Headers/Exhaust
#1
Registered User
Thread Starter
Join Date: Aug 2005
Location: Pittsboro, NC
Posts: 109
Likes: 0
Received 0 Likes
on
0 Posts
Headers/Exhaust
My exhaust system is starting to rust through and I need to replace the whole thing some time soon. Its a '98 4runner with the 3.4 L engine. I was wondering what kind of options there are out there for exhaust systems and headers, and what a good combo would be. Any input would be apreciated, thanks in advance.
Last edited by Thrillbilly; 03-12-2007 at 05:42 PM.
#2
Registered User
Join Date: Feb 2007
Location: Gateway City
Posts: 536
Likes: 0
Received 0 Likes
on
0 Posts
exhaust
Don't bother with the headers waaaaaaay too expensive plus they are a pain in the a$$ to install. I heared some good things about the jardine cat-back set up for 3rd gens, Thats the exhaust I look foreward to when the time comes.
#4
Registered User
Join Date: Jan 2005
Location: Vancouver, British Columbia
Posts: 575
Likes: 0
Received 0 Likes
on
0 Posts
I have installed the TRD Headers with a full custom Magaflow exhaust on my 97 4Runner.
Yes the Headers are expensive and a pain to install, but with my set-up I did notice a gain in Throttle Response, and some low end torque!!
Yes the Headers are expensive and a pain to install, but with my set-up I did notice a gain in Throttle Response, and some low end torque!!
#6
Registered User
Performance Products sells 'em:
http://www.performanceproducts4truck...brand&bid=1795
#7
Registered User
Join Date: Jan 2005
Location: Vancouver, British Columbia
Posts: 575
Likes: 0
Received 0 Likes
on
0 Posts
[QUOTE=midiwall;50467148]Interesting... You're the first person I've heard say that who wasn't SC'd. They screwed up my performance something awful when I put them on pre-SC.
Well there could be other reasons for this!! I only run 90 octane or better (ethanol blend) in my truck, Proformance Wires, Deckplated with TRD Filter, ISR mod, Full cat-back Exhaust. And I clean my Injectors at every oil change.
Well there could be other reasons for this!! I only run 90 octane or better (ethanol blend) in my truck, Proformance Wires, Deckplated with TRD Filter, ISR mod, Full cat-back Exhaust. And I clean my Injectors at every oil change.
Trending Topics
#8
Registered User
Well there could be other reasons for this!! I only run 90 octane or better (ethanol blend) in my truck, Proformance Wires, Deckplated with TRD Filter, ISR mod, Full cat-back Exhaust. And I clean my Injectors at every oil change.
#10
Registered User
Yeup. And it's been talked about here before by other folks as well.
Keep in mind we're talking about the 3.4L, not the 3.0 or 2.2 where even tying a coffee can to the end of a piece of galvanized pipe would help them.
In my case, I put on headers and a full cat-back with 2 1/2" pipe. The issue became that there wasn't enough back-pressure to create enough scavenging, and the exhaust cycle left crap in the cylinder, robbing power.
In addition, the headers dropped the onset of the power band by about 800rpm. That's great for a SC engine, where the power comes on earlier, but not NA.
Bottom line, the truck ran like crap.
Keep in mind we're talking about the 3.4L, not the 3.0 or 2.2 where even tying a coffee can to the end of a piece of galvanized pipe would help them.
In my case, I put on headers and a full cat-back with 2 1/2" pipe. The issue became that there wasn't enough back-pressure to create enough scavenging, and the exhaust cycle left crap in the cylinder, robbing power.
In addition, the headers dropped the onset of the power band by about 800rpm. That's great for a SC engine, where the power comes on earlier, but not NA.
Bottom line, the truck ran like crap.
#12
Registered User
Join Date: Jan 2005
Location: Vancouver, British Columbia
Posts: 575
Likes: 0
Received 0 Likes
on
0 Posts
#13
Registered User
#14
Registered User
Join Date: Jan 2005
Location: Vancouver, British Columbia
Posts: 575
Likes: 0
Received 0 Likes
on
0 Posts
#15
Registered User
n/m... "your mileage may vary".
geez
#17
Registered User
With the bigger piping and more efficient flow through the headers, then on a NA engine, you're reducing the back pressure which will reduce the scavenging, which is a natural effect that helps get the exhaust out of the cylinder.
If you throw the SC into the mix, everything changes... The headers will unlock 30+ HP and about the same in torque and push the powerband down to where the SC really starts to shine.
#18
Registered User
Join Date: Jun 2002
Location: Charlesbourg (Qc)
Posts: 188
Likes: 0
Received 0 Likes
on
0 Posts
It's funny because on BMWs, headers are a proven way to get some HP, both in regular and cammed N/A situations. But not all headers are ok for forced induction.
Goes to show that all engines react differently.
Goes to show that all engines react differently.
#19
Registered User
The 3.4L is not a typical engine when it comes to exhaling. It's not a 6.0L diesel that will actually handle a 5" exhaust; it's not a large block Chevy that will handle straight pipes..
You have to treat ANY engine situation as unique. It's simply not valid to take something that you learned on "A" and apply it to "B".
Thanks for the babble...