1/4 mile times ( Gtech pro )
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 1,019
Likes: 1
From: Weymouth Dorset
1/4 mile times ( Gtech pro )
I ve been out with my Gtech tonight and done a few runs, just wanted to post the numbers to see what everyone thinks ......
1/4 ......12.18.@126.5 mph
RWHP ....365
Do thease numbers sound about right for the mods below
Thanks
Adrian
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1/4 ......12.18.@126.5 mph
RWHP ....365
Do thease numbers sound about right for the mods below
Thanks
Adrian
.
Burning Brakes
Joined: Mar 2005
Posts: 1,042
Likes: 0
well if you are doing 126mph,than you will have to have near 500hp in a 3300 pound car.G-techs usually read a few mph high.and I just have to say,according to your sig,having over 400hp with siamese runners in a N/A 350 is 
Melting Slicks
Joined: May 2001
Posts: 3,014
Likes: 18
From: Raleigh, NC
What year is the car? What tires, what launch technique?
The ET seem's really fast for the HP, and the MPH is insanely high. I had a G-tech and ran it at the track a couple times. The ET was about .2 fast, and it was 6 mph fast. I ran 2 G-techs at the same time once and came up with completely different results.
I wouldn't put too much stock in the time/mph being accurate, however I found that they are very consistent. If all you're using it for is a tool to gauge wether mods are helping or hurting, they're great. No real sunbstitute for the track though, IMO.
The ET seem's really fast for the HP, and the MPH is insanely high. I had a G-tech and ran it at the track a couple times. The ET was about .2 fast, and it was 6 mph fast. I ran 2 G-techs at the same time once and came up with completely different results.
I wouldn't put too much stock in the time/mph being accurate, however I found that they are very consistent. If all you're using it for is a tool to gauge wether mods are helping or hurting, they're great. No real sunbstitute for the track though, IMO.
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 1,019
Likes: 1
From: Weymouth Dorset
Originally Posted by neat
What year is the car? What tires, what launch technique?
The ET seem's really fast for the HP, and the MPH is insanely high. I had a G-tech and ran it at the track a couple times. The ET was about .2 fast, and it was 6 mph fast. I ran 2 G-techs at the same time once and came up with completely different results.
I wouldn't put too much stock in the time/mph being accurate, however I found that they are very consistent. If all you're using it for is a tool to gauge wether mods are helping or hurting, they're great. No real sunbstitute for the track though, IMO.
The ET seem's really fast for the HP, and the MPH is insanely high. I had a G-tech and ran it at the track a couple times. The ET was about .2 fast, and it was 6 mph fast. I ran 2 G-techs at the same time once and came up with completely different results.
I wouldn't put too much stock in the time/mph being accurate, however I found that they are very consistent. If all you're using it for is a tool to gauge wether mods are helping or hurting, they're great. No real sunbstitute for the track though, IMO.
The car is a 1990 L98 6 speed running Shell Optimax (98 octane ) tyres 275/40/17 , amb temp 65f launch tec = about 3500 rpm's and drop the clutch
Only using the Gtech as a rough guide to tuning mods, there arn't many strips here in the UK and the closest one is about 250 miles away
Just wanted to post the # to see if you guys think that she is running about right.
Thanks
Adrian
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Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 1,019
Likes: 1
From: Weymouth Dorset
Originally Posted by Zix
Adrian! I've been waiting to hear some news about your motor! 365 RWHP through a 350CI TPI is damn impressive! Now get that thing on a dyno and get some solid numbers! 
Just waiting for prom number 2 to arrive from Merle and hopefully that should sort out my BLM's , then I will be straight up to the dyno
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Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by adi4
Just waiting for prom number 2 to arrive from Merle and hopefully that should sort out my BLM's , then I will be straight up to the dyno
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Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 1,019
Likes: 1
From: Weymouth Dorset
Originally Posted by Zix
What's up with the BLM's? Are they split, or just to rich/lean?
They are about 100 at idle and slowly creap up to 128 at about 70% throttle and then stay at 128 all the way to WOT
,
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Melting Slicks
Joined: Mar 1999
Posts: 2,535
Likes: 2
From: Rochester NY
my opinon is that no way that combo can put out 365rwhp. And no way the car can trap 126mph in 1/4. The kind combo can trap that type speed is 383ci stroker motor with super ram setup or even a 406ci + motor to do that. Unless your are supercharged, but you are not.
Bruce
Bruce
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by Bruce
my opinon is that no way that combo can put out 365rwhp. And no way the car can trap 126mph in 1/4. The kind combo can trap that type speed is 383ci stroker motor with super ram setup or even a 406ci + motor to do that. Unless your are supercharged, but you are not.
Bruce
Bruce
EDIT: I agree about the trap speed though, but it's a G-Tech and I don't know how accurate they are on traps, but I've heard they are pretty accurate on times
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Originally Posted by adi4
They are about 100 at idle and slowly creap up to 128 at about 70% throttle and then stay at 128 all the way to WOT
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you are way to rich and the 128's you are seeing above 70% throttle are probably just PE mode locking the BLM's in at 128, what arethe O2 readings?. You realy need this thing tuned before you keep driving it because you are just dumpimg way to much fuel and may cause engine problems in short order if not.
Le Mans Master
Joined: May 2000
Posts: 7,033
Likes: 12
Your car probably has around 300ish rwhp. It will probably run 110-112ish on a good day.
I personally like Gtechs when you compare the numbers against themselves when modding your car but I put no faith in them as a true indicator of what a car will do.
Around 5 years ago we tried to gtech our motorcycles. I had a FZR1000, one buddy had a FZR600 and the other guy has some POS Kawasaki 600.
The guy came back into the yard with his KOW and the Gtech was flashing some 9 sec # @ 145 mph. We had a pretty good laugh at that.
I personally like Gtechs when you compare the numbers against themselves when modding your car but I put no faith in them as a true indicator of what a car will do.
Around 5 years ago we tried to gtech our motorcycles. I had a FZR1000, one buddy had a FZR600 and the other guy has some POS Kawasaki 600.
The guy came back into the yard with his KOW and the Gtech was flashing some 9 sec # @ 145 mph. We had a pretty good laugh at that.
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by hippy
Your car probably has around 300ish rwhp. It will probably run 110-112ish on a good day.
I personally like Gtechs when you compare the numbers against themselves when modding your car but I put no faith in them as a true indicator of what a car will do.
Around 5 years ago we tried to gtech our motorcycles. I had a FZR1000, one buddy had a FZR600 and the other guy has some POS Kawasaki 600.
The guy came back into the yard with his KOW and the Gtech was flashing some 9 sec # @ 145 mph. We had a pretty good laugh at that.
I personally like Gtechs when you compare the numbers against themselves when modding your car but I put no faith in them as a true indicator of what a car will do.
Around 5 years ago we tried to gtech our motorcycles. I had a FZR1000, one buddy had a FZR600 and the other guy has some POS Kawasaki 600.
The guy came back into the yard with his KOW and the Gtech was flashing some 9 sec # @ 145 mph. We had a pretty good laugh at that.
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by hippy
Really? You mean that 600 Kawa wasn't running 145???? 
They are fairly accurate on cars, from what I have been told in terms of E.T's, but not so much with the MPH.They don't work on bikes because they need to be kept level and it calculates the time and MPH based on the angle and speed it was tilted off center...a bike has much more drastic movement than a car does on acceleration.
Drifting
Joined: Jul 2001
Posts: 1,296
Likes: 0
From: Largo Florida
This was done with my previous car. As you can see the trap speed is different than the time slip. This G-Tech Pro is not the most current model. It is the one with the red LED display.
You must make sure the unit is straght and level. Also, if you are not running at the drag strip then you need to do 2 or 3 runs in one direction and 2 or 3 runs in the other. Then you average them out. You can just make one run and expect it to be an accurate reading.
Timeslip - 13.699 @ 104.94
G-Tech Pro - 13.63 @ 110.3
Timeslip - 13.746 @ 105.22
G-Tech Pro - 13.79 @ 110.5
Timeslip - 13.678 @ 104.89
G-Tech Pro - 13.68 @ 110.0
So take off 5-6mph on your trap to get a more accurate comparison.
You must make sure the unit is straght and level. Also, if you are not running at the drag strip then you need to do 2 or 3 run in one direction and 2 or 3 run in the other. Then you average them out. You can't just make one run and expect it to be an accurate reading.
You must make sure the unit is straght and level. Also, if you are not running at the drag strip then you need to do 2 or 3 runs in one direction and 2 or 3 runs in the other. Then you average them out. You can just make one run and expect it to be an accurate reading.
Timeslip - 13.699 @ 104.94
G-Tech Pro - 13.63 @ 110.3
Timeslip - 13.746 @ 105.22
G-Tech Pro - 13.79 @ 110.5
Timeslip - 13.678 @ 104.89
G-Tech Pro - 13.68 @ 110.0
So take off 5-6mph on your trap to get a more accurate comparison.
You must make sure the unit is straght and level. Also, if you are not running at the drag strip then you need to do 2 or 3 run in one direction and 2 or 3 run in the other. Then you average them out. You can't just make one run and expect it to be an accurate reading.
Last edited by ericcer; Jul 17, 2005 at 08:12 AM.
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 1,019
Likes: 1
From: Weymouth Dorset
Originally Posted by ericcer
This was done with my previous car. As you can see the trap speed is different than the time slip. This G-Tech Pro is not the most current model. It is the one with the red LED display.
Timeslip - 13.699 @ 104.94
G-Tech Pro - 13.63 @ 110.3
Timeslip - 13.746 @ 105.22
G-Tech Pro - 13.79 @ 110.5
Timeslip - 13.678 @ 104.89
G-Tech Pro - 13.68 @ 110.0
So take off 5-6mph on your trap to get a more accurate comparison.
Timeslip - 13.699 @ 104.94
G-Tech Pro - 13.63 @ 110.3
Timeslip - 13.746 @ 105.22
G-Tech Pro - 13.79 @ 110.5
Timeslip - 13.678 @ 104.89
G-Tech Pro - 13.68 @ 110.0
So take off 5-6mph on your trap to get a more accurate comparison.
So do you think 12.2 @ 118 mph ish could be a possible set of # for my setup
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Drifting
Joined: Jul 2001
Posts: 1,296
Likes: 0
From: Largo Florida
Originally Posted by adi4
So do you think 12.2 @ 118 mph ish could be a possible set of # for my setup
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You MPH sounds about right. I was getting 115mph with about 345rwhp. If you are a good driver it is possible to get 12.2. I am at sea level though.
Last edited by ericcer; Jul 17, 2005 at 08:08 AM.
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 1,019
Likes: 1
From: Weymouth Dorset
Originally Posted by ericcer
I just edited my posting. Did you do multiple runs like stated above and average them out?
You MPH sounds about right. I was getting 115mph with about 345rwhp. If you are a good driver it is possible to get 12.2. I am at sea level though.
You MPH sounds about right. I was getting 115mph with about 345rwhp. If you are a good driver it is possible to get 12.2. I am at sea level though.
Yes I did mutiple runs and I am also at sea level, also the temp outside was about 65f
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Drifting
Joined: Jun 2001
Posts: 1,997
Likes: 1
From: Lake Ozark MO
If memory serves, the G-Tech will always toss out higher final MPH numbers because it calculates the actual final speed.
The lights at the track average the final 60 feet. This would make the track average a bit slower.
Again... I'm not sure I'm exact. Perhaps some "track experts" will chime in.
The lights at the track average the final 60 feet. This would make the track average a bit slower.
Again... I'm not sure I'm exact. Perhaps some "track experts" will chime in.