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What should the engine height of an 06 Classic be? I know most go off the difference in the plates, but I want to know the inches “below the pad” reading. I think my motor may be in a different hole on the jackplate than others because with the plates even, I am at about 3.25″ below the pad. That seems to be a little too high. I thought I saw on here that it should be around 3.50″ – 3.75″ below the pad. Can someone confirm this? I am having porpoising problems and thought my engine was lower than it really is, so this may be the problem. Thanks for your help.Troy WestLast edited by bigt33 on January 3rd, 2012, 9:01 pm, edited 1 time in total.
A picture of your set up (plates) and info on the prop you are turning will be helpful.
I do not have a camera to take a picture of it right now. I am just looking for what height (below the pad) others with a Classic/PII are running right now to see if I am close or may have a problem elsewhere. Been fighting this problem since I bought this boat a year and half ago. Thanks.Troy West
At what speed are you experiencing porposing problems? All will do it at lower speeds and all can be different based on load in the boat and placement of the load. This goes for all makes and models. Different props can also play a part.
I have a Classic also and engine height was a lot different based on prop. Ran the Trophy Plus quite high but when switched to Fury (both 26P) I had to drop motor over 2″. Havent really run into the porpoising problem with either prop unless going very slow less then 25mph. Ive had my 07 for two seasons so roughly about the same as you. Im still learning also and changing props was almost like starting over. Especially when at 65 or faster. There was a good thread or two where a bunch of us with Classics with big block 200s discussed different things we ran into and tried. I think the small block 200 had a thread too. Only reason I suggested a picture is you mentioned you thought the motor was mounted lower on your jack plate then most. If you go into my images there is a good picture of the set up (when I had the Trophy Plus on (http://images.yuku.com/im…736f3be19e44.jpg). You can see where the motor is on the plates and how the plates are aligned which, if memory serves correctly, was 2 or 2 1/2 above even. Maybe you can compare to yours to get an idea if your motor is in the same or diffrent holes. As far as I know, this is how it came from the factory and is comparable to all/most of the other Classics/PIIs. With the Fury Im at 1/4″ below flush(thank you Mr. Bill G and Chris) which so far has been the best set up but Im still playing. I got the wrenches on board at all times….. Little tough for me because I just dont have have a straight stretch of water where I can play with trim and let the Merc wind out for more then a mile before got to make a turn. That and I really spend a lot more time fishing then running.Others will chime in and Chris has probably spent more time then all or most of us tweaking his set up on the PII. Chris is kind of a guru on setting up our hulls.Last edited by schodackbassman on January 4th, 2012, 1:07 am, edited 1 time in total.
Troys has a porpoise to it at wot
I have an 06 Classic with a 2.5 Merc 200 running a 25 Tempest + with all 3 vent holes plugged with the largest hole plugs available. From the bottom of the pad to the center of the lower unit is 3 3/8″ below the pad. 2 weeks ago with this cooler weather we are having I got 72 mph gps @ around 5900 rpm out of it. 23psi on the water pressure. The only issue I have is I have to trim down pretty good in a turn or my water pressure drops real bad. “as in alarm will go off” This boat like to run pretty flat and it dont take much trim. Could be the porpoise issue is trim relatedLast edited by txmrbass on January 6th, 2012, 5:40 pm, edited 1 time in total.
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