E85 questions, comp ratio and fuel system

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Mar 22, 2008 | 03:47 AM

Ghost 5.9

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E85 questions, comp ratio and fuel system

i currently have a stock fuel system other than a 255 walbro in tank pump. i am looking to make hp in the high 200's w/ my n/a setup. i would like to know what is required to switch to E85 and how much compression i would be able to run? i am getting ready to order a set of rc injectors (saturated) but am unsure what size to get, any help would be appreciated. also will the stock fuel filter's be alright w/ E85? thanks

Mar 22, 2008 | 05:03 AM

jasonp

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From: houston, tx, usa

the rule of thumb 25 to 30% more fuel for E85

Mar 22, 2008 | 06:55 AM

2fastGSR

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From: Jersey, USA

Re: (jasonp)

Randy im not too sure about e85 but there is a pretty informative thread in the All motor forum that has some good info in it . . .

https://honda-tech.com/zerothread/2144388

Modified by 2fastGSR at 4:33 PM 3/22/2008

Mar 22, 2008 | 11:56 AM

Ghost 5.9

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Re: (2fastGSR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2fastGSR »</TD></TR><TR><TD CLASS="quote">Randy im not too sure about e85 but there is a pretty informative thread in the All motor forum that has some good info in it . . .

https://honda-tech.com/zerothread/2144388

Modified by 2fastGSR at 4:33 PM 3/22/2008</TD></TR></TABLE>

thanks, it had some good reading.

looks like you could get away w/ fairly high comp ratios on this stuff. also looks like the stock fuel system will be fine.

not sure im completely comfortable w/ the fact that there are two different blends (winter/summer). diesel fuel has a winter/summer blend and the gas station wont say when exactly they switch over. i always know im on the winter blend when my mpg's drop by 3 or 4 lol.

Mar 22, 2008 | 07:21 PM

RacerStev

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From: Elkinspark, pa, usa

Re: (Ghost 5.9)

It's pretty easy to check.

Get 100cc of E85, add 30cc of water. The gas will seperate right out of the
mix. If you have 15cc of gas you have E85 or summer blend. If you have 30cc
of fuel you have winter mix..

Steve

Mar 23, 2008 | 09:26 AM

base-op.1320

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From: Moline, IL, US

Re: (RacerStev)

I ran e85 in a b20vtec with 13.5:1 wisecos and 450cc dsm injectors - ran great

Mar 23, 2008 | 01:15 PM

Ghost 5.9

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Re: (RacerStev)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RacerStev »</TD></TR><TR><TD CLASS="quote">It's pretty easy to check.

Get 100cc of E85, add 30cc of water. The gas will seperate right out of the
mix. If you have 15cc of gas you have E85 or summer blend. If you have 30cc
of fuel you have winter mix..

Steve </TD></TR></TABLE>

thats simple enough

so what size injectors could i get by with? i dont want to go too big because i will be running these injectors on my stock motor w/ pump gas for part of this season (mostly stock h series/low 200 whp). it will be tunned on s300, but i dont want the duty cycle too low......

i was thinking about RC 550's