I just picked up an 84 FJ with a half complete Cummins 6BT conversion project. The engine is in, all it needs is the drivelines built, tranny and transfer case installed and some interior stuff. Tim up at Landcruiser Specialties in PDX is helping me put her all together. I'll be posting pics of the build. The tranny is the NV4500 5spd Transfercase is NP205 This is my first question, can...
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Thread posts in Cummins 6BT conversion:1.
Started 2 years, 2 months ago (2007-04-25 22:11:00)
by Captain23
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2.
Started 2 years, 2 months ago (2007-04-25 22:30:00)
by cody c
4.56 or maybe 4.88 gears would be ideal for my 3B diesel with 35's, but i dont know what would be best for that motor/tranny. If you had D60's i throw them in to match the drivetrain you have and the power of that cummins. If you keep the stock axels get some longfields first thing. There is also a stronger aftermarket rear axle shaft but i cant remember who sells it. I think the dakars might ...
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Started 2 years, 2 months ago (2007-04-25 23:20:00)
by gifu
search a little on the gearing for a Cummins. You want to be running at about 1800 at 65MPH. This means, you want 35's and 3.73's with NV4500. Not 4.10's, not 4.56's, not 4.88's. These motors do not enjoy being over 2000RPM... redline is 2500 or so. I only wish I could find higher then 4.10's for my 80 series Cummins.
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Started 2 years, 2 months ago (2007-04-26 10:32:00)
by Captain23
Quote: Originally Posted by gifu search a little on the gearing for a Cummins. You want to be running at about 1800 at 65MPH. This means, you want 35's and 3.73's with NV4500. Not 4.10's, not 4.56's, not 4.88's. These motors do not enjoy being over 2000RPM... redline is 2500 or so. I only wish I could find higher then 4.10's for ...
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Started 2 years, 2 months ago (2007-04-26 15:51:00)
by prado t
Quote: Originally Posted by gifu search a little on the gearing for a Cummins. You want to be running at about 1800 at 65MPH. This means, you want 35's and 3.73's with NV4500. Not 4.10's, not 4.56's, not 4.88's. These motors do not enjoy being over 2000RPM... redline is 2500 or so. I only wish I could find higher then 4.10's for my 80...
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6.
Started 2 years, 2 months ago (2007-04-26 15:58:00)
by Captain23
Prado t, How hard was the brake conversion? Did you cut the axles? The donor for the Engine was a 93 Dodge, I'm pretty sure its a 6BT not a BTA need to get this right, 2000 is a lot farther from 3300
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Started 2 years, 2 months ago (2007-04-26 16:57:00)
by Tapage
Wou ! 1. BF1A T-case can handle this power I'm pretty sure ( the stock power of course ) 2. MAF Sells OME or Dakar .. ir are new springs are Dackar but I recomend AAL in front for the 6BT weight. 3. I would keep the NP205 with D60 or Factory TLC with BF1A T-case .. so leave it as is ( I thought with NP and Dana axle ) 4. 3.73 as much with 35" tires Plase take pics and ...
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Started 2 years, 2 months ago (2007-04-27 15:11:00)
by Captain23
Should I cut the axles?
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9.
Started 2 years, 2 months ago (2007-04-27 20:06:00)
by prado t
Quote: Originally Posted by Captain23 Prado t, How hard was the brake conversion? Did you cut the axles? The donor for the Engine was a 93 Dodge, I'm pretty sure its a 6BT not a BTA need to get this right, 2000 is a lot farther from 3300 the 6bta is in the dodge still i was only mentioning that...
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10.
Started 2 years, 2 months ago (2007-04-28 17:40:00)
by Dieseltim
As far as the 6bt and SVO PLEASE don't do that to a great engine. I have almost 5 yrs experince with SVO/ WVO and Biodiesel, if you do any kind of alt fuel. I highly recommend Biodiesel. From all the data that I have collected it is a proven fact that SVO WILL coke up the insides of the engine, and injectors. It may take 30,000 mi but it will happen. My first (only ) WVO test was an 85 vw golf ...
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