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What gearbox do i need for my 2002 172 ?

I think the diff in my gearbox has went :(

I was going from second into third and crunch, it popped out of gear so i put it back in gear and let off the clutch pedal and there was no drive.
The revs shot up and the car went nowhere.

So i put it into fourth and it was the same, fifth too as well as first and second apart from those gears having a crunching noise when in gear as you attempt to drive.
This noise is now gone (although car goes nowhere).


The car had its gearbox oil changed 9 months ago with 80w90 Castrol as reccomended on here and has been fine up till now.

I heard that some 172 and 182 gearboxes are different so was looking for advice on how much the boxes are going for.
 
AFAIK they are all the same, I have one I removed from a 52 plate 172 had 66k on the clock..
 
You need to check if yours has got a speedo drive on the back of the box. Most of the ones that do are Ph1 172's or 172 cups, but some early Ph2 172's I've seen have had the speedo drive.

If it has this, you'll need to get a 'box with it.
 
You need to check if yours has got a speedo drive on the back of the box. Most of the ones that do are Ph1 172's or 172 cups, but some early Ph2 172's I've seen have had the speedo drive.

If it has this, you'll need to get a 'box with it.


The speedo stopped working when the box went.
Even when i got the car towed a short distance it was reading nothing.

So i'm guessing its a spedo drive box ?
 
I had the same problame and it was the synchronize of the gear that was broken

this Bearingmaking the noize of a tired spring

enekwjzo2tng.webp


watch the diffrence between both synchronization rings the one who isnt broken was for my 1 gear and the one who broken make the problems that you talkking about

gejmi5hyxrm2.webp


if you continue driving like that you will allso broke this (the most expenssive part - in israel it cost 350$)

nq23dmgm24in.webp


but the diffrence between us is that i had this problem only in the second all the others was working great the other problem is when the garage opens the gear it will be never works the same and its only a matter of time untill the gear gives he's life to god
 
The speedo stopped working when the box went.
Even when i got the car towed a short distance it was reading nothing.

So i'm guessing its a spedo drive box ?

Yep, sounds like it's a speedo drive box yeah. Cars without the speedo drive take the reading from the ABS sensors, so the speedo would still work..
 
Yep, pretty much..

6 hours on the driveway is my quickest.

Ben P's guide is pretty much spot on..
 
You ideally want everything off so you can jack the engine up or down freely..

Draining the coolant is easy, just re-use the stuff that comes out!
 
I know a man who can sort your box for you locally. He did mine when it was popping out of gear and did a great job. I got all the bits from agency transmission who are miles cheaper than Aberdeen Renault. Coolant is about £10 for 5 litres mate.
 
I know a man who can sort your box for you locally. He did mine when it was popping out of gear and did a great job. I got all the bits from agency transmission who are miles cheaper than Aberdeen Renault. Coolant is about £10 for 5 litres mate.

Any chance you could pm me the details bud ?




just pull the subframe completley, you don't have to touch the bumper, rad or anything then

Whats involved in pulling the subframe Fred ?
And does the steering rack hinder anything ?
 
Based in Worcester, Agency have specialised in automotive gearboxes and transmissions for over 40 years. Able to offer repairs, full rebuilds and exchange units. We found their services to be exceptional.

Agency Transmissions
Unit 17k Shrub Hill
Worcester
WR4 9EL
tel: 01905 24896
 
Based in Worcester, Agency have specialised in automotive gearboxes and transmissions for over 40 years. Able to offer repairs, full rebuilds and exchange units. We found their services to be exceptional.

Agency Transmissions
Unit 17k Shrub Hill
Worcester
WR4 9EL
tel: 01905 24896

Cheers Tony
 
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