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#1. Laguna Seca noise... - from Jeremy Conners
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Date: Wed, 31 Oct 2001 12:39:52 -0500 From: "Jeremy Conners" <Jeremy.Conners@compdevsys.com> Subject: Laguna Seca noise... From my knowledge of SPL, if you were to deflect the exhaust away from the SPL meter (assuming there is only one) you should improve on the perceived SPL where it is measured. Jeff Stowe made a good point about the DTM tips v. the straight tips failing and not failing, respectively. This is probably due to the location of the SPL meter and the direction of sound pressure with respect to each other. Also a good point was made about modifying your line to get as far away from the SPL meter as possible. Remember that the dB scale is logarithmic and that doubling your distance (in theory) will decrease the dB reading by 6 dB. Of course this is in a "free-field" with no reverb, etc... I think that one could rig an exhaust deflector with a pop can on each tip held on with a hose clamp to deflect the waves in an appropriate direction. One might cut the side from the can and leave the bottom portion to allow the waves to be deflected in any direction orthogonal to the tip axis by rotating the pop can. Of course this is just an idea but may it spawn a nice "work-around" for this problem. I can recall a few years ago during the 1998 Formula SAE event that DQ's during the acceleration event were a big problem due to SPL. RIT had big trouble and went to the parking lot to remove a super turbo muffler from one of their team member's cars...what an interesting setup in the name of desperation. Of course the rules were significantly changed the following year... Good luck and remember if you can't win legally... Jeremy Conners
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#2. RE: Armrest/ASC Solutions? - from Dan Hermann
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Date: Wed, 31 Oct 2001 11:33:03 -0600 From: "Dan Hermann" <dah328@hotmail.com> Subject: RE: Armrest/ASC Solutions? Jonathan wrote: >>Also, my ASC light hasn't worked for months. The ASC itself works fine, >>it's just the light that never works. Therefore, I often forget if I've >>turned it off or not and I don't want to deal with that at the track. How >>would one go about disabling or disconnecting the ASC aside from the >>button? At least I know the orange light won't become annoying. ;)<< perhaps a silly question, but does the check engine light and the other lights along the bottom of the instrument cluster work? on my 96 M3, they're all on the same fuse which has gone out a number of times. i probably have an intermittent short somewhere in my instrument cluster. :( dan 96 M3 _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
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#3. Re: [E36M3] Supersprint (was Re: Laguna Seca noise limits update) - from Ron Buchalski
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Date: Wed, 31 Oct 2001 17:45:43 From: "Ron Buchalski" <rbuchals@hotmail.com> Subject: Re: [E36M3] Supersprint (was Re: Laguna Seca noise limits update) Thanks for the sanity check, Chester. On that note, did the factory exhaust move? I never bothered to notice. -rb >From: Chester Wong <chester_p_wong@yahoo.com> >To: Ron Buchalski <rbuchals@hotmail.com>, E36M3 <e36m3@bmw-m.net> >Subject: Re: [E36M3] Supersprint (was Re: Laguna Seca noise limits update) >Date: Wed, 31 Oct 2001 07:27:07 -0800 (PST) > > > When we installed it (cold), it was aligned with the tips centered >between > > the edges of the bumper opening (not the rearmost edges of the opening, >but > > the most forward edges of the opening). After driving the car, I found >that > > the tips shifted to the left (while the exhaust was hot). As it cooled, >the > > tips shifted back toward the right. Right now, when it's completely >cold, > > the tips are about 1/8" from the right, and 1/4" from the left, so it's > > slightly off-center. When fully heated, it will shift about 1/4" to the > > left (to just touch the left edge of the opening). > > > > Does your exhaust do this? > >Yup. I have a gen III AA exhaust on my car. It does this too. I think it >has >something to do with the unequal length of the pipes. The longer one is >the >passenger side one so as it heats and expands, it pushes the tips to the >left. > >Chester > >===== > > >__________________________________________________ >Do You Yahoo!? >Make a great connection at Yahoo! Personals. >http://personals.yahoo.com _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
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#4. some stuff for sale - from kitwetzler@mindspring.com
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Date: Wed, 31 Oct 2001 12:57:07 -0500 From: "kitwetzler@mindspring.com" <kitwetzler@mindspring.com> Subject: some stuff for sale Anyone interested in: Speedware motorsports Harness Bar $350 Sparco Sprint seat $250 (includes bracket to bolt into M3 2 or 4 door) Sparco 4 3" H-style camlock harness $100 (includes eye bolts to replace rear seat anchor bolts to allow harnesses to snap in and brackets for the lap belt) $1000 new! Buy all 3 for $650. Will not ship, must be bay area buyer. The Harness bar won't fit a 2 door. the seat and harnesses will. (more stuff to come) -kit -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.com/ .
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#5. [E36M3] Where's the fan? - from twisty M3
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Date: Wed, 31 Oct 2001 10:02:11 -0800 From: "twisty M3" <twistym3@hotmail.com> Subject: [E36M3] Where's the fan? After having my belts replaced at my last service, I've noticed that the climate control fan basically seems to have a mind of it's own. It seems to only be a mild blow (pardon my language) coming from the vents at any given time... No matter how high I try to turn it up. The bars on the LED readout will go up and down based on temp, but the airflow doesn't seem to change much, if at all, and you can't even hear the fan winding up or down (which would at least lead me to believe it was blocked up). This is the same with all the vents (including front window defogger). It will occassionally go back to normal functioning for short periods, but it's otherwise useless right now. The mechanic just told me that the belt change wouldn't have anything to do with it, but it sure seems like a pretty huge coincidence to me, as it worked fine before I got there, but stopped working properly after. Because you can't even hear the fan working harder, and because it does blow hard (no offense) on the rare occassion that it does turn up, I can only assume that it's not the microfilter or any othe type of blockage. Planning on taking it in Friday afternoon to be looked at, but I'd rather fix it myself if possible and buy myself some good food and maybe a couple of drinks Friday night than to help my mechanic buy his next car. ;) Thanks for any help, Jonathan _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
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#6. Re: [E36M3] RE: Armrest/ASC Solutions? - from twisty M3
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Date: Wed, 31 Oct 2001 10:05:44 -0800 From: "twisty M3" <twistym3@hotmail.com> Subject: Re: [E36M3] RE: Armrest/ASC Solutions? I actually assume that it's a fidgety light bulb. All the other lights on the instrument cluster seem to work fine. The ASC light will turn on once in a while, can be turned off/on with the switch, but won't work again after I shut the car off/turn it back on. The ASC system works fine though, as do the other lights. I'd guess it's the bulb or an intermittent short in the ASC switch only. Odd indeed! Jonathan L. >From: "Dan Hermann" <dah328@hotmail.com> > >perhaps a silly question, but does the check engine light and the other >lights along the bottom of the instrument cluster work? on my 96 M3, >they're all on the same fuse which has gone out a number of times. i >probably have an intermittent short somewhere in my instrument cluster. :( > >dan >96 M3 > _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
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#7. RE: [E36M3] explanation of service lights - from jim.bassett@alloptic.com
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Date: Wed, 31 Oct 2001 10:19:19 -0800 From: jim.bassett@alloptic.com Subject: RE: [E36M3] explanation of service lights > I'm trying to figure out the oil service light. The green > indicator > lights on the dash tick off, indicating a need for service > somewhere in the > 10k range with my driving. My oil service light does not come > on until all > of these lights have ticked off. Yep, that is correct. > If I paid > attention to this, > I wouldn't be changing my oil but once a year? You only drive 10K/year? Dude, you need to get out and drive more <bg>. > Do I have a > faulty sensor in > my '99, or does BMW expect the typical yuppie to only have > their oil changed > on this prolonged interval? Thanks for you help. 10K intervals are no problem for today's oils. However, there's nothing stopping you from changing the oil as often as you like. Personally, I changed my oil halfway through the lights or about every 4500 miles. But then, the car saw a LOT of track time and had a 100-mile roundtrip commute. Now that the car is retired from the track and my commute is half as long, I'll probably just follow the SI lights. Hope that helps, Jim Bassett 1998 M3/4 1993 325is #44 KP
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#8. Re: [E36M3] Supersprint (was Re: Laguna Seca noise limits update) - from Chester Wong
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Date: Wed, 31 Oct 2001 10:30:21 -0800 (PST) From: Chester Wong <chester_p_wong@yahoo.com> Subject: Re: [E36M3] Supersprint (was Re: Laguna Seca noise limits update) AFAIK, the stock exhaust didn't move. Perhaps it's because the stock exhaust is double walled. Supposedly (I haven't cut one up to confirm), there is some weird stuff crammed in between the double walls. Perhaps this has an insulating property and prevents the outside from expanding as much??!!? I dunno.. Chester --- Ron Buchalski <rbuchals@hotmail.com> wrote: > Date: Wed, 31 Oct 2001 17:45:43 > From: "Ron Buchalski" <rbuchals@hotmail.com> > Subject: Re: [E36M3] Supersprint (was Re: Laguna Seca noise limits update) > > Thanks for the sanity check, Chester. On that note, did the factory exhaust > move? I never bothered to notice. ===== __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com
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#9. Re: Laguna Seca noise limits - from Daniel Snyder
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Date: Wed, 31 Oct 2001 10:35:23 -0800 From: "Daniel Snyder" <m3ltw@msn.com> Subject: Re: Laguna Seca noise limits > From: Peter Guagenti <peter@guagenti.com> > Subject: Re: [E36M3] Laguna Seca noise limits update > Seems I hit 94db on my way up to 6. I was actually a little proud. ;-) And the LS staff were very accomodating to us, when they have the power to send you on your way. > One thing to note -- the booth isn't where the microphone is. The > microphone is on the fence line. Not 50-75 feet from the track, more like > 20ft. If your car is loud, stay as far to the left side of the track as you > can without killing your line. > > - peterg The microphones are exactly 50 feet from the edge of the track. It may seem like it is right there, especially at speed, but SCCA regulations (and other groups) establish the measurement distance. Swerving over to the left side of the track will have a marginal difference, and could be quite dangerous. As an instructor there, I would bench any car that did this. As a passing zone (on the left), the last thing we need is someone giving a pass, and then remembering they need to stay away from the microphone, and swerving into the passing car. The crunch of metal will definitely exceed 92 db! Just short shift. If you know your car is loud, get it fixed or avoid the track. Dan S.
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#10. Re: [E36M3] Re: Laguna Seca noise limits - from peter@guagenti.com
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Date: Wed, 31 Oct 2001 10:56:17 US/Pacific From: peter@guagenti.com Subject: Re: [E36M3] Re: Laguna Seca noise limits > Swerving over to the left side of the track will have a marginal difference, > and could be quite dangerous. As an instructor there, I would bench any car > that did this. As a passing zone (on the left), the last thing we need is > someone giving a pass, and then remembering they need to stay away from the > microphone, and swerving into the passing car. The crunch of metal will > definitely exceed 92 db! I was never recommend to "swerve" away, nor would anyone with any track experience get off-line in a passing zone. However, car placement right there seemed to be a little flexible at moderate speeds. If you have a choice it would seem that discretion would lead you to not go all the way to the track edge. Obviously I'm not an instructor so I could be wrong... > Just short shift. If you know your car is loud, get it fixed or avoid the > track. I think there are a compbination of things going on here. My car is loud, and I'm aware that I have to do something about it. I did short shift. But how do you explain the completely stock '95 that hit 94db on Friday? Acoustics have a lot of variables that can work against you in a situation like this and it would seem to help if you knew all of your options. - peterg (crawled past the sound booth in 4th gear after getting black flagged) ------------------------------------------------------------------------------------------- This message was sent using HiSpeed Technologies Webmail. http://www.hispeed.com