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#41
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I already got off my arse once and dug out my fuel pressure kit and listed the part number...When I get a moment, I'll go back and see if it lists the thread size.. |
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#42
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I know I've used tire valve caps on my fuel rail but it was plastic so the threads could be slightly off and still mesh ok.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#43
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listed the wrong fitting
Quote:
andrewwynn, can YOU tell me what adapter size/thread works for you?
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'01 BMW X5-E53 3.0i (born 7/13/01) topas-blau, Leder-Montana grau, my new favorite project car Plus four GM vehicles: 2 Daily Drivers, and 2 modified trucks (for hauling & camping): 3 Chevys: '09 HHR Panel LS 2.2L, '08 Cobalt Coupe LS 2.2L, '04 Silverado 2500HD WT Reg. Cab + a '98 GMC Sierra 1500 Ext. Cab - and 20 others, now gone, that I've had over the last 58 years (not counting the stillborn "1965 ChevyII altered/gasser project") |
#44
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I might be able to stop at the garage and check the fitting.
__________________
2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#45
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chasing my tail, for lack of concrete facts
Quote:
I've read so much conflicting info on the Schrader valve sizes used on various tires, fuel rail ports, and their associated thread sizes (plus such descriptions as "large" & "small" that are absolutely useless without thread sizing), that any first-hand knowledge gleaned may be of use to me, in lieu of getting absolute confirmation of a fitting's thread size from someone that actually used one on an X5 3.0i fuel rail Schrader (preferably on an E53). ![]() I've read hundreds of posts about problems connecting to the Schrader, others about weak welds/solder joints on the rail itself (with pinhole leaks or larger, causing me some concern about forcing a connection there), and dozens of parts lists for tester fittings that are claimed to work (but nowhere the actual thread size). And then there is newtis info on special tools (of unobtainium) that are touted as the ones to use when testing fuel pressure. ![]() I'm trying to figure out a workaround, to check pressure at another location. Maybe prior to the rail, in the preceding fuel hose, or underneath, exiting the filter/regulator. I'm perusing the fuel system schematic, prior to actually exposing the actual parts involved (hands-on), since I have no prior experience on high pressure fuel injection systems (always had GM systems that were easy to work on), or on any European car (except for replacing a 4" hose on my '73 Volvo, 45 years back). ![]() I'm also thinking about getting a spare fuel rail, just in case of breakage, and if there's no problem , then modifying the spare rail to have a permanently-mounted pressure gauge underhood (not on the windshield wiper cowl, like on my drag race car), with a standard-sized Schrader attached. Going off on a tangent, again.
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'01 BMW X5-E53 3.0i (born 7/13/01) topas-blau, Leder-Montana grau, my new favorite project car Plus four GM vehicles: 2 Daily Drivers, and 2 modified trucks (for hauling & camping): 3 Chevys: '09 HHR Panel LS 2.2L, '08 Cobalt Coupe LS 2.2L, '04 Silverado 2500HD WT Reg. Cab + a '98 GMC Sierra 1500 Ext. Cab - and 20 others, now gone, that I've had over the last 58 years (not counting the stillborn "1965 ChevyII altered/gasser project") |
#46
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I'd suggest taking a trip to your local Parker store and see if there is a BPP fitting that has the correct thread size. I did that once but can't remember which of the pretty many BMW models I did that for.
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2001 x5 3.0, 1990 e30 M3, 1991 318is, 2002 325i, 2008 335i Dinan stage 3 6 speed, |
#47
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A steel valve cap for a tire will confirm if it's the same. Also it should have had one and check if that fits on a tire valve stem.
__________________
2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#48
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I’ll check kit for sizes. Better yet, I’ll ask my cuz for info. Maybe BMW can tell more about the test port.
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'06 X5 3.0i - bought @143,123 miles (12/26/20) |
#49
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that was my first test
Quote:
I don't know if the brass fitting is M8x1 NPT? (or the Euro/Asian equivalent, or what). If I summon up the guts to risk breaking the Schrader off the rail (I'm infamous for my heavy-handed tweaking of aluminum parts), using the #8 fitting over the exterior of the fuel rail Schrader, then I'll use about two turns of the thick-er Teflon tape to try to seal the fitting, which will only turn a few threads down. It's probably my best course, as opposed to an alternate workaround. In related news today, on another trip to another Dr's lab (my newest hobby), the Torque Pro app on the dash said that my long-term fuel trims had now risen to 11.72% each (after being at zero, after resetting the MAF and clearing adaptations awhile back). The short-term fuel trims were bouncing between a high of 10.67% to a low of -11.72% (as observed, with the highs under rapid acceleration, and the lows just following that, on deceleration). And the MAF was sitting at 5.6 g/s (at 700 rpm, in gear, with A/C running, at stoplights). I'm feeling that the MAF sensor is not a problem, afterall. No driveabilty problem (ever), nor faults were recorded on my 22 mile trip (now the X5 has 210685 miles, which means I've driven it only 676 miles in 11.5 months...<1.93 miles per day). I used to average over 100 miles a day, when commuting to work and weekend racing.
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'01 BMW X5-E53 3.0i (born 7/13/01) topas-blau, Leder-Montana grau, my new favorite project car Plus four GM vehicles: 2 Daily Drivers, and 2 modified trucks (for hauling & camping): 3 Chevys: '09 HHR Panel LS 2.2L, '08 Cobalt Coupe LS 2.2L, '04 Silverado 2500HD WT Reg. Cab + a '98 GMC Sierra 1500 Ext. Cab - and 20 others, now gone, that I've had over the last 58 years (not counting the stillborn "1965 ChevyII altered/gasser project") |
#50
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I found this;
External 8V1 thread: 0.305 in (7.747 mm) x 32 TPI[4] (1⁄32 in or 0.7938 mm pitch; tap size 8v1-32) No idea what the hell 8v1 is.
__________________
2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
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