E36M3 #2429

Tuesday, July 09, 2002 16:49:27

This digest contains the following messages:

#1. Re: [E36M3] Timing of RSM replacement? - from ChuckBrazeau@aol.com
#2. RE: Fluids - from Doug Wirth
#3. oil testing - from Dorffer, Rich
#4. Re: [E36M3] WTB 98 M3 diff - from LoweSeaton@aol.com
#5. Re: [E36M3] Timing of RSM replacement? - from Todd C. Merrill
#6. Re: [E36M3] oil testing - from Todd C. Merrill
#7. RE: [E36M3] Re: OBD2 cat on 95 M3 - from Robert S. Hatrak II
#8. Re: Timing of RSM replacement? - from Neil Maller
#9. Re: [E36M3] Fluids - from Mdriver13@aol.com
#10. 95 vs. 96+exh manifold - from RacerxJLing@aol.com
#11. RE: [E36M3] Timing of RSM replacement? - from Robert S. Hatrak II

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#1. Re: [E36M3] Timing of RSM replacement? - from ChuckBrazeau@aol.com
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Date: Tue, 09 Jul 2002 16:41:51 -0400 From: ChuckBrazeau@aol.com Subject: Re: [E36M3] Timing of RSM replacement? Curious... If the E46 RSM's are superior to the E36 RSM design and they directly fit the E36 cars, then why doesn't BMW supersede the E36 RSM part number to the E46 part? Or... have they already? Chuck Brazeau 95 M3 - Violet/Black http://www.brazeauracing.com/ -----Original Message----- > Date: Tue, 09 Jul 2002 09:54:56 -1000 > From: Jay G <jguzman@hawaii.edu> > Subject: Re: [E36M3] Timing of RSM replacement? > > hi chris, and other list members...based on *my* experience, it is possible to > have RSMs fail and not make any noise...when my car had 28k miles, i took it in > for scheduled maintenance (still free) and told them that i thought the RSMs > were shot...there was no noise or clunking coming from that area at all...i just > wanted them to check it out, b/c of the info on the list...i got my car back and > sure enough, they replaced both RSMs under warranty because they were > torn...just another data point... > > Chris Papademetrious wrote: > > > Based on my personal experience, I don't know enough to > tell you if it's > > possible for a RSM to fail, but not exhibit any noises.

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#2. RE: Fluids - from Doug Wirth
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Date: Tue, 9 Jul 2002 13:38:14 -0700 From: Doug Wirth <DWirth@serena.com> Subject: RE: Fluids OK now I'm really confused. My manual says that I have life time tranny and diff fluid. I think I got the diff fluid straight at 75W90 gear oil (mobile 1 seems to be the choice). I've also been told that my tranny should have ATF. Just looking for some recommendations on that. It is a 5-speed Manual Thanks again Doug 99 M3 *********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. ***********************************************************************

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#3. oil testing - from Dorffer, Rich
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Date: Tue, 9 Jul 2002 16:46:41 -0400 From: "Dorffer, Rich" <RDORFFER@CleIndians.com> Subject: oil testing Paul says> > Are you saying you are paying 30 bucks for a single lab diagnosis? > Sheez...Im paying half that with AV lubes from Cleveland Tech, and I bet I > get as complete results as you do. You dont have to be paying that much, if > Im reading you right. I have checked out Cleveland Tech personally by stopping there and talking to them. They do lots of industrial work and appear to be very competent from what I have seen and heard. Actually, they are called CTC Analytical Services (18419 Euclid Ave, Cleveland, Ohio 44112 phone: (216) 383-8200) and they charge $18.40 per test or sell prepackaged ten packs for $150 ($15 each). I bought the prepaid 10 pack and plan to start to use them soon. They also do stuff for subcontractors that buy their kits, charge a markup and send it to CTC for their analysis. Later, Rich 95 M3 90 325is 89 325is

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#4. Re: [E36M3] WTB 98 M3 diff - from LoweSeaton@aol.com
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Date: Tue, 09 Jul 2002 16:50:00 -0400 From: LoweSeaton@aol.com Subject: Re: [E36M3] WTB 98 M3 diff vernon_anderson@yahoo.com writes: > > Based on the amount of inside rear wheelspin I experienced at the Peru > Tour this weekend, I suspect that the diff on my 98 M3 is gone or at > least on its way out. I'm going to check the breakaway torque on it > tonight, ..... <snip> ...... Vern, How do you "test" the breakaway torque on a differential? I too suspect the limited slip part of my diff is long gone. In fact, I wonder if it ever functioned correctly. I think I have always had severe inside wheel spin from mile 0. I wish now I had taken it in for repair during the warranty. My inital thought was it appeared OK. I know 2 "tests" for limited slip differentials. If you jack up both rear wheels and turn one by hand, the other rear wheel should turn in the SAME direction. An open differential, the wheels turn in OPPOSITE directions. The other indication is if you just jack up one rear wheel and try to turn it. It should be difficult to turn by hand due to the limited slip action. Right? My diff passes these tests with flying colors. But it sure doesn't do a hill of beans good on the track/street. To prove it, I jacked up one wheel with my floor jack (jack parallel to the car) using my Steve D'G jack plate. I then started my M3 up and put it in second gear. I took the speedometer up to 60 mph, car never budged. I should have been able to drive around the block? Here's an idea for you. Something to try at least. Replace your differential fluid with Redline 75W/90 NS gear oil. That is, gear oil NOT made for a limited slip differential. It won't have the friction modifiers in the oil. It should increase the "lock up". I'm going to give it a try before I spend a fortune on a new diff. Lowell Seaton '95 M3/2

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#5. Re: [E36M3] Timing of RSM replacement? - from Todd C. Merrill
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Date: Tue, 9 Jul 2002 17:22:51 -0400 (EDT) From: "Todd C. Merrill" <tmerrill@mathworks.com> Subject: Re: [E36M3] Timing of RSM replacement? On Mon, 8 Jul 2002, Jim Bassett wrote: > But replacing them is a fairly easy DIY job. You do need to lift the rear > end, but a jack & jackstands is all that's necessary. The hardest part is > getting all the trunk carpeting out of the way. I did this this past long weekend. I'm a little skittish about working on my daily driver car, but this really was extremely straightforward. I recommend Rich Dorffer's parts list found in the archives: http://www.bmw-m.net/Digest/Archive_2002_03%20digest%202059-2150/digest2142.htm#7 Here are the racepad.com instructions: http://www.racepad.com/tech/bmw/change_rear_shock_mounts/change_rear_shock_mounts.htm I used these (didn't come across the racepad.com one at the time): http://www.unofficialbmw.com/e36/suspension/e36_replace_rear_shock_bushings.html and http://www.rose-hulman.edu/~smithm3/e46_m3_rear_shock_mount_retrofit.htm In March, I had the badly torn, stock E36 M3 RSM's replaced (@44k miles) with Ground Control units, which were a little too harsh for my taste (YMMV); hence, my replacement with the E46 M3 ones, plus the reinforcement plates. I have the GC RSM's which I don't want anymore, if anyone is interested in buying them used. They have about 4k miles on them. Until next time... Todd 1998 BMW M3 coupe BMW CCA member, Boston Chapter ---

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#6. Re: [E36M3] oil testing - from Todd C. Merrill
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Date: Tue, 9 Jul 2002 17:30:01 -0400 (EDT) From: "Todd C. Merrill" <tmerrill@mathworks.com> Subject: Re: [E36M3] oil testing On Tue, 9 Jul 2002, Dorffer, Rich wrote: > I have checked out Cleveland Tech personally by stopping there and > talking to them. They do lots of industrial work and appear to be very > competent from what I have seen and heard. Actually, they are called > CTC Analytical Services (18419 Euclid Ave, Cleveland, Ohio 44112 phone: > (216) 383-8200) I'm another satisfied customer of theirs. Recommended. An oil analysis after a blown head gasket on my old 5-er showed no glycol in the oil. <whew> Here's what the report looks like: http://www.boston-bmwcca.org/bimmer/2001/07/images/head-anal-800.jpg Until next time... Todd 1998 BMW M3 coupe BMW CCA member, Boston Chapter ---

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#7. RE: [E36M3] Re: OBD2 cat on 95 M3 - from Robert S. Hatrak II
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Date: Tue, 9 Jul 2002 14:32:03 -0700 From: "Robert S. Hatrak II" <hatrak@ix.netcom.com> Subject: RE: [E36M3] Re: OBD2 cat on 95 M3 Neil and everyone else concerned, I've put a halt to the project. I've been talking off-line with those "in the know" and have been told that there really isn't any benefit to doing this upgrade. The cat that I was to have installed fell through, so I was going to have the front 2-2 collector from a OBD2 cat welded onto my cat, in place of the 2-1. I'm told that performing this mod will yield very little (at best) to no increase in power, while costing time and money. I wouldn't even earn a badge for it this time, though. <G> So, unless someone comes up with a dyno sheet that shows it to really help the car develop a ton of extra power (which ain't gonna happen), the project looks as if it will be kaput. Thanks for all of the replies from everyone. I really appreciate the help. Rob -----Original Message----- One obvious difference is that your OBD-I has a single oxygen sensor - isn't it located in that junction that you want to get rid of before the cats? - whereas the OBD-II has a full closed loop control with four sensors, one up in the single exit from each cylinder bank's exhaust manifold, and one right after each cat. With the later plumbing it seems to me that you will have no pre-cat O2 sensor port remaining, and you can't connect to a post-cat sensor instead since it's not monitoring raw exhaust. You could weld in an O2 sensor fitting (you can buy these from BMP) someplace before the cats, but without a crossover you'd be monitoring one cylinder bank's output only. Also, do you know that the 96+ system fits physically? (I have no clue!) Certainly the 95 and 96+ have different exhaust manifolds, so you'll need to figure out whether the later cat system will mate up to the earlier manifold. Maybe what you really need to do is to locate one of the famed and elusive Dr. Gas crossovers for the 95 M3 to replace that more restrictive junction before your OBD-I cats. Carl Buckland's old ICE 9 car, now in Chicago, had one of these I recall. Good luck! Neil 96 M3

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#8. Re: Timing of RSM replacement? - from Neil Maller
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Date: Tue, 09 Jul 2002 16:32:34 -0500 From: Neil Maller <neil.maller@gte.net> Subject: Re: Timing of RSM replacement? on 7/9/02 3:18 PM, Jay G <jguzman@hawaii.edu> wrote: > hi chris, and other list members...based on *my* experience, it is possible to > have RSMs fail and not make any noise...when my car had 28k miles, i took it > in for scheduled maintenance (still free) and told them that i thought the > RSMs were shot...there was no noise or clunking coming from that area at > all...i just wanted them to check it out, b/c of the info on the list...i got > my car back and sure enough, they replaced both RSMs under warranty because > they were torn...just another data point... And unless you have cut access flaps in the trunk lining, by the time you spend the time to tear it out and drop the shocks to check the RSMs, you may as well just replace them anyhow. A pair of E46 M3 RSMs goes for well under $40. Neil 96 M3

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#9. Re: [E36M3] Fluids - from Mdriver13@aol.com
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Date: Tue, 9 Jul 2002 17:32:00 EDT From: Mdriver13@aol.com Subject: Re: [E36M3] Fluids In a message dated 7/9/02 2:29:57 PM Eastern Daylight Time, CWard@ContractLumber.com writes: > Make sure you get the two crush washers required for the diff fluid change. > Also, make sure you loosen the fill plug before you loosen the drain plug.. > Good point, and well worth doing. I'm using Mobil 1 75w90 in the diff and love it. Redline MTL in the tranny. No problems but did recently notice lots of slop between gears on those 95 degree days. It went away when the temps went back down into the 80's. Strange? Bob Gill 97 ///M3 coupe Philly Region SCCA AS Champion 1997 & 2000 BSP Champion 2001

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#10. 95 vs. 96+exh manifold - from RacerxJLing@aol.com
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Date: Tue, 9 Jul 2002 17:47:04 EDT From: RacerxJLing@aol.com Subject: 95 vs. 96+exh manifold I believe I heard that the 96+ M3's manifold flows better than the 95...true? I am thinking of doing a 3.2 96+ motor & exhaust manifold on my 95. Also heard the OBDI works well w/ the 3.2 motor. Open to thoughts/opinions on this conversion. Thanks Jeff

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#11. RE: [E36M3] Timing of RSM replacement? - from Robert S. Hatrak II
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Date: Tue, 9 Jul 2002 14:47:05 -0700 From: "Robert S. Hatrak II" <hatrak@ix.netcom.com> Subject: RE: [E36M3] Timing of RSM replacement? Didn't someone recently mention that you could get at the mounts for replacement from inside the car, in the rear seat area? I think they mentioned that you could remove the two small outer sections of the rear seat and access was then a piece of cake from there. Does anyone else remember this? I have not tried it yet, so I can't say if this is good info or not. Hopefully this does work and will save people some time. Rob

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