Download - Car Engine Dynamics
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Displacement:
Bore 98.00 [mm] 3.858 [in]
Stroke 82.00 [mm] 3.228 [in]Cylinders 4
Displacement: 2474.1 [cm ] 150.98 [cui]
Over-square ratio 1.20 :1
Bottom end geometry
Deckheight 208.00 [mm] 8.189 [in]
Rod length 142.00 [mm] 5.591 [in]
Piston cr-height 28.00 [mm] 1.102 [in]
Deck in (+) deck out (-) -3.00 [mm] -0.118 [in]
Non-zero deck volume -22.63 [cm ] -1.38 [cui]
Rod length / Stroke ratio 1.732 :1
Head flycut depth 3.00 [mm] 0.118 [in]Head flycut 98.50 [mm] 3.878 [in]
Head flycut volume 22.86 [cm ] 1.40 [cui]
Head gasket volume
Dont mess with the fields in gray, thats wher
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Thickness compressed 1.00 [mm] 0.039 [in]
Inner diameter 98.50 [mm] 3.878 [in]
Volume: 7.62 [cm ] 0.47 [cui]
Squish band thickness 1.00 [mm] 0.039 [in]
Compression calc
Dome/valve relief volume 4.00 [cm3
] 0.24 [cui]Combustion chamber vol. 42.00 [cm
3] 2.56 [cui]
Compression ratio 12.49 :1
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Dynamics & statics Head & valves
Planned cutoff/dimensioning RPM 9200 [RPM] Peak power RPM 8500 [RPM]
Crank angle, ATDC 4 [] Min. int. cross sec. area 1387 [mm ]Mean piston velocity 25.1 [m/s] Round tube eqv. 42.0 [mm]
Instantaneous piston velocity. 3.55 [m/s] Int. valve stem 9.00 [mm]
Max. piston velocity. 41.11 [m/s] Int. valve throat 43.0 [mm]
@ Crank position ATDC 73.89 [] Min. intake valve 47.8 [mm]
Max. piston acceleration. (@TDC) 49043 [m/s ] Int valve lift 15.3 [mm]
4999.3 [Gs] Exh/int. flow ratio 70.0%
Instantaneous acceleration 48844 [m/s2] Min. exh. cross sec. area 971 [mm
2]
4979.0 [Gs] Round tube eqv. 35.2 [mm]
Piston position in mms from TDC 0.07 [mm] Exh. valve stem 9.00 [mm]
Exh. valve throath dia 36.3 [mm]
Optimum stroke calc Min. exh valve 40.3 [mm]Rod length / Stroke ratio 1.730 :1 Exh. valve lift 12.9 [mm]
Piston cr-height 28.00 [mm] Suggested venturi size 44 [mm]
Deck in (+) deck out (-) -3.00 [mm]
e youll find info!
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Stroke 82.06 [mm] Power potential
Rod length 141.97 [mm] Nat. aspirated @ 100% VE 280 [hp]
Other peak power VE 107% [%]
-> Nat. Aspirated power 300 [hp]
Cut diameter 74 [mm]
Cut depth 5.5 [mm]Reverse dome volume 23.7 [cm
3] Int. Valve diameter 49.28 [mm]
Int.->cyl. Clearance 2.86 [mm]
Exh. Valve diameter 40.64 [mm]
Exh.->cyl clearance 4.18 [mm]Int.->Exh. valve clearance 1.04 [mm]
Reverse dome help calculator
CIH valve / bore clearance
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141.7 Hz
Other valve 49.28 [mm] @ Corrected lift 14.8 [mm]
Suggested valve 52 [mm] Suggested int. valve lift 14.0 [mm]
Other valve 40.64 [mm] @ Corrected lift 12.8 [mm]Suggested valve 44 [mm] Suggested exh. valve lift 11.8 [mm]
Exhaust valve corrections
Intake valve corrections
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Crank angle [ATDC] Piston positon from TDC. Piston velocity. Piston acceleration.0 0.00 0.00 49043
1 0.00 0.89 49031
2 0.02 1.78 48993
3 0.04 2.66 48931
4 0.07 3.55 48844
5 0.11 4.43 48732
6 0.16 5.32 48595
7 0.22 6.19 48433
8 0.28 7.07 48247
9 0.36 7.94 48037
10 0.44 8.81 47802
11 0.54 9.68 4754412 0.64 10.54 47262
13 0.75 11.39 46956
14 0.87 12.24 46627
15 1.00 13.08 46274
16 1.14 13.92 45899
17 1.28 14.75 45502
18 1.44 15.57 45082
19 1.60 16.39 44641
20 1.78 17.19 44178
21 1.96 17.99 43693
22 2.15 18.78 43188
23 2.35 19.56 4266324 2.56 20.33 42118
25 2.78 21.09 41553
26 3.01 21.85 40969
27 3.24 22.59 40366
28 3.49 23.32 39745
29 3.74 24.03 39107
30 4.01 24.74 38451
31 4.28 25.44 37778
32 4.56 26.12 37090
33 4.85 26.79 36385
34 5.15 27.45 35666
35 5.45 28.09 34931
36 5.77 28.72 3418337 6.10 29.34 33421
38 6.43 29.94 32646
39 6.77 30.53 31859
40 7.13 31.11 31060
41 7.49 31.67 30250
42 7.86 32.21 29429
43 8.23 32.74 28598
44 8.62 33.26 27758
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45 9.02 33.76 26909
46 9.42 34.24 26052
47 9.84 34.71 25187
48 10.26 35.16 24316
49 10.69 35.60 23437
50 11.13 36.02 22554
51 11.58 36.42 2166552 12.03 36.81 20771
53 12.50 37.18 19874
54 12.97 37.53 18973
55 13.45 37.87 18070
56 13.94 38.19 17164
57 14.44 38.50 16257
58 14.95 38.78 15350
59 15.47 39.06 14442
60 15.99 39.31 13534
61 16.52 39.55 12627
62 17.06 39.77 11722
63 17.61 39.97 1081864 18.16 40.16 9918
65 18.72 40.33 9020
66 19.29 40.48 8126
67 19.87 40.62 7237
68 20.46 40.74 6352
69 21.05 40.84 5472
70 21.65 40.93 4599
71 22.26 41.00 3731
72 22.87 41.05 2870
73 23.49 41.09 2017
74 24.12 41.12 1171
75 24.75 41.12 334
76 25.39 41.12 -49577 26.04 41.09 -1315
78 26.69 41.05 -2126
79 27.35 41.00 -2926
80 28.02 40.93 -3717
81 28.69 40.85 -4497
82 29.37 40.76 -5266
83 30.05 40.65 -6024
84 30.73 40.52 -6770
85 31.43 40.38 -7504
86 32.12 40.23 -8226
87 32.82 40.07 -8936
88 33.53 39.89 -963389 34.24 39.70 -10317
90 34.95 39.50 -10988
91 35.67 39.29 -11645
92 36.39 39.06 -12289
93 37.11 38.82 -12919
94 37.84 38.58 -13536
95 38.57 38.32 -14138
96 39.31 38.05 -14726
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97 40.04 37.77 -15299
98 40.78 37.48 -15858
99 41.52 37.18 -16403
100 42.26 36.87 -16933
101 43.00 36.55 -17449
102 43.74 36.22 -17950
103 44.49 35.88 -18436104 45.23 35.54 -18908
105 45.98 35.19 -19365
106 46.72 34.82 -19808
107 47.47 34.46 -20236
108 48.21 34.08 -20649
109 48.95 33.70 -21048
110 49.70 33.31 -21433
111 50.44 32.91 -21803
112 51.18 32.51 -22160
113 51.91 32.11 -22502
114 52.65 31.69 -22831
115 53.38 31.27 -23146116 54.11 30.85 -23447
117 54.83 30.42 -23735
118 55.56 29.99 -24010
119 56.27 29.55 -24272
120 56.99 29.11 -24522
121 57.70 28.66 -24758
122 58.40 28.21 -24983
123 59.10 27.76 -25196
124 59.80 27.30 -25396
125 60.49 26.84 -25586
126 61.17 26.38 -25764
127 61.85 25.91 -25931
128 62.52 25.44 -26087129 63.18 24.97 -26234
130 63.84 24.50 -26370
131 64.49 24.03 -26496
132 65.13 23.55 -26613
133 65.76 23.07 -26720
134 66.38 22.59 -26819
135 67.00 22.11 -26909
136 67.61 21.62 -26991
137 68.21 21.14 -27066
138 68.79 20.65 -27132
139 69.37 20.16 -27192
140 69.94 19.68 -27244141 70.50 19.19 -27290
142 71.05 18.70 -27330
143 71.58 18.21 -27364
144 72.11 17.71 -27392
145 72.62 17.22 -27415
146 73.13 16.73 -27433
147 73.62 16.24 -27447
148 74.10 15.75 -27456
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149 74.56 15.25 -27461
150 75.02 14.76 -27463
151 75.46 14.27 -27461
152 75.89 13.77 -27457
153 76.31 13.28 -27449
154 76.71 12.79 -27439
155 77.10 12.29 -27427156 77.47 11.80 -27413
157 77.83 11.31 -27397
158 78.18 10.81 -27380
159 78.51 10.32 -27362
160 78.83 9.83 -27343
161 79.14 9.33 -27324
162 79.43 8.84 -27304
163 79.70 8.35 -27283
164 79.96 7.86 -27263
165 80.21 7.36 -27243
166 80.44 6.87 -27223
167 80.65 6.38 -27204168 80.85 5.89 -27186
169 81.03 5.40 -27169
170 81.20 4.91 -27152
171 81.35 4.42 -27137
172 81.49 3.92 -27123
173 81.61 3.43 -27110
174 81.71 2.94 -27099
175 81.80 2.45 -27090
176 81.87 1.96 -27082
177 81.93 1.47 -27076
178 81.97 0.98 -27071
179 81.99 0.49 -27068
180 82.00 0.00 -27068181 81.99 -0.49 -27068
182 81.97 -0.98 -27071
183 81.93 -1.47 -27076
184 81.87 -1.96 -27082
185 81.80 -2.45 -27090
186 81.71 -2.94 -27099
187 81.61 -3.43 -27110
188 81.49 -3.92 -27123
189 81.35 -4.42 -27137
190 81.20 -4.91 -27152
191 81.03 -5.40 -27169
192 80.85 -5.89 -27186193 80.65 -6.38 -27204
194 80.44 -6.87 -27223
195 80.21 -7.36 -27243
196 79.96 -7.86 -27263
197 79.70 -8.35 -27283
198 79.43 -8.84 -27304
199 79.14 -9.33 -27324
200 78.83 -9.83 -27343
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201 78.51 -10.32 -27362
202 78.18 -10.81 -27380
203 77.83 -11.31 -27397
204 77.47 -11.80 -27413
205 77.10 -12.29 -27427
206 76.71 -12.79 -27439
207 76.31 -13.28 -27449208 75.89 -13.77 -27457
209 75.46 -14.27 -27461
210 75.02 -14.76 -27463
211 74.56 -15.25 -27461
212 74.10 -15.75 -27456
213 73.62 -16.24 -27447
214 73.13 -16.73 -27433
215 72.62 -17.22 -27415
216 72.11 -17.71 -27392
217 71.58 -18.21 -27364
218 71.05 -18.70 -27330
219 70.50 -19.19 -27290220 69.94 -19.68 -27244
221 69.37 -20.16 -27192
222 68.79 -20.65 -27132
223 68.21 -21.14 -27066
224 67.61 -21.62 -26991
225 67.00 -22.11 -26909
226 66.38 -22.59 -26819
227 65.76 -23.07 -26720
228 65.13 -23.55 -26613
229 64.49 -24.03 -26496
230 63.84 -24.50 -26370
231 63.18 -24.97 -26234
232 62.52 -25.44 -26087233 61.85 -25.91 -25931
234 61.17 -26.38 -25764
235 60.49 -26.84 -25586
236 59.80 -27.30 -25396
237 59.10 -27.76 -25196
238 58.40 -28.21 -24983
239 57.70 -28.66 -24758
240 56.99 -29.11 -24522
241 56.27 -29.55 -24272
242 55.56 -29.99 -24010
243 54.83 -30.42 -23735
244 54.11 -30.85 -23447245 53.38 -31.27 -23146
246 52.65 -31.69 -22831
247 51.91 -32.11 -22502
248 51.18 -32.51 -22160
249 50.44 -32.91 -21803
250 49.70 -33.31 -21433
251 48.95 -33.70 -21048
252 48.21 -34.08 -20649
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253 47.47 -34.46 -20236
254 46.72 -34.82 -19808
255 45.98 -35.19 -19365
256 45.23 -35.54 -18908
257 44.49 -35.88 -18436
258 43.74 -36.22 -17950
259 43.00 -36.55 -17449260 42.26 -36.87 -16933
261 41.52 -37.18 -16403
262 40.78 -37.48 -15858
263 40.04 -37.77 -15299
264 39.31 -38.05 -14726
265 38.57 -38.32 -14138
266 37.84 -38.58 -13536
267 37.11 -38.82 -12919
268 36.39 -39.06 -12289
269 35.67 -39.29 -11645
270 34.95 -39.50 -10988
271 34.24 -39.70 -10317272 33.53 -39.89 -9633
273 32.82 -40.07 -8936
274 32.12 -40.23 -8226
275 31.43 -40.38 -7504
276 30.73 -40.52 -6770
277 30.05 -40.65 -6024
278 29.37 -40.76 -5266
279 28.69 -40.85 -4497
280 28.02 -40.93 -3717
281 27.35 -41.00 -2926
282 26.69 -41.05 -2126
283 26.04 -41.09 -1315
284 25.39 -41.12 -495285 24.75 -41.12 334
286 24.12 -41.12 1171
287 23.49 -41.09 2017
288 22.87 -41.05 2870
289 22.26 -41.00 3731
290 21.65 -40.93 4599
291 21.05 -40.84 5472
292 20.46 -40.74 6352
293 19.87 -40.62 7237
294 19.29 -40.48 8126
295 18.72 -40.33 9020
296 18.16 -40.16 9918297 17.61 -39.97 10818
298 17.06 -39.77 11722
299 16.52 -39.55 12627
300 15.99 -39.31 13534
301 15.47 -39.06 14442
302 14.95 -38.78 15350
303 14.44 -38.50 16257
304 13.94 -38.19 17164
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305 13.45 -37.87 18070
306 12.97 -37.53 18973
307 12.50 -37.18 19874
308 12.03 -36.81 20771
309 11.58 -36.42 21665
310 11.13 -36.02 22554
311 10.69 -35.60 23437312 10.26 -35.16 24316
313 9.84 -34.71 25187
314 9.42 -34.24 26052
315 9.02 -33.76 26909
316 8.62 -33.26 27758
317 8.23 -32.74 28598
318 7.86 -32.21 29429
319 7.49 -31.67 30250
320 7.13 -31.11 31060
321 6.77 -30.53 31859
322 6.43 -29.94 32646
323 6.10 -29.34 33421324 5.77 -28.72 34183
325 5.45 -28.09 34931
326 5.15 -27.45 35666
327 4.85 -26.79 36385
328 4.56 -26.12 37090
329 4.28 -25.44 37778
330 4.01 -24.74 38451
331 3.74 -24.03 39107
332 3.49 -23.32 39745
333 3.24 -22.59 40366
334 3.01 -21.85 40969
335 2.78 -21.09 41553
336 2.56 -20.33 42118337 2.35 -19.56 42663
338 2.15 -18.78 43188
339 1.96 -17.99 43693
340 1.78 -17.19 44178
341 1.60 -16.39 44641
342 1.44 -15.57 45082
343 1.28 -14.75 45502
344 1.14 -13.92 45899
345 1.00 -13.08 46274
346 0.87 -12.24 46627
347 0.75 -11.39 46956
348 0.64 -10.54 47262349 0.54 -9.68 47544
350 0.44 -8.81 47802
351 0.36 -7.94 48037
352 0.28 -7.07 48247
353 0.22 -6.19 48433
354 0.16 -5.32 48595
355 0.11 -4.43 48732
356 0.07 -3.55 48844
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357 0.04 -2.66 48931
358 0.02 -1.78 48993
359 0.00 -0.89 49031
360 0.00 0.00 49043
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Stroke 85 [mm]
Connecting rod length 134 [mm]
RPM 9200
Ref. piston pos. Ref. piston velocity. Ref. piston acc.0.00 0.00 51959
0.00 0.94 51945
0.02 1.88 51905
0.04 2.82 51837
0.07 3.76 51741
0.11 4.70 51619
0.16 5.63 51470
0.22 6.56 51293
0.28 7.49 51091
0.36 8.41 50861
0.44 9.33 50605
0.54 10.25 503230.64 11.16 50015
0.75 12.06 49682
0.87 12.96 49323
1.00 13.86 48939
1.13 14.74 48530
1.28 15.62 48096
1.43 16.49 47639
1.60 17.35 47158
1.77 18.20 46653
1.95 19.05 46125
2.15 19.88 45575
2.35 20.71 450032.55 21.52 44409
2.77 22.32 43794
3.00 23.12 43158
3.24 23.90 42502
3.48 24.67 41827
3.74 25.42 41132
4.00 26.17 40418
4.27 26.90 39687
4.55 27.62 38938
4.84 28.32 38172
5.14 29.01 37390
5.45 29.69 36593
5.77 30.35 357806.09 31.00 34953
6.43 31.63 34112
6.77 32.25 33258
7.13 32.85 32391
7.49 33.44 31513
7.86 34.01 30623
8.25 34.56 29723
8.64 35.10 28813
Reference engine concept data
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9.03 35.62 27894
9.44 36.12 26966
9.86 36.60 26031
10.29 37.07 25088
10.72 37.52 24139
11.17 37.96 23184
11.62 38.37 2222412.08 38.77 21260
12.55 39.15 20292
13.03 39.51 19321
13.52 39.86 18347
14.02 40.19 17372
14.53 40.49 16396
15.04 40.78 15419
15.56 41.05 14443
16.10 41.31 13468
16.64 41.54 12495
17.19 41.76 11523
17.74 41.96 1055518.31 42.14 9590
18.88 42.30 8629
19.47 42.45 7673
20.06 42.57 6722
20.65 42.68 5777
21.26 42.77 4839
21.87 42.85 3908
22.50 42.91 2984
23.13 42.94 2068
23.76 42.97 1161
24.41 42.97 263
25.06 42.96 -625
25.72 42.93 -150426.38 42.89 -2371
27.05 42.83 -3228
27.73 42.75 -4073
28.42 42.66 -4907
29.11 42.55 -5728
29.80 42.43 -6537
30.51 42.30 -7332
31.22 42.14 -8115
31.93 41.98 -8883
32.65 41.80 -9638
33.38 41.60 -10378
34.11 41.40 -1110434.84 41.18 -11815
35.58 40.95 -12511
36.33 40.70 -13192
37.07 40.44 -13858
37.83 40.17 -14507
38.58 39.89 -15141
39.34 39.60 -15759
40.10 39.30 -16361
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40.87 38.99 -16947
41.63 38.66 -17517
42.40 38.33 -18070
43.18 37.99 -18607
43.95 37.63 -19127
44.72 37.27 -19631
45.50 36.90 -2011946.28 36.53 -20590
47.06 36.14 -21045
47.84 35.75 -21484
48.61 35.35 -21906
49.39 34.94 -22312
50.17 34.52 -22702
50.95 34.10 -23076
51.72 33.68 -23435
52.50 33.24 -23777
53.27 32.81 -24105
54.04 32.36 -24417
54.81 31.92 -2471355.57 31.46 -24996
56.33 31.01 -25263
57.09 30.55 -25516
57.85 30.08 -25755
58.60 29.61 -25980
59.34 29.14 -26191
60.08 28.66 -26389
60.82 28.19 -26574
61.55 27.71 -26746
62.28 27.22 -26905
62.99 26.74 -27053
63.71 26.25 -27189
64.41 25.76 -2731365.11 25.27 -27427
65.80 24.77 -27529
66.49 24.28 -27621
67.16 23.78 -27703
67.83 23.29 -27776
68.49 22.79 -27839
69.14 22.29 -27894
69.78 21.79 -27940
70.41 21.29 -27977
71.03 20.79 -28008
71.64 20.29 -28030
72.24 19.79 -2804672.83 19.29 -28055
73.41 18.78 -28058
73.98 18.28 -28056
74.53 17.78 -28048
75.08 17.28 -28035
75.61 16.78 -28017
76.13 16.28 -27995
76.64 15.78 -27969
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77.13 15.28 -27940
77.61 14.78 -27907
78.08 14.28 -27872
78.53 13.78 -27834
78.97 13.28 -27794
79.40 12.78 -27753
79.81 12.28 -2771080.21 11.79 -27666
80.59 11.29 -27621
80.96 10.80 -27575
81.31 10.30 -27530
81.65 9.81 -27484
81.97 9.31 -27439
82.27 8.82 -27395
82.57 8.32 -27352
82.84 7.83 -27309
83.10 7.34 -27268
83.34 6.85 -27229
83.57 6.36 -2719183.78 5.87 -27156
83.97 5.38 -27123
84.15 4.89 -27092
84.31 4.40 -27063
84.46 3.91 -27037
84.58 3.42 -27014
84.69 2.93 -26994
84.79 2.44 -26976
84.86 1.95 -26962
84.92 1.46 -26951
84.97 0.98 -26943
84.99 0.49 -26938
85.00 0.00 -2693684.99 -0.49 -26938
84.97 -0.98 -26943
84.92 -1.46 -26951
84.86 -1.95 -26962
84.79 -2.44 -26976
84.69 -2.93 -26994
84.58 -3.42 -27014
84.46 -3.91 -27037
84.31 -4.40 -27063
84.15 -4.89 -27092
83.97 -5.38 -27123
83.78 -5.87 -2715683.57 -6.36 -27191
83.34 -6.85 -27229
83.10 -7.34 -27268
82.84 -7.83 -27309
82.57 -8.32 -27352
82.27 -8.82 -27395
81.97 -9.31 -27439
81.65 -9.81 -27484
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81.31 -10.30 -27530
80.96 -10.80 -27575
80.59 -11.29 -27621
80.21 -11.79 -27666
79.81 -12.28 -27710
79.40 -12.78 -27753
78.97 -13.28 -2779478.53 -13.78 -27834
78.08 -14.28 -27872
77.61 -14.78 -27907
77.13 -15.28 -27940
76.64 -15.78 -27969
76.13 -16.28 -27995
75.61 -16.78 -28017
75.08 -17.28 -28035
74.53 -17.78 -28048
73.98 -18.28 -28056
73.41 -18.78 -28058
72.83 -19.29 -2805572.24 -19.79 -28046
71.64 -20.29 -28030
71.03 -20.79 -28008
70.41 -21.29 -27977
69.78 -21.79 -27940
69.14 -22.29 -27894
68.49 -22.79 -27839
67.83 -23.29 -27776
67.16 -23.78 -27703
66.49 -24.28 -27621
65.80 -24.77 -27529
65.11 -25.27 -27427
64.41 -25.76 -2731363.71 -26.25 -27189
62.99 -26.74 -27053
62.28 -27.22 -26905
61.55 -27.71 -26746
60.82 -28.19 -26574
60.08 -28.66 -26389
59.34 -29.14 -26191
58.60 -29.61 -25980
57.85 -30.08 -25755
57.09 -30.55 -25516
56.33 -31.01 -25263
55.57 -31.46 -2499654.81 -31.92 -24713
54.04 -32.36 -24417
53.27 -32.81 -24105
52.50 -33.24 -23777
51.72 -33.68 -23435
50.95 -34.10 -23076
50.17 -34.52 -22702
49.39 -34.94 -22312
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48.61 -35.35 -21906
47.84 -35.75 -21484
47.06 -36.14 -21045
46.28 -36.53 -20590
45.50 -36.90 -20119
44.72 -37.27 -19631
43.95 -37.63 -1912743.18 -37.99 -18607
42.40 -38.33 -18070
41.63 -38.66 -17517
40.87 -38.99 -16947
40.10 -39.30 -16361
39.34 -39.60 -15759
38.58 -39.89 -15141
37.83 -40.17 -14507
37.07 -40.44 -13858
36.33 -40.70 -13192
35.58 -40.95 -12511
34.84 -41.18 -1181534.11 -41.40 -11104
33.38 -41.60 -10378
32.65 -41.80 -9638
31.93 -41.98 -8883
31.22 -42.14 -8115
30.51 -42.30 -7332
29.80 -42.43 -6537
29.11 -42.55 -5728
28.42 -42.66 -4907
27.73 -42.75 -4073
27.05 -42.83 -3228
26.38 -42.89 -2371
25.72 -42.93 -150425.06 -42.96 -625
24.41 -42.97 263
23.76 -42.97 1161
23.13 -42.94 2068
22.50 -42.91 2984
21.87 -42.85 3908
21.26 -42.77 4839
20.65 -42.68 5777
20.06 -42.57 6722
19.47 -42.45 7673
18.88 -42.30 8629
18.31 -42.14 959017.74 -41.96 10555
17.19 -41.76 11523
16.64 -41.54 12495
16.10 -41.31 13468
15.56 -41.05 14443
15.04 -40.78 15419
14.53 -40.49 16396
14.02 -40.19 17372
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13.52 -39.86 18347
13.03 -39.51 19321
12.55 -39.15 20292
12.08 -38.77 21260
11.62 -38.37 22224
11.17 -37.96 23184
10.72 -37.52 2413910.29 -37.07 25088
9.86 -36.60 26031
9.44 -36.12 26966
9.03 -35.62 27894
8.64 -35.10 28813
8.25 -34.56 29723
7.86 -34.01 30623
7.49 -33.44 31513
7.13 -32.85 32391
6.77 -32.25 33258
6.43 -31.63 34112
6.09 -31.00 349535.77 -30.35 35780
5.45 -29.69 36593
5.14 -29.01 37390
4.84 -28.32 38172
4.55 -27.62 38938
4.27 -26.90 39687
4.00 -26.17 40418
3.74 -25.42 41132
3.48 -24.67 41827
3.24 -23.90 42502
3.00 -23.12 43158
2.77 -22.32 43794
2.55 -21.52 444092.35 -20.71 45003
2.15 -19.88 45575
1.95 -19.05 46125
1.77 -18.20 46653
1.60 -17.35 47158
1.43 -16.49 47639
1.28 -15.62 48096
1.13 -14.74 48530
1.00 -13.86 48939
0.87 -12.96 49323
0.75 -12.06 49682
0.64 -11.16 500150.54 -10.25 50323
0.44 -9.33 50605
0.36 -8.41 50861
0.28 -7.49 51091
0.22 -6.56 51293
0.16 -5.63 51470
0.11 -4.70 51619
0.07 -3.76 51741
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0.04 -2.82 51837
0.02 -1.88 51905
0.00 -0.94 51945
0.00 0.00 51959
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-40
-30
-20
-10
0
100
200
300
400
500
600
700
800
-60.00
-50.00
-40.00
-30.00
-20.00
-10.00
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
90.00
100.00
110.00
120.00
010
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
360
Position;Speed
[mm;m/s]
Crankshaft position [ATDC]
Piston dynamics JE Speed Parts 2001
Ref. piston pos. Ref. piston velocity. Piston positon from TDC. Piston velocity. Ref. piston acc. Piston accelerat
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Air temp 20 [C]
M 28.96 [kg/kmol]
Speed of sound 343 [m/s]1126 [ft/s]
RPM 5000 [/min]
Runner length 412 [mm] Tolerance
Min. runner length 336 [mm] -76.2Max. runner length 488 [mm] 76.2
RPM 7000 [/min]
Runner length 345 [mm] Tolerance
Min. runner length 327 [mm] -18.4
Max. runner length 364 [mm] 18.4
Dont mess with the fields in gray, thats where youll find info!
Basic air data calculation
Ram induction theory
"Stopped" organ pipe theory
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Cam data to event timing Event timing to cam data
Intake duration 324.0 [ Crankshaft] Intake opens before TDC 42.0
Exhaust duration 324.0 [ Crankshaft] Intake closes after BDC 78.0
Lobe Separation 112.0 [ Camshaft] Exhaust opens before BDC 82.0Cam advance (+) / retard (-) 0.0 [ Crankshaft] Exhaust closes after TDC 46.0
Intake lobe centerline 112.0 [ ATDC] Intake duration 300.0
Intake opens before TDC 50.0 [ BTDC] Exhaust duration 308.0
Intake closes after BDC 94.0 [ ABDC] Lobe Separation 108.0
Exhaust lobe centerline 112.0 [ BTDC] Cam advance (+) / retard (-) 0.0
Exhaust opens before BDC 94.0 [ BBDC] Intake lobe centerline 108.0
Exhaust closes after TDC 50.0 [ ATDC] Exhaust lobe centerline 108.0
Overlap 100.0 [ Crankshaft] Overlap 88.0
Displacement per cylinder 618 [cm3/cyl.]
Max. power RPM 8500 [RPM]Camshaft advertised duration 348 [ Crankshaft]
Simple CIH cam duration selector
Dont mess with the fields in gray, thats where youll find info!
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[ BTDC]
[ ABDC]
[ BBDC][ ATDC]
[ Crankshaft]
[ Crankshaft]
[ Camshaft]
[ Crankshaft]
[ ATDC]
[ BTDC]
[ Crankshaft]
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Engine: #1 #2 #3 #4 #5 #6 #7
HP/Liter Mean VE RPM VE VE VE VE VE VE VE
50 85% 2500 90.5% 90.0% - - 91.0% 90.0% 76.0%
65 90% 3000 90.5% 91.0% - - 93.0% 93.0% 78.0%
80 95% 3500 90.5% 93.5% 85.5% - 95.0% 102.0% 80.0%
95 100% 4000 92.0% 91.5% 84.0% 89.0% 97.0% 119.0% 85.5%
110 105% 4500 94.0% 94.0% 107.5% 98.0% 99.0% 127.5% 83.5%
125 110% 5000 97.0% 93.0% 108.0% 100.5% 97.0% 128.0% 83.5%
140 115% 5500 92.0% 87.0% 112.0% 103.0% 95.0% 124.5% 81.5%
155 120% 6000 86.0% 78.0% 113.0% 107.0% 93.0% 118.5% 73.0%
170 125% 6500 74.5% 68.5% 112.0% 113.0% 81.5% 111.5% 61.0%
7000 - - 106.0% 117.0% - 101.5% -
7500 - - 99.5% 114.0% - - -
8000 - - - 107.0% - - -
8500 - - - 88.0% - - -
Simple VEapproximation.
VE Examples
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Volumetric efficiency is affected mainly by a few separate
phenomena. Flow restriction in ports is proportional to the
square of latent flow capability, that means that Ve fromlatent pumping capability and flow restriction only, Vef can
be written Vef=(1-k0*(Displacement*RPM)^2)*100%
where k0 is a flow restriction constant that depends on
the general tuning of the cylinderhead and valvetrain.
Tuned intakes and exhausts affect cylinder filling by
supercharging cylinders by means of acoustic waves and
kinetic gas energy at a certain peak (tuned) RPM, it can
be written Vet=Vef*k1, where k1 varies by normal
distribution over max ~50% of the RPM range. Values
1.0...1.3 can be considered normal and somewhat
possible to achieve for skilled tuners. Adverse camshaft
effects, i.e. intake dilution from wide overlap, intakepulsations (spitback) from (too) late intake closing etc.
usually goes away at higher RPM, and decreases fairly
linear with RPM, lets call it Vea, values range from -
45...0%. Total Ve can be written Ve=Vet-Vea.
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isplac
Max.
RPM
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ment:
RPM:
steps:
RPM
4000
4500
5000
55006000
6500
7000
7500
8000
8500
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2474
8500
500
VE [%
####
####
####
########
####
####
####
####
####
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[cm ]
[RPM]
[RPM]
PR
1.00
1.00
1.00
1.001.00
1.00
1.00
1.00
1.00
1.00
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Comp
hC [%
####
####
####
########
####
####
####
####
####
urbo e
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Interc
hIC [%
####
####
####
########
####
####
####
####
####
ficienc
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t1 [C]
20
t2 [C]
20.0
20.0
20.0
20.020.0
20.0
20.0
20.0
20.0
20.0
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t3 [C]
20.0
20.0
20.0
20.020.0
20.0
20.0
20.0
20.0
20.0
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DR
1.00
1.00
1.00
1.001.00
1.00
1.00
1.00
1.00
1.00
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[m /s]
0.073
0.091
0.105
0.1210.140
0.158
0.178
0.186
0.186
0.188
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[m /mi
4.40
5.46
6.27
7.238.39
9.49
10.66
11.13
11.18
11.25
Q Ai
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[cfm]
156
193
222
255296
335
376
393
395
397
flow
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[lbs/mi
10.75
13.32
15.32
17.6620.48
23.17
26.03
27.18
27.31
27.47
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[HP]
117.4
145.5
167.3
192.8223.6
253.0
284.3
296.9
298.2
300.0
Po
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[kW]
86.4
107.1
123.2
141.9164.6
186.2
209.2
218.5
219.5
220.8
er
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[Nm]
206.3
227.2
235.2
246.4262.0
273.6
285.4
278.2
262.0
248.1
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[kpm]
21.03
23.16
23.98
25.1226.71
27.89
29.09
28.36
26.71
25.29
orque
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0
50
100
150
200
250
300350
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
HP/Nm
RPM
Power estimation
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Nominal power 300 [hp]
@ intake air temp. 20 [C] 68 [F]
Actual power 354.4 [hp]
@ operating int. air temp -25 [C] -13 [F]
Cylinders 4
Power/cyl. 88.6 [hp]
Fuel density 747.5 [kg/m3
]lbs/h to cm /min ratio 10.114
Duty cycle 80%
BSFC 0.52 [lbs/(hk*h)]
Min. injector size 57.6 [lbs/h] 582 [cm3/min]
Injector #1 size 582 [cm3/min] 57.6 [lbs/h]
Injector #2 size 0 [cm /min] 0.0 [lbs/h]
Old flow rate 516 [Any unit]
Old fuel pressure 2.80 [Any unit]New fuel pressure 3.60 [Any unit]
New flow rate 585 [Any unit]
New flow rate 582 [Any unit]
Old flow rate 516 [Any unit]
Old fuel pressure 2.80 [Any unit]
New fuel pressure 3.56 [Any unit]
Air pressure 101.325 [kPa] 14.6959 [PSI] 1.00000
Air density 1.4231 [kg/m3]
RAD 116.1%
Density info
Dont mess with the fields in gray, thats where youll find info!
Classic US style injector sizing
New flow rate from adjusted pressure
New pressure from flow requirement
Common inputs
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Fuel flow 340 [cm /min]
Fuel mass flow 33.6 [lbs/h]
Fuel mass flow 30.0 [lbs/h]
Fuel flow 303 [cm /min]
Air mass flow 0.0667 [kg/s]
Air flow 0.0469 [m /s] 99.3 [CFM]
Air/fuel ratio 11.5 -
Fuel mass flow 0.0058 [kg/s]
Total fuel mass flow 83.5 [kg/h]
Fuel flow 466 [cm /min]
Total fuel flow 112 [l/h]
Min. injector size 582 [cm /min] 57.5 [lbs/h]
Injector #1 size 582 [cm3/min] 57.5 [lbs/h]
Injector #2 size 0 [cm /min] 0.0 [lbs/h]
[Atm] 1.01325 [Bar] 29.9213 [in Hg] 760.00 [mm Hg]
A/F ratio based calculation
cm3/min to lbs/h
lbs/h to cm3/min
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Horsepower 300 [hp] Horsepower 300 [hp]
Weight 810 [kg] Weight 810 [kg]
Strip trap speed 208.41 [km/h] 0-100km/h 3.2 [s]Strip E.T. 10.56 [s]
60 foot time 1.44 [s]
Min. HP. Air density 1.205 [kg/m ]
Strip E.T. 10.00 [s] Cd 0.32
Weight 810 [kg] A 1.55 [m2]
Horsepower 353 [hp] V (speed) 310 [km/h]
Max. weight 86.1 [m/s]
Strip E.T. 10.00 [s] P (power) 190.8 [kW]
Horsepower 300 [hp] 259.4 [Hp]
Weight 689 [kg]
Dont mess with the fields in gray, thats where youll find info!
Aerodynamic resistance
Strip performance Acceleration
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Tire width 275 [mm] Final ratio: 5.38
Profile 50 Gear # Ratio
Rim diameter 15 [inches] 1 2.660
Diameter 656.0 [mm] 2 1.780
Circumferance 2060.9 [mm] 3 1.300
4 1.000
5 0.740
6 0.500
Transmission 1 2 3 4 5 6
4L30-E 4-spd Automatic 2.400 1.479 1.000 0.723 - -
4L30-E Optional 4-spd Automatic 2.860 1.620 1.000 0.723 - -
4L60-E 4-spd Automatic 3.059 1.625 1.000 0.696 - -
4L80-E 4-spd Automatic 2.482 1.482 1.000 0.750 - -Borg Warner Close Ratio T-5 2.950 1.940 1.340 1.000 0.630 -
Borg Warner Close Ratio T-5 2.950 1.940 1.340 1.000 0.800 -
Borg Warner T56 6-spd manual 3.360 2.070 1.350 1.000 0.800 0.620
Borg Warner T-56 M28 1993 3.360 2.070 1.350 1.000 0.800 0.620
Borg Warner T-56 M29 1993 2.970 2.070 1.430 1.000 0.800 0.620
Borg Warner T-56 MN6 1994-> 2.660 1.780 1.300 1.000 0.740 0.500
Getrag 240 "Small Getrag" 3.717 2.019 1.316 1.000 0.805 -
Getrag 262 3.855 2.203 1.402 1.000 - -
Getrag 262 CR 3.717 2.403 1.766 1.263 1.000 -
Getrag 264 3.510 2.080 1.350 1.000 0.810 -
Getrag 265 "Big Getrag" 3.822 2.200 1.398 1.000 0.813 -
Power Glide 2-spd Automatic 1.820 1.000 - - - -Power Glide 2-spd Automatic 1.760 1.000 - - - -
Richmond Gear (Doug Nash) 5-spd 3.270 2.140 1.570 1.230 1.000 -
TH-180C (3L30) 3-spd Automatic 2.400 1.479 1.000 - - -
TH-200-4R 4-spd Automatic 2.741 1.568 1.000 0.674 - -
TH-350 3-spd Automatic 2.510 1.520 1.000 - - -
TH-400 (3L80) 3-spd Automatic 2.482 1.842 1.000 - - -
TH-700-R4 (4L60) 4-spd Automatic 3.059 1.625 1.000 0.696 - -
ZF 6-spd manual 2.680 1.800 1.310 1.000 0.750 0.500
GEAR RATIO
Dont mess with the fields in gray, thats where youll find info!
Tire / wheel data Speed calcula
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Engage Upshift Engage Upshift
0 8500 0 73
5688 8500 73 110
6208 8500 110 150
6538 8500 150 195
6290 8500 195 264
5743 8500 264 391
Speed [km/h]RPM
ion