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[jdmhatchracer94]

ok have a 90-91 s1 tranny. now on all trannies I have done 94+ have a syncro on top of the main shaft for reveres. I pulled this one apart ans there is nothing there? I looked in the honda manual and it doesn't show this year tranny in it.  I'll try to get pics.

[snm95ls]

Look it up in the parts catalog using one of the online dealers.

www.acuraautomotiveparts.org is one.

[crttaz]

92-01 have the 6th synchro, 90-91 USDM and JDM B16 do not.

Even more confusing is there are two different sizes for 3-4 synchros. Some are D sized, other are B sized.

[snm95ls]

92-01 have the 6th synchro, 90-91 USDM and JDM B16 do not.

Even more confusing is there are two different sizes for 3-4 synchros. Some are D sized, other are B sized.

The LS gear sets use the smaller sized synchros as the gears on the mainshaft as smaller diameter because of the lower numberical ratio.

1 and 2 are the same in the vast majority of B series transmissions.  Only 3 first gears options, and two second gear options that I am aware of.  At least for large spline transmissions this is the case.

Not really confusing unless you are privy to some other info that I am not aware of.

[jdmhatchracer94]

92-01 have the 6th synchro, 90-91 USDM and JDM B16 do not.

Even more confusing is there are two different sizes for 3-4 synchros. Some are D sized, other are B sized.

Thanks thats what I needed to know cause all I could find was info on the 92+ mainshaft but no 90-91. So does the bearing just ride on the hub?

[crttaz]

92-01 have the 6th synchro, 90-91 USDM and JDM B16 do not.

Even more confusing is there are two different sizes for 3-4 synchros. Some are D sized, other are B sized.

Thanks thats what I needed to know cause all I could find was info on the 92+ mainshaft but no 90-91. So does the bearing just ride on the hub?

Just like a D Series IIRC.

[crttaz]

92-01 have the 6th synchro, 90-91 USDM and JDM B16 do not.

Even more confusing is there are two different sizes for 3-4 synchros. Some are D sized, other are B sized.

The LS gear sets use the smaller sized synchros as the gears on the mainshaft as smaller diameter because of the lower numberical ratio.

1 and 2 are the same in the vast majority of B series transmissions.  Only 3 first gears options, and two second gear options that I am aware of.  At least for large spline transmissions this is the case.

Not really confusing unless you are privy to some other info that I am not aware of.

Only what I've been learning from HondaTech with Synchrotech and Gearspeed posting info. I only hit up the tranny forum EXCEPT for the Junk2 bullshit that went down last week.