Flycutting Q's???
06-04-2012, 08:30 AM
#1
Flycutting Q's??? I'm looking at a set of TFS 215 heads that are milled to 59cc chambers and will need to be cut a little more to true up the surface. I realize I will need to flycut and would actually like to so I can lower compression a little.
How many cc's would flycutting add roughly?
How do I flycut the pistons? I searched and found tons of threads but can't really find a 'how to' thread. I would have to use the TFS heads, would running the tool through them hurt them at all?
How many cc's would flycutting add roughly?
How do I flycut the pistons? I searched and found tons of threads but can't really find a 'how to' thread. I would have to use the TFS heads, would running the tool through them hurt them at all?
06-04-2012, 10:00 AM
#2
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There are several tools out there. The cheapest and easiest I've seen is to take an old valve, put some sticky backed sandpaper on the end of it, and on the other end use a drill to spin it. It will cut out the piston shape without trouble. But you can get the tool too for some $$.
06-12-2012, 04:05 PM
#6
I flycut the pistons in my C5. First tried the sandpaper method as mentioned above, then used the flycutting tool from Isky Racing. Using the Isky tool was much easier and well worth using over the sandpaper method. You're not going to lower compression much at all as there is so little material removed from the piston, but I guess even a little helps.
Here's a "how-to" link I found:
http://forums.corvetteforum.com/c6-t...mpression.html
Here's a "how-to" link I found:
http://forums.corvetteforum.com/c6-t...mpression.html
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06-13-2012, 02:19 AM
#9
Depending on how deep your cuts are, you can easily add 2 cc's to your total volume. That's the same as adding .013 to your gasket thickness, or switching from a .040 gasket to a stock gasket.
Although, in reality, your only going to drop about 1 pt in compression which amounts to a whole lot of nothing.
Although, in reality, your only going to drop about 1 pt in compression which amounts to a whole lot of nothing.
