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#1. Re: Displacement and revs... - from Ron Buchalski
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Date: Fri, 14 Jul 2000 18:01:37 GMT From: "Ron Buchalski" <rbuchals@hotmail.com> Subject: Re: Displacement and revs... As someone already stated, Oversquare (larger bore than stroke) engines are optimum for high RPM operation. As far as I know, pneumatic (not cam-driven) valve trains only exist on high-end racing engines (Formula 1), which only need to survive a two-hour race. The primary driver for this technology is probably the elimination of cams and valve springs, because they limit the upper RPM capabilities of an engine (valve float). I don't think that pneumatic valve technology is at a stage where it can be deployed in production vehicles and last for the life of an engine. Plus, the benefits provided (very high RPM limits) wouldn't be usable on the street. The additional cost to implement and support such a system isn't justified for production vehicles. My $0.02, -rb >Date: Fri, 14 Jul 2000 09:26:23 -0500 >From: "Brent Williams" <brent@williamsconsultingltd.com> >Subject: Displacement and revs... > >I always thought that a large bore and short stroke with pnumatic valves >was the best way to get revs. Any comments on this? When do we get >pnumatic valves on the M3? ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com
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#2. help with next mod, life, stock tips, next fish to get... - from SpeedU4EA@aol.com
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Date: Fri, 14 Jul 2000 14:03:26 EDT From: SpeedU4EA@aol.com Subject: help with next mod, life, stock tips, next fish to get... Hello everyone, Just got the ole bonus check and want to move along in the progression of removing perfectly good parts for fun. Quick history, car has new SSR integrals, UUC short shifter, exhaust, and clutch stop. I need more education on the track before I mess with the suspension. I should save my money for a new helmet and a set of tools so I can do my own brake pads but I'm really not that smart. In fact I'm quite stupid, as traffic is getting so bad in the Bay Area I may never travel over 45 mph again. But I digress. HERE ARE MY QUESTIONS: I believe a want a CAI and chip next. Am I better off with sway bars and a strut tower barce? Or X brace? What do you guys mean about drivability being improved from the Jim C. chip? Why does no one here get the Dinan software (I am very impressed with Jim's involvment-never hear a lick from Dinan)? Don't mean to start a flame war on Dinan vs whatever, just trying to get my stuff straight. So what do you smart people think? Thanks all, Roy
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#3. re:Shark injector and Acceleration - from Chad Armstrong
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Date: Fri, 14 Jul 2000 11:19:12 -0700 From: Chad Armstrong <caarmstrong@epicor.com> Subject: re:Shark injector and Acceleration Paul wrote: <Now, in comparison, my 5.00 best with my supercharger doesn't look that special any more, does it....Well, I have improved the intake a bit since that 5.00 time,> Hey Paul, If you want to feel good go out on and empty stretch of road with your buddy next to you(or Behind he'll end up there anyway) and do some 3 to 4th to 5th gear pulls and then see him get real small in your mirror. See a forced induction car doesn't so much in 1st or 2nd gear. Your under boost for only few seconds. However get to the higher gears where you'll spend much more time in boost and it is all over. That's where you feel real horsepower differences. Compare your two's MPH at the end of a quarter mile and know roughly that every 1 mph higher you are than his is 10hp more that you have. If you both do this with your G-tech on the same outing it should pretty consistent. I have seen multiple Vorteched M3's run 108-110mph in the qtr. Best Regards, Chad Armstrong "really missing forced induction" it's very addictive. 99 M3 waiting to be blown
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#4. Re: [E36M3] Displacement and revs... - from Matt Henson
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Date: Fri, 14 Jul 2000 11:21:25 -0700 (PDT) From: Matt Henson <hensonator@yahoo.com> Subject: Re: [E36M3] Displacement and revs... Yes, 48V is coming but 12V isn't going away. Cars will have a dual rail power system for the forseeable future. This will support existing electronics and allow manufacturers to slowly change, starting with the components that could really use the 48V (Starter, PS, A/C, etc..). -Matt Skip Bogard <skip.bogard@alumni.duke.edu> wrote: Date: Fri, 14 Jul 2000 12:18:42 -0400 From: Skip Bogard Subject: Re: [E36M3] Displacement and revs... From my SAE periodicals, it would appear that the automotive industry is going to move to 48 Volts first. This will then perhaps give BMW the opportunity to introduce its camless electromagnetic valve system they've been showing off. Is that what you meant? You said pneumatic...I don't see that coming... If you want to read a "why?" article, this one is pretty good... http://www.equipauto.com/html/body_en6.7.2.htm one of the few articles that estimates the power consumption of a single valve... Yeah, believe it or not, we're going to 48 volts...hold on... - Skip Brent Williams wrote: > > Date: Fri, 14 Jul 2000 09:26:23 -0500 > From: "Brent Williams" > Subject: Displacement and revs... > > I always thought that a large bore and short stroke with pnumatic valves was > the best way to get revs. Any comments on this? When do we get pnumatic > valves on the M3? > > Just wondering. > > Brent ************************************************************* List Commands UNSUBSCRIBE - (in subject line) unsubscribes you from the mailing list. ************************************************************* _____ Do You Yahoo!? Get Yahoo! Mail <http://mail.yahoo.com/> - Free email you can access from anywhere!
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#5. Re: [E36M3] Displacement and revs... - from andy radin
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Date: Fri, 14 Jul 2000 11:24:38 -0700 From: "andy radin" <fourfa@mindspring.com> Subject: Re: [E36M3] Displacement and revs... That article, as well as the SAE stuff I read, says 42 volts, not 48. Either way, what I've read about BMW's electromagnetic valves is that they're years, perhaps decades from working. It's easy to slam the valves open and shut; it's much much harder to open and close them softly enough that they last more than a few weeks, and don't consume more power than the engine produces. That is an immense problem that may not be solvable in a production framework. If it is solved it will be exceedingly expensive for many many years and show up on massive diesel engines first. Renault has a big lead here. BMW also has an extremely clever mechanical variable valve timing device that goes far beyond VANOS. It's basically a normal cam/rocker setup with a movable rocker pivot, giving you continuously variable lift and duration as well as VANOS's continuously variable timing. This is a big leap forward from on-off VTEC-type systems, and doable for production. We'll see this one in a few years for sure. Pneumatic valves, at least as seen in Formula 1, simply replace the steel valve spring with a pneumatic spring. There still is a camshaft. Really the only reason for this is that steel springs can resonate at very high speeds (12,000+ rpm), or add too much friction if they're stiff enough to resonate higher than F1 redline. Not an issue for street cars with redline under 10,000 rpm. Anyway, none of this will apply to the E46M3. Maybe if they'd never gotten involved with Rover they could have done it. andy r. >From my SAE periodicals, it would appear that the <global> >automotive industry is going to move to 48 Volts first. This >will then perhaps give BMW the opportunity to introduce its >camless electromagnetic valve system they've been showing off. >Is that what you meant? You said pneumatic...I don't see that >coming... >If you want to read a "why?" article, this one is pretty good... >http://www.equipauto.com/html/body_en6.7.2.htm one of the few >articles that estimates the power consumption of a single valve... >Yeah, believe it or not, we're going to 48 volts...hold on...
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#6. Re: [E36M3] For Seth Thomas re: car seats and seat covers - from Seth Thomas
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Date: Fri, 14 Jul 2000 15:20:35 -0400 From: "Seth Thomas" <porsche993@mindspring.com> Subject: Re: [E36M3] For Seth Thomas re: car seats and seat covers Marc, Not sure on this one as I don't have a M3/4 and never did. The only M3s I have owned were my LTW and a silver coupe. I can tell you that the LTW seats look to be the same as the ones in a 4 door but I am not sure. To me they look like the ones that come in a 325 except cloth. Don't know for sure though. I think the seatcovers you are wanting will work. I have a set that came with the car that are denim and they fit just fine but did not fit on the sport seats in my silver car. Hope this helps you. Seth Thomas ----- Original Message ----- From: <Marc.S.Edwards@QuestDiagnostics.com> To: E36M3 <e36m3@bmwmpower.com> Sent: Friday, July 14, 2000 1:03 PM Subject: [E36M3] For Seth Thomas re: car seats and seat covers > Date: Fri, 14 Jul 2000 10:01:51 -0700 > From: Marc.S.Edwards@QuestDiagnostics.com > Subject: For Seth Thomas re: car seats and seat covers > > > > Hi Seth; > > This question is for you since you have an M3 4 door sedan and a LTW. > > What are your sedan seats? Regular, lux, what is the designation? > > Are the LTW seats identical in dimension to your sedan seats? > > If I were to order seat covers from seatsavers for the sedan seats would they > fit the the LTW seats perfectly? > > Thanks, > > Marc Edwards > 1995 M3 LTW looking for seat covers > > > > ************************************************************* > List Commands > UNSUBSCRIBE - (in subject line) unsubscribes you from the mailing list. > ************************************************************* > >
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#7. swapping strut hats - from vincent.a.leo@us.arthurandersen.com
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Date: Fri, 14 Jul 2000 15:41:56 -0500 From: vincent.a.leo@us.arthurandersen.com Subject: swapping strut hats I had my mechanic swap my strut hats on my 99 M3 and now on the track the front end feels a little "loose" on the high speed straights - almost like the front end is lifting. My speeds were consistent with prior track events, so I don't think it is related to more speed. The front end was aligned after the swap and I couldn't find anything that was broken. Is this a common side effect of more negative camber? We plan to take another look at everything to make sure something did not break, but I don't remember it feeling loose before the swap. Thanks, Vince 99 M3 *******************Internet Email Confidentiality Footer******************* Privileged/Confidential Information may be contained in this message. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone. In such case, you should destroy this message and kindly notify the sender by reply email. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of my firm shall be understood as neither given nor endorsed by it.
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#8. Re: [E36M3] help with next mod, life, stock tips, next fish to - from Peter H Reinhart
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Date: Fri, 14 Jul 2000 15:53:11 -0400 From: Peter H Reinhart <reinhart@neuro.duke.edu> Subject: Re: [E36M3] help with next mod, life, stock tips, next fish to get... Seems as though you're looking for the 7 step plan here. I usually charge money for this, but since its Friday and we're all sitting around chatting here it goes: 1) Do a few driving schools 2) Get a JimC chip 3) Do a few more driving schools 4) Get PF90 brake pads 5) Do a few more driving schools 6) Get R-compound tires on a second set of rims 7) Do a few more driving schools Maximum M3 bang for the ole bonus check. For stock tips I charge extra.......:-) Cheers, At 01:13 PM 7/14/00 -0500, you wrote: Date: Fri, 14 Jul 2000 14:03:26 EDT From: SpeedU4EA@aol.com Subject: help with next mod, life, stock tips, next fish to get... Hello everyone, Just got the ole bonus check and want to move along in the progression of removing perfectly good parts for fun. Quick history, car has new SSR integrals, UUC short shifter, exhaust, and clutch stop. I need more education on the track before I mess with the suspension.......
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#9. Re: [E36M3] swapping strut hats - from Peter H Reinhart
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Date: Fri, 14 Jul 2000 16:07:19 -0400 From: Peter H Reinhart <reinhart@neuro.duke.edu> Subject: Re: [E36M3] swapping strut hats Did you also adjust the front or rear toe-in? I dialed back on toe-in front and back when I had my struts changed and the car certainly feels 'dartier' on fast straights. It wants to follow every crevice on the track. But the crispness of the turn-in is worth it...... Cheers, Peter At 02:53 PM 7/14/00 -0500, you wrote: >Date: Fri, 14 Jul 2000 15:41:56 -0500 >From: vincent.a.leo@us.arthurandersen.com >Subject: swapping strut hats > >I had my mechanic swap my strut hats on my 99 M3 and now on the track the >front >end feels a little "loose" on the high speed straights - almost like the front >end is lifting. Peter Reinhart - http://www.neuro.duke.edu/phr/m3.html NCC/Tarheel Chapters BMWCCA, NASA, PCA (E36 M3/4)
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#10. That darn plastic water - from david tow
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Date: Fri, 14 Jul 2000 13:46:56 PDT From: "david tow" <david_tow@hotmail.com> Subject: That darn plastic water Mike (or other digesters), When your car's water pump failed (plastic propeller broke?), Mike, did it cause any major damages to the engine at all, i.e. overheating, etc.? My 95 was built in the late 1994 with the plastic propeller. It has over 50k miles on it now, but I am still running it with the original water pump... Should I be concerned about having it replaced soon? Help! __ __ David Tow / / / / | / | ______ 95 M3 coupe / / / / |/ | o/______\o Red/gray / / / / | (OO=00=OO) david_tow@hotmail.com / / / /__/|__/|__| []*=XX=*[] ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com
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#11. Re: [E36M3] Re: Displacement and revs... - from Jason Bishop
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Date: Fri, 14 Jul 2000 13:46:45 -0700 (PDT) From: Jason Bishop <jason@secondhat.com> Subject: Re: [E36M3] Re: Displacement and revs... I sure would like selenoid actuated valves though. then they would be controlled by a computer just like fuel/air mixture etc. Always have perfect valve timing, no real upper limit on rpm and no more overrevs :) the computer would simply stop actuating the valves above a certain rpm. but then I figured if I'm going to go to that amount of trouble, i might as well ditch the valves entirely... and just directly inject everything. not sure what to do with the exhaust though.... whats the deal? aren't selenoids fast and strong? I would have thought that would be a no brainer... Jason On Fri, 14 Jul 2000, Ron Buchalski wrote: > Date: Fri, 14 Jul 2000 18:01:37 GMT > From: "Ron Buchalski" <rbuchals@hotmail.com> > Subject: Re: Displacement and revs... > > As someone already stated, Oversquare (larger bore than stroke) engines are > optimum for high RPM operation. > > As far as I know, pneumatic (not cam-driven) valve trains only exist on > high-end racing engines (Formula 1), which only need to survive a two-hour > race. The primary driver for this technology is probably the elimination of > cams and valve springs, because they limit the upper RPM capabilities of an > engine (valve float). > > I don't think that pneumatic valve technology is at a stage where it can be > deployed in production vehicles and last for the life of an engine. Plus, > the benefits provided (very high RPM limits) wouldn't be usable on the > street. The additional cost to implement and support such a system isn't > justified for production vehicles. > > My $0.02, > > -rb > > >Date: Fri, 14 Jul 2000 09:26:23 -0500 > >From: "Brent Williams" <brent@williamsconsultingltd.com> > >Subject: Displacement and revs... > > > >I always thought that a large bore and short stroke with pnumatic valves > >was the best way to get revs. Any comments on this? When do we get > >pnumatic valves on the M3? > > ________________________________________________________________________ > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com > > > ************************************************************* > List Commands > UNSUBSCRIBE - (in subject line) unsubscribes you from the mailing list. > ************************************************************* > >
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#12. Re: [E36M3] Displacement and revs... - from Jason Bishop
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Date: Fri, 14 Jul 2000 13:49:39 -0700 (PDT) From: Jason Bishop <jason@secondhat.com> Subject: Re: [E36M3] Displacement and revs... well i'llbe... they are making selenoid actuated valves! yeee haaaaaa!! Jason On Fri, 14 Jul 2000, Skip Bogard wrote: > automotive industry is going to move to 48 Volts first. This > will then perhaps give BMW the opportunity to introduce its > camless electromagnetic valve system they've been showing off.