---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Mon 05/25/20: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:34 AM - Re: Spark plugs and heat range (rvdave) 2. 06:02 AM - Re: Re: Spark plugs and heat range (Kelly McMullen) 3. 12:18 PM - Re: Spark plugs and heat range (Vol88) 4. 12:29 PM - Re: Re: Spark plugs and heat range (Tim Olson) 5. 12:31 PM - Re: Re: Spark plugs and heat range (Kelly McMullen) 6. 02:00 PM - Re: Spark plugs and heat range (Bob Turner) ________________________________ Message 1 _____________________________________ Time: 01:34:45 AM PST US Subject: RV10-List: Re: Spark plugs and heat range From: "rvdave" Ok thanks for the info, Ill be taking a closer look at this. -------- Dave Ford Cadillac, MI Read this topic online here: http://forums.matronics.com/viewtopic.php?p=496491#496491 ________________________________ Message 2 _____________________________________ Time: 06:02:30 AM PST US From: Kelly McMullen Subject: Re: RV10-List: Re: Spark plugs and heat range If you don't cut down the air dam in front of the #2 cylinder, it blocks any direct ram air against the nozzle on #2. You want to preserve as much of that air dam as possible, to direct as much air as you can to #6 and the oil cooler, since # 6 is likely to be your hottest cylinder. I can tell right away that spring is here when my oil temp starts moving above 180 in cruise. Sent from my TRS-80 Model 100 On Sun, May 24, 2020 at 9:09 PM rvdave wrote: > > Wondering how critical it is for the =98A=99 to be pointed =98down=99 since that > in itself is relative to the slight angle of the injector body. Could it > be that some injectors are receiving ram pressure instead of atmospheric > pressure or am I just overthinking this? What did you mean by an air da m > that could disturb the air? > > -------- > Dave Ford > Cadillac, MI > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=496489#496489 > > =========== =========== =========== =========== =========== > > ________________________________ Message 3 _____________________________________ Time: 12:18:21 PM PST US Subject: RV10-List: Re: Spark plugs and heat range From: "Vol88" >From Lycoming Service Instruction No. 1275C "Cleaning Fuel Injector Nozzles": In normally aspirated engines where the nozzles, P/N LW18265 (see Figure 2), are installed horizontally, particular attention must be paid to the identification marks stamped on one of the hex flats on the nozzle body. This mark is located 180 from the air bleed hole and must appear in the lower side of the nozzle to assure that the airbleed hole is on top in order to reduce fuel bleeding from this opening just after shutdown. To ensure nozzle is correctly torqued, tighten the nozzle to 60 in.lbs. torque. Then continue to tighten until the letter or number stamped on the hex of the nozzle body points downward. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=496502#496502 ________________________________ Message 4 _____________________________________ Time: 12:29:15 PM PST US Subject: Re: RV10-List: Re: Spark plugs and heat range From: Tim Olson Good clarification. So the bleed hole is opposite of the identification mark stamp, thus when we put the mark down, the air bleed is up. Tim On 5/25/2020 2:17 PM, Vol88 wrote: > > >From Lycoming Service Instruction No. 1275C "Cleaning Fuel Injector Nozzles": > > In normally aspirated engines where the nozzles, P/N LW18265 (see Figure 2), are installed horizontally, particular attention must be paid to the identification marks stamped on one of the hex flats on the nozzle body. This mark is located 180 from the air bleed hole and must appear in the lower side of the nozzle to assure that the airbleed hole is on top in order to reduce fuel bleeding from this opening just after shutdown. To ensure nozzle is correctly torqued, tighten the nozzle to 60 in.lbs. torque. Then continue to tighten until the letter or number stamped on the hex of the nozzle body points downward. > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=496502#496502 > > ________________________________ Message 5 _____________________________________ Time: 12:31:39 PM PST US From: Kelly McMullen Subject: Re: RV10-List: Re: Spark plugs and heat range I would exercise extreme care, because over-tightened nozzles are a bear to remove, and some experts believe can lead to head cracking in that area. AirFlow performance gives a spec of 40 in/lbs to no tighter tan 60 in/lbs. You sure don't want to bugger one up by over-tightening. Sent from my TRS-80 Model 100 On Mon, May 25, 2020 at 12:22 PM Vol88 wrote: > > >From Lycoming Service Instruction No. 1275C "Cleaning Fuel Injector > Nozzles": > > In normally aspirated engines where the nozzles, P/N LW=C2=AD18265 (see F igure > 2), are installed horizontally, particular attention must be paid > to the identification marks stamped on one of the hex flats on the nozzl e > body. This mark is located 180=C2=B0 from the air bleed hole and must app ear in > the lower side of the nozzle to assure that the air=C2=ADbleed hole is on top in > order to reduce fuel bleeding from this opening just after shutdown. > To ensure nozzle is correctly torqued, tighten the nozzle to 60 > in.=C2=ADlbs. torque. Then continue to tighten until the letter or number > stamped on the hex of the nozzle body points downward. > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=496502#496502 > > =========== =========== =========== =========== =========== > > ________________________________ Message 6 _____________________________________ Time: 02:00:12 PM PST US Subject: RV10-List: Re: Spark plugs and heat range From: "Bob Turner" Thank you, Vol88, for reminding me of the actual instructions. Note the arrow doesn't have to point exactly down: anywhere within a 180 deg of arc of "not up" will suffice to minimize fuel dripping out after shutdown. If you're concerned with ram air hitting the opening, you could point the arrow down and slightly forward. Like Kelly, I didn't want to over torque these things. I stopped at 40 in-lbs if the arrow was down. If necessary I went to 60. If that didn't work, I removed the whole thing, cleaned the treads with a toothbrush and tried again. That usually worked! -------- Bob Turner RV-10 QB Read this topic online here: http://forums.matronics.com/viewtopic.php?p=496508#496508 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv10-list Browse Digests http://www.matronics.com/digest/rv10-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.