My 914 is not OSHA compliant, Interior engine noise |
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My 914 is not OSHA compliant, Interior engine noise |
Coondog |
Nov 12 2019, 10:24 PM
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#1
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Advanced Member Group: Members Posts: 2,089 Joined: 24-September 15 From: Apple Valley Calif Member No.: 19,195 Region Association: Southern California |
OSHA says that noise over 85 dba requires a written hearing protection program.
Well I measured the sound level at 3000 RPM and I was at 87 dba. Running a 3.2 with Bens headers. Lots of free dba apps out there at no cost. Usually about +/- 1-2 error rate. OSHAs hearing protection rules say anything over 90 dba 8 hour TWA requires hearing protection. Of course these rules don’t apply to us but check out your sound measurements next time you take a drive........ (IMG:style_emoticons/default/driving.gif) Also know that 90 dba is twice as loud as 85dba. |
mepstein |
Nov 12 2019, 10:26 PM
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#2
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914-6 GT in waiting Group: Members Posts: 19,298 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
What do you have on your firewall and is that with the top off or the windows and top up?
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Coondog |
Nov 12 2019, 10:32 PM
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#3
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Advanced Member Group: Members Posts: 2,089 Joined: 24-September 15 From: Apple Valley Calif Member No.: 19,195 Region Association: Southern California |
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DRPHIL914 |
Nov 13 2019, 08:11 AM
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#4
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Dr. Phil Group: Members Posts: 5,767 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States |
What do you have on your firewall and is that with the top off or the windows and top up? RR interior firewall pad with 911 carpet. Engine side pad removed, windows up and top on. sorry I have to ask, who did the stitching on your seat inserts/ cushions and headrest pieces? looks awesome!( and center pieces) - i'd say if the top is on and windows are up , if you have a sound pad in engine compartment, that's all you can do sort of putting additional padding behind carpet. -that and your exhaust. is it carbs or injection? I know the muffler/header set up is going to make the biggest difference probably |
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