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Honda Engine Specifications

  
 

Honda K20A i-VTEC Engine And Gearbox Specifications

A Euro specification K20A2 iVTEC typically produces around 220bhp @ 7950rpm and 210Nm (157ft/lb) torque @ 4750rpm.

With a close-ratio 6-speed gear box, the massive improvements with this transplant are not confined to the engine alone, but a combination that will make your Lotus an awesome driving experience!

The JDM (Japanese Domestic Market) specification K20A's have an LSD (Limited Slip Differential), a lightened flywheel and closer gearing in 4th, 5th & 6th than the Euro spec item. K20A iVTEC typically produces around 225bhp @ 8,000rpm and 216Nm (163ft/lb) torque @ 4950rpm.


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Performance
Normally Aspirated K20A2 in Elise S1
• 0-60 4 seconds
• 0-100 9.5 seconds
Supercharged S1 Exige
• 0-60 in 3.65
• 0-100 in 8 Seconds

• Top speed 160+mph
• 40 + mpg fuel consumption, more frugal than 1.8 K series.

Gear Ratios UK- Euro Spec. K20A2 iVTEC Type R trans: Final drive: 4.764:1 No LSD
1st 3.267 : 1 @ 8000 rpm 36 mph
2nd 2.130 : 1 @ 8000 rpm 56 mph
3rd 1.517 : 1 @ 8000 rpm 79 mph
4th 1.147 : 1 @ 8000 rpm 104 mph
5th 0.921 : 1 @ 8000 rpm 130 mph
6th 0.738 : 1 @ 8000 rpm 162 mph



Gear Ratios JDM K20A iVTEC Type R trans Final Drive Ratio: 4.764:1 with LSD
1st 3.267 : 1 @ 8000 rpm 36 mph
2nd 2.130 : 1 @ 8000 rpm 56 mph
3rd 1.517 : 1 @ 8000 rpm 79 mph
4th 1.212 : 1 @ 8000 rpm 99 mph
5th 0.972 : 1 @ 8000 rpm 123 mph
6th 0.780 : 1 @ 8000 rpm 153 mph



Weight Distribution Pre-Honda (KG)
Left Front - 133.0
Left Rear - 220.5
Right Front - 149.5
Right Rear - 216.0
Front - 282.5 (39%)
Rear - 436.5 (61%)
Total Curb weight 719.0 KG



Weights Distribution Post-Honda (KG)
Left Front - 134.0 (- 1 )
Left Rear - 227.5 (+ 7.5 )
Right Front -151.0 (+ 2 )
Right Rear -222.5 (+ 6.5 )

The Actual weight distribution is exactly the same.
Front - 282.5 (39%)
Rear - 450.0 (61%)
Total Curb weight - 735.0 KG

The weights above were taken straight after conversion, they are not optimised.

These weights were done before and after conversion on proper Longacre corner weighting scales on a level floor
They were both done with a drained fuel tank and excludes soft top and hardware.
The only difference was changing from the Janspeed Supersport exhaust to our larger 6" Sports Silencer, which is 1.2 kg heavier than the Janspeed, but quieter for track days.
So as you can see there is LESS than a 15 kg difference, this would be negated to almost zero difference if your car has a completely standard exhaust system as the original equipment silencer and catalytic converter weigh nearly 10 kg more than our sports silencer.
Add a lightweight flywheel & our aluminium belled discs and it will be lighter than the standard Elise.

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