Will A 405 Be1 Go On My Gti6

[Karl 15 1 Cars]

haha ok thanks alot miles am just gonna avoid that one ive got a choice of 2 boxes now then both be1 1.6's 1 off someone myprevious box was off tht blew up in a week and had a slight whiring soon after fitting with unknown mileage £120 delivered or another £105 delivered with 131,000 miles and obvioulsy the so called mi16 box tht is unknown lol dont know what to do any suggestions anyone all opinions welcome

 

just to say aswell i do need my car back asap

[Karl 15 1 Cars]

for the record tht last pic i posted of the so called mi16 comes with 77,000 miles a 3month warranty and the gearbox code is 2005tp if thats any help to anyone

[welshpug 1,657]

if that's a typo and its a 2205 TP then its an XU10J2 gearbox, 3.68 FD,

[Karl 15 1 Cars]

ah progress ye welshpug tht is correct though i have no idea what 3.68 final drive means haha i know its ratios and all tht but i dnt understand tht stuff lol could you expand on that??

[welshpug 1,657]

LONG, the number equates to how many revolutions the engine does to a wheel revolution, through all the gear ratios which typically vary from 2.92 first to 0.9or even as long as 0.7 5th.

 

an Mi16 has a 4.42 final drive ratio, which is fairly short, but has longer 4th and 5th gear ratios than a 1.6 and 1.9 box which use longer final drives.

[Karl 15 1 Cars]

so a bigger number on the final drive means its a shorter ratio

[welshpug 1,657]

yes

[Miles 331 1 Cars]

So with that box you could do around 170mph

[Turbo7379 3]

There is a way of identifying a gearbox you are thinking of buying by counting the number of teeth on the crownwheel. You can either do this by removing the diff housing or there is a much simpler way.

 

If you remove the drain plug from the diff housing you can see the crown wheel teeth. Mark 1 tooth with tippex & then turn the diff using a screwdriver through the hole, counting the teeth as you go.

 

Most of the gearboxes have different numbers of teeth on the crownwheel, so if you know that number it should help id the box. I can't remember the numbers offhand, but some of the more knowledgeable guys on here will.

[welshpug 1,657]

That wont help much really as its only half the picture, they are nit like the ma that have a set of fixed sport ratios plus varying non sport ratios, there can be a vast difference between two 3.68 fd boxes as illustrated above with the xu10j2 box, same fd as a 1.9 but much longer 4th and 5th.

[Karl 15 1 Cars]

right thanks guys i wont be getting that box then as tht final drive means its a 1.9 and i dont want that > still hunting