1st gear speed

[enigma]

whats the maximum top speed for a 1.9 Tdi in first gear at full revs running 175bhp and 306lbs

 

[danwfr]

i would say about 25mph maybe a bit more

 

[Jonny]

Depends on the gear ratio... can you be more specific? What car is it?

Power / torque will have no effect on 1st gear top speed, the speed is limited by the gear ratio... only difference is, more power / torque will get you there quicker.

 

[sssstew]

why would you want max speed in 1st anyway?

 

[enigma]

im asking as i get around 20mph in first and first gear seems to run out very quickly and i was concerned it was due to clutch slip , however i dont get symptoms of clutch slip in say 4th or 5th could it just be first or just that 1st gear is just short ?

 

[JamesL]

1st is just very short

 

[stuart88]

agreed the first gear in a diesel is much shorter than in a petrol

i have a pd150 and 1st is very short as in most diesels

stu

 

[glynnd]

Mine will pull 30mph I am sure. Will just nudge 60 in 2nd. Gears are not short its just low revs. If its 6mph/1000rpm then a petrol engine at 7000rpm would be 42 mph. My old corolla t sport would crack 40 in 1st at 8200rpm.

 

[devonutopia]

I thought this was one of the first April Fools pranks of the day. Done at the stroke of midnight

With my old 5 speed setup it was roughly

1st gear 30mph
2nd gear 55mph
3rd gear 80mph
4th gear 105mph
5th gear 130mph (it would never go to 5000rpm obviously)

 

[jpcibiza90]

Mine will pull 30mph I am sure. Will just nudge 60 in 2nd. Gears are not short its just low revs. If its 6mph/1000rpm then a petrol engine at 7000rpm would be 42 mph. My old corolla t sport would crack 40 in 1st at 8200rpm.

corolla tsports are ace, i fancy one next. dont you miss the "lift"?

 

[Fl@pper]

agreed the first gear in a diesel is much shorter than in a petrol

i'd have said the opposite, having had a tdi box until recently i found it Very long geared and diff ratio'd compared to a petrol setup

might just seem that way due to the way a tdi operates

 

[glynnd]

corolla tsports are ace, i fancy one next. dont you miss the "lift"?

I do miss the lift and the reliabillity. But I would miss the performance of a 220 odd hp leon which will do 60 to 100 in 8 seconds! The corolla took about 12 iirc. Also the fuel economy on the tsport does not compare to the leon 25 versus 45, could not afford to run a tsport now