FI Pump Question

tomking · 01-04-2004

I have a question for those who have done the FI conversion. What are the specs for the fuel pump needed? flow rate and pressure? Plus what is a good, but low cost fuel pump to use for same? I did several searches but didnt find the answer. Thanks.

GTJIM · 01-04-2004

My 1975 to 81 Opel B Series manual says:

Regulated pressure ....... 42 +- 3 lbs/sq in (3 +- 0.2 bar)

Output ....... 1.5 to 2.0 litres/min

That is the regulated pressure in the fuel rail so I can only guess that the actual pump would be capable of a higher pressure and it is controlled by the regulator in the feed back line.

You will probably find that the GM "J" Car series have a suitable in-line pump as they use Bosch based injection systems too.
Unless the ones over there have pumps in the tank.....

ddoyle · 01-04-2004

Almost all FI GM's use a pump in the fuel tank(I can't think of one that does not). Many VWs and Audis use a frame mounted pump. Also several late 80's Fords.

DTD

baz · 01-04-2004

the "j" from europe has an inline mounted next to the tank

01-04-2004	#1 (permalink)
tomking tomking Join Date: Aug 2002 Location: SW Missouri Posts: 1,287	Unanswered: FI Question I have a question for those who have done the FI conversion. What are the specs for the fuel pump needed? flow rate and pressure? Plus what is a good, but low cost fuel pump to use for same? I did several searches but didnt find the answer. Thanks. __________________ TMK

01-04-2004	#2 (permalink)
GTJIM Old Opeler Join Date: Jun 2003 Location: New Zealand Posts: 5,686 Provided Answers: 12	FI Fuel Pressure My 1975 to 81 Opel B Series manual says: Regulated pressure ....... 42 +- 3 lbs/sq in (3 +- 0.2 bar) Output ....... 1.5 to 2.0 litres/min That is the regulated pressure in the fuel rail so I can only guess that the actual pump would be capable of a higher pressure and it is controlled by the regulator in the feed back line. You will probably find that the GM "J" Car series have a suitable in-line pump as they use Bosch based injection systems too. Unless the ones over there have pumps in the tank..... __________________ GTJim Opel Owner since last Century! Copyright © 2000-2009 J D Henry All Rights Reserved

01-04-2004	#4 (permalink)
baz opel free after 26 years Join Date: Jun 2002 Location: sunderland england Posts: 4,939 Real Name: barry williams Provided Answers: 4	the "j" from europe has an inline mounted next to the tank __________________ Copyright © 2003-2009 barry williams All Rights Reserved save praying to God for sunday today we pray to Nike and run like hell

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01-04-2004	#3 (permalink)
ddoyle Member Join Date: May 2003 Location: oakland,or Posts: 233 Provided Answers: 1	Almost all FI GM's use a pump in the fuel tank(I can't think of one that does not). Many VWs and Audis use a frame mounted pump. Also several late 80's Fords. DTD

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