 Fuel injection fuel pump question |
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| LCOX |
 Jun 5 2015, 04:46 PM
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#1
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Member  Group: Members Posts: 93 Joined: 19-December 09 From: Pinnacle Member No.: 11,148 Region Association: None  |
Does anyone know if I can use a later 2 port fuel injection fuel pump used on later 1975-76 injection systems on the earlier 1973 2.0 injection system that originally used the earlier 3 port fuel pump? Thanx L
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| malcolm2 |
Jun 5 2015, 05:17 PM
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#2
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Advanced Member Group: Members Posts: 2,745 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States 
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QUOTE(LCOX @ Jun 5 2015, 05:46 PM)  Does anyone know if I can use a later 2 port fuel injection fuel pump used on later 1975-76 injection systems on the earlier 1973 2.0 injection system that originally used the earlier 3 port fuel pump? Thanx L Must be D Jet. I am gonna say NO. L Jet had 2 ports and maybe different pressure. Sorry a vague answer is as good as no answer. But d jet has 3 for a reason. |
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| reharvey |
Jun 5 2015, 05:31 PM
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#3
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Senior Member Group: Members Posts: 573 Joined: 16-July 08 From: N. E. Ohio Member No.: 9,308 Region Association: North East States |
I've used two port pumps on 5 of my 2.0 D-Jet cars without any issues. The two port pumps can be bought from just about any parts store. They are priced from $30 to $300 bucks so take your pick. I have a cheap one stored in my car as a backup. Ray
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| worn |
Jun 5 2015, 05:39 PM
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#4
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can't remember Group: Members Posts: 3,154 Joined: 3-June 11 From: Madison, WI Member No.: 13,152 Region Association: Upper MidWest
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QUOTE(malcolm2 @ Jun 5 2015, 04:17 PM) QUOTE(LCOX @ Jun 5 2015, 05:46 PM) Does anyone know if I can use a later 2 port fuel injection fuel pump used on later 1975-76 injection systems on the earlier 1973 2.0 injection system that originally used the earlier 3 port fuel pump? Thanx L Must be D Jet. I am gonna say NO. L Jet had 2 ports and maybe different pressure. Sorry a vague answer is as good as no answer. But d jet has 3 for a reason. 1975-76 2.0 cars are d-jet. (IMG:style_emoticons/default/confused24.gif) . AFAIK they interchange. The third hose is, to my sort of knowledge, a way of cooling the pump. This was circumvented in later years in the manufacture of internal lines within the pump for the last two model year. Actually, last model year, since my 76 was made in 1975 and was a left over. Move to CIS and the pressure goes up, so those pumps will not work. In truth anything that will deliver the 28 psi and proper volume that you can hook up and fit should do the trick. I wish there were a JEGS or Summit for Porsche! |
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| boxsterfan |
Jun 5 2015, 05:49 PM
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#5
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914's are kewl Group: Members Posts: 1,776 Joined: 6-June 03 From: San Ramon, CA Member No.: 791 Region Association: Northern California |
Bosch 69133 2-port fuel pump. Available at most of your FLAPS.
Supply from tank to pump. Pump to your motor. On the return to tank, throw away the y-connector and send the return right back to the tank. |
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