swizz977

i plan on getting a rebuilt y8 tranny from syncrotech but im wondering if i should go with their carbon syncros or orm ones

i dont really beat on my car or race it but what would be the pros and cons of the carbons?

Tegra206

iTrader: (2)

If you aren't gonna beat on it, just go oem and save the money maybe, unless you think you might eventually start to upgrade and then beat on it down the line, then go carbon syncros!

swizz977

well what are the differences in shifting?

NotARaCist

iTrader: (1)

I went to Synchrotech carbon synchros when I rebuilt my transmission. No noticeable difference for a DD.

y7civic

I have carbon synchros and i beat on it every once in a while, you can't really feal a difference. So far it's holding up and I am only at 10lbs of boost.

swizz977

so theres no difference in the shifting at all? whats the point of them then?

TomCat39

I was under the impression they will last longer, especially under abuse.

swizz977

is there any difference in the shifting feeling?

NotARaCist

iTrader: (1)

They should let you shift faster, but the average Civic owner doesn't have the kind of shifting setup or driving ability to know the difference.

94EG8

They last longer, but the bigger benefit is they will slow the gear down quicker so there's less wear on sleeves and hubs when shifting quickly. They do make a difference shifting at high RPM. For the very little bit extra they cost I'd use them.

swizz977

are these them number 9?? the oem ones are 150..
http://www.hondaautomotiveparts.com/auto/jsp/mws/prddisplay.jsp?inputstate=5&catcgry1=CIVIC&catcgry 2=2000&catcgry3=2DR+EX&catcgry4=KA5MT&catcgry5=MT+ MAINSHAFT+%28SOHC%29

and the carbon ones here are 200
http://shop.synchrotech-transmissions.com/Pro-Series-Carbon-Synchro-Set-1-5-89-00-SYN-111.htm

swizz977

i need a y8 tranny thisy7 one sucks so bad

dodt

i hear ya

swizz977

what exactly do they mean when they say that the carbon synchros help slow the gear down more

94EG8

They're much more aggressive than brass in terms of how they grab the gear cone. A synchro is essentially just a brake to slow the gear down and carbon provides a lot more friction than brass does.

If you try a brass synchro on a gear and try to turn the synchro against the gear cone it's usually possible. A carbon synchro will normally lock right on there.

swizz977

**** i just talked to them they dont use oem honda for thr brass synchros they "make there own" brass ones...

hmm should i just send them some real oem ones or should i just use theres..

he actually wanted me to get there carbon ones

ugh idk wat to do i just shipped my tranny out to them today

tony_2018

What is it you are trying to accomplish by sending them your old ones? I haven't seen any issues with them making there own brass synchros and selling it, or else we'd be seeing the transmission thread with some of that hateness.

TomCat39

Either use their brass synchros as they are just as good if not better than OEM or do as 94eg8 suggests and spend a touch more and get the carbon ones as they are far superior in every aspect.

Syncrotech is well known to be one of THE top notch transmission shops and everyone who cares about their Honda's uses them and their products, all with great success and satisfaction. Their quality is over and beyond most everyone else.

Really, just go with the carbon synchros, not only will they outlive OEM or any third party brass synchros, they perform better in all conditions. It's that simple. And the cost difference is not even enough to be bother with. Cheaper than doing another set of brass synchros in X amount of years.

swizz977

when i swap trannys what other seals and gaskets should i replace besides the rear main seal??

TomCat39

On the motor? The only impossible to get to one is the rear main when the tranny is installed, so that's the only critical seal when the tranny is off to be replaced.

The tranny itself has seals you would consider replacing if you are doing it yourself, if you have a shop doing it, you could request to have the shift linkage seals/boots replaced, the ISB seal replaced and both axle seals replaced.

The rest of the motor seals can be accessed regardless if the tranny is in the car or not so can be done now or later without issue.

tony_2018

Wait, so are you buying a rebuilt or are you rebuilding one of your own? If you buy one from synchrotech than you shouldn't have to worry about any seals to replace as they take care of all of that.

TomCat39

Yeah, but OP seems to be asking about seals on the motor, I just expanded for anyone future or present that may be looking at rebuilding their own transmission as well as commenting on the motor seals to contend with.

Also, I would assume a shop would replace all the seals on a rebuild, but you never know and may wish to know what seals have the most need to be replaced in a rebuild situation just to know the shop is doing the full meal deal. Not all shops are equal.

94EG8

That's for 5th gear synchro only (it also includes the sleeve, hub and spring)

Synchrotech makes a lot of their own parts, they also make their own hardened sleeves and hubs, synchro springs, as well as the 3rd gear synchro gear for B/H-series vtec transmissions. Before synchrotech you couldn't get most of those parts on their own (you could get brass synchros from Transparts, but they sucked) I've used most of these parts with the exception of Synchrotech's brass synchros, I've had great luck with them, and their carbon synchros.

As far as OEM synchros go. You can't buy a set of synchros from Honda as a set, you have to get them with the sleeves and hubs, and they're expensive, and other than 5th gear they're discontinued anyway.

If you want my 2 cents, spend the extra $50 buy the carbon ones. That said Synchrotech's brass synchros should be just as good as the OEM ones.

tony_2018

+1, save the headache and get it all from Synchrotech.

swizz977

ok yea im haveing them do a full rebuild with carbon synchros .. ill just do the rear main seal when its out.. also need to figure out if i want lsd..