6cyl Chris
Member
Top post Tom!!
With the labour cost then justified, I calculate approximately 30-35k miles at >60mph would constitute a breakeven point. (That's probably 6-7 years for me in my current circumstances, so I shan't be taking the decision lightly)
I know exactly what Jarmoke and Maso mean, and as such, whilst I know it's subjective, I would be inclined to add maybe 50-100rpm to Mike's figures, but otherwise, an excellent observation.I find that the sweet spots are:
* 1250rpm for very low load (downhill, steady low speed driving, etc),
* 1400rpm for steady medium loads
* 1750rpm peak efficiency (gentle hills, 60mph, 197BSFC on the chart)
* up to 2000/2200rpm when you want to accelerate (torque peak)
This is my line of thought aswell!Argh. It's just such a costly upgrade...
If I need to get my 2nd/3rd gear synchro looked at and the clutch replaced at some point, I suppose it could be argued that the box will be broken out then anyway so why not, but....
With the labour cost then justified, I calculate approximately 30-35k miles at >60mph would constitute a breakeven point. (That's probably 6-7 years for me in my current circumstances, so I shan't be taking the decision lightly)
Think how much fuel you could fo bought for that!!Spending e70 on a gearknob was a bit of a luxury.