52concord Posted March 29, 2013 Report Posted March 29, 2013 so i have a 218 with reds headers and dual 1 1/2 in piping with one side straight piped and other with a glasspack, for some reason i get this sound coming outta the exhaust tips, sound like a exhaust leak around 500rpm but once you rev it the sound goes away but comes back once the rpms come down. also sounds like when you put your hand near the exhaust tip it makes like a swooshing noise sounds kinda like that. it pretty much only happens at idle. any idea what it could be? Quote
Don Coatney Posted March 29, 2013 Report Posted March 29, 2013 From your description it is hard to tell. Does it sound like a flutter blast, or a flooper, or perhaps a freep? Do the tips make it sound like a whiffel or does it sound more like a sliffer, a fudgie, trelblow, or a plocher? Anyway you can record it? Quote
Merle Coggins Posted March 29, 2013 Report Posted March 29, 2013 Don, did you write for Dr. Seuss? Quote
52concord Posted March 29, 2013 Author Report Posted March 29, 2013 just recorded it hopefully it explains it better the sounds is loudest usually when the rpms go down and at idle. i also tried different tips from turndowns to pencil tips to side exits and it was all the same Quote
BigDaddyO Posted March 29, 2013 Report Posted March 29, 2013 That is a bad muffler bearing if I ever heard one. Quote
greg g Posted March 29, 2013 Report Posted March 29, 2013 John Deere with a hernia? Were it me I would glass pack both sides. But that's just me. Quote
RobertKB Posted March 29, 2013 Report Posted March 29, 2013 Car may be running too rich. If your carb is getting too much gas it can sound like that. Lean it out a bit and see what happens. Adjustment screw is on the side of the carb.................not the idle speed screw. Quote
BobT-47P15 Posted March 29, 2013 Report Posted March 29, 2013 It would seem to me you gonna get a differnt sound from the straight pipe side than the one with the muffer. It sounds like some of that cackle kinda sound you get with no muffler....when the engine winds back down. I'd bet using a second muffler would cure it. Quote
52concord Posted March 29, 2013 Author Report Posted March 29, 2013 (edited) well the thing is that the noise is coming from both pipes, so i doubt its the glass pack causing it or the straight pipe causing it right? i like the cackle its just the air sound that sounds horrible at idle Edited March 29, 2013 by 52concord Quote
Don Coatney Posted March 30, 2013 Report Posted March 30, 2013 Don, did you write for Dr. Seuss? Nope, I wrote for Paul Boomer and Lord Whinderschmere Quote
Dave72dt Posted March 30, 2013 Report Posted March 30, 2013 Kind of sounds like a pipe is hitting the frame somewhere. If not, an H pipe in the system may balance the sounds out. Quote
Don Jordan Posted March 30, 2013 Report Posted March 30, 2013 Could that be it? Bad harmonicas? I don't know if it's a flutter, flooper, or freep but I do know the technology is fabulous. How do you do that? What a great tool for getting sounds across. I've been so slow in embracing the 21st century. Quote
T120 Posted March 30, 2013 Report Posted March 30, 2013 Kinda sounds like a sustained flutter blast..I'd try Greg's suggestion and go for dual glass packs Quote
Plymouthy Adams Posted March 30, 2013 Report Posted March 30, 2013 you pipes are not tuned..more to duals than running pipes to the rear..balance is everything including equal length pipes..also your pipes are not beyond the bumper..(bad sound and also not good for the undercarriage and bumper either)..and straight cut pipe often has a bad sound..try a bologna slice Quote
52concord Posted April 3, 2013 Author Report Posted April 3, 2013 so i ended up putting another glasspack and same thing, i even slashed the tips. Quote
Mark D Posted April 4, 2013 Report Posted April 4, 2013 I've got the same setup on my car, with a 28" Smithy on each side. I've decided to replace them with a quieter conventional muffler. The Braaaap, sput, sput, sput, is just too loud for the glamour of this car. Quote
greg g Posted April 4, 2013 Report Posted April 4, 2013 (edited) Mark, see if you can locate some Dyna Max turboflows. they are about the same size as the stock muffler, they talk a bit under load then quiet down at cruise. Not expensive, I think I got mine for 30 bucks at pepboyz. http://www.summitracing.com/search/brand/dynomax-performance/part-type/mufflers/product-line/thrush-turbo-mufflers?autoview=SKU Edited April 4, 2013 by greg g 1 Quote
T120 Posted April 7, 2013 Report Posted April 7, 2013 Don Coatney supplied this info on Fenton headers installation (see link).Noticed step 18 suggests some adjustment of tuning the engine after installation... http://mopar.pairserver.com/p15d24ph_forum/index.php?/topic/1875-fenton-headers-original-fitting-instructions/?hl=%2Bfenton+%2Bheaders#entry14200 1 Quote
Mark D Posted April 7, 2013 Report Posted April 7, 2013 Greg - that's exactly what I ordered! They'll be on my front porch when I get back from LA this weekend. If my carbs arrive from Geo Asche, I'll have to find some time Friday night to spend some time in the garage. Mark, see if you can locate some Dyna Max turboflows. they are about the same size as the stock muffler, they talk a bit under load then quiet down at cruise. Not expensive, I think I got mine for 30 bucks at pepboyz. http://www.summitracing.com/search/brand/dynomax-performance/part-type/mufflers/product-line/thrush-turbo-mufflers?autoview=SKU Quote
Don Coatney Posted April 8, 2013 Report Posted April 8, 2013 Don Coatney supplied this info on Fenton headers installation (see link).Noticed step 18 suggests some adjustment of tuning the engine after installation... http://mopar.pairserver.com/p15d24ph_forum/index.php?/topic/1875-fenton-headers-original-fitting-instructions/?hl=%2Bfenton+%2Bheaders#entry14200 Thank you, I forgot I had posted that information. Quote
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