Importance of flowmatching?
05-05-2009, 02:15 AM
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Importance of flowmatching? How important is flowmatching?
I am going to be using 42 lb green tops in my cammed car with wet shot.
I am going to be using 42 lb green tops in my cammed car with wet shot.
05-05-2009, 12:36 PM
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With a non DP wet shot, I'd rather get flow ratings, and put the 2 richest ones on the rear, where you are most likely to have a lean cylinder, and then have the other be equal.
05-05-2009, 03:19 PM
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Flow matching is important for tuning, as well as the reliability of your engine, out of the box injectors can fluctuate up to 6%, meaning a 42lb injector can be + or - 2.5 lb.
You can have a 44.5 lb injector in 1 cylinder, and a 39.5lb in the one next to it.
For nitrous applications like Black Sunshine(awesome song btw) was saying. We can make 6 flow matched perfectly, and 2 a hair bigger for the rear cylinders if you want. 6 flowmatched 42's and 2 43's or 44's if you like.
~Rich
You can have a 44.5 lb injector in 1 cylinder, and a 39.5lb in the one next to it.
For nitrous applications like Black Sunshine(awesome song btw) was saying. We can make 6 flow matched perfectly, and 2 a hair bigger for the rear cylinders if you want. 6 flowmatched 42's and 2 43's or 44's if you like.
~Rich
05-05-2009, 07:02 PM
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Ok ill get some flow matched ones, can you discuss the concept of having two a tad bit richer in the back? Should i really do this or not?
05-06-2009, 02:08 AM
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Nitrous can pool in the rear of the intake manifold making those cylinders get more than the others, can possibly causing a lean condition.
Its very rare tho, and only really a concern on a LARGE shot of nitrous.
Its very rare tho, and only really a concern on a LARGE shot of nitrous.
05-07-2009, 09:14 AM
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I think that it's more of an issue of the other cylnders getting all the air, and not as much by the time it gets back to 5-7 & 8.
Either way, getting extra fuel to at least 7 & 8, by going to a slightly larger injector, is sure good insurance, no matter what size shot you are running.
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05-11-2009, 09:22 AM
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Like stated, I then installed the 2 richest ones in cyl #7 and cyl #8.
No boost here - all N/A...maybe more of piece of mind, who knows, but at least the concept is sound.
