Anyone mind calculating my CR?
Thread Starter
Joined: Nov 2001
Posts: 2,486
Likes: 4
From: Orlando, FL
Anyone mind calculating my CR? I have 6 litre heads with 73CC chambers, stock graphite gasket, and Diamond -8.6 cc dished pistons on a 3.9 bore...
8.something...
8.something...
TECH Apprentice
Joined: Apr 2003
Posts: 372
Likes: 0
From: Orlando, FL
8.82558993883869 : 1
assuming the block isn't decked, if it has been, probably more likely to be
8.9984011129872 : 1
only unkown is your piston to deck clearance. using the following for everything else
3.9" Bore
3.622" Stroke
73 CC Chamber
.051" Gasket Thickness
3.9" Gasket bore
8.6cc dish
assuming the block isn't decked, if it has been, probably more likely to be
8.9984011129872 : 1
only unkown is your piston to deck clearance. using the following for everything else
3.9" Bore
3.622" Stroke
73 CC Chamber
.051" Gasket Thickness
3.9" Gasket bore
8.6cc dish
Got one for ya also...
Lunati LS1 382 3.898" Bore, -8cc Reverse Dome Piston, 4.000" Stroke, 6.125" Rod Length, 63CC Chambers, heads decked about .015", Stock head gasket and stock deck.
Lunati LS1 382 3.898" Bore, -8cc Reverse Dome Piston, 4.000" Stroke, 6.125" Rod Length, 63CC Chambers, heads decked about .015", Stock head gasket and stock deck.
TECH Apprentice
Joined: Jan 2004
Posts: 337
Likes: 0
From: Frisco TX (Dallas Area)
Check this link out. You'll get all you need! CR is about halfway down. 
That shows Whistler's CR as 8.6:1.
http://www.ondoperformance.com/calculators.html
That shows Whistler's CR as 8.6:1.http://www.ondoperformance.com/calculators.html
