what's your speed at 4000 rpm

D15, D16, D17 and Mini-Me swaps
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what's your speed at 4000 rpm

By sensei
- Wed Jul 18, 2012 2:32 am #311298 ok.. backstory is I had to pull the speedo face off to remove the airbag light.

I thought I put it back together exactly right, but my speedo is off.

At 4000 rpm I'm at 100 mph. I'm thinking it should be around 80 mph.

So if there's anyone out there who can help me. Look at your speedo at 4000rpm in 5th and let me know your speed.

Thanks guys.

95si :thumb:
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By TrailerTrash
- Wed Jul 18, 2012 2:45 am #311300 are you sure you have an si tranny? what sie wheels/tires?

go to wally world buy a $100 tomtom, use it to dial in your speedo, and return it :lol:
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By sensei
- Wed Jul 18, 2012 2:50 am #311303
TrailerTrash wrote:are you sure you have an si tranny? what sie wheels/tires?

go to wally world buy a $100 tomtom, use it to dial in your speedo, and return it :lol:


yeah, the speedo was correct before fucked with it.

I have LS meshies with standard size tires for the wheel. Don't remember the exact size of the tire

LOL good idea.. I actually have a garmin somewhere, but can't find it.

By endlessEG
- Wed Jul 18, 2012 3:15 am #311306 if you have a smartphone it can do it over the gps on the phone, atleast give you your speed
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By sensei
- Wed Jul 18, 2012 3:53 am #311311
endlessEG wrote:if you have a smartphone it can do it over the gps on the phone, atleast give you your speed


unfortunately I don't :(

By endlessEG
- Wed Jul 18, 2012 4:02 am #311312 well then the old fashion way get a friend and ask him how fats hes going next to you 8)
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By JUICE
- Wed Jul 18, 2012 11:57 pm #311444 Well, using that trans calc.. 195/55/15 tires @ 4000 rpm with a d-series 92-95 Si tranny, goes 87.54 mph in 5th gear
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By sensei
- Thu Jul 19, 2012 12:49 am #311446
JUICE wrote:Well, using that trans calc.. 195/55/15 tires @ 4000 rpm with a d-series 92-95 Si tranny, goes 87.54 mph in 5th gear


ah cool, I see the how it works now. Thanks. I was thinking closer to 80 mph. I normally cruise at 4000 rpm in 5th when the speed limit is 75. I'm pretty sure I'm not going 87+ mph though. I'd like to see what someone else's speedo says at that rpm to verify.
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By sensei
- Thu Jul 19, 2012 12:51 am #311449 correction. Just went and looked, and I have 50 series tires. According to the calculator that brings me down to 84 and some change @ 4000 rpm. That is definitely closer to what I think my speed is.
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By Wicked
- Thu Jul 19, 2012 3:40 am #311467 I'm doing 115.53 @ 4k xD. At the top of 5th (6k) I'm doing 173.29. My car almost does 200 :thumb: 8)
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By sensei
- Thu Jul 19, 2012 4:56 am #311470
Wicked wrote:I'm doing 115.53 @ 4k xD. At the top of 5th (6k) I'm doing 173.29. My car almost does 200 :thumb: 8)


sounds insane!

I guess I should have specified stock si :thumb:
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By suspendedHatch
- Sat Jul 21, 2012 2:52 am #311582 Engine power has no bearing. Only those items in the calculator.
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By sensei
- Sat Jul 21, 2012 2:54 am #311583
suspendedHatch wrote:Engine power has no bearing. Only those items in the calculator.


I assume he has non-stock gears or trans if he's going 200 mph lol
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