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E85 Injectors

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Old 11-03-2010, 07:32 PM
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Default E85 Injectors

What size injectors would I need should I decide to run E85?

408ci making about 520 rwhp on 93.
running 42 lb green tops (around 52 at 58 psi) getting to maybe 65-70% DC.
Walbro 255

Would these green tops suffice? What size would I need if not?

Also, I spray a 200 wet shot....
Old 11-03-2010, 07:33 PM
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nevermind, I guess I just multiply by 1.47....
Old 11-03-2010, 07:39 PM
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Originally Posted by Higgs Boson
What size injectors would I need should I decide to run E85?

408ci making about 520 rwhp on 93.
running 42 lb green tops (around 52 at 58 psi) getting to maybe 65-70% DC.
Walbro 255

Would these green tops suffice? What size would I need if not?

Also, I spray a 200 wet shot....
You will be on the very very top of those injectors. Go 60# to keep the DC 80-85%. I am running green tops (518rwhp) and the are maxed out. I will be going to 60's here pretty soon.
Old 11-03-2010, 07:41 PM
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Also, you may want to run a dual pump system. The 255 is maxed out with green tops are maxed out. May be a good idea to kick on the second pump the a TPS threshold is reached and add a timer to prevent short cycling the pump.
Old 11-04-2010, 05:41 AM
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Sounds like more trouble than it's worth at this point. The closest pump is 20 miles from me anyways.
Old 11-04-2010, 05:59 AM
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rule of thumb with e85 130% on everything lol most pumps are are rated on fuel and hp i found that cut that in half its what it supports e85 and the injectors do the math its 130%




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