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| Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars |
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06-20-2004, 09:08 PM
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#1 |
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Leaky Injector
 
Join Date: Oct 2003
Location: south louisiana
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injectors
i will soon upgrade my injectors on my sr and i was suprised at how much the side feed injectors are, but i was thinking about buying an aftermarket top feed fuel rail because the injectors are cheaper.
are there any advantages to having side feed rather than top? and what is a 550cc(side feed) equivilant to ??lbs/hr(top feed) thanks in advance!! |
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06-20-2004, 10:22 PM
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#2 | |
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Zilvia Member
Join Date: Feb 2004
Location: Las Vegas, NV / Albany, NY
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Quote:
There really is no benefit to side-feed injectors, and actually at a certain point (basically 800cc + sized injectors) you need to go to top feed. The way side feed works is that the injectors sit in the fuel rail, and all the fuel that's passing down the rail actually has to flow around the injector, so if you've got a large rail, the space the fuel is actually flowing through is much smaller, make sense? I'm going with top-feeds myself. It's cheaper for top-feeds, even after you add the cost of buying a new fuel rail and possibly the resistors for low-impedence injectors. ~matt
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06-20-2004, 10:34 PM
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#3 |
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Leaky Injector
Join Date: Oct 2003
Location: south louisiana
Age: 39
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well im just going to hold off on this and get my sr running perfectly, then possibly werk on my suspension. i was going to upgrade my turbo to the disco,but there is too much to worry about with the fuel and all and mainly the money and downtime so thats that...
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06-21-2004, 09:59 AM
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#4 |
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Zilvia FREAK!
 Join Date: Apr 2004
Location: California, Norcal biiaatch
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Dont forget you are still going to need an ecu upgrade to acccount for the larger injectors, resistors since the injectors are low impedance, a fuel rail, and a fuel pressure guage and adj FPR are recommended. The conversion for cc/min to lb per hour is: CC min + lbs/hour x 10.2
So 52lb/hr injectors are about 530cc, 72lb/hr= 734.4cc
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06-21-2004, 03:38 PM
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#5 |
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Post Whore!
 
Join Date: Sep 2002
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the price thing... after you pay for the new rail fittings clips etc etc the cost really does even out between the side feeds and the top feeds.
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Keeping it Godzira bishes. So I murdered another turbo |
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