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6 Oct 2009, 17:32 (Ref:2555328) | #1 | |||
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Noise Testing
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Grrrrrrr |
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6 Oct 2009, 17:42 (Ref:2555336) | #2 | ||
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At most circuits it's not permissible for race engines to be started until well after scrutineering commences.
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6 Oct 2009, 17:48 (Ref:2555340) | #3 | ||
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Two reason maybe, 1, you're supposed to present a car with a cold engine for scrutineering and who would want to rev the nuts off a cold engine? 2, so you can't go back and change anything after the noise test.
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6 Oct 2009, 21:13 (Ref:2555463) | #4 | |
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But if you changed anything the drive-by check would catch you out anyway (probably). It seems noise testing is quite a lottery regardless of when/where it's done.
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6 Oct 2009, 21:25 (Ref:2555471) | #5 | ||
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103db at Brands, 104.5db at Rockingham and 107db at Mallory on Sunday and warned and quite as a roadcar driving past as it has a big air filter, work it out!
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7 Oct 2009, 08:02 (Ref:2555683) | #6 | ||
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Why not do it immediately after scrutineering on the way back to the paddock. At least it gives the people who fail a chance to rectify. Plenty of people drive their cars to scrutineering and go through with a hot engine. If people knew they were going to be tested immediately after there car had been checked they would know to warm up before they set off.
Sitting in a que of 20 cars with the temperature guage off the clock watching steam pouring out of your car isnt fun. If it has to be done at the collecting area why not have 2 testers to speed things up? |
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7 Oct 2009, 08:03 (Ref:2555684) | #7 | ||
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Looks like I'm echoing Rogers point........should not be to hasty!
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7 Oct 2009, 08:18 (Ref:2555694) | #8 | ||
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Rogers correct they do the noise testing at Castle Combe after Scruitineering.
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7 Oct 2009, 08:36 (Ref:2555703) | #9 | ||
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For all race meetings its your organising club who determine when and where the environmental scrutineer chooses to do testing.
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7 Oct 2009, 09:00 (Ref:2555715) | #10 | ||
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7 Oct 2009, 09:03 (Ref:2555719) | #11 | ||
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7 Oct 2009, 09:06 (Ref:2555722) | #12 | ||
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That's no problem if you passed yesterday and made no changes. Worst part about doing it in the collecting area is you get sound bouncing back off other cars/background noise etc. Was once told my everyday road/sprint car was "marginal", normally 85dba, I was parked next to a Locaterfield thingy with a side exhaust warming up right next to my car LOL.
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7 Oct 2009, 09:13 (Ref:2555733) | #13 | |||
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7 Oct 2009, 09:20 (Ref:2555739) | #14 | ||
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We've all been there before and have "harped" on about it on various threads over the years. We all know its a lottery on the day at various tracks and I don't think that there is any short answer.
As an aside I had my car fail at Coombe ( I know its the worst) I took it back an hour later and it was 1db under. What had I done ? Nothing ! |
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7 Oct 2009, 11:49 (Ref:2555830) | #15 | ||
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I can tell you a trick ,don't know why it works maybe there is a boffin out there who can enlighten me. You fail a noise test OK. Back to the Van, truck or what ever find a piece of steel plate 14 gauge or something close,Just cut the plate so that you can fit it in the end of exhaust pipe a couple of inch's deep,so you are now splitting the exhaust into two halves. Back for a noise test and 9 times out of 10 this has worked for me and others Ive helped in the past.
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7 Oct 2009, 13:00 (Ref:2555873) | #16 | ||
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Yes they were testing in the assembly area Tim and right next to a wall which is probably OK for rear exiting exhausts but as mine side exit I would imagine reflected off the wall increasing the noise, also there was a race on at the time with cars streaking past and other cars behind me with their engines running, hardly scientific.
The best was Lydden although the thing passed no problem at 103db. They pull you up after qually and my engine was smoking a tad as some oil had spilt out and I did not want to rev up the hot engine there and then without checking it and he started to get a bit bulshie with me when I said i want to pull over, shut down and let her cool off for five minutes and check out the problem. I did this and he was OK after that. |
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7 Oct 2009, 13:50 (Ref:2555896) | #17 | ||
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I know one Yank Tank owner (who shall remain nameless) that had a switch in the car that cut out a few cylinders for noise testing !
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Balls of steel (knob of butter) They're Asking For Larkins. ( Proper beer) not you're Eurofizz crap. Hace más calor en España. Me han conocido a hablar un montón cojones! Send any cheques and cash to PO box 1 Lagos Nigeria Africa ! |
7 Oct 2009, 15:51 (Ref:2555965) | #18 | ||
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Midgetman - known as Max Tyler to the world. MaxAttaq! |
7 Oct 2009, 16:10 (Ref:2555986) | #19 | |||
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Actually I am going to redo the system as I am fed up with it grounding out especially at Brands and it was at Mallory at the foot of the elbow so I will try to get it quieter. |
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7 Oct 2009, 20:47 (Ref:2556174) | #20 | ||
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Balls of steel (knob of butter) They're Asking For Larkins. ( Proper beer) not you're Eurofizz crap. Hace más calor en España. Me han conocido a hablar un montón cojones! Send any cheques and cash to PO box 1 Lagos Nigeria Africa ! |
8 Oct 2009, 01:31 (Ref:2556301) | #21 | ||
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Talk to Kevin at Zero Exhausts. Unless I'm mistaken he's already done a set of headers and exhaust for Max Rostron's Camaro so he might have an off the shelf stainless system already.
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