Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Optimum diameter for exhaust
#13
the most important bit is the collector and downpipe.. it needs to be larger, 2.5 at least, 3 inch preferable, this should then run into at least 2.5 and then you can taper down when moving away from the exhaust to a free flowing 2 inch (minimum) as the gas pressure will have dropped considerably as it moves away from the exhaust.. i would want to be at least 2.5 to where the cat was orignally however..


ideally, 2.5/3 inch all the way through with no restrictions like a cat!

(16-06-2015, 03:04 PM)306rhys Wrote: Thanks for the replies!

I'll go for a 2.5" system  then, I'm looking for a de car, only one I can find is the Hoffman which is mild steel, anyone know where I could source a stainless steel de cat?


(16-06-2015, 03:04 PM)306rhys Wrote: Thanks for the replies!

I'll go for a 2.5" system  then, I'm looking for a de cat, only one I can find is the Hoffman which is mild steel, anyone know where I could source a stainless steel de cat?

  Mild steel decats from hoffman are fine....  the only real issue is the mild steel backboxes as they dont usually get hot enough to deal with the condensation and water..    


hoffman decat,  with a stainless cat-back (or from where the cat is/was) will be fine. 

have a look on yell,  or the like.. quite often there will be a little performance place that will do the pipework for you for a lot less than longlife, and it will be exactly to your specifications. 
Given the choice between Niall and the sheep. I would choose the sheep!
/Toseland
Reply
Thanks given by:


Messages In This Thread
Optimum diameter for exhaust - by 306rhys - 16-06-2015, 09:19 AM
RE: Optimum diameter for exhaust - by mr_fish - 16-06-2015, 09:22 AM
RE: Optimum diameter for exhaust - by 306rhys - 16-06-2015, 09:29 AM
RE: Optimum diameter for exhaust - by Dum-Dum - 16-06-2015, 10:14 AM
RE: Optimum diameter for exhaust - by silverzx - 16-06-2015, 10:30 AM
RE: Optimum diameter for exhaust - by mr_fish - 16-06-2015, 10:32 AM
RE: Optimum diameter for exhaust - by silverzx - 16-06-2015, 10:33 AM
RE: Optimum diameter for exhaust - by Poodle - 16-06-2015, 12:36 PM
RE: Optimum diameter for exhaust - by Connor - 16-06-2015, 12:38 PM
RE: Optimum diameter for exhaust - by Frosty - 16-06-2015, 12:45 PM
RE: Optimum diameter for exhaust - by 306rhys - 16-06-2015, 03:04 PM
RE: Optimum diameter for exhaust - by welshpug - 16-06-2015, 03:22 PM
RE: Optimum diameter for exhaust - by toseland - 16-06-2015, 04:05 PM
RE: Optimum diameter for exhaust - by 306rhys - 18-06-2015, 07:22 AM
RE: Optimum diameter for exhaust - by pro_steve - 18-06-2015, 03:31 PM
RE: Optimum diameter for exhaust - by toseland - 18-06-2015, 06:55 PM
RE: Optimum diameter for exhaust - by 306rhys - 18-06-2015, 08:57 PM
Optimum diameter for exhaust - by Sambarker - 20-06-2015, 11:30 PM

Possibly Related Threads…
Thread Author Replies Views Last Post
  Diameter of the elbow for turbo connection mattbarker32 5 1,378 18-09-2016, 08:14 PM
Last Post: toseland
  Lower air box pipe diameter? JTaylor2005 2 1,026 26-01-2016, 09:22 PM
Last Post: DeeTurbo
  Air filter inlet diameter aaron_one 5 1,324 02-11-2015, 02:06 PM
Last Post: aaron_one

Forum Jump:


Users browsing this thread: 1 Guest(s)