imported_tunnelvision

haha yeah i know it sounds like I dont know how to drive but, no matter how long i have the clutch down and shift into 3rd gear most of the time i hear grinding! whats the deal? i hear some people saying "their syncro is gone?" whatttttt?????? I have 355,000+km on my car so im sure thats a factor also haha

DumbasSi

What kind of car? Honda, Corvette, Bimmer?

355 is pretty high, so it is easily possible the syncros are worn.

redwards

wouldnt be surprised if its the syncros

egb20

its the blocker ring in your second to third synchroniser they wear out over time and cannot mesh the two speeds together before the dogteeth try and slip over to that gear thats the grinding your hearing. Trany rebuilds and parts are expensive you probably can find a used trany for cheaper then just rebuilding that synchro asuming you have a older civic.

Newbreed

I had the same problem. Swapped out the trany, no grinding since.

D.T.P

I had the same problem. Instead of rebuilding it, I got another one from tigerjapanese for 200. No problems since.

civicEJ1

iTrader: (2)

i put ac delco manual tranny fluid and it went away

D.T.P

I heard the GM syncromesh fluid helps too. You can buy it at GM dealerships.

civicEJ1

iTrader: (2)

its pretty expensive stuff but every time i shiffted hard into 3rd from second it grinded i piut that stuff in and **** feels so nice like KY smooth

jdm ek4

I had the same problem on my old motor before and i also put in the GM Syncromesh and the problem went away. 1 bottle cost $10 and its 1 quart in a bottle. Have you ever changed your tranny fluid since youve owned that car?

DumbasSi

My 98 Civic Si had a serious problem shifting from 2-3. I dont mean high rpm quck shifts either, but normal slow shifts it would grind. The car was still new, so Honda replaced the syncro set under warranty. I started using the GM Syncromesh friction modified (make sure you get the fm kind) after one of the Honda Techs recommended it. Shifted perfect afterwords.

Even in my new Si I use Amsoil MTF.

imported_tunnelvision

DambasSi thats exactly what i have. 98 si with 355,000km+ on it,. so where do i put this transmission fluid in? i just had a new clutch and flywheel installed and i didnt see where i could put fluid?

DumbasSi

With the amount of k's your car has, a simple MTF change might not help. But it probably wouldnt hurt either. When was the last time it was changed? I think Honda recomends every 50,000k's or so.

Fill hole is top left, drain is bottom right. Takes about 2 quarts. Use a funnel and a long tube and fill from above. I'll see if I can find my old DIY.

D.T.P

hey whats with all the oil over there? for a moment i thought you used my old pic from back in the day when i was leaking tranny fluid out the driveshaft seal lol.

DumbasSi

When you fill it, you know its full when it starts to leak out of the fill hole. nThere is no dip stick like the oil.

D.T.P

true. i had a rag catch all the oil when it overfilled since if i make a mess in my garage, my parents will kill me lol.