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Joined: May 2003
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spaztikid
dikitzaps
spaztikid
dikitzaps
1974 Toyota Celica

Joined: May 2003
Posts: 5,346
LA
Nov 9, 10:51pm - #322504 
complicated question - synchro's

i need specs and pictures of the synchro's for all the gears in the 5 & 6 speed tranny for the celica's.

any info you have... cad diagrams would be best...

i might end up having to buy a set from toyota and return them after the project if i cant get the info i need on the net.

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QTRMLR_1
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QTRMLR_1

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2002 Toyota Celica

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Posts: 1,376
Los Angeles, CA
Nov 10, 4:02am - #322505 
wow what's the project? just curious.


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jway83
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jway83
2000 Spec Blue Mica Toyota Celica
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2000 Toyota Celica

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Greensboro, NC
Nov 10, 6:10am - #322506 
stainless steel synchros would be my guess


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sickcelica696
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sickcelica696
2000 Liquid Silver Toyota Celica
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2000 Toyota Celica

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Annapolis, MD
Nov 10, 6:16am - #322507 
talk to c2gas, he made a new tranny synchro set, straight cut

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AZZKIKR
SHO - NUFF
AZZKIKR

SHO - NUFF
2003 Toyota Celica GT

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ATL GA
Nov 10, 7:28am - #322508 
yeah, you'd be better off with the straight cut set...it would be cheaper to do in the end, and more reliable too

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Blue_Bomber
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Blue_Bomber
2000 Spectra Blue Mica Toyota Celica
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2000 Toyota Celica

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Freehold, NJ
Nov 10, 3:23pm - #322509 
Stainless steel or any type of material synchros besides brass (or is that bronze confused ) can't be used on our cars because of the shaft design. I don't remember the specifics, but there's a post on New[/b]Celica[b].org about it (though the site is down at the moment).

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AzNRaCeR
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AzNRaCeR
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2000 Toyota Celica GTS

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Ft. Laud. FL/FSU Tallahassee
Nov 10, 5:50pm - #322510 
what are the advantages?


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Blue_Bomber
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2000 Spectra Blue Mica Toyota Celica
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2000 Toyota Celica

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Freehold, NJ
Nov 10, 5:57pm - #322511 
Longer synchro life.

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AzNRaCeR
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AzNRaCeR
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2000 Toyota Celica GTS

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Ft. Laud. FL/FSU Tallahassee
Nov 10, 6:01pm - #322512 
i see...so whats the average stock syncro life


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Freehold, NJ
Nov 10, 7:39pm - #322513 
Depends on how fast and hard you shift. The faster and harder, the more the synchros wear.

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925 Nor Cal
Nov 10, 7:55pm - #322514 
really?? Synchros im curious? how do you know when they go bad? and need to be replaced?

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Freehold, NJ
Nov 10, 7:58pm - #322515 
You'll know they're bad when you have trouble shifting into gears, especially in high RPMs.

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925 Nor Cal
Nov 10, 7:59pm - #322516 
and whats the purpose of them? confused

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Freehold, NJ
Nov 10, 8:03pm - #322517 
To help synchronize the input and output gears before they engage when shifting. Without them, you'd have to rev match on every single shift you made.

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925 Nor Cal
Nov 10, 8:04pm - #322518 
ooh ok...damn they play a very important role in our cars then. Also where are these synchros located in our cars? and if needed to be changed? Could you do it yourself? Or is it best to have a professional do it?

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spaztikid
dikitzaps
spaztikid
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1974 Toyota Celica

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LA
Nov 10, 8:10pm - #322519 
they are in the tranny...


its not really a DIY mod unless you have mechanical experience.

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Freehold, NJ
Nov 10, 8:10pm - #322520 
They're inside the tranny case, right next to each of the forward gears. They should only be brought to an experienced shop to replace. I've heard of a few shops refusing people who wanted their synchros replaced since it's such a complicated job. The new gears and synchros need to be pressed onto the shafts, and if the pressure isn't applied evenly, teeth can break off, or the gears/synchros can even crack. Not an easy job at all, and probably pretty expensive.

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spaztikid
dikitzaps
spaztikid
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1974 Toyota Celica

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LA
Nov 10, 8:13pm - #322521 
yeah often times its about the same price to put in a new tranny as it is to change synchro's...

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925 Nor Cal
Nov 10, 8:46pm - #322522 
damn! eek Thx for the info fellas! Appreciate it lotz! wave

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