styles

if i shift about 5,000 rpm or more to 3rd gear it always grinds. i tink its the clutch or is it the idiot before me who didn't know how to drive stick ?

civicEJ1

iTrader: (2)

change the tranny fluid and use GM AC Delco Synchro mesh

Trybal

Are you thinkin about foaming at high heat with old fluids?

styles

i changed the fluid 2 months ago to mobil 1030. but the GM AC Delco fluid will be ok in my gearbox

ol Dusty

iTrader: (2)

^^there's your problem. why did you use motor oil in your honda transmission? maybe I'm wrong here but honda recomends honda MTF, I've heard of the GM synchro mesh and from what I know about it, sure sounds like a solid idea. I hope you didn't ruin your tranny but if I were you i'd put the proper fliud in now.

an oh yeah, one other often over looked thing when it comes to tranny grinds, did you swap in a short shifter? without a better slave and adapted driving style they throw off shift timming and then you develope a grind into gears that you migh shift hard into, like i don't know say maybe 3rd on the highway.

D.T.P

I remember when I cut a short shifter [don't ask why, was stupid etc.] if I was to push to 4k-5k rpm 2nd and 4th would grind. Then I got another short shifter, never grind it again.

peterf.

3rd gear synchro is bad

jdm ek4

It could be the syncro as stated above me but when i had my single cam motor, it grinded from 2nd to 3rd gear. So i switched to GM Syncromesh and the problem went away until i swapped motors.

styles

honda recommends to use either 10w30 or honda manual transmission fluid. Same thing with Acura Vigors and older Integra's but im going to try the AC Delco fluid

civicEJ1

iTrader: (2)

u can use 1030 in ur tranny, but it has to be synthetic, but honda does reccomend HONDA MTF.

and it does make a big difference using the right fluid vs regular ENGINE oil.

but i had a 2nd to 3rd gear grind also, didnt think changing the fluid to the gm synchromesh would help so much...and i jhave a short shifter, no grinds!

hope it goes away bro

gavin.p89

Just my 2 cents did a fluid change on my buddy's 92 si and used 10w30 synthetic, and it was grinding like no tommorw. Read up on it and then re did wuth castrol 10w30 and not grinds nothing. And it has been 3 years.
Just my 2 cents, and i just did it on my 98 civic and i used 10w30 as well.

Sirberner

iTrader: (3)

the ACDelco (GM) fluid is Synchromesh "friction modified"
part # 10953509

give that a try good luck

honda has a new fluid to better than the old one.

RadEp3

i dunno about the gm ish. i heard it was ok but i use Royal purple Synchromax. The **** is wicked. And their oil Owns too....

suno_eg

iTrader: (1)

Same here.

Casa_nova

3th gear sincro it is gonne and the cluch at the same time i had the same problem i replace the gear sincro and the cluch and fix the problem

d16y8

Motor oil can be used in a Honda transmission in an emergency. I had Royal Purple 5w30 full synthetic in my tranny for a few days and it made it grind like crazy. I switched to GM Synchromesh Friction Modified and the shifts became smoother and all the grinds went away. I've since had it in my transmission for about 25k.


On a side note, everyone I know who has gone to buy it always comes back from the GM dealership with the same story:

"Do you guys have synchromesh?"
"Is it for a Honda?"
"Ya, how did you know?"
"You Honda guys are the only ones who buy this stuff!"

jdm ek4

Lol at the same story, i got asked the same questions from the GM dealership on the Queensway and Eastmall. Is that the one you go to?

d16y8

Yeah