4l80e
TECH Junkie
Joined: Dec 2012
Posts: 3,621
Likes: 1,335
From: Iowa
Are you using a bearing or a stock washer
If using a washer...I would leave it the heck alone. Too tight and you'll eat up the washers
If you're going to machine it for use with a bearing...then you can set it up much tighter.
What are you trying to achieve by shimming the carrier?
If using a washer...I would leave it the heck alone. Too tight and you'll eat up the washers
If you're going to machine it for use with a bearing...then you can set it up much tighter.
What are you trying to achieve by shimming the carrier?
TECH Junkie
Joined: Jun 2008
Posts: 3,204
Likes: 1,391
From: Nitro Alley
TECH Junkie
Joined: Dec 2012
Posts: 3,621
Likes: 1,335
From: Iowa
Reaction carrier is meant to float. There is no factory measurement for its endplay.
.050-.080 of travel for the reaction carrier is totally normal
If you're going to shim it, you might as well shim it to preload the geartrain...this keeps it running true center and it also ensures the band runs on the same place on the drum all the time
.050-.080 of travel for the reaction carrier is totally normal
If you're going to shim it, you might as well shim it to preload the geartrain...this keeps it running true center and it also ensures the band runs on the same place on the drum all the time
TECH Junkie
Joined: Jun 2008
Posts: 3,204
Likes: 1,391
From: Nitro Alley
Reaction carrier is meant to float. There is no factory measurement for its endplay.
.050-.080 of travel for the reaction carrier is totally normal
If you're going to shim it, you might as well shim it to preload the geartrain...this keeps it running true center and it also ensures the band runs on the same place on the drum all the time
.050-.080 of travel for the reaction carrier is totally normal
If you're going to shim it, you might as well shim it to preload the geartrain...this keeps it running true center and it also ensures the band runs on the same place on the drum all the time
However that amount of clearance leaves quite a bit of room for improvement.
I much prefer to obtain a 0.0100" clearance for carrier float.
Sonnax sells factory type thicker 4 tang thrust washers for the reaction carrier to output carrier location and output carrier to case location.
However since well all usually throw the factory 4 tang thrust washers in the garbage... I use two THM350C pump roller bearings and corresponding shims for rear end-play and reaction end-play.
Machine a bearing pocket into the reaction carrier of the loose OD of the bearing and to a depth of about 0.0800".
Now on the bench, assembly the transmission/ gear-train as normal for measuring end-play, up to the center support with the sun-gear shaft and main-shaft installed.
Install a dial indicator as shown, measuring between the top of the center support and top of the main-shaft.
Record a measurement with a reaction carrier roller bearing installed and the carrier floating free of the center support and output carrier.
Then shim up, until the center support is raised off of the reaction carrier.
If the last shim installed has raised the center support off of the reaction carrier; record how much the center support was raised (example 0.0080")
Use the amount the center support was raised by and add 0.0100" to determine how much shim thickness to remove for a Ten Thousandths end-play.
Example here, remove 0.0180" for Ten Thou clearance.
TECH Junkie
Joined: Dec 2012
Posts: 3,621
Likes: 1,335
From: Iowa
At least cite your sources vortech lol
http://www.ckperformance.com/View/RO...ACTION-CARRIER
Why does OP want to shim this...what are you trying to achieve
http://www.ckperformance.com/View/RO...ACTION-CARRIER
Why does OP want to shim this...what are you trying to achieve
TECH Junkie
Joined: Jun 2008
Posts: 3,204
Likes: 1,391
From: Nitro Alley
At least cite your sources vortech lol
http://www.ckperformance.com/View/RO...ACTION-CARRIER
Why does OP want to shim this...what are you trying to achieve
http://www.ckperformance.com/View/RO...ACTION-CARRIER
Why does OP want to shim this...what are you trying to achieve
My instruction are very similar but they are not identical... Most of us have been using a Lathe to establish end-play for transmissions for decades... this is nothing proprietary.
Same photos by Chris at CK... but my photos are sourced from Gears magazine March 2016
Dude how are you a LS1 enthusiast? and do not know how to spell the General Motors "Vortec" terminology correctly? LOL!
Last edited by vorteciroc; Jul 4, 2019 at 01:48 PM.
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Thread Starter
Teching In
Joined: Oct 2017
Posts: 31
Likes: 2
thank for reply i got 70th slop try to tighten it up reaction carrier end-play .make it run true its in a 1ton pulling heavy trailer and small digger . i read chris post but got no lathe .got shim from sonnax put bass plus 10 5tho shim to get 12tho clearance. thank you
TECH Junkie
Joined: Dec 2012
Posts: 3,621
Likes: 1,335
From: Iowa
I can't seem to find them...maybe they weren't sonnax? Sorry, my mistake
Sonnax does make a shim 34006-05 that will work
I know there are different thickness 4 tab washers...I just can't seem to find where I bought them last
Sonnax does make a shim 34006-05 that will work
I know there are different thickness 4 tab washers...I just can't seem to find where I bought them last