ITR lsd into gsr tranny
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ITR lsd into gsr tranny (updated with pics)
I have an ITR transmission and I would like to use the LSD from it in my GSR transmission. If I transfer the GSR ring gear to the ITR lsd can I keep everything else on the diff like the bearings and the speed gear?
Last edited by samuraijackass; 02-21-2011 at 09:16 PM.
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Re: ITR lsd into gsr tranny
they are both hydro. The GSR tranny is from a 95 jdm gsr and the ITR tranny is from a 2001 jdm ITR. Should I order the bearings for a 95 GSR or do I just order shims? and how do I check preload? thanks for your help.
Last edited by samuraijackass; 01-08-2011 at 10:04 PM.
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Re: ITR lsd into gsr tranny
I would keep the ITR ball bearings and just replace the shim. The preload shim comes in various sizes, start with the 1.45mm shim OEM # 41454-PL3-B00 (Ref #10) and see how it fits. An easy way to check the bearing preload is to install only the LSD with the bearings and shim (no shafts) and close the cases with a few bolts. You should be able to spin the differential freely but it should not move back and forth in the housing. You may need a different size shim if it feels too loose or too tight. The factory service manual shows how to measure for the shim with a feeler guage but the 1.45mm shim works fine 90% of the time.
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Re: ITR lsd into gsr tranny
I would keep the ITR ball bearings and just replace the shim. The preload shim comes in various sizes, start with the 1.45mm shim OEM # 41454-PL3-B00 (Ref #10) and see how it fits. An easy way to check the bearing preload is to install only the LSD with the bearings and shim (no shafts) and close the cases with a few bolts. You should be able to spin the differential freely but it should not move back and forth in the housing. You may need a different size shim if it feels too loose or too tight. The factory service manual shows how to measure for the shim with a feeler guage but the 1.45mm shim works fine 90% of the time.
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Re: ITR lsd into gsr tranny
I opened up the 95 GSR transmission and I noticed that the differential has tapered roller style bearings like you said earlier. But the casing didn't have shims in it. Do the tapered bearings not use shims? And do I just pop out the taper inserts on either side of the casing with a screwdriver to make way for the ball bearing set up?
Thank me later. scroll down and he explains what to do exactly. I just did this about 3 days ago. Werry simple. Oh and make shure you measure out ure shim clearances werry werry good. I have 3 shims laying around now lol. 3x15$ each lol.
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Re: ITR lsd into gsr tranny
They have shims. It's just not the c-clip shim you're probably thinking it is. It'll be easier for you, with your experience (not a dig, btw!), to just switch over to the enclosed ball bearings for the new diff going in. It'll be easier to shim the diff correctly with those.
Good luck. And don't just rush through the job. Play around with everything a bit to try and get a better understanding of what's going on with it. You'll enjoy it more, and probably gain more reward from doing it yourself.
Good luck. And don't just rush through the job. Play around with everything a bit to try and get a better understanding of what's going on with it. You'll enjoy it more, and probably gain more reward from doing it yourself.
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Re: ITR lsd into gsr tranny
http://www.xm-parts.com/articles/hgear/gear.htm
Thank me later. scroll down and he explains what to do exactly. I just did this about 3 days ago. Werry simple. Oh and make shure you measure out ure shim clearances werry werry good. I have 3 shims laying around now lol. 3x15$ each lol.
Thank me later. scroll down and he explains what to do exactly. I just did this about 3 days ago. Werry simple. Oh and make shure you measure out ure shim clearances werry werry good. I have 3 shims laying around now lol. 3x15$ each lol.
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Re: ITR lsd into gsr tranny
They have shims. It's just not the c-clip shim you're probably thinking it is. It'll be easier for you, with your experience (not a dig, btw!), to just switch over to the enclosed ball bearings for the new diff going in. It'll be easier to shim the diff correctly with those.
Good luck. And don't just rush through the job. Play around with everything a bit to try and get a better understanding of what's going on with it. You'll enjoy it more, and probably gain more reward from doing it yourself.
Good luck. And don't just rush through the job. Play around with everything a bit to try and get a better understanding of what's going on with it. You'll enjoy it more, and probably gain more reward from doing it yourself.
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Re: ITR lsd into gsr tranny
I have been thinking it might be easier to just put the GSR mainshaft, countershaft and gears into the ITR transmission and just change final drive on the LSD. I did notice there is a shim inside the gear housing and I'm guessing that is for mainshaft thrust. How do you measure for that shim? I don't notice anyone anyone talk about it on final drive installations. Is it not as important as the differential preload?
Last edited by samuraijackass; 01-13-2011 at 08:02 PM.
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Re: ITR lsd into gsr tranny
I decided to use the ITR case because it was in much better condition and I didn't have to re shim it. I used the shift forks from the ITR because they came from that case, which seemed like a good idea. I don't have any pictures of swapping the ring rear. These pictures start with the diff reinstalled and the mainshaft and countershaft reinstalled.
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Re: ITR lsd into gsr tranny
The GSR gears feel so much better for boost. The ITR was good when I was only making 250whp but about 300 it becomes a PITA. It's also much better on the highway. Now it's time to go back to the tuner and shoot for 350whp.
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