Gear Ratio Dilemma for Boost
 

Hi guys,



I'm trying to decide which gear ratios / final drive ratio I should go for when building my trans to handle a little boost.



I have the 2.0 beta II turbo'ed and the gearbox will be built to handle 500+whp.



The stock tib gear ratios:

http://i1069.photobucket.com/albums/...psf5dl3wrn.png



What do you think of these ratios? Same FDR as the stock tib but longer gears... Is this good, crazy or stupid for road use?

http://i1069.photobucket.com/albums/...psjw7apvsv.png



All comments much appreciated :P

Totally depends on your expected power output and what you plan on doing with the car.

Well my new build should be a 500whp monster :-)



Usage wise it will be primarily road use and I do a fair amount of long distance driving. I occasionally do a few runs down the drag strip for a laugh but only like 4-5 times a year. Other than that I do the occasional track day, usually 3-4 mile circuits so full throttle then hard on the brakes, proper car killer style.



I'm just trying to weigh up the pros and cons of having longer gears for a daily drive...

You've got 3 different types of cars now. Street, strip, and track. Neither require the same setup, or the same gear ratios.

True, I suppose I have but just because I use it for all 3 doesn't mean it's good at all 3.



In order of the most important to me :

1. Road use (comfortable sitting @ 80mph for hours on end)

2. Having some fun on the race track

3. Looking like a fool trying to leave the green light @ santa pod whilst burning up a set of tyres in the first 60 foot.





It would be nice to lower the rpms in 5th gear at 80mph but other than that I just want to go with gears that are best suited for the power I'm making. I guess a stock 500hp car would have longer gears than a stock 100hp car...

You dont have a lot of option with Beta trannys, I would use one out an Elantra with 3.65 FDR is you travel a lot at 80 miles an hour.