Better to gain compression from heads of pistons
#1
TECH Fanatic
Thread Starter
Join Date: Mar 2002
Location: Chicago Land
Posts: 1,390
Likes: 0
Received 0 Likes
on
0 Posts
Better to gain compression from heads of pistons
I was wondering if its better to mill the heads or use domed pistons. Or are they the same. I am gonna be using 5.3 liter heads so i only need to gain about .3 compression.
#3
6600 rpm clutch dump of death Administrator
Re: Better to gain compression from heads of pistons
Better to use a flat or slightly dished piston, and a small combustion chamber rather than a big combustion chamber and a big dome. A big piston dome only slows down the flame front and interferes with the combustion process.
#4
Dumb Ass Vette Moderator
iTrader: (20)
Re: Better to gain compression from heads of pistons
If you only want .3 level of compression higher, you can go these options:
1) mill the heads 0.020"
2) +2cc done piston
A +2cc done piston will not slow down the flame travel. Flame travel comes into effect when the dome is fairly large, +10cc or more.
The other thing to keep in mind is price. A set of custom +2cc pistons will cost you $630 and milling the heads will cost about $75. You do the math <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
1) mill the heads 0.020"
2) +2cc done piston
A +2cc done piston will not slow down the flame travel. Flame travel comes into effect when the dome is fairly large, +10cc or more.
The other thing to keep in mind is price. A set of custom +2cc pistons will cost you $630 and milling the heads will cost about $75. You do the math <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
#5
Launching!
Join Date: Sep 2002
Location: Clinton Twp. Mi
Posts: 297
Likes: 0
Received 0 Likes
on
0 Posts
Re: Better to gain compression from heads of pistons
If at all possible, you want to use a flat top piston over the dome. So milling your heads would be the best bet.
Thanks,
Chris Gelineau
Diamond Pistons
877-552-2112 toll free
Thanks,
Chris Gelineau
Diamond Pistons
877-552-2112 toll free