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Fuel and limits of stock system

Challenger 
4K views 7 replies 5 participants last post by  hotrod1 
#1 ·
Curious
Has anyone or does anyone know if the stock fuel system aka lines and return line ( I have aftermarket pump but not sure if e85 is ok ) would hold up to mixing e85 and say 91-93 octane fuel ?

I would like to mess with this but not sure if the lines and other bits will take it or not



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#2 ·
I’m running full content e85 with only Id1000’s , nothing else done for fuel...... yet...


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#4 ·
Mine is a 16’ , but I don’t think they’d change anything if wasn’t intended for flex. I wonder what was changed on my wife’s Durango. It’s a 15’ flex fuel v6.


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#6 ·
For flex fuel you need compatible lines but also the capability to flow more fuel due to the lower heat content per gallon for ethanol.
So larger injectors and larger pump. Possibly the same fuel pressure.
 
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