Octane??

[craigs06]

I have been running 93 in my 300 HPDI phase 3, but have been told 89 will do. With the ethanol gas, I was hoping the extra octane might compensate some for the lower quality. Anyone have any comments or thoughts?

[21XDC]

Rec heads 89+ oct... Race heads 93+

[craigs06]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 21XDC &raquo;</TD></TR><TR><TD CLASS="quote">Rec heads 89+ oct... Race heads 93+ </TD></TR></TABLE>

Yep, Got that. Wanting opinions on using 93 to compensate for the lower quality of ethanol.

[shortcast]

I have a phase II and I use 93oct just to be on the safe side.

[TomM]

The higher octane causes a slower burn in the cylinder to prevent predetonation with high compression heads. I don't think higher octane is going to do anything in regards to ethanol which is just replacing a certain amount of gasoline.

Tom

[esdbass]

I'd say run what Wayne tells you to run in your motor BUT ethanol gas has lower BTU rating than non ethanol gas regardless of it's Octane so I've been thinking that actually mixing some AV Gas or Racing Gas with it's higher BTU rating might be helpful in more ways than one?

[blair]

I've got a connection for some 55 gallon drums of racing gas Eli.............. .........let me know what you need..........

[esdbass]

Blair: I wonder what Wayne's take on this would be?

[blair]

Wayne has some interesting thoughts on this subject.............

[esdbass]

Care to share them

[blair]

Sent you an IM

[esdbass]

Never got it?

[blair]

Sent again Eli.

[1outlaw]

[bayoubullet]

makes 2 of us

[esdbass]

OK Wayne now would you come on and discuss it?

[craigs06]

I sent an IM to Wayne 3 or 4 days ago..........

[1outlaw]

LOL