[uucdigest] Tuesday, July 29 2003 Volume 03 : Number 6610
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Send 'em to [EMAIL PROTECTED] |__________________________________________________________________ In this BMW UUC Digest: [uuc] Re: <semi-OT> Synthetic Lubricants RE: [uuc] RE: E23 Bog [uuc] RE: [uucdigest] V3 #6608 [uuc] Re: [E30] clutch hydraulics Re: [uuc] Re: <semi-OT> Synthetic Lubricants [uuc] Re: <semi-OT> Synthetic Lubricants RE: [uuc] <semi-OT> Synthetic Lubricants Re:[uuc] <semi-OT> Synthetic Lubricants RE: [uuc] 1999 318IS E36 Recall: [uuc] 1999 318IS E36 RE: Recall: [uuc] 1999 318IS E36 ---------------------------------------------------------------------- Date: Mon, 28 Jul 2003 16:43:35 -0700 From: [EMAIL PROTECTED] Subject: [uuc] Re: <semi-OT> Synthetic Lubricants Rob, I figure we can recover an extra $100 in lubricants over the remaining life of the Durango without too much trouble. But it is not terribly cost effective to spend $1000 on intake and exhaust changes unless the gas mileage difference is about 5 MPG or so. That doesn't seem realistic to me. As for tires, our Michelins are pretty new, making it hard to justify replacement just now. Thanks for the ideas though. Scott >Date: Mon, 28 Jul 2003 18:49:24 -0400 >From: "Rob Levinson * UUC Motorwerks" <[EMAIL PROTECTED]> >Subject: Re: [uuc] <semi-OT> Synthetic Lubricants > >FWIW, I would think that a tire change (narrower and higher pressure) might >result in a better mpg increase than a lubricant change. > >You might also look into headers and intakes - if not for greater power, the >efficiency advantages, assuming your driving style does not change, should >result in better mpg. The plumbing on those things is very restrictive. > >- - Rob ------------------------------ Date: Mon, 28 Jul 2003 19:10:25 -0500 From: "Richard Beaver" <[EMAIL PROTECTED]> Subject: RE: [uuc] RE: E23 Bog Kevin, If your E23 has an L-Jet FI system, there are no reference sensors reading the flywheel. The L-Jet picks up it's reference signal for timing of the FI system from a pickup in the distributor. The L-Jet system is a Fuel Injection System, not a Engine Management System like the Motronic. You may also have problems with the advance mechanism in the distributor or the timing is incorrectly set. And of course there could be some sort of fuel injection issue causing your drivability problem. You might want to consider buying a book published by Bentley Publishing titled "Bosch Fuel Injection & Engine Management", authored by Charles Probst. This book covers the L-Jet system in detail and also has a section on troubleshooting. You might also want to ping the guys at www.firstfives.com , the E12 5er utilized the L-jet system and there's probably a couple of experts in this group that can help you out. Richard Beaver '85 Euro M5 '03 325Ci 5sp '89 Turbo 760 Volvo (It's an LH-Jet, Air Mass sensor instead of an AFM) - -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of KKiely Sent: Monday, July 28, 2003 3:22 PM To: [EMAIL PROTECTED] Subject: [uuc] RE: E23 Bog Does the reference sensor on the L-Jetronic read all of the teeth on the ring gear of the transmission or just a plug that's fitted into the ring? I'm wondering if an accelleration bog is related to a grinding noise at startup. The starter motor was replaced but the sound is still evident like there is poor mesh of the starter gear with the ring gear. If the teeth on the ring gear are in bad shape I would imagine the sensor would get a poor signal quality and this would account for the bog. - -Kevin ------------------------------ Date: Mon, 28 Jul 2003 18:52:57 -0700 From: "Brant" <[EMAIL PROTECTED]> Subject: [uuc] RE: [uucdigest] V3 #6608 Kevin - I'm not an E30 guy, so I do not know whether your M30 is L-Jetronic or Motronic. L-Jet uses overswing of the airflow sensor flap to provide acceleration enrichment - just like the accelerator pump used to do on carbureted cars and for the same reason. However, one function of the motronic throttle position sensor is to provide the computer with information about the rate of change of throttle position. The computer uses that information to add incremental fuel. If your system is Motronic, then a defective TPS could definitely be the cause of a bog during acceleration. Brant <<<<<<From: "KKiely" <[EMAIL PROTECTED]> Subject: [uuc] RE: M30 TPS What is the function of the Throttle Position Switch (Sensor?)? The motor seems to bog when accelerating from a stop. . . . - - -Kevin>>>>>> ------------------------------ Date: Mon, 28 Jul 2003 18:57:25 -0700 From: Peter du Bois <[EMAIL PROTECTED]> Subject: [uuc] Re: [E30] clutch hydraulics Replace the master cylinder. Inside the master cylinder is a return spring - it is prone to breaking on high mileage cars. When said breakage occurs, a broken end will poke the piston seal if the clutch is fully disengaged causing said seal to leak, allowing slave cylinder to collapse under pressure. If you are not mechanically proficient, consider having a pro do it - a PITA to install a new line on the outlet side of the cylinder w/o a lift. Peter - '87 325iS (with new clutch master cylinder) ------------------------------ Date: Mon, 28 Jul 2003 22:13:39 -0400 From: "Gary Derian" <[EMAIL PROTECTED]> Subject: Re: [uuc] Re: <semi-OT> Synthetic Lubricants Friction is reduced with thinner oils. A 75W-90 rather than 80-90 gear oil will help some, especially in cold weather. Synthetic ATF will make no change. Thinner engine oil will help. Ford has just switched to 5W-20 for fuel economy. Overall this strategy will gain very little. Perhaps the 0.5 mpg you are searching. However, saving $57 a year is hardly worth any risk in added engine wear. City driving will be little improved with lubricants. Highway driving, especially at 75 mph needs aerodynamic help. Fabricate a smooth belly pan for the front end. That will help a bunch, probably 2 or 3 mph on the highway, maybe more. Air under the vehicle drags just as much as air over the top. Low restriction intake will not improve economy since you are still at part throttle. If there is significant exhaust backpressure at those conditions, then reducing that will help, but even a Durango at 75 mph needs only 80 to 100 hp (my guess) so your exhaust should have relatively low restriction at those power levels. I don't know what you expected from a vehicle like that, but gas hog certainly is one expectation. Another trick is to drive behind larger trucks. That will significantly improve your fuel economy. That and the belly pan for the times when the big trucks are too slow or unavailable. Gary Derian - ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Monday, July 28, 2003 7:43 PM Subject: [uuc] Re: <semi-OT> Synthetic Lubricants > Rob, I figure we can recover an extra $100 in lubricants over the remaining > life of the Durango without too much trouble. But it is not terribly cost > effective to spend $1000 on intake and exhaust changes unless the gas > mileage difference is about 5 MPG or so. That doesn't seem realistic to > me. > > As for tires, our Michelins are pretty new, making it hard to justify > replacement just now. > > Thanks for the ideas though. > > Scott > > >Date: Mon, 28 Jul 2003 18:49:24 -0400 > >From: "Rob Levinson * UUC Motorwerks" <[EMAIL PROTECTED]> > >Subject: Re: [uuc] <semi-OT> Synthetic Lubricants > > > >FWIW, I would think that a tire change (narrower and higher pressure) > might > >result in a better mpg increase than a lubricant change. > > > >You might also look into headers and intakes - if not for greater power, > the > >efficiency advantages, assuming your driving style does not change, should > >result in better mpg. The plumbing on those things is very restrictive. > > > >- - Rob > > ------------------------------ Date: Mon, 28 Jul 2003 17:49:41 -0700 From: "Kevin Kelly" <[EMAIL PROTECTED]> Subject: [uuc] Re: <semi-OT> Synthetic Lubricants Scott Miller wrote: >I'm getting ready to have a local shop do a major service >(of my Dodge Durango 4x4) >I'm going to have virtually ALL lubricants changed. So, >we're talking both diffs, transfer case, transmission and >engine. Question: Will synthetic lubricants in the rear diff >and AT result in better gas mileage? >Reason for asking: The shop is telling me that synthetic >lubes will not improve gas mileage. I'm having a hard time >with that. Lower friction means better gas mileage, right? >Or is it not all that great a difference? Then Kim Henshaw wrote: >Get a new workshop. Provided that you use true synthetics >with lower friction than dino juice of course you will see a >reduction in fuel usage..... Lower aerodynamic drag also means better mileage, but I've never noticed an increase in mileage after removing the front license plate on any BMW (or after switching to slightly wider or slightly thinner tires). I keep a lot of detailed records and while I know that Red Line gear oil has lower friction I have never been able to actually notice any increase in gas mileage after switching to Red Line MTL and gear oil (I've noticed better shifting, but not better mileage). I've made the switch to Red Line on 12 BMWs and a couple Land Rovers and never noticed even a the slightest improvement in mileage. The only vehicle that I ever used synthetic (Mobile One) engine oil in was the M5 and again no noticeable difference in gas mileage. Regular oil does not flow well at low temps and this is a good thing in a vehicle like a Dodge or Land Rover that is not made as well as a BMW since you will loose less of the of the thick regular oil than the thin synth oil due to seepage past the low quality oil seals. I had to switch from Red Line gear oil to 140W regular gear oil in my 1960 SII to slow the steady flow of oil on to the floor at night and no longer use any synthetic oil in Land Rovers (I guess that is why they say all Land Rovers leak oil out and water in). I don't have anything to back it up, but in the 8 years that I have been reading at least one BMW and Land Rover list a day I have read about quite a few people that had problems soon after switching to synth ATF. I would stick with the exact brand and type of ATF recommended by your tranny manufacturer. Kevin Kelly BMW CCA 50039 ------------------------------ Date: Mon, 28 Jul 2003 20:02:11 -0700 From: "KKiely" <[EMAIL PROTECTED]> Subject: RE: [uuc] <semi-OT> Synthetic Lubricants Scott, Any benefits from just changing oil in the diff and AT will be small if measurable. Unless you were running Caro syrup in those mechanisms (mechanizimz) a dramatic change won't be evident. You will probably get longevity and a degree of smoothness. I'm a synthetic proponent but haven't ever seen a dramatic difference. In any case, how do you reconstruct all the variables to arrive at a consistent test. - -Kevin ------------------------------ Date: Mon, 28 Jul 2003 21:57:44 -0700 (PDT) From: igor koruga <[EMAIL PROTECTED]> Subject: Re:[uuc] <semi-OT> Synthetic Lubricants HOT ROD magazine had an article about synthetic lubricants (yes yes I know it's not BMW but I think article is still an interesting read) � http://www.hotrod.com/techarticles/79838/index.html Igor 86 325 BMW CCA GGC __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com ------------------------------ Date: Tue, 29 Jul 2003 02:17:12 -0400 From: [EMAIL PROTECTED] Subject: RE: [uuc] 1999 318IS E36 Thanks Andrew for your help.. Got the car last night ...very nice - -----Original Message----- From: Andrew Thomas [mailto:[EMAIL PROTECTED] Sent: 28 July 2003 22:57 To: [EMAIL PROTECTED] Subject: Re: [uuc] 1999 318IS E36 Eddie <[EMAIL PROTECTED]> writes: "I've just purchased a 99 318IS E36 coupe. Just wondering if these cars are run off a timing chain or a timing belt. Also, does the water pump and the thermostat need to be replaced on these cars. If so, when do they have to be replaced?" The M44 engine, as with the earlier M42, uses a duplex timing chain, which should never need replacing during a lifetime of normal use. Its tensioner, however, may need infrequent replacement. I know of no water pump issues with the M44. At 44,000 miles and only four years old, your car should be fit for a while yet. "Are there any others noticable problems with these cars? The car has 44000 miles on it." Aside from the usual niggles that beset BMWs (mostly related to sensitive suspension parts, in which moderate wear can quickly result in sub-optimal ride and handling), there are very few issues with this car. Maybe a spot of clutch judder. Andy T ------------------------------ Date: Tue, 29 Jul 2003 02:17:38 -0400 From: [EMAIL PROTECTED] Subject: Recall: [uuc] 1999 318IS E36 Murphy, Eddie would like to recall the message, "[uuc] 1999 318IS E36". ------------------------------ Date: Tue, 29 Jul 2003 02:33:49 -0400 From: "Rob Levinson" <[EMAIL PROTECTED]> Subject: RE: Recall: [uuc] 1999 318IS E36 Sorry, dude... this is a real-time mailing list. No "recall" feature available. - - Rob - ---- Original Message ---- From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: RE: Recall: [uuc] 1999 318IS E36 Date: Tue, 29 Jul 2003 02:17:38 -0400 >Murphy, Eddie would like to recall the message, "[uuc] 1999 318IS E36 >". ------------------------------ End of [uucdigest] V3 #6610 *************************** | | 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! | |==================================================== | Turner Motorsport Inc . 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