TCASE with crawler gears

[DC xterra]

so i finished putting in my Tcase with crawler gear in last night. the one that i won at ECXC the car drives fine in 2h and 4h but when i pop it in 4lo the gears kick in and it humms loud and also when i put it back fron neutral to 4h it screeches everytime

 

[Silver dude]

Maybe you didn't grind enough of the gear case away? Not enough clearance? There will be some whine as the gears are straight cut. Much like reverse gear makes some noise.

I'd pull it down and inspect it. Make sure the bearings are ok. The little bearing that comes with the kit can often be difficult to seat properly into that retainer they give you. (Calmini kit no experience with the 4x4parts kit.)

 

[DC xterra]

i was running it in drive before so it was making that noise when i tried in 1 it crawled just fine but woudnt go any fast in 2 it can go about 20mph but it starts to whine a bit when i hit around 20

 

[Silver dude]

I certainly wouldn't exceed 20mph in low range. It is by design a low speed unit. Those gears are really twirling at that rate of speed.

 

[DC xterra]

i figured not to go more than 15mph, its just sucha a difference now in 4lo

 

[Eric P]

The Calmini gears are quite a bit louder than stock in 4 low. 8 years going now

 

[rokdaddy]

The Calmini gears are quite a bit louder than stock in 4 low. 8 years going now

Nice... I'm a few weeks away from installing my AC T-case gears. Have you been happy with them over the years? Also, what is the top speed that you're comfortable running them in 4lo?

I think I saw your rig in Moab this year, was yours the red first gen parked near the entrance at Spanish Trails Arena?

-Rok

 

[Eric P]

Nice... I'm a few weeks away from installing my AC T-case gears. Have you been happy with them over the years? Also, what is the top speed that you're comfortable running them in 4lo?

I think I saw your rig in Moab this year, was yours the red first gen parked near the entrance at Spanish Trails Arena?

-Rok

Yes mine was parked at the entrance.

When off road, I don't look at the speedo. I just keep the RPMs under 4000 in 5th before I decide to stop and take it out of 4 lo. I close to top speed in 2 high.

 

[UofA_Xterra]

Nice... I'm a few weeks away from installing my AC T-case gears. Have you been happy with them over the years? Also, what is the top speed that you're comfortable running them in 4lo?


-Rok

I've been running the AC T-case gears for about 5 months now and they are the best mod I have done to the X (and I've done quite a bit); you'll love them. The whine is pretty intense over about 15 mph and the faster you go the more it feels like the T-case is going to explode. I keep it under about 15-20 mph for that reason. It from idle to about 5 mph that these gears shine!