GT DIFF RATIO

[nz05gt]

I am looking into having some different diff ratio's made for the GT transaxle
they need to make a run of about 50 sets to make it worth while.
I need either 4.10 or 4.30 for racing are any of you interested ,if so let me know what ratio and how many.
cheers
neil #612 NZ

[AZGT]

Did you see the thread where we talked about ratios?

I know I thought 3:90 was probably about ideal (through some information I had read), but don't know if that would fit your specific needs.

First question from anyone will be how much?

How tough would the change be?

[nz05gt]

We are working with several company's they should be able to give us the cost shortly.At this stage I am just trying to find out whether there is enough people interested in this to be able to do them at a reasonable cost.
the replacment of ratio's would not be a major job for a good tansmission specialist our someone like the "gt guy".
We could run a 3.90 ratio but would prefer to run a shorter ratio but if it works out that 3.90 is the most popular then this may be the only cost effective ratio to build .

Neil 05 #612

[one of 101]

I'm in....

[Derry]

I might be interested in 4:10's, I have always liked that ratio on a road course.
Derry

[nz05gt]

thanks guys keep them coming all choices will be looked at.
neil 05 #612

[lthlvpr]

Are you just looking for final drive ratios? In the past, I have found that getting custom tranny ratios done for the gearbox yields much better results. Then you can control speed/rpm in each gear. For example, with the flat torque curve of this engine, wheelspin is an issue in 1st gear, but 2-3-4 could be changed to keep the rpms in a better range. This worked great on the Viper Transmission (lowered our 100-150mph times but a couple seconds!)
Thoughts?

[nz05gt]

Yes changing gear ratio's will yeild better results, I have asked ricardo about this but have had no reply as of yet, this may also turn out to be to costly for just a few sets of gear sets but I am looking into this as well
Neil 05 #612

[Bart Carter]

Wouldn't it make sense that Ricardo would use a standard (to Ricardo) gear set that is used in other Ricardo transmissions. There may be appropriate ratios available instead of custom made.

[nz05gt]

Bart
I still have not heard bake from ricardo on the gear ratio's the head tech is away till next week,will post when I hear something.
Neil