16 Posts - Page: 1

Fitting a 56A 5 Speed, Clutch mechanism

All,
 
I now have a 56A 5 speed for my B10 rally car.
 
The obvious difference between that box and the 56 4 speed in the car is the clutch mechanism.
 
Can someone suggest a tidy way of making it work please. 
Edit in: I didn't get any clutch mechanism with the gearbox.

Mark
best way is to run the 1200 cable to suit ther hole in the box..
then use the clutch perch that screws to the firewall on a 1200, screw this over where the cable goes thru the firewall on your B10.. bob's your auntie.. job done.. and the pedal will be heaps lighter than the original B10 one..

you may have to shape a dent into the floor for clutch fork clearance!!!
I am pretty sure the 56A would fit without having to modify the tunnel.

If you need to modify the tunnel to make it fit you should shorten the the clutch fork, this will help with clearance issues and save you having to modify the tunnel.

People have either:

A) Cut the tunnel and put a box in provide clearance for the clutch fork (why the hell do they call it a fork?)

B) Panel beat the tunnel to provide clearance.

Modify the fork, you won't have to massgae the tunnel or cut it. I haven't done this yet but I plan to do so the next time I have the box out (and re-weld the tunnel back to original).

Mike is on the money, use a 1200 cable and perch.
not sure I'd shorten the fork at all Chris, this would reduce the travel on the clutch..
the small "dent" can be done with a ball pein and turns out very neat..
Wouldn't it increase the travel?

A small dent wouldn't have cut it for mine, I had to cut a hole in the trans tunnel which was a bummer. And since looking at the clutch lever I've decided to do that next. It's worth a try isn't it?
If I shorten the fork outside the bell housing then the clutch pedal travel will be reduced and harder to push.  But if the B110 mechanism is lighter than the B10 I won't notice will I?
 
Thanks for advice so far.
 
Mark
Ok sorry the fulcrum on the other side of the carrier isn't it. Whoops sorry I was thinking of it as it being at the middle.

I'm all muddled up.

Either way, another member on 1200.com insisted that the 56A 5spd box was a bolt-in without mods to tunnel.

I'll have the modified fork soon, reducing it by that small amount won't have much influence on pedal pressure, if it does maybe it's best to up the gym workout on your left leg. But I think we can admit that a harder clutch pedal is still fairly weak in these little cars.
The next thing I have noticed is the rear mount.  The mount at the back of the 56A  (5 speed) seems to be further from the centre of the output shaft than the mount of the 56 (3 and 4 speed).
 
Do I need a gearbox mount of any B110 or a GX 5 speed?   Or something else?
 
I haven't actually done any work yet, I think I need to go to a wrecker to get:
.  B110 clutch fork
.  B110 cable and "perch"
. maybe rear B110 rear gearbox mount.
Can anyone suggest a wrecker in Melbourne who would have the bits I need for the conversion? 
 
Mark
You'd need to modify the gearbox mount to extend the bolt hole placements that fix to the tunnel.
Help please, I am desperate to get this job finished.  I need a 1200 thrust bearing and carrier to suit the 1200 arm.
 
Is anybody in Melbourne (or nearby) able to help?
 
Mark
What box is in the car now? can't you use any of the parts off that?
I don't think he can, I think he has the stock gb.
 
The thrust bearing can be bought from a parts store, or have a look on ebay. As for the carrier and arm I think you might have them confused for two separate items. They are the same thing (unlike the factory 1000 part which is two parts). The carrier which holds the thrust bearing also serves as the arm to which the clutch cable connects to.
 
So generally you'd also need a clutch cable and perch from a 1200 or 120y(confirm?).
 
Is there a wrecker near you? A 4 speed 56a can be had for anywhere between 25 and 75 dollars so you are probably better to buy a whole gearbox and get what you need off it. Just be sure it has the parts you need. Keep an eye out for these parts on ebay as well.
Whoa, sorry they are a two part setup. Carrier and arm/fork.
 
Like I said gearboxes tend to be cheap put up a wanted advert on 1200.com and see what comes up. Last 4 speed gearbox I got I bought for $40.00.
I wish I had just bought a 4 speed for the "accessories", it would have worked out easier.  Anyway I have the required thrust bearing and carrier (thanks to Randy at Nissco) and the 'box is bolted up and in the car ok.  The thrust bearing has a larger diameter than the 1000 variety so it is pushing the fingers on the pressure plate closer to the pivot point making the clutch heavier.  I have a 1200 cable all the way to the 1000 pedal and it seems to be working put is not the permanent arrangement.  The fork is periously close to the body but once I get the rear mount lowered to the correct 56A five speed height I should have working clearance.
 
I had the motor out for another job so have not fired it up yet, probably tomorrow.
 
Mark
It's just about all back together, any one in Research this afternoon would have known that a 10A fed by twin side draughts was alive.  I tried to engage reverse (accidentally) from first once, lesson has been learnt without damage, hopefully.
 
Now I just need to drop the back of the 'box by about 20mm and get the clutch cable proper.
 
thanks for the help.
 
Mark
16 Posts - Page: 1