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Joined: May 2003
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spaztikid
dikitzaps
spaztikid Nov 10, 5:51am - #322504 
dikitzaps
1974 Toyota Celica

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Posts: 5,346
LA
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
Specialist
QTRMLR_1 Nov 10, 11:02am - #322505 

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2002 Toyota Celica

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Los Angeles, CA
wow what's the project? just curious.

I get my kicks on EC.
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jway83
Member
jway83 Nov 10, 1:10pm - #322506 
2000 Spec Blue Mica Toyota Celica
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2000 Toyota Celica

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Greensboro, NC
stainless steel synchros would be my guess

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sickcelica696
Specialist
sickcelica696 Nov 10, 1:16pm - #322507 
2000 Liquid Silver Toyota Celica
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2000 Toyota Celica

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Annapolis, MD
talk to c2gas, he made a new tranny synchro set, straight cut
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AZZKIKR
SHO - NUFF
AZZKIKR Nov 10, 2:28pm - #322508 

SHO - NUFF
2003 Toyota Celica GT

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ATL GA
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
Senior Member
Blue_Bomber Nov 10, 10:23pm - #322509 
2000 Spectra Blue Mica Toyota Celica
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2000 Toyota Celica

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Freehold, NJ
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
Senior Member
AzNRaCeR Nov 11, 12:50am - #322510 
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2000 Toyota Celica GTS

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Ft. Laud. FL/FSU Tallahassee
what are the advantages?

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Blue_Bomber
Senior Member
Blue_Bomber Nov 11, 12:57am - #322511 
2000 Spectra Blue Mica Toyota Celica
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2000 Toyota Celica

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Freehold, NJ
Longer synchro life.
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AzNRaCeR
Senior Member
AzNRaCeR Nov 11, 1:01am - #322512 
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2000 Toyota Celica GTS

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Ft. Laud. FL/FSU Tallahassee
i see...so whats the average stock syncro life

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Blue_Bomber
Senior Member
Blue_Bomber Nov 11, 2:39am - #322513 
2000 Spectra Blue Mica Toyota Celica
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2000 Toyota Celica

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Freehold, NJ
Depends on how fast and hard you shift. The faster and harder, the more the synchros wear.
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RookieGTS
Boobie Vision
RookieGTS Nov 11, 2:55am - #322514 

Boobie Vision
2000 Toyota Celica

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925 Nor Cal
really?? Synchros im curious? how do you know when they go bad? and need to be replaced?
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Blue_Bomber
Senior Member
Blue_Bomber Nov 11, 2:58am - #322515 
2000 Spectra Blue Mica Toyota Celica
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2000 Toyota Celica

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Freehold, NJ
You'll know they're bad when you have trouble shifting into gears, especially in high RPMs.
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RookieGTS
Boobie Vision
RookieGTS Nov 11, 2:59am - #322516 

Boobie Vision
2000 Toyota Celica

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925 Nor Cal
and whats the purpose of them? confused
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Blue_Bomber
Senior Member
Blue_Bomber Nov 11, 3:03am - #322517 
2000 Spectra Blue Mica Toyota Celica
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2000 Toyota Celica

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Freehold, NJ
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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RookieGTS
Boobie Vision
RookieGTS Nov 11, 3:04am - #322518 

Boobie Vision
2000 Toyota Celica

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Posts: 2,979
925 Nor Cal
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 Nov 11, 3:10am - #322519 
dikitzaps
1974 Toyota Celica

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Posts: 5,346
LA
they are in the tranny...


its not really a DIY mod unless you have mechanical experience.
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Blue_Bomber
Senior Member
Blue_Bomber Nov 11, 3:10am - #322520 
2000 Spectra Blue Mica Toyota Celica
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2000 Toyota Celica

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Posts: 744
Freehold, NJ
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 Nov 11, 3:13am - #322521 
dikitzaps
1974 Toyota Celica

Joined: May 2003
Posts: 5,346
LA
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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RookieGTS
Boobie Vision
RookieGTS Nov 11, 3:46am - #322522 

Boobie Vision
2000 Toyota Celica

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Posts: 2,979
925 Nor Cal
damn! eek Thx for the info fellas! Appreciate it lotz! wave
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