How much will a T-90 handle - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 01-24-2012, 02:49 PM   #1 (permalink)
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How much will a T-90 handle

I'm wondering how much horsepower i can run through a T-90 transmission without looking to rebuild it very time i go out. The reason I ask is because I want to run a 2.3 turbo motor with my t-90 and they make roughly 180hp with no modification. Thanks
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Old 01-24-2012, 04:20 PM   #2 (permalink)
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you should be fine if you drive it right. the old t-90's were never known for their 'speed shifting' abilities. that being said, your 2.3 will be putting out just a bit more than the old jeep v6 did.
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Old 01-24-2012, 04:39 PM   #3 (permalink)
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Alright thanks
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Old 01-26-2012, 08:58 PM   #4 (permalink)
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in an earlier incarnation of my Willys I had a 22re Toyota with a 4speed toyota Transmission running to a T90/spicer 18, I used the T90 as a Two speed range box...I broke transfercases mostly due to crappy Crown Automotive parts but never broke transmission internals.
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Old 02-09-2012, 07:57 AM   #5 (permalink)
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well I how with a good rebuild and the change of gearing in my t-90 that this will handle the 200 hp that this motor will be putting out. Also has anyone adapted the dana 20 transfer case to the t-90 from what I'm finding its not just a simple swap you have to mill relief spots in the case to get them to mount right and buy the barring adapter. But I will take some pictures of this to show people what I mean
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Old 02-09-2012, 02:00 PM   #6 (permalink)
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I'm pretty sure you can put the d18 internals into the d20 case and it bolts up.
That's just what i read though
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Old 02-09-2012, 02:40 PM   #7 (permalink)
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Are you going to do a compete dana 20 with a centered rear output?

The case is the same as the D18, but the bore on the front of the case is larger than most D18 cases, especially early ones.

I am not sure if there are any differences in how the rear output bolts to the T90 output shaft. Most adapter packages let you use either case, so I think it should work....
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Old 02-09-2012, 07:17 PM   #8 (permalink)
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Well Im using the dana 20 case for the center output on the rear and I'm using the dana 18 gears with the bronco sliding gear to give the dana 20 the low ratio of the dana 18
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Old 02-09-2012, 07:36 PM   #9 (permalink)
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Did you get a centered-diff rear axle, then?
Or are you going to run the offset one and replace the u-joints often?
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Old 02-11-2012, 03:37 PM   #10 (permalink)
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Running a center mounted dana 44 rear axle
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