I am wondering, why is the rev limit is 6400rpm on the m157? I understand that there will be a reason for it, but does anyone know what it is? Has anyone ever successfully raised it? Is it even worth raising given the amount of torque it makes?
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I am wondering, why is the rev limit is 6400rpm on the m157? I understand that there will be a reason for it, but does anyone know what it is? Has anyone ever successfully raised it? Is it even worth raising given the amount of torque it makes?
Not sure on the reason but I'd have thought little point raising it given the torque lower down the range, as you say. I think Peak power is under 6k rpm and starts to drop off fairly quickly above that as the turbos run out out of puff.I am wondering, why is the rev limit is 6400rpm on the m157? I understand that there will be a reason for it, but does anyone know what it is? Has anyone ever successfully raised it? Is it even worth raising given the amount of torque it makes?
Rev limits are imposed to ensure that the engine doesn’t achieve a speed at which something in it lets go. That could be anything from overstressing a con-rod, piston, the crank, or even the valve train losing control of the valves.I understand that there will be a reason for it, but does anyone know what it is?
No.Is it even worth raising given the amount of torque it makes?
Lol. My current car has an engine that revs higher than the M156. I see the M156 as a backwards step.Yeah you can raise it, you got to put a M156 in it!! The big daddyrelease that rpm
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Makes sense, but I'd wager running out of puff goes away with a remap. It does seem odd for a modern engine of that capacity to rev so low. It seems old school American like.Not sure on the reason but I'd have thought little point raising it given the torque lower down the range, as you say. I think Peak power is under 6k rpm and starts to drop off fairly quickly above that as the turbos run out out of puff.
I think it's a fairly similar curve up top even after remap on this engine. The main difference being the increase in mid range torque. Looking at my dyno plot, peak power is 5750rpm after remap.Makes sense, but I'd wager running out of puff goes away with a remap. It does seem odd for a modern engine of that capacity to rev so low. It seems old school American like.
Well, that’s the blue touchpaper well and truly litI see the M156 as a backwards step.
Well, that’s the blue touchpaper well and truly lit
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Lol. My current car has an engine that revs higher than the M156. I see the M156 as a backwards step.
Would that be that Mpower plant piece of Garbage your welcome to it
For your information I couldn't care what step I have forward back or sideways. Im over the moon with what the M156 offers. It doesn't seem the case with yourself changing from one brand to another. Get the self imploding m157 it will go well with your self imploding E60![]()
Stop telling lies slim -The M156 only won it once.
Absolutely true. The area under the torque curve is always a good indicator of the relative on-road performance of different engines.actually in every day driving unless you only ever drive with your pants on fire with the needle in the red segment, its torque that really matters
Agree, who would want to own one hey -I see the M156 as a backwards step.
Well, clearly you do, else you wouldn't be posting about it at every opportunity.
Ah yes, the S85 V10. Yes it can be unreliable, but that doesn't make it a bad engine. It won engine of the year twice. The M156 only won it once.
The thing about cars is that it isn't the car that's bad, it's the owner. Owners ruin good cars by being ultracrepidarians. I've noticed a few on here of late, ruins the car. Yourself and sbk844 are the perfect examples of misologists.
Just been out for a drive in your Jag ?Yawn![]()
Just been out for a drive in your Jag ?
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