Perez620 Posted September 5, 2018 Report Share Posted September 5, 2018 Haven’t had any luck in my search online for a rebuild kit for a 71B. Seems everyone offers everything else though. Ive been in contact with two companies that deal with the 71 trans kits and both are asking me to pull the trans apart for ID numbers and measurements. If anyone has any info or internal measurements that I can share with them to help find me the correct kit it’d be much appreciated. Btw, current trans is in unknown internal condition. Will most likely rebuild it prior to installing with fresh rebuilt L20B Cheers 1 Quote Link to comment
datzenmike Posted September 5, 2018 Report Share Posted September 5, 2018 The 5 speed wasn't available till '77 so what is your 5 speed out of? There are no ID numbers inside. 1 Quote Link to comment
Perez620 Posted September 5, 2018 Author Report Share Posted September 5, 2018 I was told there are numbers on a few of the bearings internally that will help identifying a kit. Its out of a ‘77 620 1 Quote Link to comment
banzai510(hainz) Posted September 5, 2018 Report Share Posted September 5, 2018 I know there was a place that had the 200sx 5 speeds rebuild kits. Cobra or soemthing like that 2 Quote Link to comment
datzenmike Posted September 5, 2018 Report Share Posted September 5, 2018 Auto Zone... https://www.autozone.com/drivetrain/manual-transmission-rebuild-kit ... just bearings and gaskets, case to adapter is a sealer. Uses the correct 56mm counter bearing. https://www.midwesttrans.com/webapp/partView.do?partNum=MWT104... MWT104 bearing and synchro kit for 280z ('77-'78) 810 ('78-'80) and Maxima ('81-'84) is the same as yours, about $61 There are more but I have to go to work. 3 Quote Link to comment
Perez620 Posted September 5, 2018 Author Report Share Posted September 5, 2018 Fantastic Mike. I actually contacted that same company Midwest trans yesterday and they were unsure which kit I needed. I suppose I’ll just tell them I need that MWT104 kit if you think that’s the correct one Quote Link to comment
datzenmike Posted September 5, 2018 Report Share Posted September 5, 2018 MWT104 kit... if a '77 620, the following are the same... Pre 1980... 77-79 620 78-80 810 77-78 280x 79 280zx only the one year There were some changes to the 80 and up transmissions but likely would work up through 84 when the counter bearing changed from 56 to 62mm Quote Link to comment
Perez620 Posted September 5, 2018 Author Report Share Posted September 5, 2018 Great thanks again for the help mike! Quote Link to comment
mccuistion Posted September 5, 2018 Report Share Posted September 5, 2018 AWESOME! this info is super helpful as i ran into the same problem. I got an unknown condition 71B and when draining the fluid it looked so metallic it could pass for liquid galvinize.... I found countless kits for the 71c and others but it seems like the B is an afterthought for companies. I'll have to call midwesttrans for the MWT104 and ask to add the synchros to go with it. Quote Link to comment
Crashtd420 Posted September 5, 2018 Report Share Posted September 5, 2018 Looks like I'm gonna jump in on this too... Mike will these kits work for the short 71b 5spd also? Quote Link to comment
datzenmike Posted September 6, 2018 Report Share Posted September 6, 2018 The short is an '80 or newer 720 box. Have a look on that site. If it lists one for a 720 it should work for the shorty. Only difference is the mainshaft and the tail are shorter. The gears, bearings and synchronizes are the same. '85 and up use a 62mm counter bearing '84 and older are all 56mm. 2 Quote Link to comment
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