Comptech SC VS Vortech SC
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From: Lar"Ghetto"
Lets do this math...in terms of quarter mile performance! What is the fastest time anyone has in a s/ced S? Look at my sig to see a respectable 1/4 mile time & trap speed. The fact is nitrous makes for a much easier launch with almost no bog, a killer 60' time. The question becomes, can a s/ced S make up the distance it loses on the launch. The answer is....
it will be damn close! Probably a drivers race. Anyway, here is a breakdown of my timeslip so you can see where the differences are.
r/t-.534
60'-1.954
330'-5.614
1/8-8.583
mph-83.77
1000'-11.146
1/4-13.284
mph-106.45
it will be damn close! Probably a drivers race. Anyway, here is a breakdown of my timeslip so you can see where the differences are.
r/t-.534
60'-1.954
330'-5.614
1/8-8.583
mph-83.77
1000'-11.146
1/4-13.284
mph-106.45
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That was my brother, and he is going by what he's seen. I did leave a s/ced S in the dust when we raced. I believe that I was a better driver than he was! That may have been the difference. Anyhow, I think this turned out to be a very interesting thread. If anyone is in my area with a s/c and wants to race, I'm game!
Joined: Mar 2001
Posts: 37,305
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I'm really confused here. Who's "hygiene boy" and who's "ScottL" and who's talking when? Who has the nitrous and who's got the S/C'd car and who's seen what and who's done what?
My point was that seeings how the two cars are ultimately about in the same ball park for power and all else being equal, one car should not make the other look like it's "standing still" (not my words). But if you're going to add driver skill into it, then the original story means a whole lot LESS! A really good driver in slow car can out perform a really bad driver in a fast car. So what's the real point?
My point was that seeings how the two cars are ultimately about in the same ball park for power and all else being equal, one car should not make the other look like it's "standing still" (not my words). But if you're going to add driver skill into it, then the original story means a whole lot LESS! A really good driver in slow car can out perform a really bad driver in a fast car. So what's the real point?
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From: rio rancho
Seems like the S/C car would do better from the 1/8 mile to the finish. I haven't timed mine, but I think it will go from 83-106 mph in less than the almost 5 seconds it took yours. You didn't mention what track you posted your very best time from, and the temp outside, tires, fuel octane, etc., but it seems easily as fast as a S/C car by your reported times. I don't see any big ass kicking on the ave. S/C car by your #'s either. Pt
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From: You wish
Just throwing in my $0.03...
1. A 75 shot should produce about 75 whp on an S2000. Explaining why is another post, but if it isn't too much to ask, take my word on it :-). I haven't dyno'd any 75 shots on an S2000, but I have dyno'd a 50 shot and a couple of RSX's (same engine config) with 80-100 hp shots.
2. If we were to take YS's numbers as an example, look at the _percentage_ differentials between the SC'd car and the theoretical "75 shot" S2000.
At 6000 rpm, the nitrous car has a 30 hp advantage, or about 16% more power.
At 7000 rpm - 20 hp more, about 10%
At 8000 rpm (where YS's power curve catches up) - equal
At 8800 rpm - YS has a 20 hp advantage, about 8%.
Ignoring the launch advantages of nitrous (no high rpm launch, start squeezing at about 3000 rpm), what does this mean? In first gear, the nitrous car pulls a lot (about 6-8% more average thrust). In 2nd it pulls less (4% average thrust advantage). In 3rd, a little less (3% average thrust advantage). Finally, in 4th, they should be about even. In 5th and above the SC car should pull back. However, I'm also ignoring heatsoak issues, which are notorious on non-intercooled SC cars.
I suspect that the theoretical "75 shot" car would put about a half second on your typical SC'd car (base boost) in a 1/4 mile race with very similar trap speeds (equal drivers, yada yada, all that other crap that never holds true :-). On the roll, things would be a lot closer. If you go back to the 62.5 hp shot (at the wheels) things would probably be equal in 3rd with a little pull for the SC'd car in 4th.
All theoretical, of course :-)
UL
1. A 75 shot should produce about 75 whp on an S2000. Explaining why is another post, but if it isn't too much to ask, take my word on it :-). I haven't dyno'd any 75 shots on an S2000, but I have dyno'd a 50 shot and a couple of RSX's (same engine config) with 80-100 hp shots.
2. If we were to take YS's numbers as an example, look at the _percentage_ differentials between the SC'd car and the theoretical "75 shot" S2000.
At 6000 rpm, the nitrous car has a 30 hp advantage, or about 16% more power.
At 7000 rpm - 20 hp more, about 10%
At 8000 rpm (where YS's power curve catches up) - equal
At 8800 rpm - YS has a 20 hp advantage, about 8%.
Ignoring the launch advantages of nitrous (no high rpm launch, start squeezing at about 3000 rpm), what does this mean? In first gear, the nitrous car pulls a lot (about 6-8% more average thrust). In 2nd it pulls less (4% average thrust advantage). In 3rd, a little less (3% average thrust advantage). Finally, in 4th, they should be about even. In 5th and above the SC car should pull back. However, I'm also ignoring heatsoak issues, which are notorious on non-intercooled SC cars.
I suspect that the theoretical "75 shot" car would put about a half second on your typical SC'd car (base boost) in a 1/4 mile race with very similar trap speeds (equal drivers, yada yada, all that other crap that never holds true :-). On the roll, things would be a lot closer. If you go back to the 62.5 hp shot (at the wheels) things would probably be equal in 3rd with a little pull for the SC'd car in 4th.
All theoretical, of course :-)
UL