[uucdigest] Saturday, January 25 2003 Volume 03 : Number 6055
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Send 'em to [EMAIL PROTECTED] |__________________________________________________________________ In this BMW UUC Digest: [uuc] RE: BMW Brake Ventilation [uuc] RE: Best Tool Re: [uuc] RE: Best Tool [uuc] Re: Brembo's on E34 M5 [uuc] Accusump Re: [uuc] RE: BMW Brake Ventilation Re: [uuc] Accusump Re: [uuc] RE: BMW Brake Ventilation RE: [uuc] RE: Best Tool Re: [uuc] Re: Brembo's on E34 M5 ---------------------------------------------------------------------- Date: Sat, 25 Jan 2003 08:44:54 -0600 From: "Scott Staewen" <[EMAIL PROTECTED]> Subject: [uuc] RE: BMW Brake Ventilation I'm coming into this discussion a little late, but wonder if any of you guys know why BMW decided to close off the front brake ducts on the *E39* M5. The most common answer I've heard is that it was to decrease overdusting of the wheels. I've heard that it was to protect the brakes from rocks and road debris, and less commonly, I've heard it was to keep the disks from getting "too cold" -- which makes the *least* sense to me. Anyone know the real answer? FWIW, I've made the ducts functional on my car as I occasionally take it to the track. I can't detect any difference in braking performance on the street, nor to my eye is there any difference dust buildup on the wheels (they're dirty as hell in a day with or without the ducts open. Cheers, Scott Staewen _________________________________________________________________ Help STOP SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail ------------------------------ Date: Sat, 25 Jan 2003 09:30:28 -0600 From: Jason Scott <[EMAIL PROTECTED]> Subject: [uuc] RE: Best Tool Can anyone recommend a good, safe spring compressor? I've never used one before and really don't want to take any chances. Thanks. - - Jason '86 325e > Date: Fri, 24 Jan 2003 20:09:34 -0800 (PST) > From: Neil Deshpande <[EMAIL PROTECTED]> > Subject: [uuc] RE: Best Tool > > Kevin: > > Though I never got to use it, the best strut > compressor I saw was at Mike Lawrence's house. It was > a screw much like the E30 jack, but with two plates > that locked into the strut on either end. You pushed > this onto the spring and cranked the handle, driving > the two plates together and compressing the spring. > AFAIK, it was a Tokico, but I could not find it on the > Internet. > > Neil Deshpande ------------------------------ Date: Sat, 25 Jan 2003 10:52:01 -0500 From: Ed MacVaugh <[EMAIL PROTECTED]> Subject: Re: [uuc] RE: Best Tool I bought a MAC tools one from Duane Collie used for $75. It is the scissors type (also called clamshell). It works as Neil described, but with a one inch wrench rather than a crank. Ed Jason Scott wrote: >Can anyone recommend a good, safe spring compressor? > >I've never used one before and really don't want to take >any chances. >Thanks. > >- Jason >'86 325e > > > >>Date: Fri, 24 Jan 2003 20:09:34 -0800 (PST) >>From: Neil Deshpande <[EMAIL PROTECTED]> >>Subject: [uuc] RE: Best Tool >> >>Kevin: >> >>Though I never got to use it, the best strut >>compressor I saw was at Mike Lawrence's house. It was >>a screw much like the E30 jack, but with two plates >>that locked into the strut on either end. You pushed >>this onto the spring and cranked the handle, driving >>the two plates together and compressing the spring. >>AFAIK, it was a Tokico, but I could not find it on the >>Internet. >> >>Neil Deshpande >> >> > > > ------------------------------ Date: Sat, 25 Jan 2003 10:52:57 -0500 (EST) From: Abe Reinhartz <[EMAIL PROTECTED]> Subject: [uuc] Re: Brembo's on E34 M5 - --0-579573075-1043509977=:29965 Content-Type: text/plain; charset=us-ascii Does anybody out there have any experience with Brembo brakes on an E34 M5? Looking for that as an upgrade. TIA Abe Scott Staewen <[EMAIL PROTECTED]> wrote: I'm coming into this discussion a little late, but wonder if any of you guys know why BMW decided to close off the front brake ducts on the *E39* M5. The most common answer I've heard is that it was to decrease overdusting of the wheels. I've heard that it was to protect the brakes from rocks and road debris, and less commonly, I've heard it was to keep the disks from getting "too cold" -- which makes the *least* sense to me. Anyone know the real answer? FWIW, I've made the ducts functional on my car as I occasionally take it to the track. I can't detect any difference in braking performance on the street, nor to my eye is there any difference dust buildup on the wheels (they're dirty as hell in a day with or without the ducts open. Cheers, Scott Staewen _________________________________________________________________ Help STOP SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail Abe Reinhartz MD - --------------------------------- Post your free ad now! Yahoo! Canada Personals - --0-579573075-1043509977=:29965 Content-Type: text/html; charset=us-ascii <P>Does anybody out there have any experience with Brembo brakes on an E34 M5? Looking for that as an upgrade. <P>TIA <P>Abe <P> <B><I>Scott Staewen <[EMAIL PROTECTED]></I></B> wrote: <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">I'm coming into this discussion a little late, but wonder if any of you guys <BR>know why BMW decided to close off the front brake ducts on the *E39* M5. The <BR>most common answer I've heard is that it was to decrease overdusting of the <BR>wheels. I've heard that it was to protect the brakes from rocks and road <BR>debris, and less commonly, I've heard it was to keep the disks from getting <BR>"too cold" -- which makes the *least* sense to me.<BR><BR>Anyone know the real answer?<BR><BR>FWIW, I've made the ducts functional on my car as I occasionally take it to <BR>the track. I can't detect any difference in braking performance on the <BR>street, nor to my eye is there any difference dust buildup on the wheels <BR>(they're dirty as hell in a day with or without the ducts open.<BR><BR>Cheers,<BR><BR>Scott Staewen<BR><BR>_________________________________________________________________<BR>! Help STOP SPAM with the new MSN 8 and get 2 months FREE* <BR>http://join.msn.com/?page=features/junkmail<BR></BLOCKQUOTE><BR><BR><P><FONT face=Verdana size=2><EM>Abe Reinhartz MD</EM></FONT></P><p><br><hr size=1>Post your free ad now! <a href="http://ca.personals.yahoo.com/";><b>Yahoo! Canada Personals</b></a><br> - --0-579573075-1043509977=:29965-- ------------------------------ Date: Sat, 25 Jan 2003 08:37:07 -0800 (PST) From: Dave Nichols <[EMAIL PROTECTED]> Subject: [uuc] Accusump - --0-1831149158-1043512627=:81914 Content-Type: text/plain; charset=us-ascii I've had two engines (m20 in a 325i and m30 is my e12 car) both spin bearings at the track due to hard cornering forces (same damn turn at Roebling Road). We installed an Accusump (2 quart model with electric valve) and haven't had any problems since. Just be sure you get the check valve and install it close to the point where the oil comes out of the engine so it won't allow the pressure to bleed back through the pump. By restricting it to one direction, the pressure pushes the oil up through the motor and with the two quart version, it has enough residual pressure to give us about 20psi before start up. Just be sure to turn the key and wait for the pressure to build before you engage the starter. The Accusump is not the answer to every low oil pressure problem, but if you're not getting enough pressure in hard turns, rapid acceceleration or hard braking (my Chevy Silverado has the pressure drop to near zero in panic stops, the "check gagues" light comes on and it takes about 2-3 seconds for it to recover) you'll find it helpful. Big Dog - --0-1831149158-1043512627=:81914 Content-Type: text/html; charset=us-ascii <P>I've had two engines (m20 in a 325i and m30 is my e12 car) both spin bearings at the track due to hard cornering forces (same damn turn at Roebling Road). We installed an Accusump (2 quart model with electric valve) and haven't had any problems since. Just be sure you get the check valve and install it close to the point where the oil comes out of the engine so it won't allow the pressure to bleed back through the pump. By restricting it to one direction, the pressure pushes the oil up through the motor and with the two quart version, it has enough residual pressure to give us about 20psi before start up. Just be sure to turn the key and wait for the pressure to build before you engage the starter. </P> <P>The Accusump is not the answer to every low oil pressure problem, but if you're not getting enough pressure in hard turns, rapid acceceleration or hard braking (my Chevy Silverado has the pressure drop to near zero in panic stops, the "check gagues" light comes on and it takes about 2-3 seconds for it to recover) you'll find it helpful.</P> <P>Big Dog</P> - --0-1831149158-1043512627=:81914-- ------------------------------ Date: Sat, 25 Jan 2003 10:33:15 -0500 From: Ed MacVaugh <[EMAIL PROTECTED]> Subject: Re: [uuc] RE: BMW Brake Ventilation Scott, I heard there was cabin perceivable (perceptible) noise in a crosswind, and they figured someone spending that much for a car would bring it in complaining . . . . . (tongue only slightly in cheek). Ed E28 M5 Scott Staewen wrote: > I'm coming into this discussion a little late, but wonder if any of > you guys know why BMW decided to close off the front brake ducts on > the *E39* M5. The most common answer I've heard is that it was to > decrease overdusting of the wheels. I've heard that it was to protect > the brakes from rocks and road debris, and less commonly, I've heard > it was to keep the disks from getting "too cold" -- which makes the > *least* sense to me. > > Anyone know the real answer? > > FWIW, I've made the ducts functional on my car as I occasionally take > it to the track. I can't detect any difference in braking performance > on the street, nor to my eye is there any difference dust buildup on > the wheels (they're dirty as hell in a day with or without the ducts > open. > > Cheers, > > Scott Staewen ------------------------------ Date: Sat, 25 Jan 2003 09:37:46 -0800 From: marco <[EMAIL PROTECTED]> Subject: Re: [uuc] Accusump According to the accusump website the checkvalve is only needed with a remote filter or oil cooler set up. I would be interested in a "oil ciruit" diagram for an E36 engine if anyone has it. Marco Marco Dave Nichols wrote: > I've had two engines (m20 in a 325i and m30 is my e12 car) both spin > bearings at the track due to hard cornering forces (same damn turn at > Roebling Road). We installed an Accusump (2 quart model with electric > valve) and haven't had any problems since. Just be sure you get the > check valve and install it close to the point where the oil comes out of > the engine so it won't allow the pressure to bleed back through the > pump. By restricting it to one direction, the pressure pushes the oil > up through the motor and with the two quart version, it has enough > residual pressure to give us about 20psi before start up. Just be sure > to turn the key and wait for the pressure to build before you engage the > starter. > > The Accusump is not the answer to every low oil pressure problem, but if > you're not getting enough pressure in hard turns, rapid acceceleration > or hard braking (my Chevy Silverado has the pressure drop to near zero > in panic stops, the "check gagues" light comes on and it takes about 2-3 > seconds for it to recover) you'll find it helpful. > > Big Dog > ------------------------------ Date: Sat, 25 Jan 2003 10:04:31 -0800 From: Rex Tener <[EMAIL PROTECTED]> Subject: Re: [uuc] RE: BMW Brake Ventilation At 08:44 AM 1/25/2003 -0600, Scott Staewen wrote: >I'm coming into this discussion a little late, but wonder if any of you >guys know why BMW decided to close off the front brake ducts on the *E39* M5. I have the same question about the E46 M3, why did they close off the brake duct completely on one side and partially on the other side. Several hard stops from 70 mph will fade the brakes on an E46 M3 in stock configuration. - -- Rex Tener [EMAIL PROTECTED] ------------------------------ Date: Sat, 25 Jan 2003 13:17:19 -0500 From: "Michael" <[EMAIL PROTECTED]> Subject: RE: [uuc] RE: Best Tool I think the widest spring it can handle is either 6" or 6.5" inches. But it is really the best way to do spring work, makes it quick and easy. Mike - -----Original Message----- From: [EMAIL PROTECTED] [mailto:owner- Sounds like you're describing the original factory strut compressor for BMWs. A marvelous tool that works really well with anything pre-E36. Once you get to the larger diameter springs that the E36 started using from about 1996, it's useless, plus all E39/E39, etc. ------------------------------ Date: Sat, 25 Jan 2003 10:32:51 -0800 From: "Bora Akyol (BMW)" <[EMAIL PROTECTED]> Subject: Re: [uuc] Re: Brembo's on E34 M5 > > Scott Staewen <[EMAIL PROTECTED]> wrote: >> I'm coming into this discussion a little late, but wonder if any of you guys >> know why BMW decided to close off the front brake ducts on the *E39* M5. The >> most common answer I've heard is that it was to decrease overdusting of the >> wheels. I've heard that it was to protect the brakes from rocks and road >> debris, and less commonly, I've heard it was to keep the disks from getting >> "too cold" -- which makes the *least* sense to me. >> Disks getting too cold becomes an issue on race cars with race pads, if the pad never reaches operating temps, then you end up grinding away the rotors or cracking them. On my JS club racer, I tape off the brake ducts on cold mornings to avoid this. In your street car, you probably do not use racing pads and hence this is not an issue for you. Bora ------------------------------ End of [uucdigest] V3 #6055 *************************** | | In memory of Michel Potheau - friend, enthusiast, founder of the BMW CCA. |________________________________________ | Please visit these UUC-approved BMW parts vendors/service providers: | (listed alphabetically) | | Autoscope-Motorsports - http://www.autoscope-motorsports.com | |==================================================== | | Koala MotorSport . BMW technical information, special tool sales/rental | http://www.koalamotorsport.com | |==================================================== | | Taylor BMW - http://www.taylorbmw.com - Doc Bimmer! | UUC Motorwerks . http://www.uucmotorwerks.com |__________________________________________
