Tuning upgrades

[Micha]

+1 for
 maintenance
 good tyres
 brake pads
 suspensions
 and corolla short gearbox.

[m1tch]

My car has the 2zz and gearbox and it'll hit 60 in second. 61 to be precise!

Anyone use the 1zz with the 2zz box?

They will fit, however the 2zz revs much much higher than a stock 1zz so it would be geared to suit.

[Gaz mr-s]

[/quote]
Anyone use the 1zz with the 2zz box?[/quote]


They will fit, however the 2zz revs much much higher than a stock 1zz so it would be geared to suit.[/quote]

Meaning that the ratios are all-wrong.... so not an appropriate swap.

Has the MRS a closer-ratio box?   Is that the relevance of racers using one?  Or is it just the diff gearing?

[m1tch]

Anyone use the 1zz with the 2zz box?[/quote]


They will fit, however the 2zz revs much much higher than a stock 1zz so it would be geared to suit.[/quote]

Meaning that the ratios are all-wrong.... so not an appropriate swap.

Has the MRS a closer-ratio box?   Is that the relevance of racers using one?  Or is it just the diff gearing?[/quote]

The JDM cars have a close ratio box but some don't have the LSD as they don't come as standard

Below are all of the C series transmissions:

 m https://en.wikipedia.org/wiki/Toyota_C_transmission m

Looks like they got a C65 box (C65-01A is open diff, C65-01B has LSD) whereas we got the C66 box - think the box you might be after is the C65-01B which has the close ratio but with the LSD

C65:

1st - 3.166
2nd - 1.904
3rd - 1.392
4th - 1.031
5th - 0.815
6th - 0.725
Rev - 0.3250
Final drive - 4.312

C66:

1st - 3.166
2nd - 1.904
3rd - 1.310
4th - 0.969
5th - 0.815
6th - 0.725
Rev - 3.250
Final drive - 3.941

Just running through the ratios via a calculator here are the theoretical top speeds per gear @ 7k RPM (first number is the C65 box)

1st gear - 36 vs 39
2nd gear - 60 vs 65
3rd gear - 82 vs 95
4th gear - 111 vs 129
5th gear - 140 vs 153
6th gear - 157 vs 172

[Gaz mr-s]

Thanks Mitch.   s:D s:D