Hey there,
I'm trying to decide on a headgasket thickness for my LA360. It will be a daily driver in Canada, except winter. 91 octane is fine, but I don't want to go higher due to availability. And I'm concerned about detonation.
I can't figure out if quench should take priority over my compression ratios.
I know a head gasket is just for fine tuning an already well designed system, but I'm wondering if all other factors in the engine build were fixed...
Stock stroke LA360 w/ Aluminum heads, bored 4.03
63cc chamber
5cc dished pistons
.017in deck clearance
Cam IVC ABDC: 67deg
Option 1: .026in gasket would be ~10.7:1 static compression, DCR: ~8.37:1. Quench: .043in
Option 2: .039in gasket would be ~10.39:1 static compression, DCR: ~8.13:1. Quench: .056in
Option 3: .056in gasket would be ~9.99:1 static compression, DCR: ~7.83:1. Quench: .073in
I imagine increasing the chamber volume and keeping a .043in quench is ideal, but if I can't do that.. Which is the best way to go here?
I'm not really looking for max performance right now, just something reliable.
A pro engine builder told me that option 2 is the best way to go, and to go easy in timing. But I wonder if I should just go with option 3 because the internet tells me that above 10:1 static and 8:1 dynamic I'm running close to trouble.
What would you do?
Thank you for any help.
Ben
EDIT: Poll--
Option 1: 1 Vote
Option 2: 1 Vote
Option 3: 1 Vote
