MS3, 12.5 CR, and pump gas?
03-19-2006, 01:22 AM
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Originally Posted by orangeapeel
You might be able to with the correct pistons and heads...That will be a pretty stout motor.I think that 93 might be as looooow as you would want to run really with that type of CR.
03-19-2006, 01:32 AM
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Originally Posted by orangeapeel
What was the CR for those pistons? I am guessing if you have stock heads then it must be 12.5:1 . 
you got itr
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03-19-2006, 12:08 PM
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the reason being for the domed piston is that I found a killer deal on a forged short block, the only bad thing about, is its stout *** CR. Is there away to lower the CR just enough to use the stock heads? like using a thicker head gasket?
03-19-2006, 12:55 PM
#10
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Man,
Domed pistons have specific applications, daily driving is not one of them.
You'll have issues with those.
Killer deal now = more $$$ and huge headache and butt kicking later.
If it is such a killer deal, then buy it, swap pistons for some other ones (flat tops or valve relieved) sell those and recover some money.
If you understood the function of a domed piston, you wouldn't even consider this option.
Domed pistons have specific applications, daily driving is not one of them.
You'll have issues with those.
Killer deal now = more $$$ and huge headache and butt kicking later.
If it is such a killer deal, then buy it, swap pistons for some other ones (flat tops or valve relieved) sell those and recover some money.
If you understood the function of a domed piston, you wouldn't even consider this option.
03-19-2006, 01:05 PM
#11
Originally Posted by PREDATOR-Z
Man,
Domed pistons have specific applications, daily driving is not one of them.
You'll have issues with those.
Killer deal now = more $$$ and huge headache and butt kicking later.
If it is such a killer deal, then buy it, swap pistons for some other ones (flat tops or valve relieved) sell those and recover some money.
If you understood the function of a domed piston, you wouldn't even consider this option.
Domed pistons have specific applications, daily driving is not one of them.
You'll have issues with those.
Killer deal now = more $$$ and huge headache and butt kicking later.
If it is such a killer deal, then buy it, swap pistons for some other ones (flat tops or valve relieved) sell those and recover some money.
If you understood the function of a domed piston, you wouldn't even consider this option.
03-19-2006, 05:26 PM
#13
I would not run a thicker head gasket under any circumstances. A loose quench will give you detonation problems at that compression. I believe Lunati rates the 12.5:1 with .053" gaskets anyway, so you can't get much thicker, nor would you want to.
Domes screw with the flame travel and are better suited to quick burning race fuel.
Domes screw with the flame travel and are better suited to quick burning race fuel.
