another problem with johnson 28 hp

[Daviet]

Re: another problem with johnson 28 hp

Not much help, might have caused you more problems.

 

[f16dcc431]

Re: another problem with johnson 28 hp

are there any lower units that are interchangable with this moter that may be longer??????

 

[f16dcc431]

Re: another problem with johnson 28 hp

idk what years maybe interchangable

 

[BonairII]

Re: another problem with johnson 28 hp

If you get a long shaft motor(5 inches longer), you'll end up having a motor that might be too long and you'd have to jack it up.

I wouldn't imagine that cutting the transom down 1 1/2 inches would be that difficult. I wouldn't do it, though if you don't plan on keeping that motor for awhile.

Measure your transom...I'm curious to what it measures.

 

[f16dcc431]

Re: another problem with johnson 28 hp

ill go mesure it right now

 

[f16dcc431]

Re: another problem with johnson 28 hp

ok transom is 20 1/2 and i mesued wrong the plate is 2 1/2 inches higher than hull bottom

 

[kfa4303]

Re: another problem with johnson 28 hp

That's a bit high. You don't want the cavitation plate to be more than 1/2" or so above the keel. You'll need to lower the motor or get an long shaft extension kit, if one is available.

 

[BonairII]

Re: another problem with johnson 28 hp

Do you plan on keeping your motor for awhile? If so, then you're gonna have to cut down the transom a bit.

 

[f16dcc431]

Re: another problem with johnson 28 hp

no plan on keeping the ole 28 on there maybe one more season then going somewere else dont rally want to cut into the transom extesions..... i wonder what years the 62 is comptable with

 

[f16dcc431]

Re: another problem with johnson 28 hp

what about a longer lower end

 

[jasper60103]

Re: another problem with johnson 28 hp

what about a longer lower end

Just my 2 cents...You have 4 choices to remedy this.
1) Get a long shaft extension kit, or buy a dead motor with a ext leg. Notice the leg extension in pic below. You can try placing a free ad on the antique outboard forum. http://www.aomci.org/ . Also, try salvage yards, ebay, craigslist, etc.
2) Sell/trade your motor for a long shaft. I think I like this option best.
3) Cut down your boat transom.
4) Get a short shaft boat.

FYI. I have a service manual for this motor. If you want a copy, PM me with your email address. Good luck.

 

[cwlson]

Re: another problem with johnson 28 hp

We were looking at extentions is there an extention that will bolt right up to the motor/lower end?

 

[kfa4303]

Re: another problem with johnson 28 hp

yup. I've circled the extension piece. Check ebay, aomci, or the marine salvage sites in the. They should be pretty easy to find.

 

[milliesdad]

Re: another problem with johnson 28 hp

no plan on keeping the ole 28 on there maybe one more season then going somewere else dont rally want to cut into the transom extesions..... i wonder what years the 62 is comptable with

What do you mean bu transom extension? Is there a piece built up under the motor? Maybe someone added to the transom, and it would be a matter of restoring it to original?

 

[f16dcc431]

Re: another problem with johnson 28 hp

i did end up Knotching the transom 2 1/2 inchs now the cavitation plate will be even the transom mad went smooth and no problems thanks for the help guys

 

[Daviet]

Re: another problem with johnson 28 hp

Let us know how it runs on the water.

 

[f16dcc431]

Re: another problem with johnson 28 hp

it ran alot better just not enough power out of the 28 to get it on plane when we were riding the waves in it got on plane for a sec it ran well may invest in a wale fin any thought on that

 

[Daviet]

Re: another problem with johnson 28 hp

Some say they work, I have never used one.

 

[freddyray21]

Re: another problem with johnson 28 hp

whale tails usually just break cavitation plates. smart tabs are much better and sold right here on Iboats.

http://www.iboats.com/Nauticus-Trim-Tabs/dm/*******.958878963--**********.483073450--view_id.239769