| From | Message |
Rod
Dodge Dakota
JOIN HERE
2/26/2003
21:09:44
|
 Subject: Why am I slow?
IP: Logged
Message:
I have a 5.2 Regular Cab Dakota Sport with the 3.90's
and a 5 speed. I have BF Goodrich Radial T/A's 275/60/
15's, a homemade intake, and no mufflers. My best time
was a 15.65. Why am I running so slow (in my opinion I
should be faster). I am running in FL so maybe the
humidity or something? Any help is appreciated.
|
big_torque
Dodge Dakota
JOIN HERE
2/26/2003
21:52:27
| RE: Why am I slow?
IP: Logged
Message:
What is your mph ?
Whats the 60` time ?
you should be a little faster. not much though. maybe 15.2s
you prolly got about 200 hp going to the wheels. Punch that in on a HP/ET calculator
|
slow2dak
Dodge Dakota
JOIN HERE
2/26/2003
22:00:45
|  RE: Why am I slow?
IP: Logged
Message:
first things first, what do you RPM's do you launch at? what do you shift at? what is your trap speed and 60'? how about trap speed RPM's? do you spin out of the hole or bog down? put some mufflers on tha dak unless you have the other pieces of the combination do run without a full exhaust. id have to say one of the most obvious things is your tires are too tall. try a 26" tire. do you have a timeslip you could email me? upshizblood@hotmail.com
02 4.7 RC Sport
3.55 and a one legged wonder
removed 3rd cat, single 3" w/flowmaster
tps .701
relocated IAT
Adjustable ECT sensor
K & N drop in
Removed rubber flap
Unplugged LPS(soon to be adjustable
Best 1/4: 15.40 @ 89.52
|
Joe
Dodge Dakota
JOIN HERE
2/26/2003
22:57:08
| RE: Why am I slow?
IP: Logged
Message:
You are not slow. That is an average time. People on this site tend to lie about their times.
|
Anthony G
Dodge Dakota
JOIN HERE
2/27/2003
09:45:36
| RE: Why am I slow?
IP: Logged
Message:
I'm sure having no mufflers hurts your torque while only adding a very minor gain up top where your engine doesn't have much power due to being almost 100% stock. Either throw on some more performance parts or add some back pressure to gain you torque back.
|
Demon Dakota
DakotaEnthusiast
2/27/2003
09:52:27
| RE: Why am I slow?
IP: Logged
Message:
backpressure at full throttle will/could be higher due to having no mufflers if he has the same exhaust diameter. Gas exit velocity & density = TQ. More exit velocity & density = more TQ. A larger TB and a better intake will give him the full gains, but I bet he's maxed out on his relatively stock setup.
K&N Drop in AF (CAI during summer months)
True Dual exhaust and removed third cat
HO Cams & HO Intake
FASTMAN 70mm TB
Autolite 3923 Plugs
TPS @ .76 VDC
IAT Adjuster Mod
14.52@94.2 MPH at Silver Dollar Raceway
|
RaZoR
Dodge Dakota
JOIN HERE
2/27/2003
10:23:33
| RE: Why am I slow?
IP: Logged
Message:
I would say your pushing more like 180 at the wheels but anyway, that time is not bad. I agree that your tires slow ya down a bit and the fact that you've reduced back pressure may be killing your torque more than it improves your horses.
|
Jason
Dodge Dakota
JOIN HERE
2/27/2003
11:14:59
|  RE: Why am I slow?
IP: Logged
Message:
i have a 99 r/t with an M1 intake, 50 mm throttle body, 26 pound injectors, 512 comp cam, ported polished heads, headers, 3 flowmaster exhaust, tci shift kit, msd ignition, msd wires, accell coil, 2500 stall, k&N cold air induction, and comp cam roller rockers, i would like to know what street tires most guys like. the stock goodyears are JUNK.
|
big_torque
Dodge Dakota
JOIN HERE
2/27/2003
12:17:12
| RE: Why am I slow?
IP: Logged
Message:
Nitto NT450 275/50/17
Pirelli Scorpion Zeros
|
Rod
Dodge Dakota
JOIN HERE
2/27/2003
21:18:02
| RE: Why am I slow?
IP: Logged
Message:
I have the Radial T/A's at 275/60/15. They hook up real
well, I dont see why they'd be too tall. I have the stupid
factory 15's. I forgot to mention I have plugs and wires,
not that they do much though.I launched at a little over
idle, maybe 1000 rpm's with little spinning. My trap
speed was about 83 MPH, and a 60' time of about 2.3. I
lost the ttime slip so I dont have the exact times, but my
guess should be really really close.I removed the
factory muffler and didnt do anything else, the cat's pipe
is like 2-3 feet long with a cat in the middle. I didnt
reduce or expand the factory (I believe) 2.5" pipe. Any
other help would be nice, thanks
|
slow2dak
Dodge Dakota
JOIN HERE
2/28/2003
21:25:44
| RE: Why am I slow?
IP: Logged
Message:
slap a different set of tires with a diam. of 26" and put a good set of mufflers on that thing.
|
Rod
Dodge Dakota
JOIN HERE
3/01/2003
15:00:49
| RE: Why am I slow?
IP: Logged
Message:
I'd put a "good set of mufflers" on my truck... but I only need one. Also, how would a muffler do anything to help my cause? it's just more backpressure. Should i get a set of 275-50-15's instead?
thanks again
|
slow2dak
Dodge Dakota
JOIN HERE
3/01/2003
18:11:02
| RE: Why am I slow?
IP: Logged
Message:
what compression is your motor? unless you have a higher compression ratio, better flowing heads and a cam to go with it, there is no need to run without a muffler. low comp. motors need backpressure to scavenge the cylinders. if you have the money, get a sticky set of street tires like some M/T ET Streets in a 26-10.50-15 flavor. if your gonna stick with a regular street tire, go with a 265/50/15, easy to find and not that expensive.
02 4.7 RC Sport
3.55 and a one legged wonder
removed 3rd cat, single 3" w/flowmaster
tps .701
relocated IAT
Adjustable ECT sensor
K & N drop in
Removed rubber flap
Unplugged LPS(soon to be adjustable
Best 1/4: 15.40 @ 89.52
|
HOOT
Dodge Dakota
JOIN HERE
3/02/2003
18:32:41
| RE: Why am I slow?
IP: Logged
Message:
i have a few questions,
i have a 99 r/t with a 512 comp cam, ported polished heads, m1 intake, 50mm throttle body, 26 pound injectors, headers, 3 y pipe, 3 flowmaster exhaust, msd ignition and wires, accell coil and a new pcm. the tranny has a transgo shift kit and a 2500 mopar stall. by the way way i also have a m1 4 barrel. can anybody tell me what the top say 20 upgrades should be done, im just wondering if ive hit most of them or not
|
HOOT
Dodge Dakota
JOIN HERE
3/02/2003
18:37:48
| RE: Why am I slow?
IP: Logged
Message:
i guess i left out the fact that the M1 4 barrel is not on the truck, i have the M1 2 barrel on the truck now
|
big_torque
Dodge Dakota
JOIN HERE
3/02/2003
20:32:46
| RE: Why am I slow?
IP: Logged
Message:
I think you got everything. Excpet maybe :
a tuning device of some kind (roe controller , f.a.s.t , uni-chip )
some kind of ram air hood (shaker)
traction bars
gears (4.10 , 4.56)
I think that 2 brl good for what you got now. That 4 brl might cause you to lose alot of low-end.
Now get a NX kit and yer set !
|
Jason
Dodge Dakota
JOIN HERE
3/02/2003
21:08:53
| RE: Why am I slow?
IP: Logged
Message:
thanks big_torque. i do have a set of traction bars i forgot to mention them. ive also thought about new gears i just didnt know how much it would increase my rpm's cruising at 75 mph. I am going to purchase a new hood i just havent decided on which one yet. i love the shaker hoods and i like the look of the ram air and the cowl hoods just havent decided on what to go with next. my next question is what is a NX kit?
|
slow2dak
Dodge Dakota
JOIN HERE
3/02/2003
23:01:40
| RE: Why am I slow?
IP: Logged
Message:
an NX kit is a Nitrous Express nitrous system.
Mike
02 4.7/Auto RC Sport
3.55 and a one legged wonder
removed 3rd cat, single 3" w/flowmaster
tps .701
relocated IAT
Adjustable ECT sensor
K & N drop in
Removed rubber flap
Unplugged LPS(soon to be adjustable
Best 1/4: 15.40 @ 89.52
|
texaslawdawg
Dodge Dakota
JOIN HERE
3/02/2003
23:56:11
| RE: Why am I slow?
IP: Logged
Message:
Jason:
Gears will make a considerable performance difference, as far as the RPMs go,you can go to randy's ring and pinion web site and he has a calculator. My R/T with 4.56's runs about 385 rpms higher over stock at any given speed. 4.10's would only make about a 100 diff, which is really not noticable.
|
Jason
Dodge Dakota
JOIN HERE
3/03/2003
13:02:13
| RE: Why am I slow?
IP: Logged
Message:
I know that gears make a huge difference i just wasnt sure on how much more my motor would turn with new gears. you said you have 4.56 what kind of gas mileage do you get with 4.56 gears?
|
Jason
Dodge Dakota
JOIN HERE
3/03/2003
21:16:22
| RE: Why am I slow?
IP: Logged
Message:
can somone with 4.10 or 4.56 gears tell me how it affected their MPG. i use my truck as a daily driver and with gas being so high its important
|
yates-in-DE
*GenIII*
3/04/2003
00:17:23
| RE: Why am I slow?
IP: Logged
Message:
If gas prices are important, uh, don't drop your gear ratio. If you are one of the OPEC Tribal Members then Putum in. Garanteed reduction in Fuel Milage.
I don't know why you are so slow Rod, um, Birth Defect maybe. j/k
Later,
Lynn
 Clic the pic
|
99dakota
Dodge Dakota
JOIN HERE
3/04/2003
09:07:25
| RE: Why am I slow?
IP: Logged
Message:
I have a 99 4x4 cc w/ a 318 5 speed and I ran a 15.6 @ 92 mph w/ 3.55 gears and 31X10.5-15 all terrian tires and no traction w/ the truck completly stock. with bad plugs and wires
|
Rod
Dodge Dakota
JOIN HERE
3/04/2003
14:08:06
| RE: Why am I slow?
IP: Logged
Message:
see what I mean, the guy who posted above me is
faster with less mods, crappy tires (compared to mine),
heavier truck, 4x4, and no upgrades. This is pissing me
off. I wanna run a 14 so I have something to brag about,
at least I have a 5 speed and a v8
|
Texas Todd
Dodge Dakota
JOIN HERE
3/04/2003
16:05:15
|  RE: Why am I slow?
IP: Logged
Message:
This is a funny subject question.
'Why am I slow?'
Maybe because you rode to school on that short bus?
Hahahaha, NOTHING personal, J/K!
|
Fluid
Dodge Dakota
JOIN HERE
3/04/2003
19:57:51
| RE: Why am I slow?
IP: Logged
Message:
Comparing times off a message board is almost useless. As others have stated, not everyone here is 'truthful' about their truck's times. Also, a lot depends on the track itself - you can run 0.5 seconds different ( or more ) at different tracks with the same truck...or at the same track on different days. I thought everyone knew that! BTW, that time doesn't look that far off to me.
The guy runing 26# injectors is wasting his $$$ - a lot of N/A R/T owners tried the 24#ers and went back to stock 19#ers - they ran too rich and lost power with the 24#ers....where'd he get 26#ers anyway?
The guy who says that his new gears give the same 385 rpm increase at any given speed needs to go back to school.....he's so wrong it isn't even funny! :) Here is how to figure it yourself:
New gears/old gears x old rpm = new rpm.
Simple math.....what has happened to our school system?
|
paysonbadboy
Dodge Dakota
JOIN HERE
3/04/2003
20:28:58
| RE: Why am I slow?
IP: Logged
Message:
Don't forget ALTITUDE makes a HUGE difference.
Lower altitude has MORE DENSE AIR.
For an example. When you are used to driving a car in the high country of Arizona which is above 5000 ft altitude, and then you drive down to Phoneix which is near sea level, it feels like you bolted on a BLOWER to your ride!
Serious. It's the difference of almost 1 second 0 to 60 and wheather your tires spin or not.
My friend told me going to parts of Texas where it's low and humid, that his Camero felt like he added a blower compared to back home.
I notice a difference each time I go up to Payson from Phoenix in my stock car. It looses power when I get up there. That sucks.
www.paysonarizona.net
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Optional
All visitors are allowed to post messages
|
