Speed at given RPM?
Thread Starter
Joined: Jun 2002
Posts: 4,403
Likes: 4
From: Avondale, Arizona
Speed at given RPM?
I don't have the fsm or anything handy since I'm at work.
I was out late one night and did a highway run. Just for fun and too see how she did at those rpms/speeds.
My speedo does have a low 20mph< wobble but smooths out. So I figure that my speedo isn't the greatest to read from.
I have 245x40x17 on the back so the stock ratio is very close. Under 1% variance I think.
So with the stock rearend in 5th gear in a TII tranny what's 6k rpm's equate to?
It said I was in the 135mph range. Did it with windows down and sunroof cracked too. :P
Oh yeah and for the speed bitchers. I don't need it. I know it is reckless and it's the first time I've done those speeds in a long time and I did it on a stretch with no one else there.
I was out late one night and did a highway run. Just for fun and too see how she did at those rpms/speeds.
My speedo does have a low 20mph< wobble but smooths out. So I figure that my speedo isn't the greatest to read from.
I have 245x40x17 on the back so the stock ratio is very close. Under 1% variance I think.
So with the stock rearend in 5th gear in a TII tranny what's 6k rpm's equate to?
It said I was in the 135mph range. Did it with windows down and sunroof cracked too. :P
Oh yeah and for the speed bitchers. I don't need it. I know it is reckless and it's the first time I've done those speeds in a long time and I did it on a stretch with no one else there.
Thread Starter
Joined: Jun 2002
Posts: 4,403
Likes: 4
From: Avondale, Arizona
Just checked some online calculator.
With a 5th gear ratio of 0.762 @ 6krpm with 4.10 rearend and my tires it said I was doing 136.3 MPH.
I guess my speedo isn't off by that much after all.
With a 5th gear ratio of 0.762 @ 6krpm with 4.10 rearend and my tires it said I was doing 136.3 MPH.
I guess my speedo isn't off by that much after all.
Thread
Thread Starter
Forum
Replies
Last Post
rgordon1979
3rd Generation Specific (1993-2002)
40
Mar 15, 2022 12:04 PM
Jeff20B
1st Generation Specific (1979-1985)
73
Sep 16, 2018 07:16 PM
[For Sale] Scratch & Dent, Used, and Open-Box Sale!
SakeBomb Garage
Vendor Classifieds
5
Aug 9, 2018 05:54 PM
The1Sun
New Member RX-7 Technical
5
Sep 15, 2015 04:45 PM



