Hi all,
'66 2a 109", 2.25 petrol; engine recently rebuilt, all new clutch components, gearbox rebuilt. All has been well and good for about 1,500 miles.
But, recently, I seem to be losing power in gears 2/3/4 when the clutch is disengaged. When starting from 1st, all seems normal. Then, when upshifting, if I press the accelerator as normal the engine revs as normal but the power seems to not be being transferred to the drive wheels, at least not immediately. Instead, the engine revs, and the power seems to be lost for awhile...that is, the engine is revving (in response to the accelerator) but the truck is laboring to find the power. If I back off the accelerator, I can avoid this -- so, if I accelerate very slowly after a gear change, the power will ramp up slowly and do its job. But, if I accelerate too quickly (that is, in the manner I always used to accelerate, which is not quick at all), the engine revs but the truck doesn't speed up at first. If I maintain the power to the engine when this happens, eventually the truck will "catch up" to the revs and the engine power gets transferred to the wheels. It's as if I have the overdrive selected when I'm in gears 2 / 3 / 4 (I do not).
To test the clutch, if I start from a stop in 3rd or 4th gear, I feel no slippage and the truck stalls (as one would expect). Also, as mentioned, the problem does not seem to occur in 1st gear, when cold or warm.
Any ideas as to what is going on?
Thanks in advance.
'66 2a 109", 2.25 petrol; engine recently rebuilt, all new clutch components, gearbox rebuilt. All has been well and good for about 1,500 miles.
But, recently, I seem to be losing power in gears 2/3/4 when the clutch is disengaged. When starting from 1st, all seems normal. Then, when upshifting, if I press the accelerator as normal the engine revs as normal but the power seems to not be being transferred to the drive wheels, at least not immediately. Instead, the engine revs, and the power seems to be lost for awhile...that is, the engine is revving (in response to the accelerator) but the truck is laboring to find the power. If I back off the accelerator, I can avoid this -- so, if I accelerate very slowly after a gear change, the power will ramp up slowly and do its job. But, if I accelerate too quickly (that is, in the manner I always used to accelerate, which is not quick at all), the engine revs but the truck doesn't speed up at first. If I maintain the power to the engine when this happens, eventually the truck will "catch up" to the revs and the engine power gets transferred to the wheels. It's as if I have the overdrive selected when I'm in gears 2 / 3 / 4 (I do not).
To test the clutch, if I start from a stop in 3rd or 4th gear, I feel no slippage and the truck stalls (as one would expect). Also, as mentioned, the problem does not seem to occur in 1st gear, when cold or warm.
Any ideas as to what is going on?
Thanks in advance.
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