what makes a car a "factory freak"?
what makes a car a "factory freak"?
been trying to figure this out for a while now..
why there are cars of the same model/year has different margins and different outputs from each others? why is it like 2 out of 20 cars dyno the same (same dyno, same day)? e.g. 2 x 2003 350z, 6MT, stock, 1 would dyno 250, the other is 240.
What's the cause?
is it the quality of the production?
the assembly?
what's the solution?
why there are cars of the same model/year has different margins and different outputs from each others? why is it like 2 out of 20 cars dyno the same (same dyno, same day)? e.g. 2 x 2003 350z, 6MT, stock, 1 would dyno 250, the other is 240.
What's the cause?
is it the quality of the production?
the assembly?
what's the solution?
Last edited by maXmood; Jan 1, 2011 at 11:17 PM.
I can't speak for everybody but, i am 1 mile in elevation obviously I won't have the whp as somebody at sea level (less o2 at higher elevations). I am sure there are other factors such as temp, humidity, type of dyno etc.
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What's the cause?
the quality of the production.
the assembly.
what's the solution?
none.
Everything has those variances; it's just part of life. I'd be more surprised to find two of the exact same dynos than two differing ones.
the quality of the production.
the assembly.
what's the solution?
none.
Everything has those variances; it's just part of life. I'd be more surprised to find two of the exact same dynos than two differing ones.
Last edited by drivessidewayz; Jan 2, 2011 at 10:20 AM.
Do you mean "If you build both blocks the exact same way, will the 250 dyno higher than the 240?"?
There is no answer for that because it could go either way. The 240 could dyno 30hp higher than the 250 after it's built. This is also why two cars with the exact same setup probably won't use the exact same tune.
There is no answer for that because it could go either way. The 240 could dyno 30hp higher than the 250 after it's built. This is also why two cars with the exact same setup probably won't use the exact same tune.
My friend had one of these. It was a 97 V6 Mustang. It would run 0.5 to 0.7 seconds faster in the 1/4 mile than other V6 Mustangs. And he was completely stock. It had 120,000 miles on it and would chirp 2nd and 3rd (auto trans). No one would believe him and there was some 20 page thread over his car and how he must have been a liar despite videos and time slips over and over again.
I told him to just leave it alone, don't mess with it at all it's perfect. He ended up putting a shift kit on it which blew the trans and then from there the car went down hill. He sold it for nearly nothing and bought a 240 with SR20 which overheated and seized within a week, lol.
I told him to just leave it alone, don't mess with it at all it's perfect. He ended up putting a shift kit on it which blew the trans and then from there the car went down hill. He sold it for nearly nothing and bought a 240 with SR20 which overheated and seized within a week, lol.
My friend had one of these. It was a 97 V6 Mustang. It would run 0.5 to 0.7 seconds faster in the 1/4 mile than other V6 Mustangs. And he was completely stock. It had 120,000 miles on it and would chirp 2nd and 3rd (auto trans). No one would believe him and there was some 20 page thread over his car and how he must have been a liar despite videos and time slips over and over again.
I told him to just leave it alone, don't mess with it at all it's perfect. He ended up putting a shift kit on it which blew the trans and then from there the car went down hill. He sold it for nearly nothing and bought a 240 with SR20 which overheated and seized within a week, lol.
I told him to just leave it alone, don't mess with it at all it's perfect. He ended up putting a shift kit on it which blew the trans and then from there the car went down hill. He sold it for nearly nothing and bought a 240 with SR20 which overheated and seized within a week, lol.
There's a big debate on how to properly break in engines. There are a couple threads started about it on these forums too. I don't know the website off the top of my head, but they claim that beating on an engine to break it in produces more horsepower than the dealer's approach of babying it.
I really believe the variation regarding "factory freaks" is quite small.
When you consider that air temp and altitude changes can make a 10% or larger difference in power, you can see how some comparisons that were not equal could make one engine seem much better than the next. In drag racing you get into all sorts of driver variables, track conditions, tire quality, suspension, so it's hard to compare 10-20hp that way as well.
Also, ECU tuning changes all the time. There are tons of different roms from Nissan, so some may be tuned more aggressively than others. I believe this is why we see some Zs/Gs respond so well to bolt-ons and a flash, and some to not gain as much.
My guess is the power difference is rarely if ever greater than 5hp/lb-ft over the rpm range. Simply running different oils through the drive train can net that much difference easily!
When you consider that air temp and altitude changes can make a 10% or larger difference in power, you can see how some comparisons that were not equal could make one engine seem much better than the next. In drag racing you get into all sorts of driver variables, track conditions, tire quality, suspension, so it's hard to compare 10-20hp that way as well.
Also, ECU tuning changes all the time. There are tons of different roms from Nissan, so some may be tuned more aggressively than others. I believe this is why we see some Zs/Gs respond so well to bolt-ons and a flash, and some to not gain as much.
My guess is the power difference is rarely if ever greater than 5hp/lb-ft over the rpm range. Simply running different oils through the drive train can net that much difference easily!