ebtide dyna trak 162 ss evinrude 115

[rhudson1]

I have a 1983 dyna track with an evinrude 115 nearly perfect condition until i discovered a rotten transom... thank you Nida-bond if you have never used it try it out.. once the transom was finished i put a 6 inch hijacker on the transom. during the test run with the jack at it lowest setting it appears to be catching too much air (does that sound right?) well the engine rpm is too high and appear the engine needs to be lower in the water. when we bout the boat new it had the same problem and the delaer placed shim plates between the engine and transom and advised the engine needed to be under the boat more. does this sound right? the question I have is when can one tell when the motor needs to be lower or when a larger prop is needed?

 

[crb478]

Re: ebtide dyna trak 162 ss evinrude 115

If it is cavatating you need to go lower. Where is the anti ventilation plate at in relation to the bottom of the keel. You should be even with or just above it. When the boat is running the av plate should be riding right at the top of the water.

 

[rhudson1]

Re: ebtide dyna trak 162 ss evinrude 115

thanks for the reply...I will measure it today and post tonight... I was given the 6 inch hijacker and thought it may help but it is at the lowest setting. what is the purpose of a jack plate anyway? I heard it is to help with a long shaft engine to reduce drag. Is the 1983 evinrude 115 considered long shaft?

 

[countvlad]

Re: ebtide dyna trak 162 ss evinrude 115

thanks for the reply...I will measure it today and post tonight... I was given the 6 inch hijacker and thought it may help but it is at the lowest setting. what is the purpose of a jack plate anyway? I heard it is to help with a long shaft engine to reduce drag. Is the 1983 evinrude 115 considered long shaft?

measure and take a picture, it would help... pic is worth 1000 words .... jack plate would bring the motor out of the water= less drag .... when i bought my motor i had to buy a 20" shaft because a 25"(long) would of been too long and it would stick way low in the water....

possible you might have a long shaft on a short transom... if the dealer mouted the jack plate is to bring the motor up... take a picture of the jack plate on the transom, cavitation plate in relation to the bottom of the hull....

 

[junior1113]

Re: ebtide dyna trak 162 ss evinrude 115

you'll know your to low if cavitation plate is spraying up water up water. one person drive and one person look.

size prop? some ss props like to be closer to surface and most allum. like to be further down

is motor mounted to jack at lowest mount holes on motor?

what is max rpm?

i have a high-jacker on this boat. they can be used for many things. i needed to be up higher. plus the 6" set back makes the boat ride like its bigger. they can also be used to make a 25" shaft work where there is a 20" transom. post pic.

 

[rhudson1]

Re: ebtide dyna trak 162 ss evinrude 115

here's the pix... 5 of 15

 

[rhudson1]

Re: ebtide dyna trak 162 ss evinrude 115

6-10

 

[rhudson1]

Re: ebtide dyna trak 162 ss evinrude 115

11-15....

 

[rhudson1]

Re: ebtide dyna trak 162 ss evinrude 115

please look at pics what do you think?

 

[junior1113]

Re: ebtide dyna trak 162 ss evinrude 115

nice boat reminds me of my old skeeter. ok you have a pad. so that straight edge is on the pad and not the bottom of the hull. iw ould say it looks pretty close from what i can see. if any thing it looks like it could go up a little. what is your max rpm and max speed with it where it is? i would set the motor all the way down on the jack plate. you have room i can see on motor bracket. and go up in 1/2" increments untill best performance is acheived

hydrafoils suck. they put uneeded forces on your transom.

 

[countvlad]

Re: ebtide dyna trak 162 ss evinrude 115

looking at pic 15 the cav plate is above the water....

what are you rpms at WOT?

 

[junior1113]

Re: ebtide dyna trak 162 ss evinrude 115

looking at pic 15 the cav plate is above the water....

what are you rpms at WOT?

water comes of of the back of the boat on an angle. have you ever been on a tube? with a pad on there the distance between the prop and the back of the hull is greater. rule of thumb is 1" up per 1' of distance. so even with no pad there is at least 1' between prop and back of hull. so 1' up is mandatory.

 

[rhudson1]

Re: ebtide dyna trak 162 ss evinrude 115

Thanks for the quick responses...I appreciate the comment on the old boat it is amazing how long one will last if you take care of it. we bought it new in 83......ok so I want to be sure I am correct on my boat terms before I follow directions. in my pictures i am considering the keel the very lowest point on the bottom and the pad to be the small area between the keel and at the bottom of the transom.. is this correct??
wot with trim up max rpm should be 5500
top speed was 47----now 45
prop size 13x19 stainless we have alum also 13x19

would the transducer be causing an air pocket in the prop area causing it to suck air(see last pic)?
out of the hole it is great probably better now with the jack plate but it just sounds like the engine needs to go lower and it reaches max rpm quickly and when turned it over revs.....so after yall correct me on my terms give me direction...thanks again.. this web is alot better than dealing with the marina.....

 

[junior1113]

Re: ebtide dyna trak 162 ss evinrude 115

what is your wot rpms? are you getting 5500? what i'm saying about the pad is where you had straight edge is not the lowest part of hull you have a stepped transom so where looking for cavitation plate in relation to the very bottom of hull. put the motor down on the jack plate all the way. then go up with jack untill best performance is achieved.

 

[rhudson1]

Re: ebtide dyna trak 162 ss evinrude 115

thanks for the term correction ..yes when i had the straight edge i had it on the keel in one pix and then the step down on the other which i named the pad....i am confirming the cavitation plate where the hydrofoil is mounted should be even with the keel not the step down .. i am getting 5500rpm plus the plus is what worries me. I will have to test the boat to see if the boat is spraying water and assure it is running on the cavitation plate.......i am going to lower the engine one hole on the jack plate which is the lowest i can go . the last hole can not be obtained because it bottoms out on the steering gear assy up top of the jack plate. also I think we added the hydro foil fins to prevent it from kicking out before the jack plate was added and to try and get it to stay in the water on sharp turns...is everyone in agreement that the fins should come off?...

 

[junior1113]

Re: ebtide dyna trak 162 ss evinrude 115

i would run that thing at 5600-5800 with todays ethanol gas. i would say off with the foil and on with a 4 blade. you had any expierience with 4 blade props there awsome. your numbers really are'nt that bad. i would be happy. i had a 79' 16' 2" skeeter with a 88 spl. and 4 blade was like night and day.

 

[rhudson1]

Re: ebtide dyna trak 162 ss evinrude 115

thanks for the reply i posted pix..got some good info