gearbox double roller..
Turbo Mini Forums

is there a weird noise these make when they lose cage integrity ? bit of a ringing click when you switch off the engine ?

thanks
robert .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

You've got now a good one to take engine of and inspect...... gearbox.
Mine had a broken case at the idler bearing support... hope that's not your noise.
This also shown highly used crank/bearings/oil pump and bores/pistons/valves defo a junk engine.
Hopes your will have some health inside :-
Whatever an A-serie cannot live with that sort of animal power as Your for long.
I would take it of ,and look inside... Think you're on rebuild

thanks fab...er.. i think lol,,i

,ll have a bit more of an investigate today .id imagine if anything would be on its way out it would be the helical drops ...

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

ill check em nick

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Has something come loose?

you say a ringing click when the engine is switched off,

It cant be the double roller then, as it turns with wheel speed.

good point joe , ...new info

the ringing click doesnt happen if i have the clutch pedal down when i switch off ,

also , if i drive in forward or reverse and push the clutch in and coast it makes a tinkling rattle sort of noise ....drop gears bottom idler layshaft ??? its not engine speed related its rd speed .

ill try in 4th .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

I,ve got the feeling its something in the tansfer chain,

This sounds similar to when my ring gear fell off. Is it starting ok?

yup starts fine nic ,i think its the bottom gear bearing in the transfer gears maybe the outer maybe the inner ,ill hoick it apart ,maybe after iv done the astra ,if i can get the parts today for it .one car left !!

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

hmmm well ,the drop gears are all fine ,and the bearings LOOK ok ,so i think i may have to pull the engine and wip the box off ...bummer .

is there anything i can test in the box with the transfer case off ?

one thing i did notice , is the layshaft thrust washer tang makes a click from side to side in its slot .but i think they all do that ?

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Yes they all do that, fear not

Would you mean that you could not open the box??
From your piccies transfer case seem to be worn ,as idler and his shims, not much life left in them.
I would nicely clean the gearbox and look for cracks, anyway a good set of bearings couldn't be optional ...

On 6th Sep, 2010 fab said:
Would you mean that you could not open the box??
From your piccies transfer case seem to be worn ,as idler and his shims, not much life left in them.
I would nicely clean the gearbox and look for cracks, anyway a good set of bearings couldn't be optional ...

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Pinion nut loose ?
Reverse gear bush sliding out ? But that might stop it from going into reverse. Mmmmm

"So wat we gonna do tonight Brain?"
"Same thing we do evernight Pinky!"
"Try to take over the world!"

hmm ,there was also a much louder than normal click on each gearchange ...

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

clutch/flwheel assembly all torqued up right? ive heard these verto clutch slop back and forth at switch off and over run.

Ummm.....

I think that you need to look at the RTS in some detail.........

Just to eliminate it of course.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

angus ,yes , in fact the flywheel was blimmen mega tight ,3 ft bar on a puller to get it off with a big bang from a hammer on the centre .

paul , the clutch and flywheel look fine so far , nothing rattling ,nothing untowards...have not taken the pressure plate off yet .

well the box is out and apartish .all bearings so far visible or tested have thier cages complete and spin freely .

layshaft is fine and bearings good .
so bit stuck so far ..
only thing i have noticed , is , after i tried to get the pinion nut undone with the air gun ,without locking the gears ,(thinking it may just shock off ),the assmbly span as you might expect ,and the nut did not come off ,,thing is , i did this with the bearing retainer plate off ,and now there are some marks on the side of the diff where it has rubbed against the bearing ,even a small chip off the side of one tooth ,now did i do this with the air gun .,or was this rubbing in use ??

i assmbled it all back again ,and deliberately pushed the double roller over so it rubbed ,then put the bearing retaining plate on ,and it snugged up and pushed the bearing over as youd expect and no rubbing ...

is there something that can happen to a shimmed diff and double roller in use that can make them rub ,?? case distortion ?

or should i assume i did it just now, because i had no plate holding the bearing in ,and look for something else ? hmmm

more investigation tomorrow ...

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Please don't use the rattle gun to lossen the pinion nut when the gearbox is locked up. You can brinnel the bearings and gear teeth.

I'm sure you already know this and I am teaching you to suck eggs. If so, I am sorry.

:)

Edited by Sprocket on 6th Sep, 2010.

nope didnt know that colin ,been doing it for years and had no probs , but its good to know thers a risk , thank you .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

The same can be said for wheel bearings

Its not a 10mm spanner thats been dropped in the clutch housing is it?

no not even a washer !

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM