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Old 12-09-2018, 03:03 AM   #31
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Default Re: What should the RPM's be at 70 mph

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Originally Posted by calbiker View Post
Should be around 2640 rpm at 70.
that is exactly where my 2017 144 is at
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Old 12-09-2018, 03:54 AM   #32
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Default Re: What should the RPM's be at 70 mph

Could someone analog this pic. with some algebra and forecast what the rpm would be @ 70mph?
image.jpg
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Old 12-09-2018, 10:58 AM   #33
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Default Re: What should the RPM's be at 70 mph

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Originally Posted by CJPJ View Post
Could someone analog this pic. with some algebra and forecast what the rpm would be @ 70mph?
Attachment 104925
If I read the figures as 53 mph and 2,200 rpm then the algebra is:

2,200 / 53 x 70

So at 70 mph would be approx 2,900 rpm.

But do bear in mind your speedo will likely be over reading by maybe 2 to 3 mph so can you get an accurate speed either from GPS or through CAN with something like a ScanGauge II?

Keith.
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Old 12-09-2018, 02:05 PM   #34
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Default Re: What should the RPM's be at 70 mph

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Originally Posted by hippy View Post
Today I did 70mph it was 3200rpm
Sounds like mine...in 4th gear! 2600 in 5th rolling at ~10,800lbs.
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