3.27 RAR, dual exhaust and J-mod - SOLD 09/2011
89 Crown Victoria LX- HPP Box - SOLD 09/2010
88 Grand Marquis LS - The original - Totaled 5/2006

I rebuild AODE/4R70W/4R75E Transmissions, check out my Facebook page for my latest project; https://www.facebook.com/Ford-transmission-repairs-Jmod-348414635312478/

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