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PostPosted: Sat May 18, 2019 12:02 pm 
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848cc
848cc
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Joined: Tue Mar 16, 2004 10:14 am
Posts: 166
Location: Narre Warren, Melbourne
Hi everyone,
Question about input gear and bearings for a 3 synchro box.
Currently fitting a 998 A+ engine to my 850 3 synchro gearbox.
Bearing removal on the gear is obviously a 3 leg puller job once the circlip is removed, but how does everyone remove the bearing race from inside the clutch housing?

When fitting the A+ to my 3 synchro, do I utilise my input gear, idler and primary from the 850 or use the A+ ? Do A+ ones differ?
I'm planning on retaining my pre verto clutch if this helps

On a side note, there seems to be a small chip in one of the the input gears teeth on the extreme outside- see pictures. Will this affect in any way?
Happy to buy if someone has a spare they are willing to sell.


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PostPosted: Sat May 18, 2019 10:08 pm 
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998cc
998cc

Joined: Mon Mar 10, 2014 11:38 am
Posts: 1079
Location: Tassie
I normally heat up the clutch housing with a hot air gun and the race will drop out after a couple of minutes.

I believe the A+ gears have a different helical angle so you can't mix and match those gears.
Do you know it your 850 primary gear fits your 998 crank? There were 2 sizes for the 850 crank tails. The input gear for a 3 syncro has a longer snout so if you use the A+ gears you will need to space the input one out.
Hope that helps, good luck with your project.

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1963 Morris 850 Smoke Grey
1963 Morris 850 Shadow Blue
1965 Morris Mini Smooth Van
1966 Morris Mini Van
1969 Morris Mini Deluxe Resto
5/72 Clubman Gt


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PostPosted: Sun May 19, 2019 10:02 am 
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religious status
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 38699
Location: near Baulkham Hills, NSW
To remove the outer ring of the roller bearing I tack weld a flat washer and bolt inside it, then pull the out with a nut, washer and a driveshaft yoke.
Or you can run a mig weld bead inside it which will shrink the ring.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank @7000+, 45 Dellorto, RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. Going harder with Peak Ignition fitted.:mrgreen:


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