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ok mister running a large injector will put them out of sync with the valves lmfao
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yea that was a brain fart..i'll admit it...but you try taking two calls, calling them in as impounded to PD, releasing a car over 6000lbs that was dollied and the people want to know why it was $250 and thinking about fuel system tech all at the same time. then do that 8-8 every day and see if you dont **** up...that actually came from my specific build. i'm having a problem with the cam cause it has no cam sensor pick up on it. so the injectors are firing all willy nilly.
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but back to my original point running a 60# injector and only needing 42;s will not make it run lean or be inefficiant
i donno u but id rather have a big injector then not enough |
:orlyflag: :dancinglock:
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to an extent...if your duty cycle is to low they will spit, if its too high they will spit I worked mine out to run at 75-80% at stock fuel pressure.
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i realize this but i just don't give a *****
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not if the fp is right,and the only issue may be idle tunning if the injectors are to large u cant get the pulse width low enough.
if the injectors are to oversized u wont be able to open and close them fast enough,basically u will just crack them open resulting in poor idle and very hard tunability an lt1 needs a 50# injector open 9.2 msec for 100% ve at wot add in the 1.1 msec opening timeand u have a 10.3 msec pulse width thats without any enrichment running a 14.7 afr now for 12.0 afr that would be closer to 12.3 msec or about 42% duty cycle on the na motor bring that down to idle and ur looking around a 1.5 msec pw at idle + the 1.1msec opening time plenty of time to allow for idle tunning even though it is a lil on the low side by about .7 msec idle pw shoudl be around 2.3 msec without opening time for ease of tunning the mixture,with low pw time the only thing that happens is an enrichment in the ve bin becomes exaggerated a 1% increase in the table could actually become a 4% increase in injector flow or decrease depending on which way ur going but at idle ur already dropping fp when vacum is aplied to the regulator as long as u have an adjustable fpr its fine u can just take out an additional 1-3 psi of fp at idle but 50's are well within the range of being tunable at idle something like say a 60 or 70 pound injector would make for hell trying to tune at idle with ultra short pulse widths |
Nice job Dave....glad to see the car is finally starting to come together and put down the numbers.
- Justin |
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42% is not much of a duty cycle and certainly not with in the range that an injector will be efficient. 60# at 42% is also not equal to 50# at 100% unless the fuel pressure referenced is massively different.
Sounds like you just decided to over complicate things with a Vafpr that you didn't need and the wrong sized injectors that you most likely picked up with all of the other second hand stuff you used in the super combo. |
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funny funny....which one of your cars runs again?
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Ron had his T/A at the Roadhouse.
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this comes from somebody who demolished 2 of them! :nod: :lol: |
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and the camaro being a bastard right now she'll be out to play soon enough |
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a yea and a few months, and I know what the car looked like when I got it, and when it was wrecked...your ****ing crazy if you think it was better the way it was
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internet fights!!! ....ducks....
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What happened to the geometry guy and his 65 degree six banger?
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i didn't say you were making **** up...but when I got the car it was faded black with ****ed up GFX
http://http://img369.imageshack.us/i...mgp4556bx2.jpg does that look "worse" to you? that and it went from a high 15s car to a 13s car that doesn't consitute worse to me |
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