prince rupert Posted September 16, 2007 Share Posted September 16, 2007 Looking at a Fireblade 7 with a std 7" Caterham silencer, ie non repackable. Any issues with noise on exhaust side. Thinking for track at Anglesey and Oulton and Cadwell, not worried about <98db trackdays in the short term. Regards Rupert Link to comment Share on other sites More sharing options...
Howard R Posted September 16, 2007 Share Posted September 16, 2007 Prince Rupert (or Richard 🤔 😳 ❗) If the 7" silencer is in good condition it should just be ok at 105 db - think how small the silencer is on the Honda Fireblade bike 😶🌫️ Green Fireblade Pilot Link to comment Share on other sites More sharing options...
Ray Gamma Posted September 17, 2007 Share Posted September 17, 2007 5 year old standard Caterham silencer. 103db @ 6,500 static ☹️ I'll be off to see ammo when the director of finances allows Link to comment Share on other sites More sharing options...
prince rupert Posted September 17, 2007 Author Share Posted September 17, 2007 Thanks Howard and Ray. Regards Rupert Link to comment Share on other sites More sharing options...
nickaddison Posted September 18, 2007 Share Posted September 18, 2007 My original un-repackable exhaust at 3 years old was 109 Up to that point the only track days that I had done were in France on Le Sept where they aren't/weren't too bothered Hence replacing it with a Good Fabrications one 2 years ago, which is around 98db FireBlade pilot and Regalia Manager Link to comment Share on other sites More sharing options...
Atinod Posted September 18, 2007 Share Posted September 18, 2007 I went the same route as Nick and had similar db readings! It might be possible to get the standard silencer adapted so that it can be re-packed, as a cheaper option, if you have a metalwork place locally? The GF box was larger though. Link to comment Share on other sites More sharing options...
Ray Gamma Posted September 18, 2007 Share Posted September 18, 2007 What's the ball park cost of a GF silencer? Any piccys??? Cheers Rob Edited by - Ray Gamma on 18 Sep 2007 20:49:48 Link to comment Share on other sites More sharing options...
prince rupert Posted September 18, 2007 Author Share Posted September 18, 2007 I've emailed them and await a reply, maybe a bulk buy (well 2 ) in the offing! Rupert Link to comment Share on other sites More sharing options...
northernmonkey Posted March 15, 2010 Share Posted March 15, 2010 HI all - Thought I'd tag this on an old thread... Failed a noise test at a track day last Friday: 100-102db @ 6,000 static 😔 Exhaust is (i think) a standard non packable exhaust - Any recommendations on what exhaust to go for? Don't want the new exhaust to cause me problems when I take the car to JW for 'MOT' Ta! Link to comment Share on other sites More sharing options...
Andrew Walker Posted March 15, 2010 Share Posted March 15, 2010 Good Fabrications are in Thame - so not far from Oxford. I would suggest you have a word with JW first, vis-a-vis MOT etc.. Link to comment Share on other sites More sharing options...
Blue-Lines Posted March 15, 2010 Share Posted March 15, 2010 Hello. I too am looking at "upgrading" my Blade exhaust. I need to fit a cat in the system in order to comply with the MSA reg's and allow me to dabble in the Speed Championship this year. I sent James Whiting an email last night about this and he pointed me in the direction of Good Fab's as well. Their exhausts look well made and are supposed to significantly reduce noise. However, the cans with integral cat's fitted look massive, to the extent that I bet a fair bit my exhaust primaries would need chopping to fit. I don’t much fancy butchering my exhaust primaries as I am sure they are of an optimal design!! Any Blade/Bird/Busa owners got any experience of fitting an exhaust with an integral cat? I believe Powerspeed might be able to engineer a solution but these guys are a fair old drive from mine. Reluctant to fit something that will sap power and require a re-tune but I bought the car to do sprint so I guess what is needed is needed! Edited by - Blue-Lines on 15 Mar 2010 18:56:36 Link to comment Share on other sites More sharing options...
Atinod Posted March 15, 2010 Share Posted March 15, 2010 Hi Blue-Lines, As you can see from my earlier post, I had Good Fabs make my new 'blade [non cat] silencer for me. Since then, I have had Powerspeed make a silencer [with cat] for my 'busa [along with the full rear exit system actually]. Both are great but..... Good Fabs use a very simple and clever coupling at the primaries end, which allows you to offer up the silencer from the side [you only need around 20mm horizontally to play with] It is rather like two large washers, one with a raised ring and the other with a rebate; once slipped together they clamp in place. This means that Good Fabs can make a longer silencer before they need to consider cutting the primaries [i.e. the flared ends are not required] Does that help James Edited by - Atinod on 15 Mar 2010 20:31:11 Link to comment Share on other sites More sharing options...
Grubbster Posted March 15, 2010 Share Posted March 15, 2010 And James - that exhaust on the 'blade dropped it to below 90 db(a) IIRC - nearly as quiet as the rear ext system on the 'busa - both very remarkable! Solent Se7ens Web! Link to comment Share on other sites More sharing options...
northernmonkey Posted March 16, 2010 Share Posted March 16, 2010 It would be great to have a cat fitted to the car but it was my understanding that the remapping that would need to be done was the 🙆🏻 - Even with a cat fitted I guess it's not guaranteed to pass MOT? Bulk buy anyone? Link to comment Share on other sites More sharing options...
Blue-Lines Posted March 16, 2010 Share Posted March 16, 2010 Atinod, thanks for the info. Less than 90db, dont want my car to sound too much like a buzzing hairdryer 😬 Chazsnell, I have had a dig through the forums and I believe a previous Blade owner has fitted a Good Fab's exhaust with an integral cat. I will drop him an email to hear what his thoughts/experience was re: tuning etc. Link to comment Share on other sites More sharing options...
blade_runner Posted March 16, 2010 Share Posted March 16, 2010 My standard Caterham fireblade silencer ( i think its the same spec as a blackbird) was measured at 104 dB at snetterton... I popped and saw Ammo he measured it up and made me a Nice Titanium Raceco one and I was noise tested at Bedford at 91.7 dB I'm very happy with it... the only problem is now the car is quieter you hear other noises like the Diff! 'Pinky Pics' here incar vids Link to comment Share on other sites More sharing options...
CaterBram Posted March 16, 2010 Share Posted March 16, 2010 Slightly off topic, but 12db reduction, hope I can get anything near that when I get my Raceco fitted next week to my XFlow. Q469 WET, 1990 Caterham 1690 Crossflow Long Cockpit in Ali except for the red bits. We are doing Yorkshire 3 Peaks in aid of Rotherham Hospice Edited by - CaterBram Jnr on 16 Mar 2010 21:33:06 Link to comment Share on other sites More sharing options...
Quenton Fyfe Posted March 17, 2010 Share Posted March 17, 2010 I have a (large) Raceco one on my Fireblade - and it's great. Still loads of engine noise inside the car - but it's very quiet outside - you really notice it on videos, it's one of the quietest cars on the track. Sorry, no idea about measurements - they don't seem to bother with them at Knockhill - but I'd be pretty confident to go to most tracks with it. Link to comment Share on other sites More sharing options...
u01rsb Posted March 17, 2010 Share Posted March 17, 2010 Regs regarding CAT do not state that it must be fitted in exhaust path. At a sprint last year I saw one competitor fit one to his roll bar in order to comply. No remapping was required . Anyway, an intergrated one in the silencer would be your best option, re-mapping on a rolling road would be a good idea to minimise losses.. Rob Link to comment Share on other sites More sharing options...
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