What should be the top speed of a 4x4 cossie

I tried today , 6000 rpm at 133 mp/h , does that soud correct?

 

Fast Ford quote 150mph, but I think that is just the manufacturers figures, I think nearer 140-145 is more the norm, not seen a road test as such.
best idea to look on web for road tests etc.
tabetha

 

you all drive cossie's , so what do others have , speed and rpm ?

 

6rpm in 5th and your speedo was showing 133mph??

 

yes 6000 rpm and 220k/h (220 is 133 miles hour)

i'm running 17 inch rims with 215/40/17 tyres

 

150 plus i would think

 

that aint right on my 2wd i have had my speedo over 160mph on a few ocassions!!you sure you got standard ratios etc?

 

it should be 141mph

 

http://www.gearboxman.co.uk/inforatios.html#download

 

i guess i best try a navi in the car and read the gps speed , prob the most accuarte way of knowing what speed i'm doing !

 

ive had mine round bout the 160 mph mark a couple of times(private test track ofcourse)
but all speedos read wrong, bout 10% out and i would assume that due to age of car it would b worse on a cossie,

be careful though holding the car on full throttle for long stints in 5th it can all go wrong quickly

 

i guess the speedo is miles out , rolling radius for std tyres size is different from the 17 inch

rev counter should be fine , it's on multi coils from stu !

i go to germany to do this , first proper motor way is 10 miles away from my house

 

dont quote me on this but i think at 2000rpm in first you will b doing 10mph
2nd-20mph
3rd-30mph
4th-40mph
5th-50mph

 

yes thats true even the the speedo is showing 160 plus probably ony doing a true 140 odd!but a cossie can do over 150 in standard format!

 

6000 rpm will be 150 miles/hour or 247, km/h

 

a 2wd saff will go off the clock on a stage three so thats well over 141 even if the speedo,s out

 

Gearbox: Five-speed Ford MT75.

Internal ratios: 1st, 3.62; 2nd, 2.08; 3rd, 1.36; 4th, 1:1; 5th, 0.83.

Final drive: 3.62:1, 22.24 mph per 1,000 rpm in 5th.

this is what i found at a geocities site

http://www.geocities.com/cossie21/

 

(optional)
shift point: 6000 RPM
rev drop speed MPH
1st to 2nd 2552 31
2nd to 3rd 2077 55
3rd to 4th 1588 84
4th to 5th 1020 114
5th top speed 137

engine speed 6000 rpm /roadspeed 137 mph / tyres size 205-50-15

 

(optional)
shift point: 6000 RPM
rev drop speed MPH
1st to 2nd 2552 32
2nd to 3rd 2077 56
3rd to 4th 1588 86
4th to 5th 1020 117
5th top speed 141




max engine speed 6000 rpm/roadspeed 141 mph / tyre size 215-40-17

 

they won't believe you beause your figures are based on maths and not arse dyno's as seen on youtube speedo videos

 

Funny but so true

 

It's just some figures , that's all i just wanted to know what the real speed is (or should be at 6000 rpm )

Regards Rob