I have mark2 2003 gzx110 now we did a swap of 2gr

[pwuser160136927115]

We swapped 2gr-fse without changing the differential, the gear has now different mechanics, and boys have also suggested upgrading the differential with a 350 markx diff, because the power and torque produced by 2gr-fse won't be able to be sustained by the mark2 so what should I do now ?

[rajaatta]

Well well well. Welcome to the gr group
You need 3.5 Ratio diff to counter the excessive torque output.
It is easily available in crowns, mark x etc.
Remember just swapping the diff woll not hel Pat all you need to calculate the diff ratio before installation
Mark 2 has a bolt on fitting with crown diff mark x uses a different diff foundations plus it's axcels are hook fitted.

Mark x has commonly diff ratio of 4.1
And you need 3.5
Remember

[pwuser160136927115]

So it means i need to upgrade the differential as well, the Mark2 gzx110 differential will create an issue either for the gear or for the differential itself, right.

[rajaatta]

GX is your chassis?
If yes then it has diff ratio of 4.3 which is way more shorter.

Byw
Who is the great scientist who swapped the engine.
And forget to calculate the diff ratios. Or he was just an ustaad to just put the 2gr and make your money go down the drain