How to spot an 1800 NA gearbox?

WideOpenThrottle · Post by **WideOpenThrottle** » Thu Apr 19, 2012 7:24 pm

How do you differenciate an 1800 box to a 1600 one?

Is there a number stamped on them or what?

Looking at maybe getting one while i have the chance while everything is out!

Cheers for knowing what i don't!

last_resort14 · Post by **last_resort14** » Thu Apr 19, 2012 8:15 pm

they are the same.
ive had 2 na6 boxes, and then the one that came with my na8 motor was identical. ive had one that was a 1.8 out of a newer car and when it got rebuilt the guy said it had a double synchro on second or something, but as far as im aware they are the same box

WideOpenThrottle · Post by **WideOpenThrottle** » Thu Apr 19, 2012 8:38 pm

So... just the internals are stronger then?

Still it would be nice to identify one without a shadow of doubt!

Wouldn't like to think i bought a 1600 one when i have already got one!

last_resort14 · Post by **last_resort14** » Thu Apr 19, 2012 10:08 pm

nah the internals are the same, theres no difference. unless its a 6 speed of course

Born_disturbed · Post by **Born_disturbed** » Thu Apr 19, 2012 11:44 pm

NB ones are stronger than NA ones, but all NA ones are built equal

Timmo · Post by **Timmo** » Fri Apr 20, 2012 7:16 am

But they do vary by year don't they? In the shifter assembly?

WideOpenThrottle · Post by **WideOpenThrottle** » Fri Apr 20, 2012 7:29 am

Looks like i will spend the coin on something else then!

What would i do without this Forum! cheers guys.

WideOpenThrottle · Post by **WideOpenThrottle** » Fri Apr 20, 2012 7:59 am

Timmo wrote:But they do vary by year don't they? In the shifter assembly?

It seems they really only vary in final ratio's-the 1600's are 4.3.1 while the 1800's are 4.1.1 plus an improved second gear synchroniser!

Not a stronger box as i had originally thought!

ross · Post by **ross** » Sat Apr 21, 2012 8:29 am

The small dustboot around the base of the gearstick is 60mm dia on the 1.8 and the 1.6 is 75mm.
Also a slightly different baseshape and the rubber boot is taller on the 1.8.

Kieran · Post by **Kieran** » Mon Apr 23, 2012 2:49 pm

and the 6 speed is a 3.9.1

last_resort14 · Post by **last_resort14** » Mon Apr 23, 2012 6:23 pm

The 4.3:1 , 4.1:1 , 3.9:1 etc final drives, is the diff ratios. Nothing to do with the gearboxes.

WideOpenThrottle · Post by **WideOpenThrottle** » Mon Apr 23, 2012 7:08 pm

last_resort14 wrote:The 4.3:1 , 4.1:1 , 3.9:1 etc final drives, is the diff ratios. Nothing to do with the gearboxes.

Yep! i stand corrected-never read my book correctly!

How to spot an 1800 NA gearbox?

How to spot an 1800 NA gearbox?

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