RPM's to high in relation to speed ... - Page 2

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RPM's to high in relation to speed ...

This is a discussion on RPM's to high in relation to speed ... within the Veloster Performance forums, part of the Veloster Turbo Garage category; Ha, I remember about 80 on the interstate in my S2000 was about 4500 or so....

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    Ha, I remember about 80 on the interstate in my S2000 was about 4500 or so.

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    When I was driving a 5.7L tundra, the RPMs at 70 were about 2-2200. Then when I was driving a tC, the RPMs at 70 were almost 3000.
    V8's have a narrower rev window (terminology is wrong, but you understand) so there's no reason to be concerned that your 6700 redline VT is running high at 2400 at 60mph. That RPM is actually normal for economy cars.

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    Thank you guys for your answers. In general, guess any rpm below the red, though will affect MPG, should not hurt the engine, even cruising for a few hours, right?

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    Well, I wouldn't cruise for a few hours at 4000...

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    Going to work, i was doing 65 mph @ 2,500 rpm. Gonna take the turnpike going home and see where I'll be at 80 mph ...

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    Quote Originally Posted by rilagan View Post
    Going to work, i was doing 65 mph @ 2,500 rpm. Gonna take the turnpike going home and see where I'll be at 80 mph ...
    I can tell you at 90 it's around 2750, lol.

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    Quote Originally Posted by rilagan View Post
    that's good to know. I have an Infiniti QX56 which goes 70 @ 2,000 rpm, hence my question. totally different animal, I know, but still ...
    Many older cars (240z's, etc) used to not have overdrive whatsoever (the highest gear would be 1:1), and considering the final drive, it wasn't uncommon to cruise at 60 at 3500 rpms. V8's and other larger displacement engines (such as the v8 in your Infiniti) have higher end torque at much lower rpm's, those engines can tolerate low rpms at higher speeds

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