Final Gear

[jimi]

Hello, I´m loocking for a short final gear to my Volvo.

Mi car was a 1.7 and now it´s a b18ft (180 BHP). It´s a race car and I need some similar to a 4,5:1 or a 5:1. Do you know any option or shop to buy it? If I could mount other Volvo pinion gears in my gearbox I could make a new gearbox so.

Best regards, Rubén.

[classicswede]

If you want to gear it down you could change the diff for the lowest gearing possible. You can also gear it down by running wheels and tyres with a smaller rolling radius, what size wheels and tyres are you using?

[jimi]

I use a 185/60/13 and a 175/60/13. The lowest standard diff I know is a 3,82, it´s only a 5% lower than mine, it is a poor gain. I want a 4,5:1-5:1 to have a 2ª to around 60 kph top, I will use to start and I only will use 2º, 3ª, 4ª and 5ª having more close ratio gearbox than now at the same speed.

Thanks, Rubén.

[Chris_C]

What engine is this with? Myself and my housemate did this a while ago to his E36 BMW, replaced the diff with a ~4.6 from an auto to make what we thought would be an autotest awesome machine. Turned out with the time that a gear change takes it was slower if anything.

[jimi]

Engine´s a B18FT form a Volvo 460 turbo.