ucw458 Posted September 21, 2013 Report Share Posted September 21, 2013 Does anyone have flow test results for stock injectors they sent out to be cleaned? I'm looking for 83-86 and 87-89 flow results. I want to get a few different poeple who have these results to post so we can average them together and get specific #s on what stock injectors flow. I've heard lots of estimates over the years but I'm interested in actual flow test data. Thanks Link to comment Share on other sites More sharing options...
tsi_tom Posted September 21, 2013 Report Share Posted September 21, 2013 1988 Conquest Black injector http://i1069.photobucket.com/albums/u467/tsi_tom/The%20Missouri%20Project/Fuel%20System/ConquestBlackInjector_zpse777a7a2.jpg Green injector http://i1069.photobucket.com/albums/u467/tsi_tom/The%20Missouri%20Project/Fuel%20System/ConquestGreenInjector_zpsd4309fac.jpg Link to comment Share on other sites More sharing options...
ucw458 Posted September 22, 2013 Author Report Share Posted September 22, 2013 Perfect. That's exactly the type of stuff I'm looking for. Interesting results. I ran some 650/1050 delphi replacements. My MPG went down after I installed them. Link to comment Share on other sites More sharing options...
ucw458 Posted September 24, 2013 Author Report Share Posted September 24, 2013 Anyone else? Link to comment Share on other sites More sharing options...
scott87star Posted September 24, 2013 Report Share Posted September 24, 2013 Back when I was working out the staging in megasquirt for a factory TBI application I noticed a big AFR change when the secondary came in using the factory quoted flow rates on the primary/secondary staging factor. Quick definition, the staging factor is the ratio of the flow of the primary over the total of both, its important to get right to make the transition smooth. So, knowing the flow as stated from the factory was not correct I built a test rig, at 40 psi the primary flowed higher than 580, more like 620 give or take 10, and the secondary actually flowed less than 1050, closer to 980. Using those numbers for a new staging factor the transition was smooth as glass. Sorry I can't offer any hard data, this was four or five years ago now. Link to comment Share on other sites More sharing options...
Shelby Posted September 24, 2013 Report Share Posted September 24, 2013 both injs only operate at full boost and high rpms,,i have not found any spacific rpms or boost levels where the pri comes back into play in the FSM Link to comment Share on other sites More sharing options...
StarquestRescue Posted September 24, 2013 Report Share Posted September 24, 2013 http://www.starquestclub.com/forum/index.php?showtopic=102407&hl=injector Scotts post. Per tep " The 87-89 used a primary of about 580 cc and a secondary of about 1000 cc. We say "about" because we have flowed the same part number injectors new from Mitsubishi and gotten different results every time. This seems to be a large part of the performance inconsistency between even the same year cars" 580/1000 is about what mine tested at. A local shop cleaned a set and came up way lower #. When I quizzed them about it, there equipment was set to a much lower pressure than the industry standard of 43.5 psi. So the #'s are only as good as the calibration of the equipment. Link to comment Share on other sites More sharing options...
scott87star Posted September 24, 2013 Report Share Posted September 24, 2013 Excellent, thanks. Shows my memory is only slightly flawed, lol. Link to comment Share on other sites More sharing options...
tsi_tom Posted May 5, 2015 Report Share Posted May 5, 2015 I sent four injectors to RC Engineering. Two were leaking externally. Two passed. Black injector http://i1069.photobucket.com/albums/u467/tsi_tom/The%20Missouri%20Project/Fuel%20System/Conquest%20RC%20Fuel%20Injector%20Cleaning%20Conquest%20Black%20Injector_zpsn2qbrve3.jpg Green injector http://i1069.photobucket.com/albums/u467/tsi_tom/The%20Missouri%20Project/Fuel%20System/Conquest%20RC%20Fuel%20Injector%20Cleaning%20Conquest%20Green_zps6qmbrm92.jpg Link to comment Share on other sites More sharing options...
Funky Phil Posted May 5, 2015 Report Share Posted May 5, 2015 Take note of the 43psi test pressure. Thats also gonna throw off how they perform on a stock setup. Link to comment Share on other sites More sharing options...
tsi_tom Posted May 5, 2015 Report Share Posted May 5, 2015 Hmmm, I see that. I have the first set in my car. They seem ok but I don't have a wide band. I don't think they can change the injector, just clean it. What are your thoughts Phil? Link to comment Share on other sites More sharing options...
Funky Phil Posted May 5, 2015 Report Share Posted May 5, 2015 stock regulator base psi is 38psi. Less pressure is gonna effect flow rate. Link to comment Share on other sites More sharing options...
tsi_tom Posted May 6, 2015 Report Share Posted May 6, 2015 Does the manual state the original injector flow rate? Link to comment Share on other sites More sharing options...
ucw458 Posted May 9, 2015 Author Report Share Posted May 9, 2015 Using this calculator,http://www.rceng.com/technical.aspx It looks like the 1050cc green injector drops to 981cc @ 38 psi. And the 600cc black drops to 560cc @ 38 psi. So replacing stockers with 600/1050cc will be in the ball park for flow rate. Only issue is will spray pattern and dead time skew the results. Link to comment Share on other sites More sharing options...
tsi_tom Posted May 9, 2015 Report Share Posted May 9, 2015 Somewhere Indiana showed a picture of the base pressure increasing during boost. I looked for the picture but can't find it. Link to comment Share on other sites More sharing options...
Funky Phil Posted May 9, 2015 Report Share Posted May 9, 2015 yeah, 1:1 rise. So it would need to hit 5psi to flow that much. Link to comment Share on other sites More sharing options...
tankbob Posted May 11, 2015 Report Share Posted May 11, 2015 Mine came back at 980 and 604, Ill try and find the data sheets. Link to comment Share on other sites More sharing options...
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