Nova Mk 2 - F10 5 speed (ish)

[Peggy94]

so after plenty mucking about taking the f10 4 speed off today, we realised the old corsa F13 was an electronic drive with a pulse coder for the speedo. So without any looking up we put the F13 5 speed gear set into the F10 casing along with the F13 reverse sensor and gear linkage plate bit (technical term), anyone know if this is gonna smash into a thousand pieces when i turn the engine over? gearbox isn't on yet and I'm sort of putting it off.

Answers on a postcard :d

[jimbob-mcgrew]

it might bust the 2 diff gears if you didnt swap that over with the gearset.

if there both the same matching final drive figures - i.e : 3.74 with 3.74 or 3.94 with 3.94, youll prob get away without any exploding lol

if your not sure what im talking about, its the bottom part of the gearbox that the driveshafts slot into.

check this out :

http://www.corsasport.co.uk/board/viewthread.php?tid=628892

[Andy]

Why the fukk would it explode

[jimbob-mcgrew]

andy, its the extreme gravitational quantum vortex's involved. there too great for the steel and carbon atoms lol

[Peggy94]

the final drive is the same on them both so I just presumed the diff would be able it!

[mowgli]

what engine is it being fitted to??

[Peggy94]

Fitting to a 1.4 8v , the spline in the gearbox isn't rotating by hand, any pointers?

[jimbob-mcgrew]

its off the car right ?

might be in a high gear, and the resistance is too much to turn. on the top of the gearbox, the selector arm, if you push it all the way in, and then pull it out one click, that should be neutral, and should spin freely.

[mowgli]

Fitting to a 1.4 8v , the spline in the gearbox isn't rotating by hand, any pointers?

have you tried turning the diff? or stuck a clutch plate on & tried turning it by hand??

just how old is the f10 casing? the early (up to '85 iirc) ones had slightly different bearings

also, is the 1.4 a carb or mpi engine? (as in from the factory)

[Peggy94]

Its a J reg , and its running carb, I tried pulling it out once click but still wouldn't spin, the button with the spring for setting the gears won't push in either

[mowgli]

ok. as long as it wasn't a c14se block, it should fit fine.

did you check it turned ok before bolting it up?

[jimbob-mcgrew]

try undoing the 4 x 11mm bolts on the selector, and wiggling the selector box out.

theres 3 x U-shaped selector arms, under the selector box. make sure there all lined up together.

also, did you happen to check the markings in the 2 diff gears ? (the 3.74's have 5 notches)

[Peggy94]

Yeah it was fine before I put it into the F10 casing, and I checked the 3 plastic arms were in place, hmm didn't check the diffs were lined up, looks like the cluster is coming out! Will keep you all posted thanks for advice:)

[jimbob-mcgrew]

i think you can get away with just taking the diff cover plate off to view them.
the diff gear is right there to check notches, and above it, the small pinion gear it connects with, from a certain angle, you can just about see the notches to count them (i think you just about can anyway, might need a torch) .. gearbox oil will piss out all over the place when the cover plate comes off, so watch out.

did the small circular magnet go back in its little housing too ?
and theres a large D-shaped washer that goes over one of the selector rods,

[jimbob-mcgrew]

there not plastic, you looking at the right things ?
these 3 U-shaped pieces in the top right corner i was on about. they might be out of line.
all lined up is neutral gear.

http://www.astra-mk2.com/0ddball/gte_ver2.0/quaiffe44.jpg

[Peggy94]

They might not be plastic I'm not sure it was dark haha, there was only 2 of them on the 4 speed because of no 5th gear do you mean those? Yes the D shaped washer is in for reverse gear don't think that will affect it , will check for the magnet :) would of been easier to buy a digi dash lmao

[jimbob-mcgrew]

yeah thats right, the 4 speeds only have 2 selectors.
your f13 5 speed gearset youve put in will have 3.

the small circular magnet should be underneath the large gearset gasket. if you didnt touch the gasket, you probably didnt see it, and its probably still there.

http://www.c20xe.co.uk/carimages/9055/shaft.jpg

[Peggy94]

Got magnet in and everything that's been said so far! Just a quick one do I have to change the diff cog to the nova cog? Although they look the same there may be a small difference

[Peggy94]

Okay so update, its the first gear that catches on the casing of the F10, removed all that with a dremel and now its fine, bolted onto the car with the new clutch and the pressure plate is wrong, brilliant

[jimbob-mcgrew]

the input shafts were both 14 spline on mine, f10 & f13

i put an f13 on recently, and kept the original f10 pressure plate.
i made sure to use the old clutch release bearing with it, as there usually sold in kits, with matching faces

[jimbob-mcgrew]

did you have to shave much off the inside of the box by the way ?

from what other people have said, i was under the impression that these gearsets go straight into the F10 casings, but as you mentioned it had an electronic drive, makes me think its a post 97 box, which has a larger 1st gear.

the later boxes only have 2 extra teeth on the 1st gear (41 instead of 39). but maybe thats just enough to cause it to catch ?