Mr dori Posted March 14, 2008 Share Posted March 14, 2008 Any ideas, is equal length as critical as its force feed? runner size? 1 1/4? Wana get the 6 banger cranking with no turbo Quote Link to comment Share on other sites More sharing options...
Ke36 Posted March 14, 2008 Share Posted March 14, 2008 equal length is always best doesnt matter wether its n/a or turbo would assume they are more like n/a style/size etc though as your obviously not feeding into a turbo Quote Link to comment Share on other sites More sharing options...
kpr Posted March 14, 2008 Share Posted March 14, 2008 yeh supercharged is same deal as n/a. since you dont have backpresure of turbo. Quote Link to comment Share on other sites More sharing options...
Testament Posted March 14, 2008 Share Posted March 14, 2008 Equal length is FAR more important for supercharged/ or n/a than turbo. It's way overrated for turbos, heat is more important in that case. On a 4cyl you usually go fore 4-1 style, so on a 6 I would guess either 6-2-1 or 6-1 would be the go. Quote Link to comment Share on other sites More sharing options...
kpr Posted March 14, 2008 Share Posted March 14, 2008 make a mean collector/s like a showed you as well. not that hard to do once you know how. whole lot better than that off the shelf shit most places sell. Quote Link to comment Share on other sites More sharing options...
Mr dori Posted March 14, 2008 Author Share Posted March 14, 2008 Yea willl try attemp a collector bro, may need a mig as my fab skills are not to awesome as yours! Hmm, best way to get equal length as in measureing etc...? Quote Link to comment Share on other sites More sharing options...
Testament Posted March 14, 2008 Share Posted March 14, 2008 use maths and some wire or something. if you can get them all within about 50mm should be sweet. Quote Link to comment Share on other sites More sharing options...
kpr Posted March 14, 2008 Share Posted March 14, 2008 just measure with tape, if your real hardout, you could measure the volume of each runner by filling it with water. there was a pretty good site with a calculator, to tune them to certen rpm. gives tube size and and length etc., will try find it Quote Link to comment Share on other sites More sharing options...
Testament Posted March 14, 2008 Share Posted March 14, 2008 it's a big late once you get to the point where you can fill them with water though? once you have roughly worked out the layout its a matter of tacking sections together and then making alterations to those before doing the final welds. Quote Link to comment Share on other sites More sharing options...
Mr dori Posted March 14, 2008 Author Share Posted March 14, 2008 so ill make em up roughly,get string or somthing and adjust from there, is shorter runners good for low rpm? or long for high? Quote Link to comment Share on other sites More sharing options...
kpr Posted March 14, 2008 Share Posted March 14, 2008 other way around bro. longer for low rpm. short for high rpm. probably make them a bit under 1m long if 6-1, for decent compromise. i'l try work some shit out for you Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted March 14, 2008 Share Posted March 14, 2008 because supercharged motors make instant brutal torque, you'd want to tune your length for further up the rev range. With a blown motor, you just want to get rid of the extra gasses. I'd lean more towards a larger diameter primary, and in more of a medium length. Small dia long pipes are all about the down low. Quote Link to comment Share on other sites More sharing options...
Testament Posted March 14, 2008 Share Posted March 14, 2008 1m is tuned for around about 5000rpm (very roughly) cam timing makes some difference to the length also. Quote Link to comment Share on other sites More sharing options...
Guest vvega Posted March 14, 2008 Share Posted March 14, 2008 it's a big late once you get to the point where you can fill them with water though? once you have roughly worked out the layout its a matter of tacking sections together and then making alterations to those before doing the final welds. string works good im guessing youve made a few sets... cause you have dam good advice that i hope this guy follows Quote Link to comment Share on other sites More sharing options...
Guest vvega Posted March 14, 2008 Share Posted March 14, 2008 because supercharged motors make instant brutal torque, you'd want to tune your length for further up the rev range.With a blown motor, you just want to get rid of the extra gasses. I'd lean more towards a larger diameter primary, and in more of a medium length. Small dia long pipes are all about the down low. pipe diamter changes tuned length a larger diameter piper allows you to have a shorter pipe with teh same hemholz fequency in thery its easlity acheveable to have 2 very different looking set's that give identical proformace chaerictristics Quote Link to comment Share on other sites More sharing options...
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