02 3.9 Liter Exhaust Upgrade Questions - DODGE DAKOTA FORUM - FORUM AND OWNERS CLUB!
DODGE DAKOTA FORUM - FORUM AND OWNERS CLUB!  

Go Back   DODGE DAKOTA FORUM - FORUM AND OWNERS CLUB! > DODGE DAKOTA FORUM - General Discussion > Dodge Dakota General Discussion
Dodge Ram Dodge Durango Dodge Nitro Jeep
Diesel Forums!
Dodge Ram Forum Dodge Durango Forum Dodge Nitro Forum Jeep Forum
Dodge Challenger Dodge Charger Chrysler 300 Dodge Magnum
Dodge Caliber
Dodge Challenger Forum Dodge Charger Forum Chrysler 300 Forum Dodge Magnum Forum


Dodge Dakota General Discussion General Chat about the Dodge Dakota. Please look for other categories to post specific questions in.

Reply
 
Thread Tools
  #1  
Old 02-12-2020, 09:01 PM
Ricochetrider Ricochetrider is offline
Dodge Dakota Forum Newcomer
 
Join Date: Feb 2020
Posts: 2
Rep Power: 0
Rep:10
Ricochetrider is on a distinguished road
Default 02 3.9 Liter Exhaust Upgrade Questions

Hi guys, haven't posted here in a while but I have an 02 Dakota, as the title suggests, with a 3.9 six & a manual transmission.

Snapped and exhaust manifold bolt/stud, and am thinking while I'm fixing it, rather than just re-fixing the old system, I'll do some upgrading and add performance headers, get somebody to bend me ups straight dual exhaust, and MAYBE get a wee bit more power out of the old beast?

SO anyway, I'm thinking cat-forward headers. I know there's probably a million options, and that's why I'm turning to fellow Dakota owners to see what people suggest.

I have a somewhat local custom exhaust shop with mandrel benders etc but the gentleman suggested I figure out what headers to orderfor the system, and he'd take it
from there.

Over the years, I've put piles of money into this truck, and usually choose upgrade parts to replace the standard stock bits. I've piece-mealed exhaust bits all along but this time, I want to just do it right. Or do it better in any case. Time for a "real" exhaust.

SO: Performance (CAT FORWARD) headers... What's anyone using on their 2nd Gen Dakota?

Thanks in advance!

Tom aka Ricochetrider
__________________
DakotaForumz.com | Dodge Dakota Forum | Dodge Dakota Forums | Dodge Dakota Performance | Dodge Dakota Accessories
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 02-12-2020, 09:49 PM
Ricochetrider Ricochetrider is offline
Dodge Dakota Forum Newcomer
 
Join Date: Feb 2020
Posts: 2
Rep Power: 0
Rep:10
Ricochetrider is on a distinguished road
Default

Found a pair of ceramic coated, cat forward headers by JBA on the World Wide Web. 373.00 USD
Will wait for responses here tho.
__________________
DakotaForumz.com | Dodge Dakota Forum | Dodge Dakota Forums | Dodge Dakota Performance | Dodge Dakota Accessories
Reply With Quote Quick reply to this message
  #3  
Old 02-13-2020, 02:18 AM
RXT RXT is offline
Dodge Dakota Forum Member
 
Join Date: Nov 2013
Posts: 394
Vehicle: 99 Dodge Dakota
Trim Level: None
Color: Black
Engine: 1997-1999 - 5.2 L (318 cu in) Magnum V8, 225 hp (168 kW)
Rep Power: 7
Rep:20
RXT is on a distinguished road
Default

You want my honest opinion? Fix the stud and put the manifolds back on.

Headers will not give you much of a performance increase if any at all, and the reason why is, headers work best at high engine rpms, usually above 3500rpm. Most of the time, your engine will be running at low rpm, typically in the 2000-2500 rpm range.

To make matters worse, your little V6 doesn't really breathe well above 3500 rpm where headers would make a difference. Think of an engine as an air pump. Air goes in one side and air comes out the other side. Headers would improve breathing (at higher rpms) on the out side, but you don't have more air getting in, on the intake side and unfortunately, outside of adding a turbo, there isn't many performance parts for the 3.9

The factory manifolds are sufficient for most driving conditions and flow very well at normal operating rpms. They also won't rust out, like headers usually do. Manifolds do not create more under hood heat like headers will, which can heat soak starters and make summer driving a problem. If you want to make an improvement in your exhaust, you could "upgrade" the exhaust with a dual cat-back system.

Ed
__________________
Ignore my vehicle info. My Dakota has a quad cab swap, a solid axle swap and a Cummins swap
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the DODGE DAKOTA FORUM - FORUM AND OWNERS CLUB! forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address

Please enter a valid email address for yourself.

Note: If your email address requires someone to click a link before they can send you email, DO NOT REGISTER WITH IT as no one is here to click the link and you will never get your activation email!
We have banned MANY Free email providers.
If you get notice that your email address is banned when you try to sign up, it is because its been banned due to spammers using the provider, or too many members bouncing emails we send back to us via the free provider! If this happens to you, you will need to use a different email. If you do not provide a valid email address you will not receive your activation email. We recommend that you register with an email address which is attached to your ISP! Not a free service! We have found that using free accounts causes you to not receive your registration email. In any case, you should add DakotaForumZ.com to your spam filter whether using a free account or your ISP account. If you bounce email to us, you will have your account deleted and your IP address banned!

Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


» Advertisement



All times are GMT. The time now is 03:02 PM.


Powered by vBulletin® Version 3.8.10 Beta 2
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vB.Sponsors
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright © VerticalScope Inc. All rights reserved.