Is a muffler necessary (sound control) for a carbed ITC car?
Thanks,
Todd
Is a muffler necessary (sound control) for a carbed ITC car?
Thanks,
Todd
i run a 1st gen crx si (1488 cc) and have never needed anything except at waterford hills that has specific neighborhood requirements.
i typically run a 4-2-1 header with about 5-6 feet of straight pipe.
1985 CRX Si competed in Solo II: AS, CS, DS, GS
1986 CRX Si competed in: SCCA Solo II CSP, SCCA ITA, SCCA ITB, NASA H5
1988 CRX Si competed in ITA & STL
Thanks Tom,
My car is a former Waterford Hills car.
That explains the Cherry Bomb that was on it previously.
I've not seen a CRX yet that would break thr usual db levels here in the South.
Thanks again,
Todd
I have a 1st-gen carbed CRX and don't run a muffler. 4-2-1 header and 2" pipe to right side of car. It's loud but never been over limit.
Thanks Craig,
I plan to do the same except using 5-6 feet of flexible pipe, then 2-3 feet of straight pipe to come out the right side as well.
I think the flexible pipe will add a little back pressure and absorb some sound as well.
Todd
[font=Arial Black][b]Hey Gang:
the voice of experience says that ans ITC Honda CRX hit 108db at Road Atlanta several years ago - no muffler on the car & It had a 4 into one with a 2 1/2 tailpipe terminating behind the driver's seat with a turn down under the car!!! so beware, I'm currently running a 4 into 1 with a cherry bomb off a 2/12 in pipe to keep me below 103db which works very well - highest reading since adding cherry bomb was 99.8 db. Exhaust tuning had been done with tire crayon on new tailpipe, cutting pipe off 2" before melt stopped and adding a turn down.
Pushing sound limits isn't fun for anyone. Give our ears a break. It doesn't need to be street car quiet, but a small muffler or a cherry bomb probably doesn't hurt performance that much, is the lowest place for ballast, and makes life easier on the ears of your paddock-mates & track neighbors.
The more competitors run 100+ db, the sooner the tracks will be shut or forced to be waterford or laguna quiet.
i had a side exhaust for a while and went back to a turn-down.
at some tracks where i crowd the wall, i would hear my own exhaust and it would sound like i was being overtaken on that side.
pretty much a personal preference thing.
1985 CRX Si competed in Solo II: AS, CS, DS, GS
1986 CRX Si competed in: SCCA Solo II CSP, SCCA ITA, SCCA ITB, NASA H5
1988 CRX Si competed in ITA & STL
I am thinking of building my own exhaust, header back. 91 CRX Si for ITA.
I was going to follow roughly the same pattern as the OE exhaust with a muffler. The engine is currently OE but will be changed to a Bullet Engine in the future. What size pipe should I consider? Is it necessary to get it coated after it is assembled? Do I need any flex connectors or flanges? Is there a ‘build exhaust guide for dummies’ somewhere?
Chris Raffaelli
NER 24FP
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