Transmission & Drivetrain Gearboxes, Differentials, Clutches

Synchro spring...what is its Mechanical Function?

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Old Nov 1, 2012 | 11:41 AM
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Default Synchro spring...what is its Mechanical Function?

Can someone make me see what it does?
Trying to become one with my gearset.
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Old Nov 1, 2012 | 02:58 PM
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Default Re: Synchro spring...what is its Mechanical Function?

Interference fit with the teeth on the synchro sleeve to retain the sleeve engaged with the gear (keep the the shifter in gear).
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Old Nov 2, 2012 | 05:34 PM
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Default Re: Synchro spring...what is its Mechanical Function?

Thanks..I see it now.

Can I use the scha and reverse change from a GSR gearset in my supposedly B16 tranny?
And the/which synchro sleeves /hubs can interchange?
Screwed up a good tranny from busted linkage bushings I think (at roll-pin area)..and prolly a failing slave cyl. a while back.
Grinds, lock-outs in the heat of battle took their toll.
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Old Nov 8, 2012 | 06:51 AM
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Default Re: Synchro spring...what is its Mechanical Function?

Originally Posted by B and B
Thanks..I see it now.

Can I use the scha and reverse change from a GSR gearset in my supposedly B16 tranny?
And the/which synchro sleeves /hubs can interchange?
Screwed up a good tranny from busted linkage bushings I think (at roll-pin area)..and prolly a failing slave cyl. a while back.
Grinds, lock-outs in the heat of battle took their toll.
Shift change assembly parts are all interchangeable as well as the reverse change parts.

Sleeves and hubs are the same on hydro B16 and GSR transmissions
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Old Nov 8, 2012 | 06:31 PM
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Default Re: Synchro spring...what is its Mechanical Function?

Thanks James...
Your tracking says my parts r in Austin..should get them tomorrow and start reassembly of this Frankenstein.
At least the GSR gearset I scored last year is in really good shape except for one gear...lucky grab, guy dropped it off at last year's D.I. Palooza
Not changing gears..just reverse idler, 3/4 sleeve/hub, reverse selector, prolly second sleeve, havent taken down mainshaft yet. Carbon Synchros and new springs, seal set.
And plenty oil!

IFO is in Ennis this Sunday...Woot!
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Old Nov 9, 2012 | 12:05 AM
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Default Re: Synchro spring...what is its Mechanical Function?

Originally Posted by James@Synchrotech
Shift change assembly parts are all interchangeable as well as the reverse change parts.

Sleeves and hubs are the same on hydro B16 and GSR transmissions
i thought that the gsr and b16 had different diameter sleeve synchros and springs for 3-4 gears no?

from what i remember b16/ls have the same diameter sleeves/sliders 1-5/r and gsr have the same size slier 1-2 and 5-r but the 3-4 is larger diameter like itr/ctr
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Old Nov 9, 2012 | 04:42 AM
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Default Re: Synchro spring...what is its Mechanical Function?

Originally Posted by siregcivic
i thought that the gsr and b16 had different diameter sleeve synchros and springs for 3-4 gears no?

from what i remember b16/ls have the same diameter sleeves/sliders 1-5/r and gsr have the same size slier 1-2 and 5-r but the 3-4 is larger diameter like itr/ctr
ls have the smaller 3-4 sleeve, b16/gsr are the larger ones.
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Old Nov 9, 2012 | 08:01 AM
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Default Re: Synchro spring...what is its Mechanical Function?

I wish I could find just the springs for the 3-4 gears on GSR transmission. I have 978976 for the 1-2 and 5-R that are in good shape and would rather buy a bunch of 3-4 than spend 50 bucks for 1-5
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Old Nov 9, 2012 | 02:15 PM
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Default Re: Synchro spring...what is its Mechanical Function?

Originally Posted by mikesrex
I wish I could find just the springs for the 3-4 gears on GSR transmission.
D-series 1st/2nd synchros and springs are the same as B-series vtec 3rd/4th if that helps you out any. It's pretty easy to find whole D-series transmissions for less than $40.
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Old Nov 9, 2012 | 06:30 PM
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Default Re: Synchro spring...what is its Mechanical Function?

Originally Posted by 94EG8
D-series 1st/2nd synchros and springs are the same as B-series vtec 3rd/4th if that helps you out any. It's pretty easy to find whole D-series transmissions for less than $40.
hmm well I have two D series transmissions laying around, i guess we all know what's going to happen to them lol

thanks for the info
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Old Nov 10, 2012 | 08:22 PM
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Default Re: Synchro spring...what is its Mechanical Function?

Originally Posted by 94EG8
D-series 1st/2nd synchros and springs are the same as B-series vtec 3rd/4th if that helps you out any. .
Is it just the synchronizers and springs that interchange?
Can the sleeves or collars be swapped?
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Old Nov 11, 2012 | 04:03 AM
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Default Re: Synchro spring...what is its Mechanical Function?

Originally Posted by B and B
Is it just the synchronizers and springs that interchange?
Yes.

Originally Posted by B and B
Can the sleeves or collars be swapped?
No, they're completely different.
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Old Nov 12, 2012 | 07:35 AM
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Default Re: Synchro spring...what is its Mechanical Function?

Originally Posted by mikesrex
I wish I could find just the springs for the 3-4 gears on GSR transmission. I have 978976 for the 1-2 and 5-R that are in good shape and would rather buy a bunch of 3-4 than spend 50 bucks for 1-5
I can sell you 3-4 springs seperately if you need them. Let me know
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Old Nov 24, 2012 | 11:10 PM
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Default Re: Synchro spring...what is its Mechanical Function?

Finally took it out tonight. Tranny feels great.
Thanks you James and Honda Bull and IN VTEC.
My linkage bushings were all busted out (which caused this mayhem, I think) so after almost two hours in the hardware aisles, I fitted the shifter with a bronze bushing/nylon insert and bitchpin ujoint with nylon guts and it's never felt this good. Gears aren't even in the same place, lol. Zero slack.
I was surprised how much **** was caked up inside the mainshaft and countershaft. I started scrubbing with a round wire brush and that muddy **** of lube and metalflake came out for awhile. Got that bitch surgically clean... even scrubbed the diff down ... tranny looked like new inside and out..every piece scrubbed with carb cleaner and Simple Green.
I was scared to fire it up after weeks being down..u know the feeling...
btw, took the opportunity to fill my tired mounts with urethane and install the new
CC stg. 4 and Fidanza 7.5 pounder I've been hoarding.
Wow, it's nice to have a smooth tranny. CC says to break that **** in slowly...
gonna be hard to go 500 mi. before abuse.
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