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Topic: Resonator Mod - worthwhile on Cat 3126 U295? (Read 1776 times) previous topic - next topic

Re: Resonator Mod - worthwhile on Cat 3126 U295?

Reply #25 –
Another factor that comes into play is the soot buildup and broken baffles in 20+ year old muffler.I plan to jump on the
resonator wagon probably with the 4" aero before next long trip.May go the stainless route.I did get on the Aero site and they
offer a black pipe wrap.
96 U270 BUILD 4810
85 380SL
Drummonds TN.
 

Re: Resonator Mod - worthwhile on Cat 3126 U295?

Reply #26 –
Turbo is a centrifugal fan and they suffer from system effect if you rapidly change sizes at the outlet. So if you want to increase pipe size leave about 12" of oulet size pipe and then increase size with a long 15 degree taper (optimal). Btw Donaldson has some PDF floating around that indicates exhaust cfm for many engines and lots of other good info on exhaust and intakes. Engine is an air pump, and benefits from low restrictions esp. Diesels. Inlet to intake side of turbo is also a good place for improvement and straight flow is optimal. Even a flow straightening grid may prove worthwhile.
Old Phart Phred, EIEIO
89 GV ored 36' #3405 300 hp cat 3208 ATAAC side radiator, mountain tamer exhaust brake