J-mod and cooler are done! - TCCoA Forums
 
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post #1 of 8 (permalink) Old 06-02-2010, 04:46 PM Thread Starter
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J-mod and cooler are done!

OK, so the car now has a Trans cooler...temps before where around 200 degrees all the time...now they rest at about 170.

J-mod was done on the trans as well...level 3...shifts nastilly hard now, it's amazing.

Weird thing with the 2-3 shift, it seems now, the car will hang and hold the high RPM for what seems like too long, then slowly drop down a couple hundred RPM, and THEN it will shift into 3rd...sometimes it does this and then IMMEDIATELY shifts into 4th after 3rd.

I think maybe it's an issue with my tune that wasn't real noticable before the jerry mod.

Interesting note on this...car has a 97 transmission, however, the plate on the valve body that must be drilled was from a 94-95, had a lot of scuff marks all over it, and there was evidance of possibly broken springs at one point, or possibly a shift kit was on it at one point....who knows.

Night & day differance though, it's like a completely different car...can't wait to take it to the track & see what it'll do

Update...I just went out and cruised this thing again...

1-2 shift is beutiful...basically anything under half throttle it just drags out second gear to about 5,000 RPM and then just falls off by about 300 rpm then slips into 3rd kinda sloppilly...sometimes it will go straight into fourth from 3rd...almost feels like the trans or the TC is slipping as the RPM will sort of rise and fall in waves right around the area before/after the 2-3 gear change.

Anything over 50% throttle is completely fine and totally normal, quick fast great shifts all the way to fourth gear.

Cruising around the neighborhood it will NEVER shift out of second into third, just screams the engine unless you get up to about 50MPH then it'll finally shift...weird...can't be anything too major though as none of this really seems like anything is wrong...maybe I can fine tune this with the XCAL

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Last edited by Earl; 06-02-2010 at 06:03 PM.
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post #2 of 8 (permalink) Old 06-02-2010, 07:17 PM
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earl what is your trans cooler rated at? Did you by pass the radiator?

Spinning pies like wheels.

DD driving my 20 year old project

Now with new ball joints...again
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post #3 of 8 (permalink) Old 06-02-2010, 07:40 PM Thread Starter
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Originally Posted by Splattered View Post
earl what is your trans cooler rated at? Did you by pass the radiator?
radiator has not been bypassed, the cooler is cooling in addition to the factory cooler

here is the cooler I bought...

http://www.napaonline.com/Search/Det...511_0071398222

no actual rating was listed on the box but it's a hayden, was the largest plate style cooler NAPA carried, and is rated for use on motorhomes, trucks that tow trailers, etc.

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post #4 of 8 (permalink) Old 06-02-2010, 10:23 PM
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did you plumb it such that as the cooled fluid exits the rad, it then proceeds to the trans cooler?

series or parallel?

Rest In Peace Mom.
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post #5 of 8 (permalink) Old 06-03-2010, 05:05 AM Thread Starter
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Originally Posted by GRNDPNDR View Post
did you plumb it such that as the cooled fluid exits the rad, it then proceeds to the trans cooler?

series or parallel?
read my last post.......

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post #6 of 8 (permalink) Old 06-03-2010, 05:19 AM
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In series, after the Radiator .. yes it is installed correctly.

The Hayden is a 30k GVWR.
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post #7 of 8 (permalink) Old 06-05-2010, 03:06 AM
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read my last post.......
i was more or less wondering if you did it that way, or some other variation, not weather or not you skipped that step.

Rest In Peace Mom.
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post #8 of 8 (permalink) Old 06-05-2010, 05:22 PM Thread Starter
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i was more or less wondering if you did it that way, or some other variation, not weather or not you skipped that step.
oh okay gotcha...

as for my weird 2-3 shift hesitation and weird OD engagement issues i was having after the J-MOD....those issues seem to have corrected themselves...trans shifts great now...shifts as it should only faster/harder

computer had to re-learn I guess

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