gear scrunches from 3rd>4th>5th on high revs

[rychu]

hey guys, i realised that when i push my car and revs go high shifting from 3rd>4th and 4th>5th quickly scrunches

anyone have any idea whats going on?

like syncro, or clutch or not enough fluids etc?

[M@lew]

When was the last time you changed the gearbox fluid?

[rychu]

When was the last time you changed the gearbox fluid?

long time ago?

[Karl]

Yer do gear box oil 1st

[stienerv2]

agreed, i had an issue with shifting from 1st to 2nd and new mtf helped it.

Its one of the cheaper things to do first too

[M@lew]

long time ago?

More or less answered your own question.

[rychu]

nice (: cuz im not keen to buy new syncros or something LOL

[JDMaccessories]

Rule number:

1; Change gearbox fluid (As per M@lew earlier post), put some gear repair mixture with the fluid
2; If this doesn't solve the crunching, remove the box and inspect for damages to bearing and gears
3; If gears synchros seem to be worn or have lost teeth its time for new synchros

For the oils we use & recommend:

Nulon Gear-repair G70
Castrol VMX80 oil should need 2-3LT in the box

-Marcus

JDMaccessories

Email: Enquiries@jdmaccessories.com.au

[ChargeR]

As above change the fluid and take a good look at the quantity and quality of what comes out, also check all the aspects of the clutch system(throw adjustment, slave and master for leaks etc.). If the clutch isn't disengaging correctly then it could cause the issues you describe.

[tinkerbell]

hey marcus, just a friendly reminder that this is the technical forum, not a vendor forum.

all non-technical replies will be edited or deleted.

[JDMaccessories]

@tinker

Not sure what isn't technical about my post, I'm trying to help
People out ATM with some info which I encountered throughout the years

Thank you for your assistance and I will keep my posts strictly for technical guidance


-Marcus

JDMaccessories

Email: Enquiries@jdmaccessories.com.au

[tinkerbell]

i have edited it for you.

rychu - you can also refer to the existing gearbox oil thread: http://forum.clubitr.com.au/showthread.php?t=227