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ET and WT Conversion Chart

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Old Oct 16, 2003 | 10:44 AM
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ET and WT Conversion Chart

The following chart shows how much total engine horsepower, measured at the flywheel, is needed to run a particular Elapsed Time (ET) in the quarter mile at a given weight (including driver, fuel, etc.). Keep in mind this is under optimal conditions (TRaction, shifting, etc.) and assumes that your are utilizing every bit of power. In reality, very few cars run 100% of their optimum. Wheelspin, slow shifting, clutch slippage, and other factors reduce the amount of usable horsepower. Figure on adding as much as 10% to the power numbers below (or add a few tenths to the ET) to get a real world estimate.


ET (seconds) VEHICLE WEIGHT (pounds)
2600 2800 3000 3200 3400 3600 3800 4000
15.0 152 164 176 187 199 211 223 234
14.5 169 182 194 207 220 233 246 259
14.0 187 202 216 230 245 259 274 288
13.5 209 225 241 257 273 289 305 321
13.0 234 252 270 288 306 324 342 360
12.5 263 283 304 324 344 364 385 405
12.0 297 320 343 366 389 412 435 458
11.5 338 364 390 416 442 468 494 520
11.0 386 416 445 475 505 535 564 594
10.5 444 478 512 546 580 615 649 683
10.0 514 553 593 632 672 712 751 791
9.5 599 645 692 738 784 830 876 922
9.0 705 759 813 868 922 976 1,030 1,084
8.5 837 901 965 1,030 1,094 1,159 1,223 1,287
8.0 1,004 1,081 1,158 1,235 1,312 1,390 1,467 1,544

Sorry guys they don't even track cars in the 16's and 17's....

Anyways for Boe's Turbo Lancer to run 13.9 and his car weighs about 2800lbs, that means he must have about 202 crank hp. Just wanted to let you in on this. Obviously RRM's turbo kits don't give you as much HP as they claim and all the mod's he's done haven't added alot of HP. And that's why we've yet to see very many dyno's.
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Old Oct 16, 2003 | 10:51 AM
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actually you are incorrect with your paper racing.

Boe's car ran a 13.9 with large amounts of tire spin at launch and at shifts, he weighs more than 0 pounds so that effects the weight of the car, and by your own admissions the table is off from real world.

I wouldn't base assumptions off a cute table you found on the internet.
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Old Oct 16, 2003 | 10:55 AM
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Show me a dyno buddy.....Show me a dyno.......
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Old Oct 16, 2003 | 11:09 AM
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he i am just using your own words. you said there is as much as a 10% fudge factor.

that puts the 3000 pound lancer (boe aint a small chicken) at 218 assuming there was no wheel spin, there was lots. so lets factor 10% in that gives us 239 at the crank, which is more than RRM claims.

I agree without a dyno we wont know but i find it suprising how quickly you claim it to be untrue without ever witnessing, seeing or feeling a RRM turbo.
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Old Oct 16, 2003 | 11:16 AM
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Dyno me baby, dyno me.....
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