Capt. Perry, Did you ever "check into that"? My Detroit Diesels (8.2L, 4-cycle V8s) came with Luber-Finer F170 primary filters. I have purchased Baldwin elements for them (PF7597), but I have know idea what the pore size is. Anyway, I have purchased two Racor 500MA filters to replace the Luber-Finer F170s. I went ahead and bought a case of replacement elements of the 2 micron size. Now that I have been reading this thread, I'm thinking that I will watch the vacuum gage carefully and change the filters regularly and then switch to the 10 micron elements. I read on another thread that DDs sent 70% of the fuel that is taken in, back to the tanks (the head cooling fuel). I have not been able to determine the actual fuel flow of my engines. I hope it is less than the 60 gallons per hour that the Racors are designed for. DavidO
--- On Mon, 4/27/09, Perry & Cindi <[email protected]> wrote: From: Perry & Cindi <[email protected]> Subject: [UnifliteWorld] Re: RACOR filter question To: [email protected] Date: Monday, April 27, 2009, 9:56 AM I will check into that. If that is correct than a lot of commercial and pleasure boats that we work on over the last 20 years should have been having problems, which they have not had. Most of our engines we work on are Cummins, Cats and Detroit’s. Capt. Perry From: [email protected] [mailto: [email protected] ] On Behalf Of Ross Robertson Sent: Monday, April 27, 2009 11:47 AM To: [email protected] Subject: [UnifliteWorld] Re: RACOR filter question Considerations from the other side of the world and in the boonies -- or Jakarta .. 38ft aft cockpit 2 x 671s ( just turboed to 325 shp.) Our diesel fuel arrives foul. mud, water, bugs....etc. My 2 6-71s had old racor filters when I bought the boat. no glass filter bowls etc etc.. tanks with bottoms covered in asphalt ...I buy Passagemaker magazine when I can find it and it has really good tech articles and discussions. To cut a long story short, now I have a home made fuel polishing system ... Oberdorfer 12vdc brushless motor/ gear pump.3 gallons minute. Racor filters, the large marine ones.. sorry don't have the references to hand and I polish with 2 micron filter elements. For each engine now I have Davies filters, their oem name: sold to me by DD when they had a sale. -- They are actually Fleetmaster. I really like them because the filter cartridges are set in a transparent dome ON TOP of the filter body. . As the filters clog up the diesel fuel level rises in the dome, thus it is easy to see the clogging/clogged state of the filters and when to change. As they are FLEETMASTER , filter elements are readily aveilable. I use 2 micron elements in these. I don't use any 2ndary filters. This set up seemed OK, without fuel clogging problems. Then I contacted Floscan to investigate fitting a system. I received very firm advice to run 30 microns in the primary filters and 10 microns in the screw-ons. I was advised that with a 2 micron system I ran the risk of the injectors over heating as there was not enough fuel circulating to cool them, also I was putting the fuel pump under too much stress. Anybody out there like to comment I sure am confused....... Cheers Ross From: [email protected] To: [email protected] Subject: [UnifliteWorld] Re: RACOR filter question Date: Wed, 15 Apr 2009 15:04:27 +0000 I have been using the 10's for about eight years. Started out with the 30's but let let far too much stuff through and plugged up the cannister type secondary which we changed to a Detroit spin on. The cannister type was really difficult to change. When we purchased our boat it had not been run much and it had a lot of stuff in the tanks that really got shook in the Jaun De Fuca straights. It was a three day trip from Olympia to the Columbia River mouth. Since that time the last Racors I had to change was last summer when I got that guilty feeling and changed them after 6 years of service. The fuel we have been getting is much cleaner that what was in the boat at time of purchase. We also had a leak around the flybridge hatch which we solved with an enclosure.We also put new rubber backed outdoor carpet down without gluing which has worked quite well. Can't even think how bad it would be to get an engine out of this boat having to nearly disassemble the headliner,drop the chart table,remove bridge carpet lift the hatch out and on and on and on. Make me weak kneed just thinking of it. Have Fun Jim -------------- Original message from tomdepot <[email protected]>: -------------- > > > Jim and Capt. Perry, > > I swear that I have read that using anything but the 30 micron at the > Racor starves the fuel system and puts too much strain on the fuel > pump. I looked for this claim but was unable to find it on Pascoe's > website, where I thought I read it. How long have you guys been using > the 10 micron filters? Years? I am using 30's and then 3's at the > engine. > > Do you think this use of filter can vary with engine type? > > Thanks, > Tom in Florida > </html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.287 / Virus Database: 270.12.4/2082 - Release Date: 04/27/09 06:19:00 --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/UnifliteWorld?hl=en -~----------~----~----~----~------~----~------~--~---
