ATS_Aaron
X-
- Location
- Shady Shores, TX
I just read like three post in different threads about people complaining about the additional maintenance required on power valve motors. None of these posts came from actual owners of PV motors.
On a typical b-pipes motor it's a total of 7 bolts and two clamps. It takes about 15 minutes and you only need to do it like every TWO YEARS.
Step one: loosen hose clamp from b-pipe head pipe to chamber (you can loosen either one, depends on how you like to install them).
Step two: loosen/remove cooling hose on top of B-pipe head pipe
Step three: Remove three bolts that hold the head pipe to the manifold. Move the head pipe out of the way (there will still be one coolant line attached, when I built my motor I gave it enough slack that I could flop the head pipe out of the way with the line still attached).
Step 4: remove power valves. On my motor they are each held in with two allen screws. I think a 4 or 5mm tool fits best. A ball end on the tool is very helpful to clear the actuator part.
Step 5: slide the valves out. If they slide out easily you probably wasted your time and they were working just fine.
Step 6: clean the blades. There is some debate on what can be used to clean them. I think a little pre-mixed gasoline does a great job. Just remove and carbon deposits and then slide them back in. Make sure you install them straight and not twisted.
Advanced players can pull either the exhaust manifold (yunk) or the head (easy with DASA head) and check for smooth PV actuation after you reinstall your clean blades. If they don't feel smooth then you either installed them twisted or didn't clean them well enough.
I had nearly 100 hours on my Polaris 785 Pro (3 cylinder 150hp PV motor) and never had problems with my PV's.
Enjoy those PV motors!
Aaron
On a typical b-pipes motor it's a total of 7 bolts and two clamps. It takes about 15 minutes and you only need to do it like every TWO YEARS.
Step one: loosen hose clamp from b-pipe head pipe to chamber (you can loosen either one, depends on how you like to install them).
Step two: loosen/remove cooling hose on top of B-pipe head pipe
Step three: Remove three bolts that hold the head pipe to the manifold. Move the head pipe out of the way (there will still be one coolant line attached, when I built my motor I gave it enough slack that I could flop the head pipe out of the way with the line still attached).
Step 4: remove power valves. On my motor they are each held in with two allen screws. I think a 4 or 5mm tool fits best. A ball end on the tool is very helpful to clear the actuator part.
Step 5: slide the valves out. If they slide out easily you probably wasted your time and they were working just fine.
Step 6: clean the blades. There is some debate on what can be used to clean them. I think a little pre-mixed gasoline does a great job. Just remove and carbon deposits and then slide them back in. Make sure you install them straight and not twisted.
Advanced players can pull either the exhaust manifold (yunk) or the head (easy with DASA head) and check for smooth PV actuation after you reinstall your clean blades. If they don't feel smooth then you either installed them twisted or didn't clean them well enough.
I had nearly 100 hours on my Polaris 785 Pro (3 cylinder 150hp PV motor) and never had problems with my PV's.
Enjoy those PV motors!
Aaron