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Removal And Refitting A Gearbox On A Classic - Help Plz


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Posted

Going to be swapping the box on my P1 for another. I have fairly basic mechanical experience - is this something I should risk tackling myself?

Cheers

Stuart

Posted

Not a big problem to do yourself, but would be easier with another pair of hands mate.

Getting it out is fine, but getting back in is a bit of a PITA on your own.

Posted (edited)

Is it not an STi you have Welsho?

If so, your's is bigger and heavier than Stuart's. ;)

Edited by drb5
Posted

Cheers chaps. Will decide over the weekend whether to tackle it or not. Likely be doing the flywheel as well. Is that reasonably straightforward too?

Posted

mind to disconnect clutch fork to seperate box from engine. after removing starter there is plug to remove with hex key. behind this there is fork pivot pin, remove a cam belt cover bolt and screw this into the pin and then pull out.

Posted
Is it not an STi you have Welsho?

If so, your's is bigger and heavier than Stuart's. ;)

WRX with STi spoiler, TMIC and front brakes... you might call it a hybrid of sorts :thumbup:

Posted
Cheers chaps. Will decide over the weekend whether to tackle it or not. Likely be doing the flywheel as well. Is that reasonably straightforward too?

yes the flywheel is straightforward. Remove the clutch, then use an impact gun REMEMBER THE THREADS ARE LEFT HAND!!!

put the new bolts on with decent amount of Threadlock and tighten well.

Refit the clutch with an alignment tool.

Posted
yes the flywheel is straightforward. Remove the clutch, then use an impact gun REMEMBER THE THREADS ARE LEFT HAND!!!

put the new bolts on with decent amount of Threadlock and tighten well.

Refit the clutch with an alignment tool.

AND... that rules me out of EVER attempting any of that! ;)

Posted

Yep, the Welsho, I'm starting to think this aint a job for me!

Main concern is the weight and if I make an erse of it i'll struggle to get it resolved! Don't have a scooby what an alignment tool is either!

We shall see.

Cheers for the input so far everyone

Posted
Yep, the Welsho, I'm starting to think this aint a job for me!

Main concern is the weight and if I make an erse of it i'll struggle to get it resolved! Don't have a scooby what an alignment tool is either!

We shall see.

Cheers for the input so far everyone

To do this mate you really do need two people. I have only ever done one box on my own and its a killer!!

The alignment tool is what you use to refit the clutch to the flywheel (which youll need if you want to change the flywheel)

It basically makes sure the center plate is aligned in the pressure plate and aligned with the recess in the flywheel for the gearbox input shaft.

If theyre not aligned youll spend all day trying to fit a square peg in a round hole!!!! :-)

Posted
To do this mate you really do need two people. I have only ever done one box on my own and its a killer!!

The alignment tool is what you use to refit the clutch to the flywheel (which youll need if you want to change the flywheel)

It basically makes sure the center plate is aligned in the pressure plate and aligned with the recess in the flywheel for the gearbox input shaft.

If theyre not aligned youll spend all day trying to fit a square peg in a round hole!!!! :-)

You know too much for your own good. Note to emoe: must get out more. ;)

Posted

LOL thanks Welsho!!

I do get out quite a bit, but ever since i was 8 i have raced, even throughout my Military Career (hic* can you have a career in the army nowadays?)

Theres years of experience and knowledge locked up inside this head of mine, including the solution to rubiks cube, the answer to why the plughole makes a gurgling noise and the infinte question solution to the universe

Posted (edited)
LOL thanks Welsho!!

I do get out quite a bit, but ever since i was 8 i have raced, even throughout my Military Career (hic* can you have a career in the army nowadays?)

Theres years of experience and knowledge locked up inside this head of mine, including the solution to rubiks cube, the answer to why the plughole makes a gurgling noise and the infinte question solution to the universe

I can do that - older hands and and mind means it now takes me 80-90 seconds :thumbup:

Dont know that - don't care!

The universe can't be infinite. That it had a start point means its not eternal, therefore subject to entropy :beer:

But that aside, feel free to demonstrate your prowess on my car, anytime! :D;)

Edited by TheWelsho
Posted

Stuart - you don't need an impact wrench to remove the 8 X 14mm bolts that hold the flywheel to the Crank........

Once the Box is removed there are 2 long M10 Studs sticking out from either side of the bottom of the engine.

Remove the 6 X 12mm Bolts holding the clutch onto the flywheel (M8X1.25 thread).

Get a double ring- ended ring spanner (10/11mm will be fine) and put one end over the 10mm Stud I spoke about and the other end put an M8 X 30mm bolt (bolts that mount the Intercooler to its respective brackets on Engine/Inlet will do) through the ring spanner, rotate the flywheel to align bolt up with one of the bolt holes that held the clutch on and screw in bolt.............

This now has the Flywheel locked in place and will allow you to use a 14mm socket and breaker bar to remove the bolts on the flywheel (they are normal thread, anti-clockwise to loosen, clockwise to tighten!)

JOB DONE!

Posted
Stuart - you don't need an impact wrench to remove the 8 X 14mm bolts that hold the flywheel to the Crank........

Once the Box is removed there are 2 long M10 Studs sticking out from either side of the bottom of the engine.

Remove the 6 X 12mm Bolts holding the clutch onto the flywheel (M8X1.25 thread).

Get a double ring- ended ring spanner (10/11mm will be fine) and put one end over the 10mm Stud I spoke about and the other end put an M8 X 30mm bolt (bolts that mount the Intercooler to its respective brackets on Engine/Inlet will do) through the ring spanner, rotate the flywheel to align bolt up with one of the bolt holes that held the clutch on and screw in bolt.............

This now has the Flywheel locked in place and will allow you to use a 14mm socket and breaker bar to remove the bolts on the flywheel (they are normal thread, anti-clockwise to loosen, clockwise to tighten!)

JOB DONE!

And for the less mechanical minded that's righty- tighty, lefty- loosy

Johnny

Posted
And for the less mechanical minded that's righty- tighty, lefty- loosy

Johnny

Was going to say that but he might have got confused :D

Russell

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