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GTO gearbox need some help


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6 replies to this topic

#1 kengs4s

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Posted 17 February 2010 - 09:00 AM

I'm interested in GTO gear set it's ratios after this
Gear 1 2 3 4 5 Final
Ratios: 2.660 1.750 1.380 0.960 0.820 3.440

RPM Limit: 7000
RPM @Peak Power: 500
Tyre Size: 295/30 x 19
Tyre Diameter: 659.60 mm
Tyre Circumference: 2072.19 mm


Gear Km/h per 1000 RPM Km/h @500 RPM Km/h @7000 RPM
--------------------------------------------------------
1 13.59 7 95
2 20.65 10 145
3 26.19 13 183
4 37.65 19 264
5 44.08 22 309

i will suit this gear box with 1uz-tt in esprit my problem is 1st gear please advice me in this ratios at 1st gear ,Can drive in town? I have talk with Gto but didn't got any info

#2 mike_sekinger

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Posted 17 February 2010 - 09:38 AM

You can´t go wrong with GTO - they know their UN1s.

Yes, you will be able to drive the car in town, but clearly the 1st gear ratio is closer to the standard 2nd gear and will need a bit more care when taking off.

My GTO gearbox has these ratios, with the exception of 5th where I am standard at 0.76.

Cheers,
Mike S

Edited by mike_sekinger, 17 February 2010 - 09:38 AM.

... more children than sense ... but
1996 Esprit V8
1998 Esprit V8 GT
1999 Esprit S350 #002 (Esprit GT1 replica project)
1996 Esprit V8 GT1 (chassis 114-001)
1992 Lotus Omega (927E)
1999 Esprit V8SE
1999 Esprit S350 #032
1995 Esprit S4s
1999Esprit V8 GT (ex-5th Gear project)... not a bad innings

#3 kengs4s

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Posted 17 February 2010 - 12:49 PM

Thank you Mike

Do you mean include final drive too? It's 3.44.
i worried so much coz i have 19inc wheel and saw on gear cal 1st at 7000rpm speed willl be 95 km/h???

#4 mike_sekinger

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Posted 17 February 2010 - 02:35 PM

Yes, I have the 3.44cwp.

What are you doing to your engine for 500bhp?

Cheers,
Mike S

Edited by mike_sekinger, 17 February 2010 - 02:36 PM.

... more children than sense ... but
1996 Esprit V8
1998 Esprit V8 GT
1999 Esprit S350 #002 (Esprit GT1 replica project)
1996 Esprit V8 GT1 (chassis 114-001)
1992 Lotus Omega (927E)
1999 Esprit V8SE
1999 Esprit S350 #032
1995 Esprit S4s
1999Esprit V8 GT (ex-5th Gear project)... not a bad innings

#5 kengs4s

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Posted 17 February 2010 - 02:46 PM

my power unit was 1uz-fe twin gk-t325 and 264 kelford cam. pressure 0.7 bar .It will go to 1.0 bar after solve gear box problem .Dyno result ...will test again.
Thank you so much mike

#6 mike_sekinger

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Posted 17 February 2010 - 02:52 PM

I´ve heard of the strength of the earlier 1uz-fe engines and those GT-Ks are nice turbos - should make for a very interesting car.

Good luck with the conversion :wacko:

Edited by mike_sekinger, 17 February 2010 - 02:54 PM.

... more children than sense ... but
1996 Esprit V8
1998 Esprit V8 GT
1999 Esprit S350 #002 (Esprit GT1 replica project)
1996 Esprit V8 GT1 (chassis 114-001)
1992 Lotus Omega (927E)
1999 Esprit V8SE
1999 Esprit S350 #032
1995 Esprit S4s
1999Esprit V8 GT (ex-5th Gear project)... not a bad innings

#7 Tony94S4

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Posted 17 February 2010 - 09:34 PM

1 uz is more low end torque than the lotus v8 so ur 1st gear should b perfect




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