Port n Polish
#21
Is there a company that has developed a CNC program for the heads? Port and polish can be disastrous if done incorrectly.
You could end up cutting into a water passage, making the port too big to be effective, create a flow pattern that does not work, create differences between the cylinders thus negating any gains, etc.
CNC'd heads are consistent between cylinders and usually, have a lot of engineering behind the program. Port shape, volume, and flow patterns are taken into account during the programming.
You could end up cutting into a water passage, making the port too big to be effective, create a flow pattern that does not work, create differences between the cylinders thus negating any gains, etc.
CNC'd heads are consistent between cylinders and usually, have a lot of engineering behind the program. Port shape, volume, and flow patterns are taken into account during the programming.
#22
#23
Is there a company that has developed a CNC program for the heads? Port and polish can be disastrous if done incorrectly.
You could end up cutting into a water passage, making the port too big to be effective, create a flow pattern that does not work, create differences between the cylinders thus negating any gains, etc.
CNC'd heads are consistent between cylinders and usually, have a lot of engineering behind the program. Port shape, volume, and flow patterns are taken into account during the programming.
You could end up cutting into a water passage, making the port too big to be effective, create a flow pattern that does not work, create differences between the cylinders thus negating any gains, etc.
CNC'd heads are consistent between cylinders and usually, have a lot of engineering behind the program. Port shape, volume, and flow patterns are taken into account during the programming.
-bix
#24
Yeah, as long as everything is done in moderation (sounds like a diet, eh?) I've seen many horrors done on heads in the past and would prefer a tried and true system.
If you're just polishing and not removing too much material, then a small increase in CAM specs might help. If you hog out the port, then you may need a bigger CAM to make it useful, but then again, you're going to have to spin some RPMs to make it work. It's a small pump anyway.
If you're just polishing and not removing too much material, then a small increase in CAM specs might help. If you hog out the port, then you may need a bigger CAM to make it useful, but then again, you're going to have to spin some RPMs to make it work. It's a small pump anyway.
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