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8 & 10 cyl Bristol cars Type 407 onwards - restoration, repair, maintenance etc

Upgrading the 410 Final Drive Ratio

 
 
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Old 10-10-23, 08:02 PM
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No worries, Andrew. Having had a bit more time to think I'm not sure how much it would tell us. I was thinking of the torque converter purely as a fluid coupling but there's more to it than that. At lower speeds my understanding is that input RPM and output RPM can be quite different with attendant torque multiplication but I don't understand is how this relates to efficiency and therefore MPG.
Enough pontification, it's time for me to hurry up that gearbox installation and then report before and after EFI MPG figures.
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