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 Post subject: stronger gearbox
PostPosted: Tue Aug 26, 2014 3:37 am 
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Joined: Wed Sep 18, 2013 7:41 am
Posts: 6
Location: Europe
are there stronger gearboxes that fit on a swift gti?
or stronger gears that fit into a swift gti gearbox

Or tricks to strengthen the orginal gti gearbox


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 Post subject: Re: stronger gearbox
PostPosted: Tue Aug 26, 2014 5:01 am 
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Joined: Fri Apr 02, 2004 5:56 am
Posts: 2328
Location: Christchurch NZ, quake capital
For what purpose? Race, Rally, Turbo charged or just being silly and driving without mechanical sympathy???

This subject has been covered many times, essentially the suzuki box to fit 1.0 and 1.3 has a 60mm centreline between the input and the countershaft, we refer to this as the 'small frame' box, this means small bearings, small shafts and small teeth on the gears.

The swift sedan with the 'cable shift' box, along with the j series and new Swift sport M16 box all have a 70mm centreline distance between the shafts, we call this the 'Large Frame box', hence bigger bearings, thicker shafts and bigger teeth.

The closest fitting 'Large Frame box' is the one from the Swift Sedan with the cable shift, not direct fit but very close, this is the box all the turbo guys run in Australia and what I would choose if I was building a rally car.

A non turbo lightweight track car can run a small frame box reliably provided it's built right, better gearing and an LSD improves reliability considerably.


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 Post subject: Re: stronger gearbox
PostPosted: Wed Aug 27, 2014 8:09 am 
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Joined: Wed Sep 18, 2013 7:41 am
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Location: Europe
swift sedan g16b gearbox and baleno g16b gearbox are the same?


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 Post subject: Re: stronger gearbox
PostPosted: Thu Aug 28, 2014 2:46 am 
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Joined: Fri Apr 02, 2004 5:56 am
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Location: Christchurch NZ, quake capital
Nope, Baleno box is a rod change small frame box, same as a g10/g13 box but with a slightly taller bell housing to suit the taller block g15/g16, it's no surprise really that the G powered Baleno's had so many gearbox issues.


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 Post subject: Re: stronger gearbox
PostPosted: Sat Aug 30, 2014 10:39 am 
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Joined: Wed Sep 18, 2013 7:41 am
Posts: 6
Location: Europe
Fit the sedan gearbox inside into a gti or gl gearbox?


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 Post subject: Re: stronger gearbox
PostPosted: Sat Aug 30, 2014 4:20 pm 
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Joined: Fri Apr 02, 2004 5:56 am
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Location: Christchurch NZ, quake capital
Think about it for just a sec...60mm centerline vs 70mm

If there was an easy solution then everybody would be doing it, the large frame boxes are stronger because they are larger, everything is physically bigger, thicker shafts, bigger teeth, bigger bearings and therefore stronger. You'll also need the swift sedan driveshafts because the inner cvs are bigger, outer cvs are the same as gti so will bolt straight into your hubs/knuckles

DMWdave in Aust sells parts to help with the conversion, he has run 360+ hp through the large frame box which is about twice what a modified small frame box can handle.


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