How much will Flat Valves (omni's) bump up compression.
04-12-2006, 07:27 PM
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Re: How much will Flat Valves (omni's) bump up compression. (Vintech)
I would like to know as well maybe someone like Tbone will chime in on this.
04-12-2006, 09:59 PM
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Re: How much will Flat Valves (Viorent Grip! EG)
I know the flat supertechs bump up the comp. ratio by .2, I have heard omni & skunk 2 flat valves are the same.
04-12-2006, 10:47 PM
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Re: How much will Flat Valves (broketuner-egb16a)
If its that small then whats the point. That's not enough for me pay that kind of loot to have. I think ill save that and get Aluminum rods or some.
Wait a minute .4 on a b20 now that's gangsta right there whats the cost on a set of those shipped to 92026
Modified by freakyty2 at 7:58 AM 4/13/2006
Wait a minute .4 on a b20 now that's gangsta right there whats the cost on a set of those shipped to 92026
Modified by freakyty2 at 7:58 AM 4/13/2006
04-13-2006, 04:16 AM
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Re: How much will Flat Valves (freakyty2)
The compression loss will vary depending on your total combustion chamber volume. Running High Compression piston, then flat bottoms will have more of an impact than on a OE CR piston.
If you want to actually CALCULATE your CR based on your valves, assume:
3cc VOLUME LOSS PER CYLINDER over OEM valves. This came straight from Steve at Omni.
Now you go here:
http://www.c-speedracing.com/h...c.php
Pick your head or if you had your head cc'ed with OEM valve then subtract 3cc from that and enter that value into the combustion chamber volume.
If you want to actually CALCULATE your CR based on your valves, assume:
3cc VOLUME LOSS PER CYLINDER over OEM valves. This came straight from Steve at Omni.
Now you go here:
http://www.c-speedracing.com/h...c.php
Pick your head or if you had your head cc'ed with OEM valve then subtract 3cc from that and enter that value into the combustion chamber volume.
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04-13-2006, 11:48 AM
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Re: How much will Flat Valves (BryanPendleton)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BryanPendleton »</TD></TR><TR><TD CLASS="quote">The compression loss will vary depending on your total combustion chamber volume. Running High Compression piston, then flat bottoms will have more of an impact than on a OE CR piston.
If you want to actually CALCULATE your CR based on your valves, assume:
3cc VOLUME LOSS PER CYLINDER over OEM valves. This came straight from Steve at Omni.
Now you go here:
http://www.c-speedracing.com/h...c.php
is there something he dosnt know????
Pick your head or if you had your head cc'ed with OEM valve then subtract 3cc from that and enter that value into the combustion chamber volume. </TD></TR></TABLE>
If you want to actually CALCULATE your CR based on your valves, assume:
3cc VOLUME LOSS PER CYLINDER over OEM valves. This came straight from Steve at Omni.
Now you go here:
http://www.c-speedracing.com/h...c.php
is there something he dosnt know????
Pick your head or if you had your head cc'ed with OEM valve then subtract 3cc from that and enter that value into the combustion chamber volume. </TD></TR></TABLE>
04-13-2006, 11:49 AM
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Re: How much will Flat Valves (existanzcivicb20)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BryanPendleton »</TD></TR><TR><TD CLASS="quote">The compression loss will vary depending on your total combustion chamber volume. Running High Compression piston, then flat bottoms will have more of an impact than on a OE CR piston.
If you want to actually CALCULATE your CR based on your valves, assume:
3cc VOLUME LOSS PER CYLINDER over OEM valves. This came straight from Steve at Omni.
Now you go here:
http://www.c-speedracing.com/h...c.php
Pick your head or if you had your head cc'ed with OEM valve then subtract 3cc from that and enter that value into the combustion chamber volume. </TD></TR></TABLE>
is there something he dosnt know
If you want to actually CALCULATE your CR based on your valves, assume:
3cc VOLUME LOSS PER CYLINDER over OEM valves. This came straight from Steve at Omni.
Now you go here:
http://www.c-speedracing.com/h...c.php
Pick your head or if you had your head cc'ed with OEM valve then subtract 3cc from that and enter that value into the combustion chamber volume. </TD></TR></TABLE>
is there something he dosnt know
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