[Diy_efi] fuel injector limits?
Fri Aug 18 03:56:10 UTC 2006
I've done the math... I used a desktop Dyno to get as close to my motor as I could (many hours of tweaking), and came up with 270 hp (in my 4.1L Buick V6 race motor). The math says that a 24 lb injector is right at the limit of 270 hp. I have several questions about this.
1. I'm guessing that the desktop dyno will show a little more hp than I can actually get, right?
2. Injectors that are too big cause problems with idle and lower rpm tuning etc... How much bigger is "too big"? Will a 30lb injector be too big?
3. I found a 27lb injector at fiveomotorsport.com but I don't know what pressure that rating came from. Thoughts?
4. How long can you run an injector at 85% duty cycle before it starts to get wear out.
Last and most important question. What do I buy 24#, 27#, or 30#??
I'm currently converting it to EFI using a 1227727 and 3.8L MPI intake. I like a challenge and the details of this project are definitely challenging me. Details, details! Thanks!
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