4R70W Rebuild kits - TCCoA Forums
 
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post #1 of 9 (permalink) Old 04-27-2006, 02:02 AM Thread Starter
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4R70W Rebuild kits

I'm planning on trying to rebuild the 4R70W in my 94 cougar myself. Anybody recommend a place to get a good rebuild kit? I was looking at Baumann. Seems to be a good price and uses OEM parts.

The tranny is a 95 spec Form reman that I put in 200,000 miles ago (car has 287k on it) and did the j-mod on. Trans is fine other than a REAL bad front seal leak, occasional TC shudder (even on new fluid) and some confucion on the downshifts. So a basic overhaul kit with new clutches, seals, etc. should do the trick.
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post #2 of 9 (permalink) Old 04-27-2006, 08:46 AM
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Shoot me a pm of exactly what you want and I will look into it for you. I usually wouldn't suggest building a 95 unit,but if it is a stock motor that isn't being run hard it will be alright.
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post #3 of 9 (permalink) Old 04-27-2006, 12:09 PM Thread Starter
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Well, I will probably be putting in a 2000 GT motor at the same time. Either that or rebuilding my current npi motor with pi heads & cams (if the GT motor I'm working on falls through). That being said I will not be running it extremely hard. In fact it will end up being my wife's car. I will be putting in a ford higher stall converter (lincoln or mark 7 I forget) and an MN12 Perf y pipe with dynomax catback along with a little pcm tuning. But that will be it.

This is where I was looking to get the overhaul kit:

http://www.becontrols.com/products/aodecat.htm

I've generally heard good things about them.
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post #4 of 9 (permalink) Old 04-27-2006, 12:40 PM
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I wouldn't bother rebuilding a 95 core, but I can get you a kit if that is really what you want to do. I especially wouldn't use any alto clutches like the kit you are looking at.
Alan

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post #5 of 9 (permalink) Old 04-28-2006, 09:45 AM
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Dog...you suggest Dynax clutches right? Where are you buying?

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post #6 of 9 (permalink) Old 04-28-2006, 09:49 AM
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bulkpart.com has some good kits..




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post #7 of 9 (permalink) Old 04-28-2006, 10:06 AM Thread Starter
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Thanks guys. This is some really helpful info.

I re-read Jerry’s article and as far as I can tell there is no reason not to use my current trans considering my plans for the car. I don’t expect to exceed 300 hp and 99% of the parts Jerry recommends need changing (that I haven’t already changed) in the earlier transmissions are for applications exceeding 350 hp.

When I last replaced the transmission (200,000 miles ago) I upgraded to a 95 spec trans & pcm per the ford TSB. Then when I did the first fluid change I put in the bonded accumulator pistons and did the 300 hp J-mod (except I left out the bottom 1-2 accumulator spring). I have done fluid changes every 25K and aside from occasional TC shudder on old fluid and flaring on the downshifts it is performing well. It still chirps the 1-2 and the fluid looks great even when old. The problem is that it is leaking all over the exhaust from the front seal and I can’t justify putting a 200,000 mile trans that is starting to exhibit problems back in after changing just the seal.

So, that being said, it makes sense for me to stick with my 95 spec trans that I know just needs to be freshened up rather than buying a later trans that I have no history for (other than what I am told by the seller).

Anybody disagree? Is there anything I missed that I might regret?
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post #8 of 9 (permalink) Old 04-28-2006, 10:41 AM
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i can get you a complete master overhaul kit from ford for $152.

2003 Ford Expedition: 5.4L, harley supercharger, 2.93 upper pulley, 4lb lower pulley, c&l plenum, jlp cai, LFP SBTB, FTSP, Magnaflow 3" catback, Eclipse AVN-5510, white face gauges, cobalt c2 boost gauge, ddm hid's, 379 rwhp, 465 rwtq sold 11/3/12

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post #9 of 9 (permalink) Old 04-28-2006, 12:22 PM
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Last I saw bulkpart doesn't carry the dynax. I buy parts from a local supplier that does.

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