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post #1 of 5 (permalink) Old 08-25-2007, 03:54 PM Thread Starter
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death of a 4r part II

so, after being rebuilt at 103k, at 165k i do not have lockup from my converter, and my fluids looking chared after having to baby back to the shop with the permantly unlocked converter, witch in turn probably made the transmission temperatures skyrocket, im also having a next to impossible o/d engagement, so it is time for a rebuild.

but anywho, i am thinking i would like to see whats out there in the ways of aftermarket clutches for the 4r, because i think while its out ill put new clutches into the car, does anyone make good solid large power capable clutches for the 4r, or should i still go with 98+ friction material and i will be good with all that?

i also want a better then factory pan, do us mn12 guys have any worries with running a deeper pan, as in scraping over speed bumps or the likes?

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post #2 of 5 (permalink) Old 08-25-2007, 06:23 PM
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get a low miles newer trans and it'll come out cheaper and stronger


deep pan will not pose any problem at all.

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post #3 of 5 (permalink) Old 08-25-2007, 06:52 PM
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been a while since i read a post about a failing trans kinda sucks. ive been lucky with my three mn12's with 4r70w's and not one of them has gone... yet.

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post #4 of 5 (permalink) Old 08-26-2007, 08:12 AM Thread Starter
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Quote:
Originally Posted by Casper View Post
get a low miles newer trans and it'll come out cheaper and stronger


deep pan will not pose any problem at all.
im not going stock, thats one thing for sure, at some point in time i would like to have this thing a little faster then a low 14, that combined with the fact that i do have a daily driver, witch also means the car will see alot more hard usage means i do want something alot stronger then stock, rebuilding transmissions ever 60k isnt really on my to do list in life either

1995 Ford Thunderbird 4.6 LX - SC wheels, enlarged rear sway bar, full sound system, cut mufflers, PST 1 1/8" rear bar, Eibachs, Mark 8 LCA's, Al housed 3.55 gearset, cut mufflers
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post #5 of 5 (permalink) Old 08-26-2007, 08:13 AM Thread Starter
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Quote:
Originally Posted by greencurse View Post
been a while since i read a post about a failing trans kinda sucks. ive been lucky with my three mn12's with 4r70w's and not one of them has gone... yet.
i think the failure was more of a heat related thing, i have the big 24k GVW b&m stack cooler, but i think with all the line pressure and the aggressive torque converter lockup settings combined with a certain driving style did it in alot quicker then it should have, it was a 98 spec trans and i did have a cooler and a jmod

1995 Ford Thunderbird 4.6 LX - SC wheels, enlarged rear sway bar, full sound system, cut mufflers, PST 1 1/8" rear bar, Eibachs, Mark 8 LCA's, Al housed 3.55 gearset, cut mufflers
2011 BMX X5 Xdrive50i - BMS Stage 1, Cut Muffler
2005 Jeep Grand Cherokee 5.7L-Her stock DD
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