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calaisturbo.com.au - Lowering Db Level *dodgy*

Started by creppervl · 1 Sept 2004 · 17 replies

Preserved from CalaisTurbo. Original authors and dates are shown; archived members are not current Holdcom accounts.

creppervlArchived member
Hey all, this q doesnt relate to my vl directly but i'm asking here because i'm sure alot of ppl here have had to deal with it. my mate has a very loud rx7 that is going over the pits soon, but we need to get the db level down. So far we've found two ways that we could do ourselves: 1- making up a baffle out of tin or something then inserting that in a join of the exhaust 2- stuffing steel wool up the muffler anyone have any suggestions? We like the baffle idea but need help as in what it is, how to make a simple one etc... any help would be so SO appreciated!!! cheers, Creeper Some original photos have not been recovered yet.
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platinumArchived member
baffle is the way to go. gonna be making one up for mine soon, just have to get the right bit of metal! Some original photos have not been recovered yet.
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JazzaArchived member
i have heard of people just using an exhaust flange and instead of having the big centre hole cut out, just a few holes are drilled in it instead it must do wonders for the flow lol but it should get you past the pits
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Psi_WagonArchived member
umm wouldnt steel wool ignite and blow huge amounts of flame and sparks out the exhaust!! hahaha ive heard stuffing a heap chicken wire up the exhaust lowers the db, wont help the flow tho :P very cheep to do also!
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JET-6Archived member
Easy, i know two good ways, 1st take one of the "cat" gaskets out and make a new 1 with only a few small hole and dont flog the car or it will blow out. 2nd get a coat hanger and steel scourer not steel wool, make a ball with the scourer and wrap the coat hanger around it, then put the coat hanger out straight and make a loop on the end and shove it up the exhuast, then when done get a torch and a hook and go fishing!
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creppervlArchived member
Coathanger idea sounds good, you could put it in easy around the corner form the centre then rip it out once licensed. Does it work well Jet? Does the ball have to pack up tight against the inside of the muffler as in to block it?? the cat gasket sounds good too, probly safer for exhaust.
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shredArchived member
ive had a flange put on the backend of my exhaust for the pits i remove the 2 1/2inch tail section an bolt up a 1 1/2 inch pipe with stock muffler this takes my 103 db system down to 87db same system took my 109db hx down to 89 any decent exhaust place should be able to do sumthin like this for ya cheap and most places have a db meter so u can leave the place with ur saviour pipe knowing that with it in place noise isnt gunna be a problem
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FATPSIArchived member
my mate took is extremily loud series 3 RX7 over the pits at burwood on tuesday, they didn't even start it
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JET-6Archived member
Yer make the ball a tight fit, its a good way ive done it twice, my old man used to do it all the time!
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platinumArchived member
hmm sounds interesting... so how much scourer do you use?
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BOOSTnWGnArchived member
A mate of mine just got chicken wire and roll it up really tight into a cylinder shape then shove it up the exhaust. Worked real good he recons. Love shreds flange Idea though. Easily unbolt 3 inch system and bolt on 2inch.
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JET-6Archived member
Gav 1 real big 1 will be fine!
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platinumArchived member
cool, be able to scrub the pots with it after. Some original photos have not been recovered yet.
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JET-6Archived member
Na Gav it'll be way to black then! lol
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shredArchived member
heh boostnwgn my 75$ flanged 1 1/2inch tailpipe has saved me 700$ on 2 occaisions now Some original photos have not been recovered yet.
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creppervlArchived member
hey jet, does the ball of steel method have potential to damage anything? I'd say not given youve used it ok before, but just wondering?
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JET-6Archived member
Na just dont flog your car while its in there! It will only blow out!
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creppervlArchived member
hahah nah i can imagine shooting a scourer/hanger device out the exhaust straight through someones car window. i'd only put it in just round the corner form the depot then limp it in, limp it out after and then out it comes. how much quieter does it really make it? I mean assuming this exhaust is pretty big (you guys know how loud rotas are). think itd pass?
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