Dallas Fort Worth 5.0 Mustang Club
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Dallas Fort Worth 5.0 Mustang Club (http://www.dfw50s.com/index.php)
-   Performance (http://www.dfw50s.com/forumdisplay.php?f=30)
-   -   Boss Heads Vs. GT Heads (http://www.dfw50s.com/showthread.php?t=3062)

re-rx7 11-08-2013 01:04 PM
Quote:
Originally Posted by wbt (Post 55830)
It's all relative to cylinder pressure.

Less boost, more compression.
Less compression, more boost.

These platforms are 11:1 and they seem to handle a decent amount of boost.

From a piston standpoint....I prefer to run a flat top or dished piston vs. a pop-up as I think you get a better flame pattern resulting in more efficient fuel burn however that is a sacrifice in compression. In the pushrod days you could overcome that by decking the block and milling the heads. Not going to happen with the OHC stuff.
And fuel type?

wbt 11-08-2013 01:20 PM
No need for this info.

Dominic Toretto 11-08-2013 05:37 PM
Quote:
Originally Posted by wbt (Post 55841)
My rule of thumb is run the least amount of octane without detonation as possible. What that means for each combo depends.

Some will get away with 93, others are stuck with MS109, e85, etc...
Could you elaborate more on this please? I don't have as much knowledge on this as I should so just asking one of the experts here :)

-Alex

re-rx7 11-08-2013 05:55 PM
Quote:
Originally Posted by Dominic Toretto (Post 55938)
Could you elaborate more on this please? I don't have as much knowledge on this as I should so just asking one of the experts here :)

-Alex
HE is looking for the most complete combustion cycle. By using the least octane needed for the burn he is insuring that there is a complete combustion for optimal efficiency.

wbt 11-09-2013 01:59 AM
No need for this info.


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