Cheapest Fuel Pump?
11-20-2008 | 11:22 AM
#31
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Joined: Jan 2003
Posts: 16,839
Likes: 897
From: Double Oak, TX
So my logic (based on what I am reading) tells me that the 87 to 88 pump at $160 will be OK on 80 through 95 cars as long as they are not CIS - yes?
Any fitting issues?
Any fitting issues?
__________________
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
11-20-2008 | 12:20 PM
#32
Rennlist Member
Joined: Feb 2003
Posts: 29,956
Likes: 180
From: saratoga, ca
I dont even think 2 pumps could do this. the RRFR will open and keep pressure from building. you could just cycle the fuel more. 
the O44 pump is for the 87 S4? Thats the bosch number, right?
mk
the O44 pump is for the 87 S4? Thats the bosch number, right?
mk
11-20-2008 | 03:40 PM
#34
Nordschleife Master
Joined: Apr 2003
Posts: 9,600
Likes: 34
From: Abbotsford B.C.
Mark, 2 pumps would probably raise the fuel pressure as the orifices are too small for that much flow. That said it would require alot of other work, ie another high pressure fuel hose to the front.
And Rog, the answer to your question is yes the pump can be used
but I dont know about any fitment issues, (mainly on the earlier cars) I do know that 85-88 it will definetly bolt right in.
but if you have all the other pumps just verify that the outlet threads are the same and then they all should work, though they MAY have to reuse their origonal check valve that is on the pump.
And Rog, the answer to your question is yes the pump can be used
but I dont know about any fitment issues, (mainly on the earlier cars) I do know that 85-88 it will definetly bolt right in. but if you have all the other pumps just verify that the outlet threads are the same and then they all should work, though they MAY have to reuse their origonal check valve that is on the pump.
11-21-2008 | 07:29 PM
#35
Thread Starter
Pro
Joined: Nov 2007
Posts: 598
Likes: 0
From: Philadelphia, PA , USA The Great Fighting City of Brotherly Love
This is what we're looking for. Doesn't the pressure regulator handle the variation??? I think the same pump in my 928 is interchangeable with my 930 and it's a CIS. This is the question: For $109 + $10 Shipping, my 86.5 runs fine... I wonder how it works on an S4.
