Dissapointed
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I played with this calculator a bit:
http://www.wallaceracing.com/8th-quarter.php
Your 1/4 Mile ET is 14.61 seconds computed from your vehicle 1/8th ET of 9.351 seconds.
Your 1/4 Mile MPH is 97.85 MPH computed from your vehicle 1/8th MPH of 78.91 MPH.
I am betting bogging KILLS compared to spinning on a 60'.
It's just most of my runs have been from a roll and I have NEVER lost to a C5, and I always put a car or two on the 05+ GT's (they are known to trap 102+ in 5-speed manual form), I even put 1-1.5 cars on an 08' from 60-95 with a clogged cat! (GM replaced it).
Well, I guess I need to just all but side-step it from 2-2500 once in my life (only done 1 real burnout in it, and that was to smear a copperhead that was slithering across the road) and see what she can do!
So, everyone agrees a 2.36 on a BOG would cost at LEAST 2mph?
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How? Just run the car and look under the hood at night? been there and done that, looks like the inside of a deserted mine-shaft on a clouded over night.
Because I blew my 10-bolt at 800rpm backing out of the driveway one day and have driven it like a ***** ever since if you want the honest truth. This thing is built like a Ming Vase for being a "sports car".
I played with this calculator a bit:
http://www.wallaceracing.com/8th-quarter.php
Your 1/4 Mile ET is 14.61 seconds computed from your vehicle 1/8th ET of 9.351 seconds.
Your 1/4 Mile MPH is 97.85 MPH computed from your vehicle 1/8th MPH of 78.91 MPH.
I am betting bogging KILLS compared to spinning on a 60'.
It's just most of my runs have been from a roll and I have NEVER lost to a C5, and I always put a car or two on the 05+ GT's (they are known to trap 102+ in 5-speed manual form), I even put 1-1.5 cars on an 08' from 60-95 with a clogged cat! (GM replaced it).
Well, I guess I need to just all but side-step it from 2-2500 once in my life (only done 1 real burnout in it, and that was to smear a copperhead that was slithering across the road) and see what she can do!
So, everyone agrees a 2.36 on a BOG would cost at LEAST 2mph?
I played with this calculator a bit:
http://www.wallaceracing.com/8th-quarter.php
Your 1/4 Mile ET is 14.61 seconds computed from your vehicle 1/8th ET of 9.351 seconds.
Your 1/4 Mile MPH is 97.85 MPH computed from your vehicle 1/8th MPH of 78.91 MPH.
I am betting bogging KILLS compared to spinning on a 60'.
It's just most of my runs have been from a roll and I have NEVER lost to a C5, and I always put a car or two on the 05+ GT's (they are known to trap 102+ in 5-speed manual form), I even put 1-1.5 cars on an 08' from 60-95 with a clogged cat! (GM replaced it).
Well, I guess I need to just all but side-step it from 2-2500 once in my life (only done 1 real burnout in it, and that was to smear a copperhead that was slithering across the road) and see what she can do!
So, everyone agrees a 2.36 on a BOG would cost at LEAST 2mph?
on that calculator. My best 1/8 is 8.6 @ 83 and it tells me that I SHOULD run 13.47 @ 102.9 when, in actuality, my best so far is 13.30 @ 105.6. Yes that bog will drop you 2 mph. Romp on it; 10 bolts are a dime-a-dozen, you can get another one at a junkyard. You can't get a good E.T. at a junkyard... Thread Starter
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I call on that calculator. My best 1/8 is 8.6 @ 83 and it tells me that I SHOULD run 13.47 @ 102.9 when, in actuality, my best so far is 13.30 @ 105.6. Yes that bog will drop you 2 mph. Romp on it; 10 bolts are a dime-a-dozen, you can get another one at a junkyard. You can't get a good E.T. at a junkyard...
on that calculator. My best 1/8 is 8.6 @ 83 and it tells me that I SHOULD run 13.47 @ 102.9 when, in actuality, my best so far is 13.30 @ 105.6. Yes that bog will drop you 2 mph. Romp on it; 10 bolts are a dime-a-dozen, you can get another one at a junkyard. You can't get a good E.T. at a junkyard...Then again, it was off for a few other vehicles I punched up.
Experience verified? Would make me feel better if someone did the SAME thing and got the same results.
I call on that calculator. My best 1/8 is 8.6 @ 83 and it tells me that I SHOULD run 13.47 @ 102.9 when, in actuality, my best so far is 13.30 @ 105.6. Yes that bog will drop you 2 mph. Romp on it; 10 bolts are a dime-a-dozen, you can get another one at a junkyard. You can't get a good E.T. at a junkyard...
on that calculator. My best 1/8 is 8.6 @ 83 and it tells me that I SHOULD run 13.47 @ 102.9 when, in actuality, my best so far is 13.30 @ 105.6. Yes that bog will drop you 2 mph. Romp on it; 10 bolts are a dime-a-dozen, you can get another one at a junkyard. You can't get a good E.T. at a junkyard...Its off by a .1 and 1 mph on my slip.
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Yeah, I was slipping the clutch pretty good from 1500 rpm. Completely weak launch. That and granny-shifting is what I think cost me the 2-3mph, no?
The tires did hook awesome, on the 1-2 shift I only got a little squeek from them (TC was off, yes, I did do that right!).
Ok, if the MPH is your main concern, i will say this, when i netted a 2.23 60ft. & a slight bog, i went 13.97 @ 101.04, then i backed it up with a 2.17 60ft. & it went 13.79 @ 100.78, SO, you may not gain any more MPH with a better 60ft. unless you spun bad, but just a quick bog/hook & go, you shoud still retain the MPH, sounds to me that you shifted really early & must of taking too much time between shifts, this will loose MPH & of coarse ET also, just keep practiceing on your take offs & shifts, you don't need to go crazy on your launches to get the 60ft. down, so the rearend should servive, i left with my tach at 18-2000 & let the clutch out softly (but firm), then i let it out all the way & let it rip, my only issue i'm having is the 2nd. too 3rd. shift, i sometimes miss it, but i'm getting better.
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Ok, if the MPH is your main concern, i will say this, when i netted a 2.23 60ft. & a slight bog, i went 13.97 @ 101.04, then i backed it up with a 2.17 60ft. & it went 13.79 @ 100.78, SO, you may not gain any more MPH with a better 60ft. unless you spun bad, but just a quick bog/hook & go, you shoud still retain the MPH, sounds to me that you shifted really early & must of taking too much time between shifts, this will loose MPH & of coarse ET also, just keep practiceing on your take offs & shifts, you don't need to go crazy on your launches to get the 60ft. down, so the rearend should servive, i left with my tach at 18-2000 & let the clutch out softly (but firm), then i let it out all the way & let it rip, my only issue i'm having is the 2nd. too 3rd. shift, i sometimes miss it, but i'm getting better.
My question is this. I bounced off the rev limiter right before passing the score-sign. At what rpm should I shift into 4th to avoid this but not compromise my performance?
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If 102-103 is all it is good for is that weak for a WS6 6-speed? I weighed it and it was 3640# with a 3/4 tank of gas, so my 102.28 was at a 3820 race-weight. THe horsepower calculators say I needed 319rwhp to hit a 102.28 trap at 3820#. Is this accurate, or just fanciful thinking?
Wouldn't 3500rpm be an instant sacrifice to the 10-bolt gods? I am scared of it, I blew it once just backing out of the driveway with the clutch half out at 800rpm.
Wouldn't 3500rpm be an instant sacrifice to the 10-bolt gods? I am scared of it, I blew it once just backing out of the driveway with the clutch half out at 800rpm.
Not necessarily a 10 bolt sacrafice. I raced a long time on the same 10 bolt with 4.10's doing 5500 drops. It wan't until I started spraying that I started killing 10 bolts, It's different for every car though. The point is that IMO a little spin is 100% better than a bog.
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Not necessarily a 10 bolt sacrafice. I raced a long time on the same 10 bolt with 4.10's doing 5500 drops. It wan't until I started spraying that I started killing 10 bolts, It's different for every car though. The point is that IMO a little spin is 100% better than a bog.
Basically 2500rpm and then let the clutch out just slow enough to say I didn't drop it?
What rpm should I shift into 4th to avoid hitting the rev-limiter going through the traps?
I noticed on the street that if I BARELY spin I wheel-hop, but If I get mean with it it will spin without hopping. Do I need to focus on doing more than just squeeking them at the track (That usually results in the dreaded hop) and go for an all-out Scrrrrrrrrrrreeeeeppppppppppppp sounding take-off?
Basically 2500rpm and then let the clutch out just slow enough to say I didn't drop it?
What rpm should I shift into 4th to avoid hitting the rev-limiter going through the traps?
Basically 2500rpm and then let the clutch out just slow enough to say I didn't drop it?
What rpm should I shift into 4th to avoid hitting the rev-limiter going through the traps?
Last weekend running on 89 Octane i was still getting 105~106mph traps (don't ask)...
My method isn't perfect but it's been working... 2200rpm and slipping the clutch out quickly.
Everything else I've tried has just embarassed me in front of everyone at the track...(2.6 ~ 3.3 60fts suck)
All you need is practise, stop granny shifting & find the sweet spot at the starting line, Yes mine had wheel hop too (that will KILL the 10 bolt), so you need to be careful there, but in all, most of my hop was doing a rolled burn out from the water box, if you can go around the water box do it & just pull up to the line, i'm sure your slower MPH was do to your shifting, i shift mine at 55-5600 now, going any higher doesn't seem to do anything. your 23 mph gain in the last 660" is great (i only get 20), so your loosing it in the first 660" somewhere, its very possible your spinning between shifts & don't know it, just keep practiseing
Did you say your at the limiter in 4th going through the traps? Is this with a 3.42 gear?
Did you say your at the limiter in 4th going through the traps? Is this with a 3.42 gear?
No, the man would like to know when to shift into 4th because he rev limits in 3rd. Unfortunately I don't have an answer lol!! But I can say that you just need to take your car out and practice launching and dumping the clutch and find your RPM's!!! It's the only way to improve.
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All you need is practise, stop granny shifting & find the sweet spot at the starting line, Yes mine had wheel hop too (that will KILL the 10 bolt), so you need to be careful there, but in all, most of my hop was doing a rolled burn out from the water box, if you can go around the water box do it & just pull up to the line, i'm sure your slower MPH was do to your shifting, i shift mine at 55-5600 now, going any higher doesn't seem to do anything. your 23 mph gain in the last 660" is great (i only get 20), so your loosing it in the first 660" somewhere, its very possible your spinning between shifts & don't know it, just keep practiseing
Did you say your at the limiter in 4th going through the traps? Is this with a 3.42 gear?
Did you say your at the limiter in 4th going through the traps? Is this with a 3.42 gear?
Yes, the car on the street has killed Z4M's, tied with every C5 I have run, and puts 1.5+ car per 30mph of acceleration or so on the 05+ GT's (from 60-90 is 1.5+ cars on them and so on). From a roll it feels STRONG!
Yes, I shift slow. When on the street a shift will cost me about 5-8 feet every time a shift is performed. Is this slow enough to kill mph?
I think without my lame driving the car would trap 105 easy.
Last edited by N/Apower; May 15, 2008 at 11:43 AM.
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No, the man would like to know when to shift into 4th because he rev limits in 3rd. Unfortunately I don't have an answer lol!! But I can say that you just need to take your car out and practice launching and dumping the clutch and find your RPM's!!! It's the only way to improve.