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e-85 help with boost

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Old 03-04-2008, 07:50 PM
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Default e-85 help with boost

i was planing around all normal things i know. where on a boosted motor i needed like a 9:1 compression motor. well if i run e-85 which basicly is like 100 oct. then can i run like 9.5:1 or 9.8:1?

please help. thanks
Old 03-04-2008, 08:28 PM
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just run more boost
Old 03-04-2008, 08:53 PM
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Originally Posted by Big Bird WS6
i was planing around all normal things i know. where on a boosted motor i needed like a 9:1 compression motor. well if i run e-85 which basicly is like 100 oct. then can i run like 9.5:1 or 9.8:1?

please help. thanks

You'd be better of keeping the compression at 9:1 and running more boost with the e85. It will be less stressful on the engine, and probably make more power than running higher compression with less boost.
Old 03-04-2008, 09:04 PM
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i wish they had E-85 in phoenix, arizona

Last edited by Cchris1109; 03-04-2008 at 09:11 PM.
Old 03-04-2008, 09:21 PM
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Originally Posted by Cchris1109
i wish they had E-85 in phoenix, arizona
You and me both

They do, but you would have to go down town and steal it!!
Old 03-04-2008, 09:25 PM
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i know on 15th ave and madison they have it, or is that for private people only


stealing is ok :-D
Old 03-04-2008, 09:30 PM
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We just got E85 in Albany NY... cant wait to take advantage of it.
On topic, You can change your boost but you cant change your static compression with a ****. Just something to keep in mind.
Old 03-04-2008, 09:39 PM
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We have a lot of E85 around me (Chicago/IL), but I'm doing a little research and if I wanted to convert I might have to change my gas tank. I'll ask this guy I know to go over my combo and see what issues he sees. He's an E85 specialist.
Old 03-04-2008, 09:42 PM
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my turbos max out at 18psi. which if i was running 91 oct i would still run 18psi. so will e-85 can't run anymore boost. so raising compression. will add power, right?

and john if you have a stock tank you are fine. e-85 aint as cerosive as people think.
Old 03-04-2008, 09:49 PM
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Originally Posted by Big Bird WS6
my turbos max out at 18psi. which if i was running 91 oct i would still run 18psi. so will e-85 can't run anymore boost. so raising compression. will add power, right?

and john if you have a stock tank you are fine. e-85 aint as cerosive as people think.
His is a 98 (steel)
Old 03-04-2008, 10:03 PM
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All gas around here is 10% ethanol anyway. Ethanol is nowhere near as bad as methanol which people commonly get confused about.
Old 03-04-2008, 10:23 PM
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Originally Posted by Cchris1109
i know on 15th ave and madison they have it, or is that for private people only


stealing is ok :-D
That's the Arizona Dept of Administration and I'm pretty sure it's private people (or Gov use) only

Edit: WAIT... there is a public one, first in Phoenix, but it a ways from my house in North Phoenix
Western States Petroleum
450 South 15th Avenue
Phoenix, AZ 85007
602-252-4011
View Map
Downtown Phoenix, between Jefferson and Grant on South 15th Avenue. First public station in Phoenix!

Last edited by kbracing96; 03-04-2008 at 10:31 PM.
Old 03-04-2008, 10:49 PM
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Actually I have a custom sheet metal gas tank.
Old 03-04-2008, 11:42 PM
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Originally Posted by kbracing96
That's the Arizona Dept of Administration and I'm pretty sure it's private people (or Gov use) only

Edit: WAIT... there is a public one, first in Phoenix, but it a ways from my house in North Phoenix
Western States Petroleum
450 South 15th Avenue
Phoenix, AZ 85007
602-252-4011
View Map
Downtown Phoenix, between Jefferson and Grant on South 15th Avenue. First public station in Phoenix!
Hmmmmm I may convert I will just buy drums on drums, well worth it IMO
Old 03-05-2008, 12:33 AM
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i was reading over on turbo forums a couple people put a bunch of parts in e85. One guys test lasted over a year. He said the bare aluminum was fine and all the rubber parts and hoses did the same stuff the gas would do to them. I am still not sure about running an aluminum cell but i think it is my only option.
Old 03-05-2008, 05:18 AM
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well 91/93 oct around here is like 3.30 a gallon and e-85 is like 2.40 a gallon. so if i lose 20% gas milage i still come out on top
Old 03-05-2008, 06:20 AM
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over here E85 is 2.60 and 93 is 3.50+ so its about the same if not cheaper on E85
Old 03-05-2008, 07:06 AM
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I don't see why you can not run E85 on 10:1 just a choice. Alot of people do not like to step over the unknow line. I have a friend running 10.5:1 with twin 76's but he is alky
Old 03-05-2008, 08:13 AM
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Originally Posted by Big Bird WS6
i was planing around all normal things i know. where on a boosted motor i needed like a 9:1 compression motor. well if i run e-85 which basicly is like 100 oct. then can i run like 9.5:1 or 9.8:1?

please help. thanks
yes you can run it at 9.5:1 or 9.8:1, my personal choice would be 9.5:1 and try to squeak out more boost, but you probably still could run allot on 9.8:1
Old 03-05-2008, 09:13 AM
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I read that E85 is like 105 octane.


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