mellonman Posted October 15, 2012 Share Posted October 15, 2012 Now i dont know anything at all about exhaust flow rate but what would a 3" that splits off into 2 x 2" flow like compaired to a straight 3" will it flow better as 2x2" makes 4" or is the 3" still the restriction? Link to comment Share on other sites More sharing options...
SteveC Posted October 15, 2012 Share Posted October 15, 2012 No, it's the 2 x 2" sections that's the most restrictive. The 2 x 2" sections combined have a sectional area of 6.28 square inches, whereas the single 3" section has a sectional area of 7.07 square inches - around a 12.6% increase. Link to comment Share on other sites More sharing options...
mellonman Posted October 15, 2012 Author Share Posted October 15, 2012 well done that man i really should of thought abouit it more and done the maths Link to comment Share on other sites More sharing options...
scott87 Posted October 15, 2012 Share Posted October 15, 2012 Was this asked in reference to the exhaust i had made? Just wondering Link to comment Share on other sites More sharing options...
mellonman Posted October 15, 2012 Author Share Posted October 15, 2012 Was this asked in reference to the exhaust i had made? Just wondering did you get one made? is this what you was after my stock exhaust for? i asked this question to see weather i could get the stock exhaust to be useable to get my car back on the race track. Link to comment Share on other sites More sharing options...
scott87 Posted October 15, 2012 Share Posted October 15, 2012 Yer, i was just about to pm you and ask if i could buy just your backbox. Here is the page with what i had made: http://mkivsupra.net/vbb/showthread.php?276741-Project-N-A-First-Supra/page3 Link to comment Share on other sites More sharing options...
mellonman Posted October 15, 2012 Author Share Posted October 15, 2012 that looks good mate how much was it and what size pipe did you go for? thinking about doing the same with mine as its starting to grate on me abit how loud it is at the moment Link to comment Share on other sites More sharing options...
scott87 Posted October 15, 2012 Share Posted October 15, 2012 Yer i'm really pleased with it :-) It was £150 all in so a pretty good price. It is ever so slightly larger than the original toyota one. But the shape of the y section is smoother and the path the pipes follow have been shortened to reduce the distance to the backbox. Sounds fab. Does that mean your backbox may not be for sale? Link to comment Share on other sites More sharing options...
Noz Posted October 15, 2012 Share Posted October 15, 2012 if you have a 3" square tubing exhaust you'd have loads of flow Link to comment Share on other sites More sharing options...
mellonman Posted October 15, 2012 Author Share Posted October 15, 2012 Yer i'm really pleased with it :-) It was £150 all in so a pretty good price. It is ever so slightly larger than the original toyota one. But the shape of the y section is smoother and the path the pipes follow have been shortened to reduce the distance to the backbox. Sounds fab. Does that mean your backbox may not be for sale? well if i cant sell it then i wanted to do something with it but by the looks of it im failing already so its back to the drawing book even if you wanted just the back box its still big and heavy lol Link to comment Share on other sites More sharing options...
scott87 Posted October 15, 2012 Share Posted October 15, 2012 well if i cant sell it then i wanted to do something with it but by the looks of it im failing already so its back to the drawing book even if you wanted just the back box its still big and heavy lol It is but i know that parcel2go will send a parcel that size up to 15kg pretty cheaply? Link to comment Share on other sites More sharing options...
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