View Full Version : I'm getting slowwwerrrrrr...
Juice
07-08-2012, 07:00 PM
Took the MM to the strip for the second time, only did two runs, but the best I could muster was 14.01 @ 98. The first time I went to the track I did a 13.50 @ 107, and that was with zero traction.
I didn't take the headlight out this time, and it was about 15 degrees hotter than when I ran the first time, but still not hot by any means (high was 77). Could those things really make that much of a difference, or should I start looking elsewhere?
sailsmen
07-08-2012, 07:14 PM
Weather, Temp/Humid, can add .75 to your best time.
tallpaul
07-08-2012, 07:47 PM
Took the MM to the strip for the second time, only did two runs, but the best I could muster was 14.01 @ 98. The first time I went to the track I did a 13.50 @ 107, and that was with zero traction.
I didn't take the headlight out this time, and it was about 15 degrees hotter than when I ran the first time, but still not hot by any means (high was 77). Could those things really make that much of a difference, or should I start looking elsewhere?
Just curious, bit what kind of setup do you have? Engine, trans and gear wise.
03sport007
07-08-2012, 07:51 PM
Did you get your fuel issue straighten out?
Juice
07-08-2012, 08:04 PM
Just curious, bit what kind of setup do you have? Engine, trans and gear wise.
Stock motor + Trilogy, shift kit on stock trans, stock gears.
Did you get your fuel issue straighten out?
I replaced the fuel filter, which was very restricted and the car hasn't missed since, so I'd like to think that was what the issue was.
dohc324ci
07-08-2012, 08:07 PM
Stock motor + Trilogy, shift kit on stock trans, stock gears.
What did your setup put down on the dyno? temp? tires?
I am looking to run this year just curious as I am shooting for 13.5 NA BBS.
Juice
07-08-2012, 08:13 PM
What did your setup put down on the dyno? temp? tires?
I am looking to run this year just curious as I am shooting for 13.5 NA BBS.
Temp for the 13.50 run was high 50s, the 14.01 run was 77. Car has never been dyno'd but it should be similar numbers to any other stock MM with a Trilogy. Street tires (Nitto NT850 to be exact).
robertmee
07-08-2012, 08:24 PM
Seems a bit slow for a Trilogy S/C....I would expect you to be low 13's with a variance to mid/high 13's if you're putting out 400+ RWHP as most trilogies should be. I'm hoping to break high 12's in mine with 463 RWHP.
justbob
07-08-2012, 08:57 PM
On the Trilogy tune, and Jmod only I pulled consistant 12.8's to 13.3's weather dependant. It was not dynoed but I would assume 380ish.
With an aggressive tune thrown at it and a 90MM MAF and MAFia together with a CAI it dropped to 12.3's at 445 RWHP.
I have long since added LT's and an X pipe without cats but never tuned and it spun up to 466 RWHP but had a LOUSY day at the track and IIRC high 80's temps she only mustered a 12.9?? (Bad tensioner losing 2 pounds of boost) Sorry, don't wanna remember the exact number LOL
I have recently added a 31 set up with 4.30's and plan to head back out in the fall to see where its at now.
Sent from my Ally while ruling the world from my toilet.
hotford
07-08-2012, 09:03 PM
Yes weather like we have had will kill E.T, this past weekend we took my bros cobra to the track,it ran 10.89 last year, yesterday in the humid figgin heat 11.20 was the best,car felt flat after the 1/8.
Comin' in Hot
07-08-2012, 09:20 PM
I ran a 14 flat a couple weeks ago with my trilogy and stock gears. Temp was in the upper 70s/ low 80s.... I thought it would have been faster
03sport007
07-08-2012, 10:50 PM
:bandit:X
Stock motor + Trilogy, shift kit on stock trans, stock gears.
I replaced the fuel filter, which was very restricted and the car hasn't missed since, so I'd like to think that was what the issue was.
I'm glad it was relatively simple.
sailsmen
07-09-2012, 07:09 AM
Post all the numbers from the runs and we can give you specific feed back.
cj7chris
07-09-2012, 07:37 AM
I am curious to see the feedback.
I plan on taking my car to the track this Friday for the first time to see what I run. North Texas in July won't yield good track temps (expect air temps between 95 and 100 degrees at 7:30 pm), but still curious to see how I do.
I did talk to Jamesstang79 this weekend in Waco, and he said that letting the car cool down between runs was pretty important. He recommended:
-letting the car sit for at least 45 minutes after arriving to let the engine and trans cool down
-sweet spot for his car is just above the lower hash by the 'C'
-OD off
-let the tranny shift itself
-Rev to about 1000 to 1200 rpms (NA) to launch
justbob
07-09-2012, 07:56 AM
One more thing I noticed about my set up is leaving off idle shaved .3 seconds. I had always tached up to 1000-1400 and it never felt right. Off idle with drag radials is nothing short of an amusement ride.
Sent from my Ally while ruling the world from my toilet.
RacerX
07-09-2012, 08:20 AM
Turn your key on, but, don't start the engine. See if you can hear your intercooler pump running.
SNOOT
07-09-2012, 08:26 AM
13.25 all day... :flamer:
https://lh4.googleusercontent.com/-5ZDeMQVB9gc/TlZ0ytt9Q3I/AAAAAAAAEUE/03rUOszfHOM/s1148/IMAG0680.jpg
sailsmen
07-09-2012, 08:35 AM
I always run my vehicle at the track at full operating temp. Anything other than that is asking for problems.
I have over 250 runs in the Marauder including a number of 11.5's.
LANDY
07-09-2012, 09:14 AM
Turn your key on, but, don't start the engine. See if you can hear your intercooler pump running. at These outside temps our stock bottom end won't hold 14sec of pump not cooling the charge temps.
To OP what's your elevation?
RacerX
07-09-2012, 09:49 AM
at These outside temps our stock bottom end won't hold 14sec of pump not cooling the charge temps.
To OP what's your elevation?
Then you've never datalogged how much timing gets pulled when exactly this scenario happens. I have and you'd be very suprised. ;)
AND... Your computer automatically starts adding more fuel to cool things off. Your Lamda will be LOWER than anything you command. I have proof if you need it.
LANDY
07-09-2012, 10:17 AM
Then you've never datalogged how much timing gets pulled when exactly this scenario happens. I have and you'd be very suprised. ;)
AND... Your computer automatically starts adding more fuel to cool things off. Your Lamda will be LOWER than anything you command. I have proof if you need it.
I know that is all in the tune, and i also know any good tuner would pull timing and add fuel at over 150* charge temp. But I don't know who tuned it therefore I don't trust it
RacerX
07-09-2012, 10:21 AM
That's done by Ford from the factory. The tune is completely my own creation and I never told it to do that. This is also why having that IAT sensor in the proper location for boosted applications is soooooo important. This is also why I think the OP should at least take ten seconds to check it. Fuse or relay could have gone on the pump.
boatmangc
07-09-2012, 10:35 AM
Intercooler pump and IAT in the wrong position is exactly why my original motor failed.
I know Billy, you warned me.......
03mmmonroe
07-09-2012, 11:42 AM
Took the MM to the strip for the second time, only did two runs, but the best I could muster was 14.01 @ 98. The first time I went to the track I did a 13.50 @ 107, and that was with zero traction.
I didn't take the headlight out this time, and it was about 15 degrees hotter than when I ran the first time, but still not hot by any means (high was 77). Could those things really make that much of a difference, or should I start looking elsewhere?
I have been to the track last two Fridays and made 40 runs total and air temp were 104-95 deg. Car ran 14.75 NA but I am having my PI convector restalled witch will help my 60 foot. If my coolant temp is at 170 -180 deg best time and 60 foot noted. Hot lapping the car temp is 204 ECT, Trans temp 165, intake air temp 125 deg and my air fuel at the end of the run is at 12.9-13.1. I think I have over 65 ¼ mile runs already this year. I have been averaging around 100-125 runs per year since 2009. Have Fun at the track.
Russ
Juice
07-09-2012, 02:12 PM
at These outside temps our stock bottom end won't hold 14sec of pump not cooling the charge temps.
To OP what's your elevation?
Elevation is very near sea level. The IC pump is working.
Here are the times:
1st 2nd
60' 2.235 2.158
330 6.026 5.950
1/8 9.149 9.086
MPH 78.04 77.72
1000 11.833 11.788
1/4 14.110 14.069
MPH 98.71 98.76
sailsmen
07-09-2012, 02:15 PM
Elevation is very near sea level. The IC pump is working.
Here are the times:
1st 2nd
60' 2.235 2.158
330 6.026 5.950
1/8 9.149 9.086
MPH 78.04 77.72
1000 11.833 11.788
1/4 14.110 14.069
MPH 98.71 98.76
Where is the "fast" time data? Please list all your mods.
Marauderman
07-09-2012, 02:19 PM
I have been to the track last two Fridays and made 40 runs total and air temp were 104-95 deg. Car ran 14.75 NA but I am having my PI convector restalled witch will help my 60 foot. If my coolant temp is at 170 -180 deg best time and 60 foot noted. Hot lapping the car temp is 204 ECT, Trans temp 165, intake air temp 125 deg and my air fuel at the end of the run is at 12.9-13.1. I think I have over 65 ¼ mile runs already this year. I have been averaging around 100-125 runs per year since 2009. Have Fun at the track.
Russ
Hey Russ--don't recall--do you have the rear cooling kit?--because on last Friday, while driving slowly around the home area to the store and back, my scan gauge reported heat temp as : 125 IA Temp @ 224 WT @ 41 MPH @ 2070 RPM----that's why I ask-----cause I do not--thinking I need to do!!!!
RacerX
07-09-2012, 02:20 PM
Hmmmm... Start the engine, watch the boost bypas valve (it should be open at idle) blip the throttle to allow enough air for a quick shot into boost and watch that bypass valve. It should go from open to close with the throttle.
Juice
07-09-2012, 02:24 PM
Where is the "fast" time data? Please list all your mods.
http://img.photobucket.com/albums/v624/JonesSoda/maruader/4D4C0129.jpg
Trilogy, TansGo shift kit, K&N
Hmmmm... Start the engine, watch the boost bypas valve (it should be open at idle) blip the throttle to allow enough air for a quick shot into boost and watch that bypass valve. It should go from open to close with the throttle.
I'll take a look, thanks. My Trilogy install is pretty new, so I would hope everything related to that is in good working order.
justbob
07-09-2012, 02:51 PM
Did you have wheel spin? The 60' time you listed is terrible. You should be at minimum 2.0
Sent from my Ally while ruling the world from my toilet.
Bradley G
07-09-2012, 03:10 PM
Your trap speed supports a better ET , you need your work getting off the line.
Get your 60' under 2.0 and you will be knockin' at 12's
cj7chris
07-09-2012, 05:27 PM
I think he said traction was hard to find on the set of fast runs.
Juice
07-09-2012, 07:20 PM
Your trap speed supports a better ET , you need your work getting off the line.
Get your 60' under 2.0 and you will be knockin' at 12's
I think he said traction was hard to find on the set of fast runs.
My launch definitely needs work, but for the faster runs it was cold out and they had just scr-aped (stupid censor) the track. Even people with slicks were having trouble hooking up.
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