J-mod installation-6 to 7 hours?!?! - TCCoA Forums
 
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post #1 of 22 (permalink) Old 01-04-2007, 06:16 PM Thread Starter
 
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J-mod installation-6 to 7 hours?!?!

I just went through the tech mods and it seems that the J-mod takes 6-7 hours, is that correct? My mechainc gets $50./hour and at that cost it is not practical for me to do! Did I read that correctly? Thanks, mark
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post #2 of 22 (permalink) Old 01-04-2007, 06:28 PM
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With a modded valve body it took me around 3 hours or so .
I went slow.

Maybe if you do the whole tranny .

1997 Ford Thunderbird 4.6 Sport .

60'...... 2.06
1/8th .. 9.194
mph .... 77.13

mods*
PI heads *PI intake*Mark VIII torque converter*Cobra T-loc w\4.10's * Jmod*tranny fluid cooler*P&P stock T/B & plenum*UD pulleys* Dynotech 4in ds*80mm Lightning maf*Xcal2*02 GT intake tube.
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post #3 of 22 (permalink) Old 01-04-2007, 06:29 PM
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6-7 hours if you do it yourself, I doubt it would take a good mechanic that long.

Current rides: 09 CTS-V (went to dark side) & GSXR-1000

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post #4 of 22 (permalink) Old 01-04-2007, 06:32 PM
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However, having done a J-Mod myself, you CAN do it yourself. I had never so much as cracked a transmission open before doing a J-Mod. But the instructions are so precise, and so detailed that its very difficult to get it wrong. And if you do have any questions, there are many folks here who can answer them. This reduces the cost of a J-mod considerably.


1997 Thunderbird Sport
Low Miles
Wifes Car
destined to remain stock

1997 T-Bird GT 4.6
80 MM Mustang GT MAF - P&P'd Mustang GT TB and Intake Plenum - PI Intake manifold - PI Heads
Mark VIII Torque Converter - J-Modded 4R70W transmission - Mark VIII Aluminum Driveshaft - 3.73 gears
PBR Brake Calipers - Eibach Springs - KYB Shocks
'89 SuperCoupe front and rear sway bars
SCT Chip programmed by Lonnie Doll
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True Dual exhaust with Magnaflow DI/DO muffler
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post #5 of 22 (permalink) Old 01-04-2007, 06:57 PM
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Its really not that hard... its just a good idea to take your time and do everything right the first time. Anyone who can pick up a ratchet and drill a hole can do it.
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post #6 of 22 (permalink) Old 01-04-2007, 07:41 PM
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how big of a diffrence does this really make??
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post #7 of 22 (permalink) Old 01-04-2007, 07:45 PM
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Enough to make it worth lying on my back in the driveway, getting old Tranny Fluid all over me, busting my knuckles, and maybe getting pinched by a C-clip, just to make it shift quck, crisp, and clean.

And to Bark 2nd gear.

Seriously, it is definitely worth the effort. Nice quick, clean, shifts and improved durability.


1997 Thunderbird Sport
Low Miles
Wifes Car
destined to remain stock

1997 T-Bird GT 4.6
80 MM Mustang GT MAF - P&P'd Mustang GT TB and Intake Plenum - PI Intake manifold - PI Heads
Mark VIII Torque Converter - J-Modded 4R70W transmission - Mark VIII Aluminum Driveshaft - 3.73 gears
PBR Brake Calipers - Eibach Springs - KYB Shocks
'89 SuperCoupe front and rear sway bars
SCT Chip programmed by Lonnie Doll
255/50/16 Falken Ziex ZE-512's
True Dual exhaust with Magnaflow DI/DO muffler
<<< SOLD >>>
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post #8 of 22 (permalink) Old 01-04-2007, 08:11 PM
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As Traveler said, not only does the jmod save your tranny, but it also makes you car more fun to drive, as long as you don't mind a little jerk and tire chirp between gears. :-)

Current rides: 09 CTS-V (went to dark side) & GSXR-1000

Still miss her: http://www.cardomain.com/ride/2304264/1
Unknown 4.6L Vortech V1, 42# injectors, 255lph fuel pump, 90MM MAF
3200 Stall DirtyDog TC, 3.73's w/ trac lok, MMX drive shaft
SCP True dual exhaust, J Mod, tranny cooler, 17" Cobra R's,
ADDCO front and rear sway bars, Koni Shocks, Sport Springs & poly bushings
DBRUS Dual Piston Front Calipers w/ 13" Drilled & Slotted pwdr coated rotors
Xenon grfx, Reverse gauges, 97 Console, Dual DVD player,
JL Audio & Pioneer speakers, Hifonics amps, 1 farad Cap, Monster cable, etc.
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post #9 of 22 (permalink) Old 01-04-2007, 08:29 PM
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Definately considering this. Of course I have a tired 1994 vintage tranny and I may be pouring good money after bad.

Worst current problem is a Loooong 3-4 overlap.

http://images19.fotki.com/v358/photo...Tbird01-vi.jpg
1994 White (WT) TBird - 4.6 L SOHC with 4R70W

"Sir, if you were my husband, I would poison your drink."
-Lady Astor to Winston Churchill
"Madam, if you were my wife, I would drink it."
-His reply

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post #10 of 22 (permalink) Old 01-04-2007, 08:36 PM
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I would guess if you have good snap ring pliers and you don't have to fight with that (if you check/replace/remove the 1-2 accumulator and or spring) and you have everything you need ready, and are not installing a cooler, you can do it in 2 or 3 hours, and that is a lot of do nothing time, letting the tranny drip, cleaning up the main control (but not dumping out the check balls or the small filter) and fiddling around.

I let mine sit overnight, I got an extra quart or so that dripped out of it, but to drop the pan, remove the filter, unplug the wiring, remove the main control, seperate the plate, drill the holes, remove the the 1-2 accumulator and replace it and the springs and put it back in, fight with the 2-3 accumulator, replace the plate, install the main control, plug in electrical, install filter and pan, there isn't much to it.

Some things you will fight with possibly besides the 1-2 accumulator (I put in a new piston and both new springs, you leave the one out from the documentation and it way easier) are making sure that you get the stepped shaft (I can't think of its name right now) in the proper place, and cleaning up after the Mercon shower (I have to find a better shampoo for it).

I installed a tranny cooler at the same time, and had to make a couple of trips for fittings for that, remove the radiator and other things, and I think I only had 5 hours into it all. I wasn't out to see how fast I could do it, and it was all new to me, but with all the documentation and pictures, it was easy. I used a sharpie to mark the holes, started with the smaller ones and triple checked everything I did.

To have someone "install" it, get a seperator place and the accumulator pistons and springs and have someone do it, I would guess they would charge 2 hours labor, maybe three. If you don't need the pistons then return them.

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post #11 of 22 (permalink) Old 01-04-2007, 09:49 PM
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i like doing it my self because you never know if the shop will torque all your bolt properly.

for the valvebody bolts i went thru the sequence 3 times and the fourth time to make sure evrything is in torque spec. then on the next fluid change i rechecked the torque setting again.

My daily job is to fry rice for my customers....

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post #12 of 22 (permalink) Old 01-05-2007, 07:16 AM Thread Starter
 
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Thanks guys. I would have a pro do it as my body is not worth very much. I thought I read 7-8 and at $50/hr. That would make it a mod to skip. Mark
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post #13 of 22 (permalink) Old 01-05-2007, 07:34 AM
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darrin sells modded valvebodies. so all you would have to do is drop out your old one, swap the accumulator pistons and put the new one it. very very easy.
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post #14 of 22 (permalink) Old 01-05-2007, 07:54 AM
 
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good mechanic should not take more than 2 hours tops...mine said it would take him 1.5
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post #15 of 22 (permalink) Old 01-05-2007, 09:56 AM
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Quote:
Originally Posted by sleepinggt
good mechanic should not take more than 2 hours tops...mine said it would take him 1.5
Yea the only reason this takes long is the drain times.

"It's all in the reflexes"
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post #16 of 22 (permalink) Old 01-05-2007, 10:23 AM
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Quote:
Originally Posted by Bangster
.......I let mine sit overnight, I got an extra quart or so that dripped out of it........
Thats one of the better ideas I've seen about the J-mod. Seems like no matter how long you let it drain after dropping the pan, when you pull the valve body you're going to get a drenching, and then the valve body still has fluid in it. There is NO neat way to do this!


1997 Thunderbird Sport
Low Miles
Wifes Car
destined to remain stock

1997 T-Bird GT 4.6
80 MM Mustang GT MAF - P&P'd Mustang GT TB and Intake Plenum - PI Intake manifold - PI Heads
Mark VIII Torque Converter - J-Modded 4R70W transmission - Mark VIII Aluminum Driveshaft - 3.73 gears
PBR Brake Calipers - Eibach Springs - KYB Shocks
'89 SuperCoupe front and rear sway bars
SCT Chip programmed by Lonnie Doll
255/50/16 Falken Ziex ZE-512's
True Dual exhaust with Magnaflow DI/DO muffler
<<< SOLD >>>
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post #17 of 22 (permalink) Old 01-05-2007, 03:22 PM
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do it yourselllfff. I hadnt even done my own oil change yet and I did the J-mod WITH the help of some of the Michigan guys!! The details are insane...you can't go wrong.

2.25" True Dual Catless DI/DO Magnaflow Exhaust, Eibach Springs, Addco 1 3/8", J-mod, Viper 791 Alarm, Clarion 855 full color touch-screen, Directed 2400 amp , 2 12" CV Strokers with a custom ported box, K&N air filter, 180* T-Stat, Xcal2 SCT TUNED BY LONNIE 17 x 7.5 (245/45/17) Chrome Cobra R's, 17x9 in back(275/40/17)
DOHC sitting in the garage
Teksid 2v plans?!?!
Tranny Cooler, Dual Remote Oil Filter waiting for install
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post #18 of 22 (permalink) Old 01-06-2007, 04:56 AM
 
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Quote:
Originally Posted by DScruggs
Definately considering this. Of course I have a tired 1994 vintage tranny and I may be pouring good money after bad.

Worst current problem is a Loooong 3-4 overlap.
wouldnt attempt it with a stock 94 trans if its over 100K
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post #19 of 22 (permalink) Old 01-06-2007, 07:30 AM
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Quote:
Originally Posted by 94V8Thunderbird
wouldnt attempt it with a stock 94 trans if its over 100K
OK. I am interested to know why? In other words is it likey to accelerate failure? Is it likely to not work as advertised?

Remember my situation. Tranny has some specific problems, primarily lazy, slow 3-4 shift. I will be bracket racing this car and already plant to get a built tranny within a year or so.

The trans I have now was rebuilt (stock rebuild) by a half decent ATRA shop about 2 years (20,000) ago. I do not know if the case used was the original or a donor.

Also since we are talking about labor hours how many hours does it take to R & R converter. I have swapped many converters over the year w/o pulling trans completely out. Feasable here?

http://images19.fotki.com/v358/photo...Tbird01-vi.jpg
1994 White (WT) TBird - 4.6 L SOHC with 4R70W

"Sir, if you were my husband, I would poison your drink."
-Lady Astor to Winston Churchill
"Madam, if you were my wife, I would drink it."
-His reply

Rehab progress link
Today's Progress
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post #20 of 22 (permalink) Old 01-06-2007, 11:03 AM
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when they rebuilt it do they rebuilt it with a transgo shift kit too?

My daily job is to fry rice for my customers....

My Bird is the nicest looking in Midland, Michigan

CarDomain Page

Every success are only archieveable through many mistake and that's the learning process.

Anyone looking for EBC Greenstuff front pads for non-sport front brakes?
brand new for $70 bucks shipped to your door within 48 states within United States.
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post #21 of 22 (permalink) Old 01-06-2007, 11:11 AM
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Quote:
Originally Posted by DScruggs

Also since we are talking about labor hours how many hours does it take to R & R converter. I have swapped many converters over the year w/o pulling trans completely out. Feasable here?
Removing the engine is not a faster substitue for removing the transmission. Since the torque converter bolts to the engine and goes into the transmission one or the other must be removed.
Alan

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post #22 of 22 (permalink) Old 01-06-2007, 11:18 AM
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Really?

News to me. Usually I unbolt the tranny. Move the tranny jack back a foot or so. R&R the converter and bolt the tranny back up. Rarely do I have to pull the tranny out to change a converter.

I would never dream of pulling the engine to change the converter.

Quote:
Originally Posted by Casper
when they rebuilt it do they rebuilt it with a transgo shift kit too?
No. I was a standard, old lady driver commercial rebuild.

I have the Invoice

1 AODE Master OH Kit $229.95
1 RF60 Torque Converter $195.00
1 Used Case $60.00 (Might Check casting number)
1 Sprag & Race Kit $61.20 (Duh!)
1 Bushing & Washer Kit $ 39.95
1 AODE Trans Band $42.50
12 Quarts Trans Fluid $24.50 (There is the damn problem)

Parts total $743.10

http://images19.fotki.com/v358/photo...Tbird01-vi.jpg
1994 White (WT) TBird - 4.6 L SOHC with 4R70W

"Sir, if you were my husband, I would poison your drink."
-Lady Astor to Winston Churchill
"Madam, if you were my wife, I would drink it."
-His reply

Rehab progress link
Today's Progress

Last edited by DScruggs; 01-06-2007 at 11:24 AM.
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