dual cases getting hot.

kinzer · 10-29-2009, 09:04 PM

hey, put in a dual 4cyl transfer case set up in my truck. 2,28 23 spline in front case and 23 spline 4.70 in the rear case. when using the front case the shifter gets really hot. i figured this is normal because more gears are turning causing more friction, thus heat. but its getting really hot sometimes. does this happen to other dual casers? my fluid level is good too. and i installed the oil galleys and pump.

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tc · 10-29-2009, 09:12 PM

Mine gets pretty hot - you can feel the heat coming through the open hole in the floor (one of these days I need to get a shift boot ...).

Are you using dino oil? The lower friction of a synthetic might help.

4Crawler · 10-29-2009, 09:20 PM

Yep, mine do that, too. With conventional oil and driving at high speed for a long time, the levers are almost too hot to touch. With Redline synthetic, it is probably 10-20F cooler, still hot but not so much you can't touch the shifters.

kinzer · 10-29-2009, 09:25 PM

it mostly gets hot when using the low in the first case and in higher gears. id rather resort from synthetic, iv had way too many problems with this thing leaking. first was the v6 adapter plate didnt seal and i had to drop it all and re seal it, then the drive flanges were leaking, then the rear output housing. i think iv pretty much got a hold of the leaks, for now.

4rnr · 10-29-2009, 09:46 PM

it likely has more to do with heat coming through the floor now that you have cut it up. I have a large custom center console and I cant even touch it in the summer.

kinzer · 10-29-2009, 10:04 PM

actually no, the first case, the one getting hot, is in the stock location. and i have a boot covering the hole. which im pissed about because dr smash started making triple shifters again! after i cut the hole.

**waskillywabbit** · 10-29-2009, 10:16 PM

Mine get hot as hell. I need to cover the opening and put on some shift boots.

kinzer · 10-29-2009, 11:02 PM

ocdropzone · 10-30-2009, 01:19 AM

Mine get hot too but you might wanna separate the two cases and make sure that none of the oil passages are blocked.

I think that I will give the synthetic a try. The ice in a cup melts pretty quick in mine...

nice clean job on your install by the way..

turboboost · 10-30-2009, 02:02 AM

My single case even gets really hot when I use 4LO a lot on a long day of wheeling.

10-29-2009, 09:12 PM	#2 (permalink)
tc Contributing Member Join Date: Nov 2005 Location: Longmont, CO Posts: 8,372	Mine gets pretty hot - you can feel the heat coming through the open hole in the floor (one of these days I need to get a shift boot ...). Are you using dino oil? The lower friction of a synthetic might help. __________________ Check out www.coTTORA.org to hook up with great Toyota 'wheelin' folks! Current - 93 4Runner: 3VZ 33"x10.50" no lift ARB F/R 96 Impala SS: My own personal cop car Previous - 89 2WD Pickup 22R, Fabtech "Ivan Dan" lift, 31x10.50, IASCA World Finals 4th Place Stop with the mods and get on the trail! Pix at www.4wheelingoh.shutterfly.com/action

10-29-2009, 09:20 PM	#3 (permalink)
4Crawler Contributing Member Join Date: Jun 2002 Location: SF Bay Area, CA Posts: 7,828	Yep, mine do that, too. With conventional oil and driving at high speed for a long time, the levers are almost too hot to touch. With Redline synthetic, it is probably 10-20F cooler, still hot but not so much you can't touch the shifters. __________________ 1985 Toyota 4Runner SR-5, 22REC engine, dual t-cases, 4.88 gears, dual ARBs, 33x10.50 BFGs or 35x12.50 MTRs r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad Gettin'Off 4WD Club

10-29-2009, 09:46 PM	#5 (permalink)
4rnr Registered User Join Date: Sep 2004 Location: Plainfield, IL Posts: 1,469	it likely has more to do with heat coming through the floor now that you have cut it up. I have a large custom center console and I cant even touch it in the summer. __________________ poop 1988 stock 4runner, v6, 5spd, soft top. 1990 fj62 stock and mint! 1992 4runner, 3.4, auto, SAS'ed, Marlin USA springs (4"/5"), 37" PBR's, 30 spline Longfields, Hydro assist, dual inchworms (5:1, twin stick, 23 spline, chromo output, 10* clock) 5.29's, lockrite's, custom exo, High angle drivelines drive shafts, 108" wheelbase, Warn hs9500i, Mcintosh/Dynaudio a/v system. The build up...http://www.yotatech.com/showthread.php?t=74915

10-29-2009, 10:16 PM	#7 (permalink)
waskillywabbit Super Moderator-Sponsoring Member Staff Join Date: Jul 2003 Location: Tuscaloosa, AL Posts: 14,548	Mine get hot as hell. I need to cover the opening and put on some shift boots. __________________ WabFab Off-Road, LLC MySpace Twitter Facebook 7th Annual South East 4Runner Jamboree, 2010 The toughest part of a Jeep is the chick driving it. WabFab Off-Road 4th Anniversary Sale

10-30-2009, 01:19 AM	#9 (permalink)
ocdropzone Contributing Member Join Date: Oct 2005 Location: PDX, OR Posts: 4,705	Mine get hot too but you might wanna separate the two cases and make sure that none of the oil passages are blocked. I think that I will give the synthetic a try. The ice in a cup melts pretty quick in mine... nice clean job on your install by the way.. __________________ ~Robb '81 Trekker The B4Runner Build TREKKER Forum Mini FAQ/Misc Ideas Thread TRY THESE SEARCH LINKS GOOGLE FOR TOYOTA WEBSITES LINK TO ONLINE FACTORY SERVICE MANUALS Drive a real 1st Gen Wheel Responsibly, Don't Screw It Up for Others

10-30-2009, 02:02 AM	#10 (permalink)
turboboost Registered User Join Date: Aug 2008 Location: Winnipeg, Manitoba, Canada Posts: 383	My single case even gets really hot when I use 4LO a lot on a long day of wheeling. __________________ 1990 Toyota 4Runner - SR5, 22RE, 5 speed, 35" Mud King XT, a bunch of mods. 1986 Mazda B2000 - 5 speed, carb'd 2.0, the winter beater. 1979 Datsun 280zx - 2 seater, 5 speed, stripped interior, etc. 1998 Nissan Altima - 5 speed, 1981 280zx turbo snowflake rims. 1985 Toyota Pickup - SR5, 22RE, 5 speed, Xtra cab, lifted 2", 35" boggers, etc - Sold 1983 Datsun 280zx - Turbo Intercooled L28ET - Crushed. 1985 Nissan 300zx - 5 speed, race prepped, etc - Crushed. IFS Club #7

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