Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > 911 / 930 Turbo & Super Charging Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
mark houghton's Avatar
 
Join Date: Jul 2008
Location: Central Washington State
Posts: 3,775
100% gas...new concept

Today I filled her to the brim with Exon premium 92 which claimed no ethanol added. Nothing but the straight stuff. Also added an alloquat of Stabil 'cause my intentions are to put her in storage here shortly. I chose the straight stuff because of ethanol's affinity to attract moisture....not a good thing in storage conditions.

But, not after at least one (or two) more good rides. What I noticed is that my AFR's at cruise seemed about 0.2-0.4 lower than what I normally experience with 10%ETOH blends. Could be the Stabil, could be the "real" gas. Comments? Car ran like a raped ape regardless, especially with the cool mornings.
__________________
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 10-12-2011, 05:39 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Jun 2008
Location: Yamhill OR.
Posts: 409
My turbo with ego in open loop with aviation gas is about a half point richer than
E-10
Old 10-12-2011, 06:19 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
Join Date: Jul 2006
Location: S. Florida
Posts: 7,267
Quote:
Originally Posted by mark houghton View Post
Today I filled her to the brim with Exon premium 92 which claimed no ethanol added. Nothing but the straight stuff. Also added an alloquat of Stabil 'cause my intentions are to put her in storage here shortly. I chose the straight stuff because of ethanol's affinity to attract moisture....not a good thing in storage conditions.

But, not after at least one (or two) more good rides. What I noticed is that my AFR's at cruise seemed about 0.2-0.4 lower than what I normally experience with 10%ETOH blends. Could be the Stabil, could be the "real" gas. Comments? Car ran like a raped ape regardless, especially with the cool mornings.
The ethanol molecule in E10 gas has oxygen in it. Mixing alcohol with gas will always lean out the mixture compared to real gas because the alcohol is carrying in some oxygen with it.
As an example fill up with E85 gas and you'll be way lean.
The reason our cars idle smoother and better around 13.5:1 instead of 14.7:1 is partly because most pump gas is E10 and the stoich mixture is lower than 14.7 nowadays.
Old 10-12-2011, 06:22 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
mark houghton's Avatar
 
Join Date: Jul 2008
Location: Central Washington State
Posts: 3,775
Thanks guys, that's what I thought...just needed some confirmation and thought I would share some real-world experiences.
__________________
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 10-13-2011, 04:42 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 10:28 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.