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Re: Will straight pipe hurt motors??
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Posted by Mark - IN. on October 14, 2005 at 20:29:08 from (152.163.101.7):
In Reply to: Re: Will straight pipe hurt motors?? posted by txgrn on October 14, 2005 at 06:01:38:
Hey ya Mark, good to hear from you. Hope all is well in Texas. Been quiet from there. I agree with you on the deisel 100%. Short and fat and scavenge (dump). Is why GM put roots type blowers on the exhaust side of their deisels long before turbos even existed to put on the intake side. And long before anyone realized if reverse the gearing in a roots blower, stick it on top of a top fuel or alcohol engine, can use it's exhaust as intake (reverse the air flow), and use it to boost the pressure into the cylinders and run a 1/4 mile in 4 seconds. Fun, fun, fun. Idea setup for a deisel is a turbo blowing in, and a roots sucking out, no pipe. But makes the everything black with soot, so nice overly fat chrome pipe, no muffler to restrict. Same for naturally aspirated, short, fat, even better if none and don't mind a blackened face. Gasoline is different - gain torque with longer, smaller diameter pipes to a point. But has to be tuned for the needs, which no one can do by saying "looks good, sounds good, must be at least 2 more HP". Might be +2. Might be +5. Might be -10. Statistically, the latter happens the most when dyno'd. Great to hear from you Mark. Been busy, huh? Is that time of year. Mark
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