back pressure help me plz - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 12-09-2007
Downey's Avatar
RF Veteran
Thread Starter
iTrader: (1)
 
Join Date: Oct 2007
Location: Muncy, PA
Posts: 8,470
back pressure help me plz

I want to run dual exhaust on my truck but i dont want to run it all the way out the back of the truck. what i want to do is run 2.25" pipe into punched cats and then into glass pack that are mounted backwards. then put turn downs on it about a foot and a half b4 the axle. my ? is with that set up remember this is true duals will i have enough back pressure? or if i run then all the way out the back or have a turn to the sides b4 the rear tires with that be better?



Thanks
Reply With Quote
  #2  
Old 12-09-2007
01xltranger4x4's Avatar
Member
iTrader: (3)
 
Join Date: May 2005
Location: MI
Posts: 3,200
I wouldn't run no cats to a glasspack, IMO it will sound terrible.

Get a set of high-flow cats, a si-do or si-so MUFFLER (not a glasspack), then put dumps on it.
Reply With Quote
  #3  
Old 12-09-2007
Downey's Avatar
RF Veteran
Thread Starter
iTrader: (1)
 
Join Date: Oct 2007
Location: Muncy, PA
Posts: 8,470
i have heard them most people mount the the the other way so the high notes come out and sound like a rice burner but i have his set up on my 2.8l v6 s10 and it sounds like a throaty v8
Reply With Quote
  #4  
Old 12-09-2007
optikal illushun's Avatar
Member
 
Join Date: Oct 2004
Location: Coal Region, MTC to be exact...heart of the coal region.
Posts: 2,232
back pressure is bad, end of story.
Reply With Quote
  #5  
Old 12-09-2007
Downey's Avatar
RF Veteran
Thread Starter
iTrader: (1)
 
Join Date: Oct 2007
Location: Muncy, PA
Posts: 8,470
so what ur saying is with that free flowing of an exhaust it will be ok on the motor????
Reply With Quote
  #6  
Old 12-09-2007
optikal illushun's Avatar
Member
 
Join Date: Oct 2004
Location: Coal Region, MTC to be exact...heart of the coal region.
Posts: 2,232
yup
Reply With Quote
  #7  
Old 12-09-2007
Downey's Avatar
RF Veteran
Thread Starter
iTrader: (1)
 
Join Date: Oct 2007
Location: Muncy, PA
Posts: 8,470
hey thanks thats what i wanted to know because alot of people on here make it sound like omg ur motor will die



thanks again
Reply With Quote
  #8  
Old 12-09-2007
01xltranger4x4's Avatar
Member
iTrader: (3)
 
Join Date: May 2005
Location: MI
Posts: 3,200
You NEED a certain amount of back pressure to have use-able low-end torque for the "low" RPM range. If you remove a substantial amount of back pressure from your exhaust it will feel like you have to get the RPM range MUCH higher to accelerate at the same rate as you did before.

I agree a free-flowing exhaust will help you, but there is a limit where you can go too free-flowing also.
Reply With Quote
  #9  
Old 12-09-2007
Downey's Avatar
RF Veteran
Thread Starter
iTrader: (1)
 
Join Date: Oct 2007
Location: Muncy, PA
Posts: 8,470
well i will do it like that and if i dont like it will send it the rest of the way out the back so it has more thanks alot guys u pulled threw i was about realy to leave the sight but u guys changed my mind
Reply With Quote
  #10  
Old 12-10-2007
wydopnthrtl's Avatar
Member
iTrader: (2)
 
Join Date: Dec 2005
Location: SE, Mi
Posts: 2,342
On a small V6 with a short stroke... I'd run a 2" pipe vs something larger. At lower rpms your simply not moving much air (exhaust velocity) and scavaging just isn't taking place. You will loose some low end TQ. But if your happy with the change.. who cares.

Reducing the back pressure will raise the TQ curve. So.. as long as you like the power and noise.. it's your truck. Do what you want to.

Rich
Reply With Quote
  #11  
Old 12-10-2007
Downey's Avatar
RF Veteran
Thread Starter
iTrader: (1)
 
Join Date: Oct 2007
Location: Muncy, PA
Posts: 8,470
thanks Rich im guna run 2.25 because im taking it off my s10 and and modifying it to work on my ranger. i cant aford different pipe
Reply With Quote
  #12  
Old 12-10-2007
greygooseranger's Avatar
Member
 
Join Date: Apr 2006
Location: SE Michigan
Posts: 3,293
Understandable, but just be aware that you aren't running the best size for your motor, so your performance will suffer (as compared to the performance of 2" pipe)
Reply With Quote
  #13  
Old 12-10-2007
Downey's Avatar
RF Veteran
Thread Starter
iTrader: (1)
 
Join Date: Oct 2007
Location: Muncy, PA
Posts: 8,470
yea i know but i dont have the cash to get new pipe
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Question about back pressure and converter Starlifter SOHC - 2.3L & 2.5L Lima Engines 4 09-09-2014 05:12 AM
Oil Pressure Port Location for adding an aftermarket oil pressure sending unit FRXLT 2.9L & 3.0L V6 Tech 29 01-31-2012 11:05 AM
True Duals, need to restore back pressure. Cidepipes 4.0L OHV & SOHC V6 Tech 27 04-22-2010 02:21 AM
99ranger center consol removal help plz helliboarder Interior Semi-Tech 8 10-03-2004 10:46 PM
edit//// what could be wrong with my truck? (help plz) benny General Technical & Electrical 19 08-31-2004 11:54 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 03:20 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.