Bigboystoys
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| posted on 3/5/11 at 09:32 PM |
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Exhaust noise
Hi all hope everyone has had a nice bank holiday weekend and this morning wasn't too much of a shock to the system.
I have a question for the Bec side of this forum. I'm running a gsxr 1000 engine in my kit with a lovely 4 branch ss manifold down to a ss art
can with a removable spout baffle or db killer as they are known. My question is what are other people using in terms of silencer. Mine sounds lovely
in the lower rpm but when it gets up to the cruising side of things it's still so noisy. My can has a 50mm inlet. Any ideas and thoughts much
appreciated.
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snapper
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| posted on 3/5/11 at 09:48 PM |
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A few other Chelmsford boys are running exhausts made by 907 aka Paul Gooderham (google for web site) he will make to order and they look loverly.
We meet last Sunday of the month at Checkers diner Montrose road
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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Bigboystoys
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| posted on 3/5/11 at 10:02 PM |
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Ahh will have a look during the work t break tomorrow. Not exactly sure where that is to be honest. Moved to Chelmsford from benfleet just before
Christmas so still finding me paths lol
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daniel mason
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| posted on 3/5/11 at 10:12 PM |
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the bike silencers are fairly quiet! what diff are you running. that makes a big diffrence at motorway speeds. it would be quieter with 3.38 than a
3.62 when sat at 70 mph.
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Bigboystoys
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| posted on 3/5/11 at 10:19 PM |
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At this second I'm running a 3.89 but in the middle of building up a 3.44. Just welding up the brackets for the trailing arms and shock mounts.
Complete this weekend fingers crossed. The exhaust at the moment is a race can with just a spout baffle fitted.
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dhutch
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| posted on 4/5/11 at 07:41 AM |
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Im running a Paul Gooderham can on the field with a 1900cvh, went for the largest i could comfortably fit (6inch*712mm as i recall) and i have to say
although it looks cracking it still a little louder than i was hoping. not got a db reading on it and its certainly less than the origanal 4inch by
600ish but then again that was 107db and i was hopinh to be safe for 85db limit days and to be able to talk to my passenger (all be it raised voices
im sure) at 60-70ish, comfortable chat at 40.
Not sure, everyone says wunoff are very quiet, but no experince of this. I guess its down to the perf tube and can wall used as well as the filling.
Although i know paul advertises he uses acustafil which is ment to be the best, so i assume its not that.
Daniel
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Bigboystoys
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| posted on 4/5/11 at 07:46 AM |
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That sounds a lot better, I can't talk to anyone much above 40mph. Will have to have a look on the net. Thanks for the help
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coyoteboy
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| posted on 4/5/11 at 10:21 AM |
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I can't understand why you'd want to talk to anyone much over 40mph, it's not a shopping car 
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Hellfire
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| posted on 4/5/11 at 11:26 AM |
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The quietness of the exhaust is always a trade off with power IME. Wear earplugs if you want to quieten the exhaust or fit an intercom if you want to
chat to your passenger above 40mph. Or if you're happy to lose some performance, fit a standard exhaust can off a ZX12R or R1
Phil
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dhutch
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| posted on 4/5/11 at 09:20 PM |
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quote:
Originally posted by Bigboystoys
That sounds a lot better, I can't talk to anyone much above 40mph. Will have to have a look on the net. Thanks for the help
Yeah, this
is currently the case for me, as i say 'aiming for' im not there yet. :/
I have earplugs (google 'etymotic research' which is a good solution for one, but not two people, or trackdays.
Daniel
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