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> Engine RPM vs Vehicle Speed
post Jul 13, 2011 - 2:20 PM
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azian_advanced



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Here's a graph of a 6gc with an S54 (ST202 non-superstrut and all ST204), C52 (AT200), E56 (ST202 with superstrut), E153 (swapped camry v6 or MR2 turbo tranny), and E154F (ST205) gearboxes showing the vehicle speed for various engine speeds for all 5 gears on stock wheels & tires.



mph









km/h










For those of you running aftermarket wheels & tires, you can download the .xlsx (Microsoft Excel 2007+) file from here: DOWNLOAD (80 KB)

the file's protected so to edit the spreadsheet, click on the "Review" tab in Excel, click "Unprotect Sheet" and enter the password "6gc". then you just need to input your wheel & tire sizes in the correct tab (ie. S54, C52, E56, etc.), press Enter, and the graphs will update themselves.

the estimate assumes no deflection in the tires. in other words, the tires are solid and don't conform to the road (ie. no weight on the tires). so this is an over-estimate of the actual speed as the deflection in the tires depends on the tire stiffness, sidewall profile, type of tire, vehicle weight, etc.

This post has been edited by azian_advanced: Jul 23, 2011 - 10:20 PM


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post Jul 13, 2011 - 3:21 PM
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Hafkai



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Nice table! But you got a little error in it.

The calculation for the tire diameter should look like this =(I4*25,4)+2*(E4*G4/100) instead of =(I4*25,4)+(E4*G4/100) smile.gif
post Jul 13, 2011 - 3:34 PM
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playboymma



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what would be perfect is if you could show the graphs you have on each tab instead of one merged graph to eliminate all confusion


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post Jul 13, 2011 - 4:15 PM
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azian_advanced



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QUOTE (Hafkai @ Jul 13, 2011 - 2:21 PM) *
Nice table! But you got a little error in it.

The calculation for the tire diameter should look like this =(I4*25,4)+2*(E4*G4/100) instead of =(I4*25,4)+(E4*G4/100) smile.gif



QUOTE (playboymma @ Jul 13, 2011 - 2:34 PM) *
what would be perfect is if you could show the graphs you have on each tab instead of one merged graph to eliminate all confusion



original post updated.. thanks for the feedback guys


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post Jul 13, 2011 - 4:45 PM
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3WayStunna

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Wow this is pretty awesome..thanks for sharing


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post Jul 13, 2011 - 6:02 PM
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playboymma



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STICKY VOTE


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post Jul 13, 2011 - 8:50 PM
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NYp8tBaller07



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nice, always wondered this


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post Jul 15, 2011 - 10:34 AM
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HectortheRican



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Hell yes, I've got 17x7.5 wheels and 215/40/17 tires, and all my values are lower compared to the graph.


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post Jul 15, 2011 - 1:04 PM
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Neon90424

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my 205 goes to about 50-60 km/h not 80km/h


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post Jul 15, 2011 - 7:27 PM
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delusionz



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Yeah, I'm pretty damn sure that when I hit 7000 RPM in 1st gear in my ST205, I'm about 4km/h faster than what you have -- 35 miles = 56.32704 kilometers


Forget about tyre size too, the speedo is pretty dead on when you have factory sized tyres , 1 size up is about 1-2% under reading, 1 size down is about 1-2% over reading

This post has been edited by delusionz: Jul 15, 2011 - 7:28 PM


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post Jul 15, 2011 - 8:04 PM
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delusionz



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2nd gear hits dead on 100km/h in 2nd at 7000


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Mike W
1996 Toyota Celica ST205 GT-FOUR
GT2860RS turbine, TiAL mvr44, JE 86.5φ piston, Clutchmasters FX400, APEX P-FC
269awhp / 273ft-lbs
post Jul 15, 2011 - 9:38 PM
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Neon90424

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my bad didnt realize the chart went to 8000


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post Jul 22, 2011 - 4:17 AM
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Rusty



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Great stuff, will add this along with others to the stickies tomorrow.

could you also add the E56, I can pm you the ratio's of you need them. and maybe also the E153?


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post Jul 22, 2011 - 12:52 PM
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azian_advanced



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sure thing. i'm feeling a little bored anyway rolleyes.gif


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post Jul 22, 2011 - 2:29 PM
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Needles



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i have the e153 mr2 and at 120 km/h i run 3800 rpm in 5th gear
post Jul 23, 2011 - 10:28 PM
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azian_advanced



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QUOTE (Rusty @ Jul 22, 2011 - 4:17 AM) *
could you also add the E56, I can pm you the ratio's of you need them. and maybe also the E153?


update: added the E56 and E153 to the OP


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