DIY_EFI Digest Tuesday, August 17 1999 Volume 04 : Number 474 In this issue: Re: FI Fuel Filters Re: DIY_EFI Digest V4 #473 Re: DIY_EFI Digest V4 #473 Re: DIY_EFI Digest V4 #473 See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Tue, 17 Aug 1999 06:39:29 -0400 From: Shannen Durphey Subject: Re: FI Fuel Filters > Date: Mon, 16 Aug 1999 23:59:42 -0700 > From: "John Dammeyer" > Subject: FI Fuel Filters > > Hi All, > > Can anyone tell me the benefits of installing a high pressure fuel > filter on the outlet of the pump verses a low pressure filter on the > suction side of the pump? Obviously this is an external pump and is > mounted some distance from the tank. pressure side filter is to trap particles. Suction side filter must be fairly free flowing, more so if there's no low pressure supply pump. Restriction on the suction side makes for aeration and dry pumps pretty easily. Even with low pressure supply pump, filter media shouldn't be too fine. But there should still be something there to trap small pieces of grit and protect the pump. > My feeling is that the filters on the > pressure side have, in essence, smaller holes because there is more > pressure available to force the fuel through the filter. In essence. > > I'm trying to win a discussion. Well in that case, get very loud and repeat "I don't care what you say, I'm right." It has worked for me... : ) Shannen > Thanks, > > John > ------------------------------ Date: Tue, 17 Aug 1999 10:30:21 EDT From: Mikepoore@xxx.com Subject: Re: DIY_EFI Digest V4 #473 In a message dated 8/17/99 5:40:53 AM Eastern Daylight Time, DIY_EFI-Digest-Owner@xxx.edu writes: > Can anyone tell me the benefits of installing a high pressure fuel > filter on the outlet of the pump verses a low pressure filter on the > suction side of the pump? Obviously this is an external pump and is > mounted some distance from the tank. The obvious reason is that it's a lot easier to replace a filter that's not inside the fuel tank. Secondly, it's customary to place a filter after the pump to remove any debris generated by the pump. Even carb. engines had a small filter between the pump and carb. I don't think pressure has anything to do with it. And don't forget there is actually two filters in most systems including the strainer in the tank, which in essence is a filter. ------------------------------ Date: Tue, 17 Aug 1999 09:32:08 -0500 From: nacelp@xxx.com (CSH-HQ) Subject: Re: DIY_EFI Digest V4 #473 >From: "John Dammeyer" >Subject: FI Fuel Filters The best way to do it is with a seperator (ie sediment bowl) betwween the tank, and pump and then a filter between the fuel pump and engine. The pump needs to be close to the tank, and perferably below the tank. Also, best to siphon feed the pump. And proper lines, and diameters. Bruce > >Can anyone tell me the benefits of installing a high pressure fuel >filter on the outlet of the pump verses a low pressure filter on the >suction side of the pump? Obviously this is an external pump and is >mounted some distance from the tank. > >I'm trying to win a discussion. My feeling is that the filters on the >pressure side have, in essence, smaller holes because there is more >pressure available to force the fuel through the filter. > >Thanks, > >John ------------------------------ Date: Tue, 17 Aug 1999 11:17:40 PDT From: "Douglas Wright" Subject: Re: DIY_EFI Digest V4 #473 I replied to a post yesterday and have not seen it show up in any digest. Is the list moderated in some way that my post was removed? thanks, dug ------------------------------ End of DIY_EFI Digest V4 #474 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".