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PostPosted: Fri Feb 22, 2013 8:29 pm 
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848cc
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Joined: Mon Jan 12, 2009 11:22 pm
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Location: Flynn, ACT
Folks,
Very interested to hear opinions on the state of this gear.
The engaging teeth are quite a lot shorter than on the other three gears, which makes me think it's seen the best of its days.

The box was not shifting down well into second, and was tending to jump out of second soon after selection (but would settle down once the clutch pedal had been fully released and power applied gently). The selector fork was pretty ratty, so that was at least part of the problem.

Thank you.
Matt

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PostPosted: Fri Feb 22, 2013 8:33 pm 
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1275cc
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That chunk out of the synchro hub is probably not helping, plus it doesn't look like the synchro ring has been engaging properly.
But I am sure the experts will have more to say? :wink:

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PostPosted: Fri Feb 22, 2013 9:49 pm 
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Wear and tear on the teeth from worn synchros in the past not working.
That cone on the gear is pretty well rooted now too.
Time for a new one, bin the synchro sleeve while you're at it- it'll be buggered too. :lol:

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PostPosted: Sat Feb 23, 2013 9:22 am 
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848cc
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Location: Flynn, ACT
Thanks guys.
Good to have it confirmed.
Is the correct part number for the syncro hub DAM7455?
Would the whole hub need replacing or just the inner or outer?
Looks like they only sell them as an inner/outer combined...
Are the newies okay, or would good 2/h be a better bet?

Cheers
Matt

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PostPosted: Sat Feb 23, 2013 10:14 am 
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These days, I would go for a good S/H one (outer + inner). You know where it was made and by whom.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


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PostPosted: Sat Feb 23, 2013 10:31 am 
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848cc
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Location: Flynn, ACT
Thanks Doc.
Will a rod change box be able to donate it's gear and hub? - if so, we've got two rod boxes as potential donors.
The Mini King bible seems to indicate that as long as it's 4 syncro (and pre-Aplus), the rod and remote stuff is the same.

Thanks!
Matt

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PostPosted: Sat Feb 23, 2013 11:58 am 
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1275cc
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Location: North of the Harbour planning my next mini project
Should be OK
I think 1,2 and 3 gears are the same on most 4 speed synchro boxes.

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1967 Mini Deluxe
1973 Clubman Van (the fleet spare)
1978 ex 1275 LS ("Wizard" Eaton Supercharged) :)
2015 HSV GenF GTS(occasional drive & tow car)
2019 MINI F55 Cooper S


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PostPosted: Sat Feb 23, 2013 12:27 pm 
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michaelb wrote:
Should be OK
I think 1,2 and 3 gears are the same on most 4 speed synchro boxes.

Yes any Oz 4 synchro box has same 1-2-3 gears and synchro hubs.
A+ hubs still the same I think, but their gears definitely are not.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


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 Post subject: gears
PostPosted: Mon Feb 25, 2013 4:20 pm 
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998cc
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Forgive my ignorance

- how can you tell aus made gearboxes -

are there any 4 synchro remote aus made

I was searching for 22g1094 ( second gear 4 speed remote) is there an equivalent?

Cheers Darryl


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 Post subject: Re: gears
PostPosted: Mon Feb 25, 2013 6:13 pm 
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FNQ wrote:
Forgive my ignorance

- how can you tell aus made gearboxes -

are there any 4 synchro remote aus made

I was searching for 22g1094 ( second gear 4 speed remote) is there an equivalent?

Cheers Darryl

When I say Australian gearboxes, I mean as fitted to Australian cars.
As in NOT A+ boxes (except for the very last cars in the late 70s).

Yes, many gearsets were made here (by Borg Warner) but these were made to the BMC drawings, so interchange with UK gears.
I think the gearbox cases all came from UK? Not sure though.

There are a few places in Oz still making gearbox parts (including some gears), Heritage MG is one of them.

Most replacement gears now come from UK but many are no longer made there.

4 synchro remote change boxes were superseded here and in UK by the rodchange box, around 1973-74. But the gears and shafts inside are the same parts, except for reverse. Again, I'm not talking A+ gearboxes here.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


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PostPosted: Mon Feb 25, 2013 9:54 pm 
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998cc
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thank you , good info Cheers


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