hillbilly51 Posted September 13, 2014 Posted September 13, 2014 After reading this, I bought 6 used Volvo 280 155 74 (Bosch 94545556) injectors for my 88 Comanche 4.0. I got 5 from one source for $25 (delivered) that all came off the same car and had to buy a single one from another source for $13 (delivered). $38 for all 6 didn't seem too bad. I plan on cleaning them up and comparing their flow rates. What should the flow rate be for these injectors using my truck pump to pressurize the injector? I had a leak in one of the original fuel injectors about 2 years ago and replaced that injector only with a used one. I'm hoping for better fuel mileage and smoother performance We'll see. steve
hillbilly51 Posted September 14, 2014 Posted September 14, 2014 This may be handy to someone. It lists the flow characteristics of different fuel injectors. httpusers.erols.comsrweisstableifc.htm You will note that the flow rates for Bosch injectors are rated in n-Heptane verses gasohol (E85) for other makes of fuel injectors. I copied this from www. racetronics.biz for converting Bosch injectors to their rated flow in (E85) Gasohol. steve "Injector flow rates are based on testing with n-Heptane test solvent (0.6855 gml). U.S. EPA emission test gasoline 40CFR86.113 (0.735gml) flows in most common injector designs at about a 3 to 4% higher rate than n-Heptane. A ratio of 1.0351 can be used when converting the flow specifications above" (Racetronics).
Appstate97 Posted February 27, 2017 Posted February 27, 2017 Does anyone have a connection who is selling these injectors? Used is best due to my low budget build. I've looked on e b a y but am having trouble finding the 746's at #19. There's a ton of injectors that say they will fit but I like to follow the advice and grab 746's.
cruiser54 Posted February 27, 2017 Posted February 27, 2017 Is he on NAXJA? Don't think so. Ebay. These are kinda pricey... http://www.ebay.com/itm/Upgrade-jeep-4-0L-BOSCH-TYPE-III-fuel-injectors-SET-6-19lbs-EV1-19lb-19-lbs-/332071207485?hash=item4d50fc823d:g:SXAAAOSwK7FWh4Az&vxp=mtr
Appstate97 Posted February 27, 2017 Posted February 27, 2017 I'll keep an eye out and hopefully find some for cheaper.
ARareBreed Posted February 27, 2017 Posted February 27, 2017 I did hours and hours of research before getting my 4 hole Bosch injectors for my 4.0HO. I learned 0280155703 injectors are optimal for the 4.0HO.
HOrnbrod Posted February 27, 2017 Posted February 27, 2017 The "703's" are optimal according to my A/F meter for my stroker engine also. I run them at 49/39 psi.
HOrnbrod Posted February 27, 2017 Posted February 27, 2017 Yes, but Renix likes 746s. How do you know? Ever look at them using an A/F meter over varied conditions?
cruiser54 Posted March 1, 2017 Posted March 1, 2017 Yes, but Renix likes 746s. How do you know? Ever look at them using an A/F meter over varied conditions? A culmination of in the field results from a large sampling of people who tried 710s and settled on 746s.
johnj92131 Posted March 1, 2017 Posted March 1, 2017 Yes, but Renix likes 746s. How do you know? Ever look at them using an A/F meter over varied conditions? A culmination of in the field results from a large sampling of people who tried 710s and settled on 746s. OK - sounds fair enough.
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