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Jack plate adjustment
#11848061
09/25/16 04:56 PM
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Joined: Mar 2012
Posts: 192
Stick um all
OP
Outdoorsman
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OP
Outdoorsman
Joined: Mar 2012
Posts: 192 |
I have a tzx195 with a HPDI 175. My RPM's seem a little low at top end. Should I play with my jack plate adj. is there a rule of thumb to raise or lower?
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Re: Jack plate adjustment
[Re: Stick um all]
#11848264
09/25/16 07:05 PM
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Joined: May 2003
Posts: 11,586
gary purdy
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 11,586 |
Only rule is to raise it in small increments. Check everything else first like is throttle linkage getting to full throttle, is ignition timing correct and all fuel components in good shape. Any prop dings?
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
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Re: Jack plate adjustment
[Re: Stick um all]
#11848322
09/25/16 07:34 PM
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Joined: Mar 2012
Posts: 192
Stick um all
OP
Outdoorsman
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OP
Outdoorsman
Joined: Mar 2012
Posts: 192 |
No prop dings. It's a new boat. I bought it back in February. I've had it in the shop already for a miss and power loss. The power loss was the result of a throttle cable clip popping loose under the cal. I put a zip tie on it to keep it from dong it again. I've had some trouble with getting the tac set correctly. New it was red lining at top end. The mec. Says that it was set incorrectly. He reset it and it was reading nothing at all. I played with it on the lake and got it reading again. It shows what the mec. Lap top did low RPMS. He told me to play with the jack plate or change the prop pitch. I'm still not sure f the tac is reading correctly. Top end shows 5300 rpm. His lap top showed 5600. Everything I've read says that it should be turning 6000.
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Re: Jack plate adjustment
[Re: Stick um all]
#11849524
09/26/16 12:28 PM
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Joined: Aug 2006
Posts: 7,182
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,182 |
set the prop shaft height at 3.5" below pad. run the boat, and verify max rpms water pressure gps speed boat handling if all is good, go up in 1/4 to 1/2 inch increments until something falls off, then lower 1/4 until it all comes back. if your not sure how to measure. visit. www.stevescustomprops.comon the left side is a link that shows you "how to measure prop shaft height"
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Re: Jack plate adjustment
[Re: Stick um all]
#11849952
09/26/16 04:00 PM
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Joined: Jan 2005
Posts: 16,475
Pat Goff
TFF Guru
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TFF Guru
Joined: Jan 2005
Posts: 16,475 |
#1 Rule of setting up your boat correctly: Take it too far and bring it back. It takes time, and it's a pain, but it's the only way YOU will know exactly what's right for YOUR boat. No two props/hulls/motors/weight is identical, you have to find what right for your rig.
Raise 1/4" at a time until you lose: Lift, speed, or water pressure. Then back a click and you're dead on.
Pat Goff Seadrift TX
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Re: Jack plate adjustment
[Re: Stick um all]
#11850394
09/26/16 08:19 PM
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Joined: Mar 2012
Posts: 192
Stick um all
OP
Outdoorsman
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OP
Outdoorsman
Joined: Mar 2012
Posts: 192 |
Thanks. It seems I will soon be on the lake for test and tune.
Last edited by Stick um all; 09/27/16 06:48 AM. Reason: Spelling error
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Re: Jack plate adjustment
[Re: Stick um all]
#11855980
09/29/16 06:42 PM
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Joined: Mar 2012
Posts: 192
Stick um all
OP
Outdoorsman
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OP
Outdoorsman
Joined: Mar 2012
Posts: 192 |
Went up a full inch. 1/4 at a time. No change that I could tell, except the bow seems to ride a little higher. Try again another day soon.
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