Thanx Slob
The gearbox is, as you know, directly linked to your engine via the clutch plate and the speedo drive. So for instance the crank and flywheel makes one revolution the output shaft in 4th gear makes 2 or how many, I don’t know. But those revolutions on the gearbox are converted into km/h and that is what I need to know. So I'll be more specific: The revs in 4th gear at 110km/h on a series III gearbox.
The gearbox is, as you know, directly linked to your engine via the clutch plate and the speedo drive. So for instance the crank and flywheel makes one revolution the output shaft in 4th gear makes 2 or how many, I don’t know. But those revolutions on the gearbox are converted into km/h and that is what I need to know. So I'll be more specific: The revs in 4th gear at 110km/h on a series III gearbox.
4th gear is a direct drive from the engine so its 1:1......... you still need to know the diameter of yer tyres. as a bigger dia. tyre will cover more distance than a smaller dia. one. so armed with that info and yer diff ratios you should be able to work it out. would you like to borrow my calulator???
Okay the reason why I need this...I have loaded a 2L Toyota turbo diesel into my landy but I know the Landrover gearboxes where designed for petrol engines mainly. Petrol engines are normally high rev machines so I need to know the revs not to damage the diesel engine. Sure one can calculate the revs of the engine through the drive train but you still have to calculate it...I just hoped someone would know this info. Anyway I'm only concerned on what the speedometer is showing me not the actual speed I'm traveling that’s why the rest of the variables where of no value for one can lift the rear axle and check the speedometer and rev counter if one are so privileged to have one.
yella
New Member
let me get this right, you are asking this question so that you don't over rev the engine before changing gear?
if i am understanding this correctly can't you judge when to change gear by the sound of the engine? i never look at the rev counter to change gear i always do it by the engine note
if i have read this wrong then i'm sorry
if i am understanding this correctly can't you judge when to change gear by the sound of the engine? i never look at the rev counter to change gear i always do it by the engine note
if i have read this wrong then i'm sorry
When you have a engine as smooth running as this one you cant extinguish between engine revs and road noises properly. Switching gears is not the problem, its the top speed and I have calculated the revs at 2585 rpm when doing 110 km/h whith a wheel diameter of 0,765 m, which is high when using a diesel.
