manual gearbox

Galixia · #1 29-06-2008, 09:53 PM

hey, i have a 5 speed and when i go to change gears fast it doesnt let me... its like i have to give the gearbox a few seconds before the gear will go in. so i want to know whats wrong with it and how do i fix it so it doesnt take a few seconds each time to change gears and so the gears can go in smoothly?

Holdfast · #2 29-06-2008, 10:39 PM

Could be the Synchros are stuffed??

Like, as you could imagine when you use the gear shifter all it does is moves the shift rails and forks.

On the forks are the synchro hubs and of course inside them are the synchro rings.

I'm wondering if the rings are worn?

But I'm just guessing

Galixia · #3 30-06-2008, 02:54 PM

so how do i check that to see if it is?

eaton v8 · #4 01-07-2008, 03:54 AM

i had the same problem for me it was sincros in the end you had to be very harsh

with a little bit of luck to get it in it will only get worse sooner the rebuild the cheaper it will be

Holdfast · #5 01-07-2008, 08:19 AM

Quote:

Originally Posted by Galixia

hey, i have a 5 speed and when i go to change gears fast it doesnt let me... its like i have to give the gearbox a few seconds before the gear will go in. so i want to know whats wrong with it and how do i fix it so it doesnt take a few seconds each time to change gears and so the gears can go in smoothly?

Many of the forum members helped me when I had problems with my 5 speed manual.

In particularly "Mag" and "Stewart1000".

"Mag" diagnosed the problem straight away and was absolutely correct.

"Stewart1000" was rebuilding his MF5 5 speed at the same time and helped out with supplying pictures etc.

The forum has a lot of info on gearbox rebuilds so if you need more advice just yell-out as some of the more experienced guys may assist.

Cheers

Reaper · #6 01-07-2008, 08:53 AM

Get a reco box from the guy in sydney (sells v8 ones for $950 + $75 del) on ebay and sell yours on ebay. Will be *the* cheapest way out. Just advertise it as needing reco unless you want some really ****ed off phone calls and you will be suprised what you will get for the old one.

Reaper

vn calais manual · #7 01-07-2008, 04:19 PM

Quote:

Originally Posted by Galixia

so how do i check that to see if it is?

drain your gearbox oil, alot of metal shavings is the clue.

Holdfast · #8 01-07-2008, 04:43 PM

Quote:

Originally Posted by vn calais manual

drain your gearbox oil, alot of metal shavings is the clue.

Here's an image.

http://forums.justcommodores.com.au/...&pictureid=442

Galixia · #9 01-07-2008, 06:34 PM

Quote:

Originally Posted by vn calais manual

drain your gearbox oil, alot of metal shavings is the clue.

i changed the oil bout 2 weeks ago and there wasnt any shavings in the oil... was hopeing the new oil would help it change better

Galixia · #10 03-07-2008, 04:25 PM

well done a bit of a ring round today and the cheapest i could find for someone to reco my gearbox was bout $900... gonna have to start saving

immortality · #11 04-07-2008, 09:34 AM

Quote:

Originally Posted by Galixia

i changed the oil bout 2 weeks ago and there wasnt any shavings in the oil... was hopeing the new oil would help it change better

what oil did you put in the box?

Galixia · #12 11-07-2008, 09:08 PM

Quote:

Originally Posted by immortality

what oil did you put in the box?

castrol gearbox oil and a tube of the nulon gearbox and diff stuff... i just changed it again last week and put in penrite ATF DX3 and 150ml penrite lubrizol this time and it seems a bit smoother but still a bit hard to change when taking off fast