 Fuel: Pre-filter? |
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| Danny_Ocean |
 Jul 3 2007, 12:55 AM
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#1
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Member  Group: Members Posts: 170 Joined: 27-June 07 From: Fort Lauderdale, FL Member No.: 7,846 Region Association: South East States  |
914-6 w/2.4 '72 911 "T" motor, MFI
The previous owner of my car (let's call him "Bubba") installed a regular plastic in-line fuel filter between the tank and the fuel pump. The factory fuel filter is upstream (between fuel pump and injector pump). Is this "pre-filter" necessary? Looks like one big fuel leak waiting to happen. (IMG:style_emoticons/default/blink.gif) |
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| Katmanken |
Jul 4 2007, 02:13 PM
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#2
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You haven't seen me if anybody asks... Group: Members Posts: 4,738 Joined: 14-June 03 From: USA Member No.: 819 Region Association: Upper MidWest |
Bubba is a pretty smart guy.
Personally, I like a filter between the tank and pump to filter out crap. That way, the crap can't chew up the expen$ive pump. When the pump is running, it is sucking fuel from the tank and the line is at a small negative pressure and unlikely to leak. When the pump is stopped, there is only a small amount of head pressure from the weight of the fuel, and worst case is a drip. After the pump, you have PRESSURE. And when the pressure side leaks, it is much more spectacular, particularly when the jet of pressurized fuel hits something hot or electrical.... Ken |
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| Danny_Ocean |
Jul 4 2007, 04:09 PM
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#3
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Member Group: Members Posts: 170 Joined: 27-June 07 From: Fort Lauderdale, FL Member No.: 7,846 Region Association: South East States |
QUOTE(kwales @ Jul 4 2007, 04:13 PM)  Bubba is a pretty smart guy. Not when he uses a plastic filter that hangs down under the car and secures it only with (cheap) hose clamps. Thanks for the advice. Seeing the other (canister-type) filter upstream, I figured the pump only "passed-through" the fuel and didn't require filtering. The "Bubba Job" looks home-made and hence, suspicious. |
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Posts in this topic
Danny_Ocean Fuel: Pre-filter? Jul 3 2007, 12:55 AM
rhodyguy no bigger leak potencial than the single filter i ... Jul 3 2007, 12:59 AM
Danny_Ocean
no bigger leak potencial than the single filter i... Jul 3 2007, 07:56 AM toon1
no bigger leak potencial than the single filter ... Jul 3 2007, 08:54 AM Danny_Ocean
What's an injector pump?
The belt-drive... Jul 3 2007, 11:59 PM toon1 Iv'e never seen anything like that before.
... Jul 4 2007, 10:55 AM Danny_Ocean
Iv'e never seen anything like that before.
... Jul 4 2007, 11:00 AM Cap'n Krusty For stock applications, I recommend (and use) a me... Jul 4 2007, 03:17 PM Danny_Ocean
For stock applications, I recommend (and use) a m... Jul 4 2007, 04:11 PM Cap'n Krusty The hose fits at the end of the plastic line after... Jul 5 2007, 09:55 AM Joe Ricard Bubba's real name is not important.
But we all... Jul 5 2007, 10:10 AM DonTraver I use a coarse filter from the fuel tank to pump a... Jul 5 2007, 10:31 AM Joe Ricard Agreed. with stirred up under ground tanks. Jul 5 2007, 11:34 AM |
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