papa_smurf49319 Posted October 26, 2009 Report Share Posted October 26, 2009 not to thread jack or anything, but is there much gain to be had with the worm holes? Cody Quote Link to comment Share on other sites More sharing options...
SLORYDER Posted October 26, 2009 Author Report Share Posted October 26, 2009 not to thread jack or anything, but is there much gain to be had with the worm holes? Cody I've heard that worm holes contribute to midrange power, but not for sure. Quote Link to comment Share on other sites More sharing options...
papa_smurf49319 Posted October 26, 2009 Report Share Posted October 26, 2009 ya ive heard that they smooth the powerband out. Quote Link to comment Share on other sites More sharing options...
AKheathen Posted October 26, 2009 Report Share Posted October 26, 2009 PT High revs peaking at 7,500 rpm? I have several dyno sheets that put the PT mids peaking at over 8,000 rpm. So I hardly doubt the high rev was designed to peak at less rpm than than the high rev. x2, the 7500 peak is alosest to match the pro-circuits. do a little more reaserch on the pipes, but i'd have to guess you would want it to peak around 8500-8700......just a guestimate, as i don't know that as a fact, but i know the procircuits are low vs. pt highs......and remember, opening transferports too much can shot citcuit the charge, as the air will be moving slower. there is a timing calculation to figure the size range of each port Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted October 27, 2009 Report Share Posted October 27, 2009 PT High revs peaking at 7,500 rpm? I have several dyno sheets that put the PT mids peaking at over 8,000 rpm. So I hardly doubt the high rev was designed to peak at less rpm than than the high rev. i would think that the hi-revs would be good for 8800-9000. this is the place where i found the dyno sheet to the paul turner hi-revs. check out the dyno sheet here. not saying its right, but just where i found my previous info. sorry if what i had posted was wrong. http://www.angelfire.com/extreme2/yambanshee/techtips/pipes/pipeinfo.html Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted October 27, 2009 Report Share Posted October 27, 2009 (edited) Pro circuits peak at around 8,750rpm. I would guess the pt high revs peak at around 9,500rpm at the least. Edited October 27, 2009 by Snopczynski Quote Link to comment Share on other sites More sharing options...
SLORYDER Posted October 27, 2009 Author Report Share Posted October 27, 2009 Pro circuits peak at around 8,750rpm. I would guess the pt high revs peak at around 9,500rpm at the least. What's the rev limiter set at (stock)? Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted October 27, 2009 Report Share Posted October 27, 2009 Somewhere around 13,000 rpm. Quote Link to comment Share on other sites More sharing options...
SLORYDER Posted October 27, 2009 Author Report Share Posted October 27, 2009 Somewhere around 13,000 rpm. So. By raising the exhaust port roof, am I actually adding torque at the same peak location in the rpm range or am I leaving it the same and just shifting the torque peak higher in the range? Quote Link to comment Share on other sites More sharing options...
blowit Posted October 27, 2009 Report Share Posted October 27, 2009 So. By raising the exhaust port roof, am I actually adding torque at the same peak location in the rpm range or am I leaving it the same and just shifting the torque peak higher in the range? HP = torque * rpm/5252 Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted October 27, 2009 Report Share Posted October 27, 2009 Read the book. Quote Link to comment Share on other sites More sharing options...
SLORYDER Posted October 27, 2009 Author Report Share Posted October 27, 2009 HP = torque * rpm/5252 Exactly. So does performing this actually increse torque, or does it shift its peak higher in the rpm range? Both would result in an increase in hp. imo widening would raise peak torque and maybe shift the peak a bit raising would be more of a shift than a peak gain. Quote Link to comment Share on other sites More sharing options...
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