1/4 Mile Run at Bandimere (Colorado)
08-22-2011, 04:33 PM
#61
Nordschleife Master
I know a lot of it had to do with the new LED bulbs. They come on instantly, where the older incandescent bulbs took a half a second to heat up the filament. But, I thought I had read somewhere that the NHRA mandated an incandescent bulb for the green, to maintain the .4 R/T for their races. Like I said though, its been a long time since I paid close attention.
It all looks hella fun anyway.
08-22-2011, 04:38 PM
#62
Race Car
08-22-2011, 05:17 PM
#64
Nordschleife Master
08-22-2011, 05:22 PM
#65
Race Car
Now they no longer use the .500 so a perfect light is .000
It still takes the same time they just don't reference it the same so if you were to compare to the old way you have to add the .500 back in on top of you're reaction to green
08-22-2011, 05:52 PM
#66
Nordschleife Master
They used to factor the time between bulbs at .500 so a perfect light was .500
Now they no longer use the .500 so a perfect light is .000
It still takes the same time they just don't reference it the same so if you were to compare to the old way you have to add the .500 back in on top of you're reaction to green
Now they no longer use the .500 so a perfect light is .000
It still takes the same time they just don't reference it the same so if you were to compare to the old way you have to add the .500 back in on top of you're reaction to green
I knew that..... I thought your RT was .313, so I was confused how you got to .870. If I could read, I wouldn't have this problem
08-22-2011, 08:40 PM
#67
Burning Brakes
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I think it effected it more than is shown. Josh was running much higher boost than your runs (20+ psi) and mine spiked to over 20 and then came back down. I was running close to the minimum boost my wg would allow. I have pretty stiff springs in there so it always wants to be over that pressure. It works fine if I'm over my spring rate but under it has a harder time.
Personally I would use josh's car as a comparison moreso than mine. So if you look at that he needed quite a bit more pressure to come close to your trap speed.
That is what sucks up here, you have to run high boost and a bigger turbo as well.
Edit; also, and this is HUGE.... Both Josh and I were using anti lag with our cars. I have ran mine without it before and it is extremely hard to get a good et and because boost is so laggy the MPH is effected. From what I have seen the cars would have ran around low to mid 14's at 104 ish mph.
Personally I would use josh's car as a comparison moreso than mine. So if you look at that he needed quite a bit more pressure to come close to your trap speed.
That is what sucks up here, you have to run high boost and a bigger turbo as well.
Edit; also, and this is HUGE.... Both Josh and I were using anti lag with our cars. I have ran mine without it before and it is extremely hard to get a good et and because boost is so laggy the MPH is effected. From what I have seen the cars would have ran around low to mid 14's at 104 ish mph.
Without anti lag it would have really been that bad? You two should run your cars at a lower altitude and see how the results differ from these results.
08-22-2011, 09:15 PM
#69
Rennlist Member
Yeah, me too...
As a note on altitude affecting an NA car, I drove my Supra to Santa Fe (7000ft) last summer to visit my dad, and oh, sweet zombie jesus was it a dog... I mean, it's not what I would call "fast" here (at sea-level), but it's not slow either... I'd say it's pretty comparable to an NA 944 in terms of acceleration and power:weight... but there... ugh! We took a trip to Albuquerque and on the way back, I had to shift into 3rd (at 70mph on I-25) to drive up La Bajada Hill. Big difference! I've been considering getting out of WA for a while now, but since then, altitude has been a major factor when considering alternative locations!
I need to figure out what altitude is the cut-off, so to speak... Like, Salt Lake is at ~4000ft and the car was pretty much fine there, I mean, not as good as it is here, but I could still pass trucks on the highway.
As a note on altitude affecting an NA car, I drove my Supra to Santa Fe (7000ft) last summer to visit my dad, and oh, sweet zombie jesus was it a dog... I mean, it's not what I would call "fast" here (at sea-level), but it's not slow either... I'd say it's pretty comparable to an NA 944 in terms of acceleration and power:weight... but there... ugh! We took a trip to Albuquerque and on the way back, I had to shift into 3rd (at 70mph on I-25) to drive up La Bajada Hill. Big difference! I've been considering getting out of WA for a while now, but since then, altitude has been a major factor when considering alternative locations!
I need to figure out what altitude is the cut-off, so to speak... Like, Salt Lake is at ~4000ft and the car was pretty much fine there, I mean, not as good as it is here, but I could still pass trucks on the highway.
08-22-2011, 09:36 PM
#70
Three Wheelin'
Yeah, me too...
As a note on altitude affecting an NA car, I drove my Supra to Santa Fe (7000ft) last summer to visit my dad, and oh, sweet zombie jesus was it a dog... I mean, it's not what I would call "fast" here (at sea-level), but it's not slow either... I'd say it's pretty comparable to an NA 944 in terms of acceleration and power:weight... but there... ugh! We took a trip to Albuquerque and on the way back, I had to shift into 3rd (at 70mph on I-25) to drive up La Bajada Hill. Big difference! I've been considering getting out of WA for a while now, but since then, altitude has been a major factor when considering alternative locations!
I need to figure out what altitude is the cut-off, so to speak... Like, Salt Lake is at ~4000ft and the car was pretty much fine there, I mean, not as good as it is here, but I could still pass trucks on the highway.
As a note on altitude affecting an NA car, I drove my Supra to Santa Fe (7000ft) last summer to visit my dad, and oh, sweet zombie jesus was it a dog... I mean, it's not what I would call "fast" here (at sea-level), but it's not slow either... I'd say it's pretty comparable to an NA 944 in terms of acceleration and power:weight... but there... ugh! We took a trip to Albuquerque and on the way back, I had to shift into 3rd (at 70mph on I-25) to drive up La Bajada Hill. Big difference! I've been considering getting out of WA for a while now, but since then, altitude has been a major factor when considering alternative locations!
I need to figure out what altitude is the cut-off, so to speak... Like, Salt Lake is at ~4000ft and the car was pretty much fine there, I mean, not as good as it is here, but I could still pass trucks on the highway.
I live about 6 miles from Hwy 341 where they run the open road races, 4300 ft t0about 6700 I think? I took the 951 for a run up there one rainy day. I was'nt going crazy fast but I was noticing the back end spinning a bit so I dialed it back some more.
Then I took the Tercel stock 3ee up there, yeah that was painful, it's actually a big hp road. Tercel was not happy! But yeah if you have a lot of NA power and FI you can cope with steep grades. If you have little NA power and FI...good luck!
Uhh not really sure what my point was!
08-22-2011, 09:52 PM
#71
Rennlist Member
Is the Supra carbed or FI? FI cars are suppose to have a Baro sensor I believe? So it shouldn't be that bad? My 951 seems to be pretty fierce at 4300 but it get's faster at sea level. My little 77 fwhp Tercel is pretty good up here also but it does better at sea level also.
I live about 6 miles from Hwy 341 where they run the open road races, 4300 ft t0about 6700 I think? I took the 951 for a run up there one rainy day. I was'nt going crazy fast but I was noticing the back end spinning a bit so I dialed it back some more.
Then I took the Tercel stock 3ee up there, yeah that was painful, it's actually a big hp road. Tercel was not happy! But yeah if you have a lot of NA power and FI you can cope with steep grades. If you have little NA power and FI...good luck!
Uhh not really sure what my point was!
I live about 6 miles from Hwy 341 where they run the open road races, 4300 ft t0about 6700 I think? I took the 951 for a run up there one rainy day. I was'nt going crazy fast but I was noticing the back end spinning a bit so I dialed it back some more.
Then I took the Tercel stock 3ee up there, yeah that was painful, it's actually a big hp road. Tercel was not happy! But yeah if you have a lot of NA power and FI you can cope with steep grades. If you have little NA power and FI...good luck!
Uhh not really sure what my point was!
08-22-2011, 11:53 PM
#72
Three Wheelin'
Oh yeah long vertical grades are killers! To get out of Dayton and into Carson City proper there is a half mile long grade that goes straight up so 4300 to 5000 ft. If you hit it in 4th gear and try and hold 55. it will saturate the meter before you get to the top, you floor it more and you get nothing!
Now the 951! Yeah it doesn't care but you can balance the boost gauge between positive and negative pressure, that is you can hold it to zero on a digital gauge. But if you nail it at the bottom of the hill you'll be in triple digits at the top!
Oh the Supra 160hp... fortunately it only weights about 2000 lbs like my Tercel so it must be OK!
Now the 951! Yeah it doesn't care but you can balance the boost gauge between positive and negative pressure, that is you can hold it to zero on a digital gauge. But if you nail it at the bottom of the hill you'll be in triple digits at the top!
Oh the Supra 160hp... fortunately it only weights about 2000 lbs like my Tercel so it must be OK!
08-23-2011, 12:05 AM
#73
Rennlist Member
08-23-2011, 12:10 AM
#74
Three Wheelin'
Aww so it is like a 944 na! Well a 2jz could fix it! But I guess we don't need another how do I turbo my NA thread...buy a Turbo...but that is how I fixed my 944 NA!
08-23-2011, 12:16 AM
#75
Rennlist Member