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Denver mad scientists - transmission lab: Lab ingredients/forumula FOUND!


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113 replies to this topic

#101 BeefaRu

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Posted 30 August 2010 - 07:56 PM

Why must the viscus center be used with the 4.11 gearing? I've found that the viscus diff in my legacy is completely pathetic and wouldn't want it offroad.

I can explain that in the manual. Long story short, when you drop to 4:11 you lose all compatibility with the mechanics of a locking center differential.

For me, the huge gearing drop was well worth it. The drop to 4:11 combined with better hi/lo combined with legacy 2.2 is really, really nice for doing jeep trails.

#102 beataru

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Posted 30 August 2010 - 07:57 PM

You could always upgrade to a cusco center. :lol:

#103 987687

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Posted 30 August 2010 - 07:59 PM

Maybe there's something wrong with my legacy, but if one wheel looses 100% traction the other wheels don't get enough power to move the car up a hill, or out of snow, etc. It just sits there and that wheel spins.

A cusco would be nice...

#104 beataru

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Posted 30 August 2010 - 08:04 PM

I belive the solution would be an Limited slip diff on either the front or the back, or you could be way uber super cool and do both, or you could be ultimate and do all 3.

350-400 bucks for obx which is an exact copy of the quaife equals awesomeness.

#105 BeefaRu

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Posted 30 August 2010 - 08:11 PM

I belive the solution would be an Limited slip diff on either the front or the back...

I have a 4:11 LSD. Some forum members said it didn't look like it worked, but when I tried to pull a huge pickup out of the ditch in my front yard I left three big divots in the snow - two rear and one front.

#106 beataru

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Posted 30 August 2010 - 08:14 PM

proof that lsds work!

My dads 04 Tacoma has the lsd/locker and it does a decent 2 wheel burnout

Dont tell him I said that.

By the way, what type of lsd?

#107 doobieryan

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Posted 30 August 2010 - 10:43 PM

I want this tranny!! It would bolt right up to an ea81 wouldn't it? About how much would it cost to build myself one?
I wish i had enough money to donate to you guide, but i just got a job last week after being layed off for 2 months.
Thanks,
Ryan

#108 baccaruda

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Posted 30 August 2010 - 11:57 PM

Putting a little pressure on the brakes should help recover traction with a wheel off the ground; the brakes are plumbed diagonalish.
Phizinza and BeastIDrive have put a lot of work into similar transmissions.. basically, you have to match the pinion to the center diff because the pinion and shaft are once piece. There were locking center diffs made for 3.7 (RX) and 3.9 (XT6) and viscous diffs made for 3.9, 4.11, and 4.44 (EJ cars). Of course you could make a hybrid pinion shaft with 4.11 pinion and a locking diff's input end, but as Phizinza said, "you'd have to be a BLOODY good welder!"

#109 Scott in Bellingham

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Posted 31 August 2010 - 07:57 AM


I want to build another 4.11 D/R using one of these last year of production D/R upper shafts. Anybody want to donate an 89 D/R? ::confused::lol::grin:



one question:

can I build a EA82 Dual range 5speed with either the 4.11 or 4.44 final gear? , and if so what parts are needed?

#110 BeefaRu

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Posted 31 August 2010 - 08:21 AM

one question:

can I build a EA82 Dual range 5speed with either the 4.11 or 4.44 final gear? , and if so what parts are needed?

Yes.
That's why I've offered to do the manual. So far only two donators though, and one of those donations is dependent on others being interested in donating. I haven't set a price because I don't know what people can afford.

Since this thread is long, how about I create another thread dedicated to seeing who's interested in donating?

#111 skishop69

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Posted 31 August 2010 - 09:55 AM

I phrased it that way for a couple of reasons. I just don't want to be the only one footing this. I know money is tight people, but even $10 or $20 here and there would show Beefy we're serious. If he comes up with a general figure, and we get some guys to put up their money, I'm in. I just don't want to fork over the money, have no one else jump in, then end up with my money back, no write up and no trans. The no trans part would be very disappointing for me. I think this is a great idea and I would be willing to build these for people who wouldn't be able to do it themselves. I think Beefy was right, start a thread with a sticky for donations....

#112 BeefaRu

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Posted 01 September 2010 - 01:48 PM

I phrased it that way for a couple of reasons. I just don't want to be the only one footing this. I know money is tight people, but even $10 or $20 here and there would show Beefy we're serious. If he comes up with a general figure, and we get some guys to put up their money, I'm in. I just don't want to fork over the money, have no one else jump in, then end up with my money back, no write up and no trans. The no trans part would be very disappointing for me. I think this is a great idea and I would be willing to build these for people who wouldn't be able to do it themselves. I think Beefy was right, start a thread with a sticky for donations....


New thread here:
http://www.ultimates...ad.php?t=115414

So far only one donation offer besides yours, but I think it'll catch on once these guys figure out the killer transmission they could have in their car.

#113 ThreeEyedBandit

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Posted 04 June 2011 - 10:23 PM

I know this is from the way back machine, but what is this pinion extender from? It is the last key to my puzzle I cant find.

Legacy trans disassembled.
RX tranny disassembled.

Cleaned both tranny's.

Theres a TON of differences in these units.

I see no need for the Legacy Viscous coupler. It looks like you can add the extender to the pinion shaft from the RX to make it still an "RX" trans with Legacy gears.

I also see no need to grind the differential area in the case. He may have been thinking of the rear diff where you'd have to do that.

Will take ALL of tomorrow to even come close to possibly getting the main case section back together.

Im still exploring on whether the lo gears from a non turbo 5 speed will fit/work.



#114 Ioku

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Posted 03 September 2011 - 01:06 AM

I think its the hollow tube that fits over the pinion on the FT4WD pinion shaft, I have a single range FT4WD trans and noticed that on it, I also have a 4WD duel range and just need to get a 4.11 early gen lagacy trans and can hopefully build one.




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