Slant Six Forum
https://www.slantsix.org/forum/

Head milling- how much cut per CC?
https://www.slantsix.org/forum/viewtopic.php?t=44287		 Page 1 of 1
Author:  drgonzo [ Thu Mar 31, 2011 6:10 am ]
Post subject:  Head milling- how much cut per CC?
I am sure the formula is here somewhere but I can't find it even if its obvious to every one else....I missed it.

So, when milling /6 heads how much does what? How much cut delivers what reduction in chamber size?
Author:  Joshie225 [ Thu Mar 31, 2011 11:53 am ]
Post subject: 
.0066"=1cc
Author:  drgonzo [ Thu Mar 31, 2011 12:06 pm ]
Post subject: 
You da man!
Author:  wjajr [ Thu Mar 31, 2011 1:35 pm ]
Post subject: 
So now you know how many cc are removed per given depth of cut. This by it's self is useless information.

Now you need to measure how far down the hole a piston is at TDC, length of stroke, diameter of piston, thickness of head gasket when compressed, starting cc’s of combustion chamber, and enter all this info into a compression calculator. Than calculate depth of cut to arrive at a pre determined compression ratio suitable for your camshaft and build. Skipping these steps will just waste time and money, yielding poor performance.

You have to know your starting point, and calculate to reach your goal.
Author:  Joshie225 [ Thu Mar 31, 2011 2:45 pm ]
Post subject: 
Actually, it's very good information to have. Say I have a 62cc head and to get my target compression ratio I need a 50cc head. How much do I mill from the head?
Author:  Fopar [ Thu Mar 31, 2011 3:04 pm ]
Post subject: 
I calculate it to be .079

Richard
Author:  drgonzo [ Thu Mar 31, 2011 5:23 pm ]
Post subject: 
Quote:
So now you know how many cc are removed per given depth of cut. This by it's self is useless information.

Now you need to measure how far down the hole a piston is at TDC, length of stroke, diameter of piston, thickness of head gasket when compressed, starting cc’s of combustion chamber, and enter all this info into a compression calculator. Than calculate depth of cut to arrive at a pre determined compression ratio suitable for your camshaft and build. Skipping these steps will just waste time and money, yielding poor performance.

You have to know your starting point, and calculate to reach your goal.

I already had all that. :)
Author:  wjajr [ Fri Apr 01, 2011 4:48 am ]
Post subject: 
Drgonzo:
Quote:
I already had all that.



Good Show old bean, some cut first, calculate later, and then scratch head.
Page 1 of 1 All times are UTC-08:00
Powered by phpBB® Forum Software © phpBB Limited
https://www.phpbb.com/