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K plane trim tab pump
I have installed a set of K-planes on my boat and need trim tab pumps for them. Iam really looking for new pumps. Any idea where I can buy these?
Thanks Erik |
Keep an eye out in the swap shop or hit up Ebay. Usually you can find decent pumps on there fro $250 or so.
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Don't I need to look for pump designed for trim tabs? I thought I have read that trim tab and outdrive trim pumps are diffrent due to pressure/volume diffrences. Am I correct?
Erik |
Some people say yes, some say no.
From what I've read, the biggest thing is to make sure the high pressure port is pushing the tab down. On the drive, the high pressure port is pushing the drive up. Other than that, most of what you'll read is hear-say on there being two different pumps. I've got three drive pump valve bodies and two k-plane pump valve bodies sitting on my bench, and so far I've yet to find any real visual difference. Maybe the the pressure's are adjusted different...only way to tell is to pressure test them. That being said, I'm using pumps that used to be used for drives, for my k-planes. |
Originally Posted by c_deezy
(Post 3215056)
Some people say yes, some say no.
From what I've read, the biggest thing is to make sure the high pressure port is pushing the tab down. On the drive, the high pressure port is pushing the drive up. Other than that, most of what you'll read is hear-say on there being two different pumps. I've got three drive pump valve bodies and two k-plane pump valve bodies sitting on my bench, and so far I've yet to find any real visual difference. Maybe the the pressure's are adjusted different...only way to tell is to pressure test them. That being said, I'm using pumps that used to be used for drives, for my k-planes. I already have a new trim pump for the outdrive I bought all ready, now iam wondering if I should order 2 more for the tabs?? Erik |
post delete
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Look closer at them. The only difference is you probably have bulkhead/transom mounting plates on your k-plane pumps, you trim pump has a floor mount bracket. And the k-plane pumps have Keikaffer written on them, instead of the SAE J1171 (or whatever the heck the drive pump has on it).
You may also have the connector on the drive pump for easy hook up on the solenoids, as compared to running trigger wires to the solenoid, on the tab pumps. Other than that, the trim pumps and tab pumps are practically identical. I rewired my trim pump to match my k-plane pumps, only running the trigger wires from the helm back to all pumps, pulling the +12V from a source at the helm. Other possible difference is how your reservoirs are held on, single bolt under the reservoir or 4 screws on top. Like I said, if you really look close, they all break down to the same pump. Only possible difference may be in how the valve body pressures are set, other than that, they are pretty much identical. A quote I saw from mbam goes 'blue sky, green grass', when it comes to the drive pumps. So that means the blue wire is the high pressure side, green is low. |
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Originally Posted by c_deezy
(Post 3215083)
Look closer at them. The only difference is you probably have bulkhead/transom mounting plates on your k-plane pumps, you trim pump has a floor mount bracket. And the k-plane pumps have Keikaffer written on them, instead of the SAE J1171 (or whatever the heck the drive pump has on it).
You may also have the connector on the drive pump for easy hook up on the solenoids, as compared to running trigger wires to the solenoid, on the tab pumps. Other than that, the trim pumps and tab pumps are practically identical. I rewired my trim pump to match my k-plane pumps, only running the trigger wires from the helm back to all pumps, pulling the +12V from a source at the helm. Other possible difference is how your reservoirs are held on, single bolt under the reservoir or 4 screws on top. Like I said, if you really look close, they all break down to the same pump. Only possible difference may be in how the valve body pressures are set, other than that, they are pretty much identical. A quote I saw from mbam goes 'blue sky, green grass', when it comes to the drive pumps. So that means the blue wire is the high pressure side, green is low. Erik |
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