DanJ 374 Report post Posted August 26, 2017 New (not so) shiny bits to be fitted. Should sound much less tractor esque now 6 HariboPenguin, Rich, Deacon and 3 others reacted to this Share this post Link to post Share on other sites
TTR 509 Report post Posted August 26, 2017 17 minutes ago, DanJ said: New (not so) shiny bits to be fitted. Should sound much less tractor esque now Sent from my Nexus 5X using Tapatalk Gonna sound epic 1 DanJ reacted to this Share this post Link to post Share on other sites
DanJ 374 Report post Posted August 26, 2017 The new manifold may be ceramic coated but this extra heat shielding can't hurt. Good bit of cut and fold origami required to get it to fit nicely. 1 Deacon reacted to this Share this post Link to post Share on other sites
Tareim 343 Report post Posted August 26, 2017 what manifold is that? Share this post Link to post Share on other sites
DanJ 374 Report post Posted August 26, 2017 what manifold is that? Tomei UEL with Zircotec ceramic coating. Share this post Link to post Share on other sites
DanJ 374 Report post Posted August 26, 2017 Manifold in-situ: 3 Ade, Deacon and TTR reacted to this Share this post Link to post Share on other sites
Bfranklyn86 52 Report post Posted August 26, 2017 1 hour ago, DanJ said: The new manifold may be ceramic coated but this extra heat shielding can't hurt. Good bit of cut and fold origami required to get it to fit nicely. Sent from my Nexus 5X using Tapatalk Bite the bullet and get an oil cooler! (Or make one) Share this post Link to post Share on other sites
DanJ 374 Report post Posted August 26, 2017 1 hour ago, DanJ said: The new manifold may be ceramic coated but this extra heat shielding can't hurt. Good bit of cut and fold origami required to get it to fit nicely. Sent from my Nexus 5X using Tapatalk Bite the bullet and get an oil cooler! (Or make one) That's already in the plan, just need the time, manifold became a must have after Bedford finished the stock one off. Share this post Link to post Share on other sites
AJ124 118 Report post Posted August 26, 2017 @DanJ Are you running the stock second cat? Will be interested to see how loud yours is with the HKS cat back now. Share this post Link to post Share on other sites
DanJ 374 Report post Posted August 26, 2017 @DanJ Are you running the stock second cat? Will be interested to see how loud yours is with the HKS cat back now. No, got the Cobra HFC with the larger brick from Abbey. Will get it sound tested soon. It was 87.5db(A) static with the stock manifold, Cobra HFC and HKS catback. Subjectively it's pretty loud, but sounds superb. Share this post Link to post Share on other sites
Deacon 1357 Report post Posted August 26, 2017 3 minutes ago, DanJ said: No, got the Cobra HFC with the larger brick from Abbey. Will get it sound tested soon. It was 87.5db(A) static with the stock manifold, Cobra HFC and HKS catback. Subjectively it's pretty loud, but sounds superb. Mine was 83 at Bedford with the HKS and JDL catted uel manifold so also be interesting to see what yours is Share this post Link to post Share on other sites
AJ124 118 Report post Posted August 26, 2017 2 hours ago, DanJ said: No, got the Cobra HFC with the larger brick from Abbey. Will get it sound tested soon. It was 87.5db(A) static with the stock manifold, Cobra HFC and HKS catback. Subjectively it's pretty loud, but sounds superb. Same set up as me then(bar cat back), will be interested to know the db figure when you have it tested next. Share this post Link to post Share on other sites
DanJ 374 Report post Posted August 26, 2017 Will post up on here next time I get a reading. 1 AJ124 reacted to this Share this post Link to post Share on other sites
Mark@Abbey M/S 235 Report post Posted August 30, 2017 On 26/08/2017 at 10:58 AM, DanJ said: Those of you who were at Bedford in August will know that I left driving something akin to a tractor. It was definitely the manifold blowing but where from was the question? This is the offending article. It has failed right along the heat affected zone from the weld. Very poor design! seen this a few times on SC cars , seems it fails on the stress edge when the manifold parts where stamped They only fail on Charged cars not on NA cars 1 Rich reacted to this Share this post Link to post Share on other sites
DanJ 374 Report post Posted September 22, 2017 Little bit of an update before I bugger off on holiday. The new exhaust setup measured 90dB using @Steeps noise meter so should be okay for most tracks, although a bit nervous about driveby at Bedford after @will300's recent experience, time will tell... The Team Dynamics wheels I ordered as "track" wheels back in April finally turned up yesterday, they've been shod in a set of PS4s today and will go on for the winter and be for wet track days. Didn't have time to seal them today (not making the mistake of not sealing wheels again!) so will do that when I'm back and get the Ultraleggeras sent off for a refurb. 1 Deacon reacted to this Share this post Link to post Share on other sites
Steeps 294 Report post Posted September 22, 2017 Mine registered 90dB too but bedford still told me it was 95, so should be fine for static testing anyway at most circuits. Could possibly try setting up a driveby noise test if we know roughly what distance it's expected to be at and we find a quiet bit of road. Share this post Link to post Share on other sites
DanJ 374 Report post Posted September 22, 2017 We could try again at the Fox and Hounds in Whittlebury for the next meet and then use the circuit perimeter road at Silverstone for a test. It'll be pretty quiet most weekends now. Share this post Link to post Share on other sites
Lauren 2259 Report post Posted September 22, 2017 30 minutes ago, Steeps said: Mine registered 90dB too but bedford still told me it was 95, so should be fine for static testing anyway at most circuits. Could possibly try setting up a driveby noise test if we know roughly what distance it's expected to be at and we find a quiet bit of road. It seems that a lot of circuits are doing away with the largely pointless static tests and just doing driveway. This makes more sense. Bedford is pretty low though. I'd base on the 98Db of Donington which is more realistic. I passed that with a TD EL manifold, resonated exhaust and no cats. Share this post Link to post Share on other sites
Mike 458 Report post Posted September 22, 2017 Is there a standard (in terms of measuring) for drive by? Share this post Link to post Share on other sites
Bfranklyn86 52 Report post Posted September 22, 2017 Have you had a retune for the new exhaust setup yet? Share this post Link to post Share on other sites
Lauren 2259 Report post Posted September 22, 2017 13 minutes ago, Mike said: Is there a standard (in terms of measuring) for drive by? There doesn't seem to be. But pick a track like Donington which is notoriously strict on it's noise limits. The way I see it, as I passed that, I don't particularly have to worry about anywhere else. Bedford might be an issue, but I'm none too worried about that one really. So it really seems there is only one way to find out really. The laughable thing is, I was told at Angers that they just do driveby now. I asked the marshall what the limit was, he said he didn't know, but said I wouldn't have a problem. Share this post Link to post Share on other sites
Mike 458 Report post Posted September 22, 2017 Is Donington strict with measurement or just enforcing? I know at Donington you wouldn't take a chance but if it's limit is high then it's not a good benchmark Share this post Link to post Share on other sites
DanJ 374 Report post Posted September 23, 2017 I agree that static tests are useless in terms of actual on circuit noise, but they're a much more reliable / repeatable test to give someone an idea if they're going to be borderline or way over the limit before they head out on track. I'm not aware of any standardised procedure for driveby tests, several circuits specify it being measured at 20 metres but not all do, it'll be very dependent on meter location, wind direction and atmospherics on the day, your particular driving style / shift up/down points for your car etc etc. At Formula Student in July we were measuring 80dB(a) purely in background noise due to the wind! 11 hours ago, Bfranklyn86 said: Have you had a retune for the new exhaust setup yet? I'm booked in for the 10th October at Abbey for a remap. Share this post Link to post Share on other sites
Lauren 2259 Report post Posted September 23, 2017 12 hours ago, Mike said: Is Donington strict with measurement or just enforcing? I know at Donington you wouldn't take a chance but if it's limit is high then it's not a good benchmark I used to work on the pitlane at Donington and there was no flexibility if a car went over the noise limits, so they are strict. 98Db driveby is not high, it's indicative of tracks that are on the lower side of noise limits. High would be 105Db. Share this post Link to post Share on other sites
Bfranklyn86 52 Report post Posted September 23, 2017 It's because of all this that I will be keeping the stock catback. I don't want to be going anywhere near any noise limits - just don't want to worry about it. Share this post Link to post Share on other sites