Fastest Miata
03-04-2009, 12:00 AM
#1
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Fastest Miata
What is the top speed of a miata?
Stock they are aerodynamically limited, but most of us are not anymore. At what speed do we redline 5th gear with various trans/rear combinations?
Stock they are aerodynamically limited, but most of us are not anymore. At what speed do we redline 5th gear with various trans/rear combinations?
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03-04-2009, 12:03 AM
#2
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By the way, I am assuming a stock redline of 7250ish, but I would assume a taller-than-stock gearing combination will give the highest top speed if it is an option.
The real question is: How fast has any miata ever gone under "its own" power?
The real question is: How fast has any miata ever gone under "its own" power?
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03-04-2009, 12:06 AM
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I've heard very high indicated speeds (speedo can be wildly inaccurate from car to car, mine is 10 percent off), but 140 actual speed is what most people have reported with the stock rear end. If you raised your rev limiter it would be higher, obviously.
With longer rear gears, I imagine you could go significantly faster, maybe 170, assuming you had the power. Stock nose gets super floaty at high speeds though.
With longer rear gears, I imagine you could go significantly faster, maybe 170, assuming you had the power. Stock nose gets super floaty at high speeds though.
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03-04-2009, 12:15 AM
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Hahaha mine was slow with its own power when I first got it I was wondering how fast it would go. I got it up to 110 and it pretty much stopped there, well I was slowly going faster but it probably would of took me another minute to get from 110 to 115 so I just let off. Now with the turbo I can pull strong all the way to red line in 5th, its about 130 I think, I'm not really paying to much attention to the spedo at that speed. I have a torson but I'm to lazy to look up my gear ratio so I'm not sure what it is.
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03-04-2009, 12:32 AM
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Blocking off the airflow at the front hurts ground clearance (obviously), but it solves the floaty problem pretty convincingly IMO. Emilio knows 1000x more about this area than me though. I'm basically copying his setup one step at a time.
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03-04-2009, 06:56 AM
#10
Fastest I've had mine was an indicated 135. Who knows how accurate that was, either way I doubt I had much left. The C5 really started walking away at that point.
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03-04-2009, 09:26 AM
#13
I've found Flyin Miata's gear calculator to be quite helpful. Flyin' Miata : Technical info : Gearing calculator
My speedometer reads dead on after I swapped the 4.30s gears for 4.10s, apparently it read about 5% fast originally. I'm sure my car could make it to 147 (redline in 5th), but I have little desire to take it there.
My speedometer reads dead on after I swapped the 4.30s gears for 4.10s, apparently it read about 5% fast originally. I'm sure my car could make it to 147 (redline in 5th), but I have little desire to take it there.
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03-04-2009, 09:57 AM
#14
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Ive done almost 140 at T hill, don't know what RPM though. The big scoop seemed to make the front of my car really stable, no problems at all, however my brake bias made the rear float right before turn in, that was sketchy.
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