Top speed for SEIW 2.0 zetec

[geothro]

I have a 2.0 litre seiw zetec westfield with a 3.92 Diff and MT75 gearbox running on 195x50 15 tyres and using GSXR throttle bodies.  

What would be a true top speed for the car.

I have worked out the speed from a table on westfield world it would be around 140 mph a little fast I feel.

[davidgh]

Most Se7en's top speeds are limited by aerodynamic drag rather than gearing. The Se7en shape is anything but slippery and, generally, you'll need to have in excess of 200bhp to see much above 125mph.

HTH

[sedsy]

download gear calc it will tell you you just input the ratios etc.

Will mail it to you if you pm me your email address

[Peter M]

Put speed down as 110 mph.The speed you use must be below the speed rating for your tyres.

[SwissWesty]

QUOTE

download gear calc it will tell you you just input the ratios etc

Nice calculator, very helpful, thanks.

[Kevin Wood]

As Peter M said, don't go mad with the top speed. Check the rating of your tyres and make sure you don't declare more than that. At the end of the day, no-one can prove it one way or the other so as long as the figure is reasonable  it won't be questioned.

Kevin

[chappers]

MY 1800 zetec (155bhp) with 195/50/15 tyres and 3.92 diff and windscreen has done 128mph (according to my speedo) with still more to give, so perhaps 140 isn't far off. Good call about the tyre raking though.