Rising Sun Member Forums  

Go Back   Rising Sun Member Forums > Toyota 4x4 > General Tech Forum

Notices

Reply
 
Thread Tools
  #1  
Old 07-28-2010, 08:33 PM
Bruiser's Avatar
Bruiser Bruiser is offline
Rising Sun Member
 
Join Date: Sep 2008
Location: Littleton
Posts: 343
Default Has Anyone Installed ByPass Tranny to TC

So, I noticed that my transfer case it transferring oil to the tranny in my FJ40. From what I read online it seems like a pretty common problem. I am temporarily living in limbo so most of my tools are in a POD somewhere in Colorado. So, I don't have the means to drop the TC and replace the seal. Nor am I sure that it would solve the problem because some folks online have suggested a worn Tranny output shaft is the real problem.

Anyway, have any of you tried the bypass? I was just going to buy the one from MAF because I don't have the patience right now to source the parts. Below is the link for the MAF bypass.

http://www.man-a-fre.com/parts_acces...ansfercase.htm

Is there a better one I should use? I have also heard people say they leave it on even after they fix the seal as an insurance policy. Any thoughts on that?


As always, thanks for everyone’s comments.

Justin

Justin
__________________
__________________________
Justin - Littleton
TLCA # 18376
78 FJ40, Rear Locker, 33's, power steering, sbc and so much more left to do.

Last edited by Bruiser; 07-28-2010 at 09:04 PM.
Reply With Quote
  #2  
Old 07-28-2010, 09:45 PM
Jacket's Avatar
Jacket Jacket is offline
Rising Sun Member
 
Join Date: Feb 2007
Location: Lafayette
Posts: 4,011
Default

I've got the MAF bypass kit. You could probably do it cheaper by sourcing the parts, but for the ease and insurance, I think the MAF kit is a good buy. I wrapped the hose in a heat resistant cover because of the way my exhaust is routed, so that's something to check out.
__________________
- Matt
1976 FJ40 - green and mostly stock
1996 FZJ80 - not so stock
Reply With Quote
  #3  
Old 07-28-2010, 11:15 PM
Rzeppa's Avatar
Rzeppa Rzeppa is offline
Cruise Moab Committee
 
Join Date: Aug 2005
Location: Kittredge CO, USA
Posts: 5,197
Default

Quote:
Originally Posted by Bruiser View Post
So, I noticed that my transfer case it transferring oil to the tranny in my FJ40. From what I read online it seems like a pretty common problem. I am temporarily living in limbo so most of my tools are in a POD somewhere in Colorado. So, I don't have the means to drop the TC and replace the seal. Nor am I sure that it would solve the problem because some folks online have suggested a worn Tranny output shaft is the real problem.

Anyway, have any of you tried the bypass? I was just going to buy the one from MAF because I don't have the patience right now to source the parts. Below is the link for the MAF bypass.

http://www.man-a-fre.com/parts_acces...ansfercase.htm

Is there a better one I should use? I have also heard people say they leave it on even after they fix the seal as an insurance policy. Any thoughts on that?


As always, thanks for everyones comments.

Justin

Justin
Hi Justin,

After I did my 4 speed conversion, I had this issue also.

I realized I had not put sealant on the tranny output shaft splines when I mated the two, even though I used a new OEM seal.

Instead of paying the bucks for a "kit", I simply went to my local hardware store and got a couple of 1/8 NPT to 1/8 barb fittings, some 1/8 ID tubing, drilled and tapped my fill plugs, stuck the tubing on the barbs and went about my business. That was 4 years ago and all is well. One of these days, whenever I have occasion to unmate the tranny and t-case I'll put some sealant on those splines. In the mean-time, it's all good.
__________________
Jeff Zepp
Kittredge CO USA
1971 & 1976 FJ40s, 1978 FJ45, 1987 FJ60
Rising Sun 4WD Club, TLCA #4063
http://american3dprinting.net/
Reply With Quote
  #4  
Old 07-29-2010, 06:19 AM
Bruiser's Avatar
Bruiser Bruiser is offline
Rising Sun Member
 
Join Date: Sep 2008
Location: Littleton
Posts: 343
Default

Thanks Jeff and Matt. I was just going to buy the kit becasue I liked the way it uses the current thread pattern and becasue I don't even have my tap and die set. All I kept from going in the POD was the basic tools I needed for trail repair. Which, thinking back on it should have included the tap and die set but not much I can do about it now. I guess I will just have to buy a house to fix that issue.

Justin
__________________
__________________________
Justin - Littleton
TLCA # 18376
78 FJ40, Rear Locker, 33's, power steering, sbc and so much more left to do.
Reply With Quote
  #5  
Old 07-29-2010, 06:38 AM
ttubb's Avatar
ttubb ttubb is offline
Rising Sun Member
 
Join Date: Aug 2007
Location: Crested Butte/Tucson
Posts: 556
Default

I installed the Man-A-Fre kit when I rebuilt my rig, even though the trany and xfer were rebuilt with new seals. Just makes sense and it is a good kit. T
__________________
KA7TLT - TLCA 13015
"78" FJ-40 - "Marmot" F&R ARB Lockers, OME Suspension, MAF Shackle Rev Kit, 4+ Flip Kit, Rear Disc Brakes, Warn Winch, Safari Snorkel, 4+ Rear bumper/Tire Carrier
"95" FZJ-80 - "White Top" F&R ARB Lockers, Slee F&R Bumper & Sliders, Warn Winch, 35s, Safari Snorkel, Low Range Gears, P/T Kit

"13" Taco 4X4 Extra Cab, Firestone Air Ride, Airstream tow vehicle - "Daily Driver"
Reply With Quote
  #6  
Old 07-29-2010, 07:56 AM
RicardoJM's Avatar
RicardoJM RicardoJM is offline
Rising Sun Member
 
Join Date: Jul 2007
Location: Centennial, CO
Posts: 2,302
Default

Quote:
Originally Posted by Bruiser View Post
Thanks Jeff and Matt. I was just going to buy the kit becasue I liked the way it uses the current thread pattern and becasue I don't even have my tap and die set. All I kept from going in the POD was the basic tools I needed for trail repair. Which, thinking back on it should have included the tap and die set but not much I can do about it now. I guess I will just have to buy a house to fix that issue.

Justin
I used one on my old set up, I had not thought of putting it in on the new set up but after reading Jeff, Matt and Terry's posts - I think I'm going to install it anyway. That said, it currently in my garage available for you to take it to the Parker Store to have one made.
__________________
Ricardo Maestas - Bio Page
KD0CAW
1999 LX 470, 1971 FJ-40
TLCA #18941
Reply With Quote
  #7  
Old 07-29-2010, 08:59 AM
SteveH SteveH is offline
Hard Core 4+
 
Join Date: Aug 2006
Location: Colo Springs
Posts: 1,282
Default

Lone voice in the wilderness - on my '87 FJ60 and '78 FJ40, I removed the vent cap on the xfer case, which prevented it from pressurizing and pushing the oil into the transmission, and never had this problem again.

Both trucks suffered the 'empty xfer/overfilled transmission' problem at one time or another. However, I have no beef with the hose between the two fill plugs - it's benign, effective and cheap.
__________________
Steve H.
Colo Springs, CO
Reply With Quote
  #8  
Old 07-29-2010, 09:13 AM
Air Randy's Avatar
Air Randy Air Randy is offline
Cruise Moab Committee
 
Join Date: Aug 2008
Location: Franktown, CO
Posts: 2,804
Default

Wouldn't that increase the odds though of getting water into the TC from road splash or water crossings?

I had the MAF setup, Ricardo has it now since I went to an Orion TC. My only concern was the 1 fitting is on the bottom of the TC and hung down a little. It looked like a rock magnet to me and if you break it off on the trail you'll lose all of your 90w. Make sure you adjust everything for maximum clearance and ideally have a skid plate that protects those components.
__________________
Randy Rosetta KDKWX TLCA #19351 69 FJ40 "Meanie" & 1970 Boss 302 Mustang
Reply With Quote
  #9  
Old 07-29-2010, 11:34 AM
SteveH SteveH is offline
Hard Core 4+
 
Join Date: Aug 2006
Location: Colo Springs
Posts: 1,282
Default

I ran a vent hose (fuel line) up to the top of the cowl from the top of the xfer case. Just removing the vent, alone, would indeed be a bad plan.
__________________
Steve H.
Colo Springs, CO
Reply With Quote
  #10  
Old 07-29-2010, 12:34 PM
Bruiser's Avatar
Bruiser Bruiser is offline
Rising Sun Member
 
Join Date: Sep 2008
Location: Littleton
Posts: 343
Default

Thanks for everyone's reply.

Ricardo, I am just going to order one from MAF but thanks for offering yours.


A skid plate is definitely the next thing on my list. I have one but need to adapt it some since the sbc pushed my tranny and TC forward.

Justin
__________________
__________________________
Justin - Littleton
TLCA # 18376
78 FJ40, Rear Locker, 33's, power steering, sbc and so much more left to do.
Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -6. The time now is 01:27 AM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.