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nbukrey
Dodge Dakota
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1/04/2003
00:40:14
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 Subject: Red Line on the 3.9
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Hey guys I have an older (87) Dakota with the pre mag 3.9 in it. I am getting a tach and i am wondering what I should set the red line at on the tach...???
Thanks for any help
Nick
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pup
Dodge Dakota
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1/04/2003
02:31:03
| RE: Red Line on the 3.9
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i got a 96 with a factory tach, factory is 6 i got mine to 7 with no prob, after that it's sketchy
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Todd W
GenIII
1/04/2003
14:36:30
|  RE: Red Line on the 3.9
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7000 RPM?
Egads... I've never run mine over 5500, mostly because there isn't -crap- for power above that. I really don't think 7000RPM on a stock engine is anywhere -near- safe. These are American truck V6 engines, not little Honda 8000RPM 4-cyl 'ricer' motors for little 2-door 1500lb cars.
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joe_himself
Dodge Dakota
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1/04/2003
17:37:25
| RE: Red Line on the 3.9
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LOL @ todd w.. true true.. i have only hit 5800 or so ..little above 5500 in my truck.. wont go past that and no need to.. and then once again we dont have those ricer engines that handle 8000 rpms.. haha
joe_himself
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92Dakota
Dodge Dakota
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1/04/2003
20:12:04
| RE: Red Line on the 3.9
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Hmm...I have a 92 with the same 3.9 and the redline is at 4800 RPM
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magoo
Dodge Dakota
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1/04/2003
20:39:13
| RE: Red Line on the 3.9
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yea, I have 99 3.9 and the redline on the factory tach says 4800... even though I have taken it above that on accident once.
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Neil
Dodge Dakota
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1/05/2003
21:31:34
| RE: Red Line on the 3.9
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i have never tooken my kota past 4400 rpms. At 4200 it sounds like it is going to blow up.
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88 SC DAK
Dodge Dakota
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1/05/2003
21:42:11
| RE: Red Line on the 3.9
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I couldn't get mine to get past 4200 until the exhaust and blower. It would just wouldn't go any further. Guess that's what help it do 19.8's in the 1/4.
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Mudslinger
Dodge Dakota
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1/05/2003
21:42:30
| RE: Red Line on the 3.9
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My 94 factory redline is 4800 also...after I hit about 4 the engine sounds awful! there is a high-pitched whining noise...I hate that, The flowmaster sounds pretty good though :)
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BigBen
Dodge Dakota
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1/05/2003
21:45:28
|  RE: Red Line on the 3.9
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I have a 98 and the factory dash says 4800, but i have taken it all the way up to 5400. So go figure?? Oh yeah, dont the dakota's have a fuel shut off that stops the truck from reving too high?
98 dakota
Flowmaster 40
Airade intake
255/60/17 BFGoodrich Comp T/A's w/ R/T rims
*hotchkis 2/3 drop at the end of this month
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00dak
Dodge Dakota
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1/06/2003
13:43:26
| RE: Red Line on the 3.9
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Hey pup, if for some odd reason your dak is auctally able to get over the factory redline of 5250rpm with out exploding do you have to rotate or repack your muffler barings every 3,000 miles. Or do you have to constantly have to refill your headlight fluid, because I would really love to know how your truck will do 6000-7000 rpm.
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CHRISTOPHER
Dodge Dakota
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1/07/2003
08:20:15
|  RE: Red Line on the 3.9
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I HAVE A 1997 DAK AND MINE REDLINES AT ABOUT 6000 RPM I DONT UNDERSTAND WHAT THE DEAL IS IT SOUNDS LIKE IT WANTS TO KEEP GOING BUT AT THAT POINT IM RUNNING ABOUT 110 BUT ALSO HAS GOT 130,000 MILES I THINK THAT IT HAS BOUGT BURNT THE CHIP OUT
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00dak
Dodge Dakota
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1/07/2003
09:03:36
| RE: Red Line on the 3.9
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Is this just a thing that the 5-spds can do?
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christopher
Dodge Dakota
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1/07/2003
09:26:44
|  RE: Red Line on the 3.9
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oh yea that 5speed is bad ass brough you can be running in odrive and push that baby off and haul some ass i never would have thought a v6 would have so much power.but still with 130,000 this bitch wiil run its nothing but a stock engine imagine if yu was to hoop that babe up?probaly run about 150 are better huh?.i need to ask a question about this engine for some reason when it idles its got a crazy claddering sond the people i bought it from said that it did not do that until they changed the air compressor they did it their self and said he thinks he tightend the pully to tighti think it could be binding the motor down causing that sound.i know it is not the valves or rods i had it checked outand said it wasent nothing what do you think
write back
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daniel b
Dodge Dakota
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1/07/2003
11:19:47
| RE: Red Line on the 3.9
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hey i got a 97 dak and it rd lin's at 6000 i havent had to get it that high because of the power it puts out and it is factory as well at 5000 its at about 120 and after that it shuts off but the power is a force to be reconed with for a truck its too light though
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MadMaXX
Dodge Dakota
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1/08/2003
03:49:41
|  RE: Red Line on the 3.9
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ok id luv to see a 3.9 hit 7000 on the tach and still keep the rods inside the block...ive got a 99 and if i remember right the red starts on my tach around 5500, and the tach stops at 6k know i know some of the tachs for the newer daks stop at 7k, but im not sure what motors have those dashes.
i have had mine up to 6k but i have to mash it hard and hold it...then when it hits 6k itll shift, im not sure what is keepin mine togeather...although i still think my 3.9 has the soul of a hemi :)
as for only doin 110 and tachin 6k?? sounds like your motor could use some help....cuz mine is only tachin 3200-3500 and 110, its been awhile since ive done that so im not exactly sure. i try to keep from runnin mine todeath cuz i plan on usein the same block when i rebuild it, but i do know that i was no where near 6k when i hit 110
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Todd W
GenIII
1/08/2003
05:10:33
| RE: Red Line on the 3.9
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MadMaxx,
Heh, mine too. My tach ends at 6500, but there is -no way- you'll see it up there unless I've done some major work to the bottom end... like getting the crank balanced and blueprinted, stronger rods and wrist pins... not to mention getting a better timing chain and stronger springs in the heads. At that RPM, those valves will be a-floatin...
I'm considering using my block instead of buying a new truck and building a 318. I mean, heck, this little V6 has been so darned -good- to me that it'd almost be a shame not to reuse it...
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MadMaXX
Dodge Dakota
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1/09/2003
03:27:53
| RE: Red Line on the 3.9
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i need to make a corection there...its been so long since i really paid much attention to my tach that i forgot what it looked like...i was wrong, the red line starts around 4600 and my tach ends at 6...but other than that everything else is true
sorry bout the mess up
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Deep Purple
Gen III
1/10/2003
07:44:31
| RE: Red Line on the 3.9
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Without a cam change and some head work, power fall off sharp after about 5500 rpms. You want to shift where you engine makes the most power. If you want top rpm that the engine will run at, well that's a different story.If you tach up to and beyond 7000 watch out for flying parts.
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Todd W
GenIII
1/11/2003
02:01:30
| RE: Red Line on the 3.9
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I need to make a correction too, for the same reason. Seems my tach only goes to six, but the red starts at five. No reason to go that high though, like Deep Purple says.
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Chip B.
Dodge Dakota
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1/11/2003
02:28:46
| RE: Red Line on the 3.9
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Did anybody else read Christophers input on 1/07/2003 and wonder ....what in the heck is that guy smoking and even more importantly, where can I get some?
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