When I shift from 2nd to 3rd and if I got 4500 rpms or higher my gears will make a grinding sound like i mishift.... what could be the reason for this...?

 

syncro's are going bad

 

what is syncros? and how would i fix it..

 

Syncros are little notched pieces that help the gears slip and mesh together. They live inside the tranny. You need to get the tranny rebuilt before you toast the whole thing. I would advise for you to not try high RPM shifting. You can nurse it along for quite some time if you take it easy.....if you hammer it it will die that much sooner.

By the way have you serviced the tranny lately(changed the oil)?

 

yes the car had been well maintained it... how long would it be before it would start damage'n my whole tranny if i dont rebuild it and about how much would it cost? could i just get the syncros replaced?

 

Dream team,

My EF has exactly the same symptom before and I was told by many mechanics that it's the synchros. They claimed that repairs will be expensive. The crunching noise sounds bad and you could not drive the car hard anymore.

However, a Honda specialist recommended me to drain out the Redline high performance gear oil and change it to a normal single-grade engine oil (yes, engine oil) (forgotten the number, but it was a Shell engine oil) and to add in a tube of Bardahl (German) gearbox additive.
It solved my problem 100%!!!!!!!!!!!!!!! I was shocked!

Now, I can shift at redline at any speed and in any gear, and my gearbox is buttery smooth!!! Absolutely no more crunching sound.
Beautiful. Perhaps you can try this first before jumping into expensive repairs.

 

That is up to the mechanical gods...could be years, could be next week. Just go a little easy on it.
You can do it yourself...do a search on tranny swap, or pay a good shop anything from 500.-1000.
Sure, but if you are inside already, get the input bearing, throw-out bearing, and check the gear packs for wear. Any decent shop would do it anyhow.

 

any one got more info on this????? my car also does this from 2nd to 3rd and i have to hold the clutch in till the revs drop before i can shift nicely... i knew it was the syncro, but didnt know how much it would cost and would like to try this first..

 

The gear box needs a good servicing mate...Get some proper oil and greasing done...Should be lasting for more than you'll ever imagine....But if u can afford it,time to change the gearbox into a sporting one with short shifter cause u mentioned u like shifting at high revs.....