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Home > Help Needed / General Tech Chat > Gear ratios, low rpm at 60mph?

WillCarter

14 Posts
Member #: 11782
Member

Hawaii

14th Aug, 2018 at 03:43:10pm

So I've been looking a lot at gear ratios and so on but nothing that will fit my build.

I'm building a 1293 turbo engine, aiming for around 130bhp.

What gears and gear ratios would be recommended? I'm wanting to cruise at 60 at a reasonably low rpm.

Cheers,

Will

Edited by WillCarter on 14th Aug, 2018.


jonny f

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2091 Posts
Member #: 9894
Post Whore

Dorking

14th Aug, 2018 at 11:12:17pm

What do you mean nothing that will fit your build?

Look on guessworks website for ratios of various gearsets.

Most just change the final drive to get longer gears.

WillCarter

14 Posts
Member #: 11782
Member

Hawaii

15th Aug, 2018 at 06:45:53am

Thank you, the calculators a big help! Hadn't come across that before.


Steve220

242 Posts
Member #: 11017
Senior Member

Shropshire

16th Aug, 2018 at 11:36:31am

2.9 or 2.7 but acceleration won't be as fun.

Jay#2

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2500 Posts
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Northern Ireland (ex AUS)

16th Aug, 2018 at 06:27:08pm

I have a 3.1 final drive on 10"s, at 70mph I'm pretty much at 4K rpm. With the close ratio straight cuts first gear is a bit taller but no issues setting off even with the grippy clutch. I'm thinking about 2.9s as that will bring things down to 3.5k at 70mph.

On 7th Nov, 2008 Nic said:
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