slight gearbox crunching sound, any ideas??

**Per10d** · 27-09-2005 06:36 PM

lately i've noticed that my gear box makes a slight crunching sound when i change into 4th gear quickly... although if i do it slowly and at the right rev range it doesn't crunch.

you guys have any idea what it could be and if its a major problem or something small?

cheers in advance.

**lighty01** · 27-09-2005 07:10 PM

i got a similiar "problem".. its only when i quick shift straight down.. ie. from 1 to 2 and from 3 to 4... someone said the crunching noise is from the syncros..

**SKREMN** · 27-09-2005 07:33 PM

Get some quality oil for your box
i have get RED LINE oil in mine
i think its called SHATTER PROOF
cost $120 for 3.7 ltrs
but works like a dream
my car used to crunch allways in 3rd and little in 4th
now only slightly in 3rd when i do it quick

**chinkdood** · 27-09-2005 07:40 PM

i have the exact same problem
but i was told by mechanics taht the synchros are warn out.

any of u guys have a short shift ?

**VTi_b0i** · 27-09-2005 07:44 PM

i do lol and i tend to crunch atleast twice a week

i know its heaps bad but i get lazy sumtimes and yehh now days my box dont feel all that smooth... is it hard to change the box oil?

**SKREMN** · 27-09-2005 10:46 PM

Its easy just need a funnel and hose
garden hose will do just gotta cut it
one plug drains one plug fills its full when it overflows so cant overfill it
simple

I got a short shifter aswell

**typsy** · 27-09-2005 10:51 PM

I used to have that problem when i shift to 3rd gear. I changed my gearbox oil with genuine honda gearbox oil and problem was solved.

**ECU-MAN** · 27-09-2005 11:02 PM

more than likely your synchro's are starting to wear.

change your oil and see how you go.

**95_CVC** · 27-09-2005 11:22 PM

Mine crunchs sometimes when i put it in reverse.

**zoopsta** · 28-09-2005 01:17 AM

i heard the 'reverse crunching' is actually common in all civics

**dcdc** · 28-09-2005 01:30 AM

Originally Posted by SKREMN

Get some quality oil for your box
i have get RED LINE oil in mine
i think its called SHATTER PROOF
cost $120 for 3.7 ltrs
but works like a dream
my car used to crunch allways in 3rd and little in 4th
now only slightly in 3rd when i do it quick

redline shockproof