Nsx Fuel Rail Options

Joined
23 January 2011
Messages
139
Location
Washington D.C.
After doing some research on Fuel rails it seems we are limited in the options available.
Has anyone tried J series fuel rails? Found an aftermarket set for around $180. They look similar, still unsure if injector and mount hole locations are same. If these could me made to fit easily that's the way to go.
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Also knowing that the C30a engine is a close family member of the early legend series engines I wonder if these will work?
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This is the NSX rail
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Top of Legend Rail
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Bottom of Legend rail

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Modified OEM rail from Tech7042
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I've been down this path before, and my recommendation is also the most cost-effective: Modify the OEM setup like Ddozier and others have done (the diagram you have above). Every now and then someone will get a supercharger and sell their complete OEM intake manifold with rails for cheap.

You can also buy your own fuel rail stock from various street car performance vendors and cut/machine it for your injectors. Then come up with a mounting system.

I think dmscrx is or was making fuel rails. You may want to contact him.

Or, you can do like I did and ask Comptech if they'll sell you just their fuel rails separate from the supercharger. Or the SOS rails separate from their ITB kit. It obviously fits our bore spacing, is precision machined so you don't need to worry about your injector o-rings trying to seal, and it's also got a tough anodizing to it. Then you just need to make your own mounts to the OEM intake manifold.

Honestly, a complete fuel system is extremely expensive and may not even be worth it depending on your power goals. With pump, filter, rails, regulator, electronic pressure sender, fittings, and teflon hoses, you can easily spend $1300 just in parts. Then all the labor to get it working....

My $0.02.
 
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