L52 transmission with l43 t ase 1980 yoda
05-16-2018, 06:29 PM
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L52 transmission with l43 t ase 1980 yoda
Hi gentlemen I'm new to this side I'm looking for help
I'm in the middle of doing a trany swap my l43 with a l52
I read that I need to grind down the spine line but I will like more information pictures be better thanks
I'm in the middle of doing a trany swap my l43 with a l52
I read that I need to grind down the spine line but I will like more information pictures be better thanks
05-17-2018, 04:15 PM
#3
Some L43 cases may need the input shaft ground down. They are both 21 spline.
info cut and pasted from one of my old threads
https://www.yotatech.com/forums/f114...l#post51361563
I found this info in this thread on Pirate
basically you want to check the tc input shaft before you go cramming the cheap deal of a TC into an application other than a 4speed L43
though commonly thought not all RF1A TC's are created equal
in case pics don't show up 1st attachment is the 79-90 Input shaft that needs to be clearance
2nd pic is from Marlin crawler showing how much to take off.
if you need to grind the input take your time and don't over heat it
info cut and pasted from one of my old threads
https://www.yotatech.com/forums/f114...l#post51361563
I found this info in this thread on Pirate
basically you want to check the tc input shaft before you go cramming the cheap deal of a TC into an application other than a 4speed L43
though commonly thought not all RF1A TC's are created equal
Check Dave's picture above. All inputs are tapered at the end, but the inputs found behind a L43 4-speed (20R applications only) have an enlarged spline collar that mates with the fully splined transmission output coupler. When the next-generation L-series transmissions were introduced (L45/50/52), the output coupler was redesigned with a 1/2" counterbore (with no splines). This helps the transfer case input shaft find the transmission output coupler during assembly on the production line.
Toyota was probably damaging transmission output seals with that enlarged spline collar and were looking for a way to improve the design. We believe the 2nd generation 21-spline inputs are made from better metal therefore the strength of the splines were no longer needed, however we have not proved this theory. Another theory could be that Toyota wanted to include a "fuse" in the drivetrain.
Here is a picture of the L43-style transfer case input I installed behind a Marlin Crawler W56A-HD 5-spd trans:
Toyota was probably damaging transmission output seals with that enlarged spline collar and were looking for a way to improve the design. We believe the 2nd generation 21-spline inputs are made from better metal therefore the strength of the splines were no longer needed, however we have not proved this theory. Another theory could be that Toyota wanted to include a "fuse" in the drivetrain.
Here is a picture of the L43-style transfer case input I installed behind a Marlin Crawler W56A-HD 5-spd trans:
in case pics don't show up 1st attachment is the 79-90 Input shaft that needs to be clearance
2nd pic is from Marlin crawler showing how much to take off.
if you need to grind the input take your time and don't over heat it
Last edited by dropzone; 05-17-2018 at 04:18 PM.
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