Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Cobra Forums
SVT Shelby GT500
Educate me on HP levels and pump gas
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="StrayBullitt" data-source="post: 15824065" data-attributes="member: 181759"><p>I have always been taught that Octane is a quality of or say a measurement of resistance to detonation. Detonation (knock, pre-ignition, whatever you want to call it) especially at our power levels is not safe, this is when hard parts/internals can be damaged and you cannot safely and reliably run the Engine under all conditions.</p><p></p><p>So with that said I don't know if I would try and wrap my head around a certain horsepower level as the limitation for a given octane, but rather at what point on a specific Engine is the combustion event no longer stable with said octane and at what point is the threshold for resistance to detonation with said octane in that Engine being reached. There will be a ton of mitigating factors that go into that equation, your hard parts and supporting mods will be a factor in that, even ambient conditions.</p><p></p><p>X boost and Y timing will create a given environment for which the fuel is introduced and in that environment can the fuel sustain a controlled burn, not pre-ignite, not vaporize, I guess generally be able to maintain it's properties. You can play with one or the other (boost/timing) increase/decrease one or the other, however ultimately you will reach a point of diminishing returns, you can only increase boost so much before you start pushing limits of efficiency with your power adder and pushing hot air that is losing density. You can only back off timing so much because the Engine has a range of timing at which it performs best at and you need to start the combustion event for a proper burn throughout all of the RPM range. </p><p></p><p>So I will say that once you have reached this point of diminishing returns trying to combat or control detonation, then that is your Max Horsepower.( On your specific Engine with your specific fuel <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" />).</p></blockquote><p></p>
[QUOTE="StrayBullitt, post: 15824065, member: 181759"] I have always been taught that Octane is a quality of or say a measurement of resistance to detonation. Detonation (knock, pre-ignition, whatever you want to call it) especially at our power levels is not safe, this is when hard parts/internals can be damaged and you cannot safely and reliably run the Engine under all conditions. So with that said I don't know if I would try and wrap my head around a certain horsepower level as the limitation for a given octane, but rather at what point on a specific Engine is the combustion event no longer stable with said octane and at what point is the threshold for resistance to detonation with said octane in that Engine being reached. There will be a ton of mitigating factors that go into that equation, your hard parts and supporting mods will be a factor in that, even ambient conditions. X boost and Y timing will create a given environment for which the fuel is introduced and in that environment can the fuel sustain a controlled burn, not pre-ignite, not vaporize, I guess generally be able to maintain it's properties. You can play with one or the other (boost/timing) increase/decrease one or the other, however ultimately you will reach a point of diminishing returns, you can only increase boost so much before you start pushing limits of efficiency with your power adder and pushing hot air that is losing density. You can only back off timing so much because the Engine has a range of timing at which it performs best at and you need to start the combustion event for a proper burn throughout all of the RPM range. So I will say that once you have reached this point of diminishing returns trying to combat or control detonation, then that is your Max Horsepower.( On your specific Engine with your specific fuel ;)). [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cobra Forums
SVT Shelby GT500
Educate me on HP levels and pump gas
Top