inmocean Posted March 19, 2011 Share #1 Posted March 19, 2011 78 280Z, 9000 miles on engine rebuilt to stock. Only mods are twice pipes and K+N air intake.While wiping down and inspecting my engine bay I noticed the plastic portion of my original Cold Start Injector (CSI) was slightly loose where it met it's metal base. I've gone too far under the hood to stop now, so I ordered a replacement, although I tempted fate by getting one from Ebay...The new CSI has it's fuel inlet in the correct alignment, however the fuel nozzle (where it enters the intake manifold) is shorter than my original, and the fuel outlet is straight down instead of aft, like my original. I installed it anyway, and the car runs fine through its warm-up cycle, but I'm wondering if this Ebay gamble failed...MSA shows a match for my original CSI, do I need to order it or is the slightly different replacement acceptable?Thanks Link to comment https://www.classiczcars.com/topic/38961-cold-start-injector-differences/ Share on other sites More sharing options...
inmocean Posted March 19, 2011 Author Share #2 Posted March 19, 2011 thought I'd add a photo of old CSI along with drawing of replacement CSI and the spray location. arrows indicate where nozzle is on old CSI, (parallel to inlet) Thanks Link to comment https://www.classiczcars.com/topic/38961-cold-start-injector-differences/#findComment-349950 Share on other sites More sharing options...
sblake01 Posted March 19, 2011 Share #3 Posted March 19, 2011 I'm sure it will be fine. I had one like your old one in my Z and one like your new one in my 810. Neither of them ever gave me any problems. Link to comment https://www.classiczcars.com/topic/38961-cold-start-injector-differences/#findComment-349951 Share on other sites More sharing options...
inmocean Posted March 19, 2011 Author Share #4 Posted March 19, 2011 Short of addressing the post to you sir, this post was really meant for your expertise. thanks again. Link to comment https://www.classiczcars.com/topic/38961-cold-start-injector-differences/#findComment-349956 Share on other sites More sharing options...
kjphilippona Posted April 11, 2011 Share #5 Posted April 11, 2011 What then is the difference between the two CSI's that are listed at rock Auto to work on my 77 280z. (1) CJ33 (2) CJ47 ? Link to comment https://www.classiczcars.com/topic/38961-cold-start-injector-differences/#findComment-352394 Share on other sites More sharing options...
zKars
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