Forums
New posts
Search forums
Members
Current visitors
New profile posts
Search profile posts
What's new
New posts
New profile posts
Latest activity
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Everything Dirt Bike
General Dirt Bike
High Compression Pistons
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="SRAD97750" data-source="post: 117907" data-attributes="member: 425"><p>The term "Pump Gas" is misleading, as my premium is 91 octane here in CA where in other states I've seen 94 octane as premium.</p><p> </p><p>As a rule of thumb I say 12:1 and up requires 91 octane as a safe fuel. It's a high enough ratio that a higher octane fuel won't rob you of power, and when your engine gets really hot and hot spots appear on the head/piston, you won't ping/detonate.</p><p> </p><p>Running a high octane fuel in a lower compression engine will rob you of power because the fuel is more resistant to ignition.</p></blockquote><p></p>
[QUOTE="SRAD97750, post: 117907, member: 425"] The term "Pump Gas" is misleading, as my premium is 91 octane here in CA where in other states I've seen 94 octane as premium. As a rule of thumb I say 12:1 and up requires 91 octane as a safe fuel. It's a high enough ratio that a higher octane fuel won't rob you of power, and when your engine gets really hot and hot spots appear on the head/piston, you won't ping/detonate. Running a high octane fuel in a lower compression engine will rob you of power because the fuel is more resistant to ignition. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Everything Dirt Bike
General Dirt Bike
High Compression Pistons
Top