Subject: RE: Oil Filter for a loop
Author: peha-@comcast.net
Date: Jan 12, 2005, 9:36 AM
Post ID: 1718197485
Greg: Most oil bypass valves are on the pressure side or downstream of the pump. The bypass opens and oil flows to the engine without filtration. At least you have oil. The device we are discussing has the filter on the SUCTION side of the pump. I doubt there is any way to create a bypass for filter clogging.
Mind you, this is all speculation. This guy designed it and it may work, provided you keep the oil and filter changed religiously. I have no direct information. I only wonder about the design.
Patrick
| Your free subscription is supported by today's sponsor: ------------------------------------------------------------------- Show your pride with a free* USA T-shirt. Click here to confirm your address. http://click.topica.com/caac2N5b1dfltb1o6faa/PermissionData ------------------------------------------------------------------- Hi Patrick, Good thoughts you have here. If I'm understanding you correctly, you see the main problem with this unit as the lack of an oil bypass. That is problematic and something that would need to be addressed as the engine cannot be starved of oil. But I'm still interested in this overall design because it would be very easy to install and wouldn't require new front main bearings or a different oil pan, plus all the machining that needs to be done with Dave Richardson's approach. If an engine were disassembled, Dave's approach would probably be the preferred one. But on an assembled and running engine, it would be nice to have a bolt on fix. I'm not sure which type of oil (dyno or synthetic) he recommends nor the change interval. If an oil bypass was installed, then I don't think it would matter which type of oil was used. Without an oil bypass, however, I would think that synthetic would be preferred simply because it is thinner when cold and would probably pass through the filter medium better. As for change interval, I *think* the first filtered models recommended 3,000 mile oil changes and 9,000 mile filter changes (every third oil change). My 2000 Quota recommends synthetic oil and filter change every 6,000 miles. I think there is probably a range of acceptable miles for the oil/filter changes. I personally like the 6,000 mile interval because it is easy for me to remember when to change all my fluids (engine, trans, rear drive)...but there is nothing scientific about that. Without having the part in hand, it's difficult to know how it might be altered to provide an oil bypass. If I understand the Guzzi system, bypass is provided by a spring inside the UFI filter. If I'm wrong, somebody please correct me. If that's the case, then perhaps the center bolt that holds the filter on might be designed and machined in such a way as to provide a spring loaded oil bypass system. Of course, this all requires designing, machining, and measuring capabilities that my garage does not have. But, in my opinion, it's an intriguing idea that holds definite promise. Patrick Hayes wrote:
Regards, Greg Bender 1971 Ambassador 2000 Quota http://www.thisoldtractor.com/gtbender Your free subscription is supported by today's sponsor: ------------------------------------------------------------------- How about a cruise on your favorite cruise line-from us? Click here. http://click.topica.com/caac2NYb1dfltb1o6faf/PermissionData ------------------------------------------------------------------- |