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post #1 of 16 (permalink) Old 06-18-2011, 01:10 PM Thread Starter
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JMod done finally!

Well after hearing of yet another death in the family(this one is hard to grasp a hold of) and hearing my father has a cyst or something at the lower part of his brain that the doctors are now examining, I had to get my mind off of things so I decided it was time to get the JMod done in the bird. Working on cars seems to get my mind off of the bad **** that happens.

I started around 4pm and finished it around 10:30pm in my driveway under halogen light. I was determined to get it all back together before I went to bed. I wasnt able to test it out till this morning because I underestimated how much fluid the trans bled out once the VB was dropped. I have the RobertP mild kit and I must say that it DEFINATELY feels TONS better. 1-2 shift is nice and snappy, 2-3 is much snappier and there seems to be less slop in the trans. Downshifts seem nicer as well.

Once I filled it up this morning, I took it on a run, first locally giving the pcm some time to 'relearn' the trans. I'm sure if it was not necessary, but whenever I make changes that have anything to do with the PCM, I like to give the pcm some time to recalibrate itself. I know a tune will make it all the more better though. After a decent drive and a full warmup I got it on the highway and it seems like it pulls better as well at highway speeds. It went from 60-95 pretty damn quick Definately quicker than it did before.

The hardest part of the whole job is dicking around with that snap ring on the 1-2 accumulator. Everything else was fairly simple doing it under the car, other than my arms and neck being sore . I'll have to get better videos later when people get where they are going by me. I live at the beach so getting a good vid is hard when people are "sunday driving".

For those of you who did this, roughly how much trans fluid did you have to put back in, if you didnt drain the converter? I did a service about 4K miles ago, so I didnt feel the need to have to drain the converter again.

John
1996 TBird LX 4.6
2001 Sable Wagon 3.0 Duratec
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post #2 of 16 (permalink) Old 06-18-2011, 01:35 PM
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Indeed it's lke having a NEW car when you start with our mushy 96 setups - & Sorry to hear about your recent news.

GET OFF MY LAWN~! ... & Let's not forget guys... There's still a dead Imaginary Ex-Girlfriend out there...
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post #3 of 16 (permalink) Old 06-18-2011, 01:41 PM
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Good deal anywhere from 7-9 qts, just depends on the time the vb was off and how much fluid actually drained from the tc, this is good reading as I lay here after knee surgery on Thursday I'm pretty much gotta take it easy I'm so bored

Robert

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post #4 of 16 (permalink) Old 06-18-2011, 02:00 PM Thread Starter
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I was able to get a somewhat better than what I had vid....

Before...





After





I'm not really ragging on it cause I cant with all the traffic here today.

John
1996 TBird LX 4.6
2001 Sable Wagon 3.0 Duratec
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post #5 of 16 (permalink) Old 06-18-2011, 02:28 PM
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Originally Posted by sousa632 View Post
The hardest part of the whole job is dicking around with that snap ring on the 1-2 accumulator.
Amen!

So far I have done the J-mod on the T-bird and a friend's T-bird, however I did replace the accumulator pistons in the Mark 8 earlier this spring. I wasn't able to find the set of snap ring pliers I had used previously so I tried to make do with the smaller sets around the house. Big mistake! 2 hours later I just said "heck with it" and bought the biggest set I could find at the local parts place. Ten minutes later I get the ring and retainer out to find that someone had already replaced the 1-2 piston...

At least I'll be good to go when I tackle the trans on the Cougar later this year.

-Brandon
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post #6 of 16 (permalink) Old 06-18-2011, 09:40 PM
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So your able to do the mod with the tranny bolted in place?
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post #7 of 16 (permalink) Old 06-18-2011, 10:02 PM
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Yes this is a bolt on if interested in a kit let me know I've got one complete kit left with parts on order

Robert

www.robstireandauto.com for all your car needs and parts
95 bird corn powered 735rwhp and 580 tq
86 bird vortech s trim
10.75 @128.38
95 bird - Vortech t trim
9.98 worlds fastest IRS 4.6 thunderbird
1/8 [email protected]
10.11 @ 139.19 best mph
1.47 best 60ft if I can get a full pass with this 60ftt
All made possible with Braincoating'ôs ported manifolds
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post #8 of 16 (permalink) Old 06-18-2011, 10:28 PM
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Did you replace the OD & reverse servos? I've been looking into the mod and since my car is so stock I'm thinking I won't bother with those. I'll just stick to the springs and accumulators (& drilling holes of course).

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post #9 of 16 (permalink) Old 06-19-2011, 05:04 AM
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Good job John!

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post #10 of 16 (permalink) Old 06-19-2011, 06:49 AM
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Originally Posted by Swanny View Post
Did you replace the OD & reverse servos? I've been looking into the mod and since my car is so stock I'm thinking I won't bother with those. I'll just stick to the springs and accumulators (& drilling holes of course).
Most people don't bother with the OD and reverse servos since they don't typically cause problems. I think I ran across only one person during all my research prior to my J-mods that actually undertook them.

-Brandon
97 Laser Red Thunderbird LX 162k, Stage 2 4.6L 2v N/A | 300 BHP (255 RWHP, 290 RWTQ) | 13.95 @ 97.58 | Build details | Pics at the Lorain Assembly plant
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post #11 of 16 (permalink) Old 06-19-2011, 07:57 AM Thread Starter
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Quote:
Originally Posted by Swanny View Post
Did you replace the OD & reverse servos? I've been looking into the mod and since my car is so stock I'm thinking I won't bother with those. I'll just stick to the springs and accumulators (& drilling holes of course).
No I didnt do those. I just stuck to the accumulators, springs, and modified seperator plate.

John
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post #12 of 16 (permalink) Old 06-19-2011, 09:20 AM
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The overdrive servo and reverse servo is a waste the reverse servo is the same one used since 1980, the overdrive servo got .2 larger but unless u got s built trans stock is fine

Robert

www.robstireandauto.com for all your car needs and parts
95 bird corn powered 735rwhp and 580 tq
86 bird vortech s trim
10.75 @128.38
95 bird - Vortech t trim
9.98 worlds fastest IRS 4.6 thunderbird
1/8 [email protected]
10.11 @ 139.19 best mph
1.47 best 60ft if I can get a full pass with this 60ftt
All made possible with Braincoating'ôs ported manifolds
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post #13 of 16 (permalink) Old 06-19-2011, 10:36 AM
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So RobertP, what level of Jmod would you say mine is, out of curiosity?

Yeah, my trans lost about 9-10 qts of fluid. I had brought 8 qts down with me when RobertP did my Jmod. We had to add another 2 qts or something like that.

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post #14 of 16 (permalink) Old 06-20-2011, 11:06 AM
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Quote:
Originally Posted by RobertP View Post
The overdrive servo and reverse servo is a waste the reverse servo is the same one used since 1980, the overdrive servo got .2 larger but unless u got s built trans stock is fineRobert
I agree & if you screw up on OD Servo Swap you'll be dropping Tranny ~! - It;s doable but there's a risk.

- The Reverse Servo is easy & you CAN make a case to drop that just to clean out debris that collects above it.

GET OFF MY LAWN~! ... & Let's not forget guys... There's still a dead Imaginary Ex-Girlfriend out there...
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post #15 of 16 (permalink) Old 06-20-2011, 11:15 AM
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Talking STIFF 1-2 Springs

Quote:
Originally Posted by theterminator93 View Post
I did replace the accumulator pistons in the Mark 8 earlier this spring. I wasn't able to find the set of snap ring pliers I had used previously so I tried to make do with the smaller sets around the house. Big mistake! 2 hours later I just said "heck with it" and bought the biggest set I could find at the local parts place. Ten minutes later I get the ring and retainer out to find that someone had already replaced the 1-2piston... .
Yeah MK has some stupid long STIFF 1-2 Springs in it Stock so that stuff JUMPS outa there ~!


GET OFF MY LAWN~! ... & Let's not forget guys... There's still a dead Imaginary Ex-Girlfriend out there...

Last edited by BUCK; 06-20-2011 at 11:25 AM.
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post #16 of 16 (permalink) Old 06-20-2011, 12:37 PM
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Yours was a 300-450

And buck is correct u gotta make sure u get the band applied which can be done from the bottom but very tough

www.robstireandauto.com for all your car needs and parts
95 bird corn powered 735rwhp and 580 tq
86 bird vortech s trim
10.75 @128.38
95 bird - Vortech t trim
9.98 worlds fastest IRS 4.6 thunderbird
1/8 [email protected]
10.11 @ 139.19 best mph
1.47 best 60ft if I can get a full pass with this 60ftt
All made possible with Braincoating'ôs ported manifolds
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