https://www.youtube.com/watch?v=ucAryeV1Vr0
Here is an example youtube video of how it was done "back in the day" with low compression diesel engines, slow crank speeds, and "grunt starters"..... "We've come a long way baby".... so to speak. On Tue, Jun 19, 2018 at 4:44 PM, Larry Turner via Mercedes < mercedes@okiebenz.com> wrote: > Thanks, > > That certainly makes sense. So my math method appears to be off by a > factor of 1.75 or so? I kept mulling that over and came to the [wrong] > conclusion about multiplying the stated compression time the atmospheric > pressure and failed to consider the heat needed? Now that you mention it, > there are so many variables at play it must be a much more complex formula > than I tried to make it.. > > Thanks for the explanation.... > > Larry --- > > > On 06/19/2018 2:04 PM, G Mann via Mercedes wrote: > >> Diesel engine is a "compression ignition" engine, so to fire the fuel/air >> charge it must raise the temperature of the charge to a point at or above >> the flash point of the fuel/air charge, so the engine "lights off". >> >> Typical compression charge temps necessary to hit flash point for diesel >> is >> 400 degrees F. >> Ambient air temp plays a part in reaching that flash point, thus, glow >> plugs. >> Crank speed is another factor.. thus, the need for a strong battery. >> Next is compression condition of the engine. >> >> You can put a hair dryer in the intake, add a booster battery... but if >> you >> have low compression... very hard to start.. >> >> >From my experience, the magic happens best between 390 and 420 psi on a >> hot >> engine compression test. >> >> >> On Tue, Jun 19, 2018 at 10:49 AM, Larry Turner via Mercedes < >> mercedes@okiebenz.com> wrote: >> >> Speaking of what an engines compression should be, I always thought it was >>> the compression ration X atmospheric pressure. So a engine with 18:1 >>> (as a >>> diesel might be) would look for 18X14.7 (approx) = 264psi or so. While a >>> gas engine at 7:1 would be ~103. Is this logical? >>> >>> LarryT >>> >>> 91 300D (RIP ??) >>> >>> 06 E350 (POS also dead) >>> >>> 06 Ford Explorer >>> >>> 74 911 >>> >>> 66 MGB >>> >>> >>> On 06/18/2018 1:51 PM, Andrew Strasfogel via Mercedes wrote:Speaking of >>> >>> Seller seems WAY too enthusiastic. Buyer beware. >>>> 264 >>>> On Mon, Jun 18, 2018 at 10:33 AM, Frederick Moir via Mercedes < >>>> mercedes@okiebenz.com> wrote: >>>> >>>> Depends on cranking speed amongst other criteria. >>>> >>>>> Fred. >>>>> >>>>> On Mon, Jun 18, 2018 at 10:18 AM, Kaleb C. Striplin via Mercedes < >>>>> mercedes@okiebenz.com> wrote: >>>>> >>>>> Closer to 400 or over in my mind >>>>> >>>>>> Sent from my iPhone >>>>>> >>>>>> On Jun 17, 2018, at 9:49 PM, Dwight Giles <dwight.gi...@gmail.com> >>>>>> wrote: >>>>>> >>>>>> What should they be? >>>>>>> >>>>>>> Dwight Giles Jr. >>>>>>> Wickford RI >>>>>>> >>>>>>> On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" < >>>>>>> mercedes@okiebenz.com> wrote: >>>>>>> 1979 Mercedes-Benz 300SD **VERY CLEAN** >>>>>>> >>>>>>>> https://albuquerque.craigslist.org/cto/d/1979- >>>>>>>> >>>>>>>> mercedes-benz-300sd-very/ >>>>>>> >>>>>> 6612681421.html >>>>>> >>>>>> Sent from my iPhone >>>>>>>> >>>>>>>> _______________________________________ >>>>>>>> http://www.okiebenz.com >>>>>>>> >>>>>>>> To search list archives http://www.okiebenz.com/archive/ >>>>>>>> >>>>>>>> To Unsubscribe or change delivery options go to: >>>>>>>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>>>>>>> >>>>>>>> _______________________________________ >>>>>>>> >>>>>>> http://www.okiebenz.com >>>>>> >>>>>> To search list archives http://www.okiebenz.com/archive/ >>>>>> >>>>>> To Unsubscribe or change delivery options go to: >>>>>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>> Fred Moir >>>>> Lynn MA >>>>> Diesel preferred >>>>> _______________________________________ >>>>> http://www.okiebenz.com >>>>> >>>>> To search list archives http://www.okiebenz.com/archive/ >>>>> >>>>> To Unsubscribe or change delivery options go to: >>>>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>>>> >>>>> >>>>> _______________________________________ >>>>> >>>> http://www.okiebenz.com >>>> >>>> To search list archives http://www.okiebenz.com/archive/ >>>> >>>> To Unsubscribe or change delivery options go to: >>>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>>> >>>> >>>> >>>> _______________________________________ >>> http://www.okiebenz.com >>> >>> To search list archives http://www.okiebenz.com/archive/ >>> >>> To Unsubscribe or change delivery options go to: >>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>> >>> >>> _______________________________________ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> >> > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
