88 15hp Evinrude motor mount problem

[Pappy]

Pay attention to what I told you about the water tube grommets. Do not do this job without replacing them.

 

[erictetterton]

Pappy » 5 minutes ago[/url]"]Pay attention to what I told you about the water tube grommets. Do not do this job without replacing them.

yes sir I am planning on it. There are two correct? One upper and 1 lower that goes into the water pump housing

 

[Charger25]

erictetterton » 20 Aug 2013, 20:30[/url]"]Beautiful job on the merc. I'm very anxious about getting started. I'm just gonna take a bunch of pictures and use a bolt bucket. I pray no bolts break off when disassembling

When disassembling any motor I highly recommend that you "bag and tag " all bolts and any pieces you remove. Zip loc bags are great for this,esp. the freezer bags with the white spot where ya can write on it. It will help when putting it all back together. Trust me on this, and by all means take tons of pics Good luck !

 

[Johny25]

^^^^^what charger said times 2, ziplock bags work way better than a bolt bucket unless you have done this before or know your way around your outboard very well. Bag and tag....can't go wrong

 

[Johny25]

erictetterton » Today, 17:09[/url]"]

Pappy » 5 minutes ago[/url]"]Pay attention to what I told you about the water tube grommets. Do not do this job without replacing them.

yes sir I am planning on it. There are two correct? One upper and 1 lower that goes into the water pump housing

Yes

 

[erictetterton]

Well after class today I connected the shift linkage back and diceded to fire it up and see how it performs with the broken motor mount. There was still about 1/2"+ forward to back play, but the motor ran and shifted flawlessly. I think I'm going to save the $160 to fix the upper mounts until it gives me trouble. Will it harm the motor if I continue to run it with broken mounts?

 

[Charger25]

Running an engine with broken or questionable motor mounts? [-X Well, I'd hate to see this happen to you

https://www.bing.com/videos/search?q=bill+dance+trolling+motor+blooper&view=detail&mid=3FFFE028D7B6E97B789A3FFFE028D7B6E97B789A&first=0&FORM=NVPFVR

 

[jethro]

Charger25 » 26 Aug 2013, 07:47[/url]"]Running an engine with broken or questionable motor mounts? [-X Well, I'd hate to see this happen to you

https://www.bing.com/videos/search?q=bill+dance+trolling+motor+blooper&view=detail&mid=3FFFE028D7B6E97B789A3FFFE028D7B6E97B789A&first=0&FORM=NVPFVR

LOL! Thank you for that link! Funny stuff to watch, but yes, not funny to have happen to you!

I have the same engine, different year on my jon boat and taken care of correctly it will last you quite literally forever. Do the work now, it will be worth it.

 

[SumDumGuy]

I just pulled the power head off a '55 Johnson RDE-17. What I found to be invaluable was a manual impact driver. I tried all sorts of things to get the mounting bolts to move (pb blaster, heat, etc), but it wasn't until I used the impact that I got the bolts out.

I picked up this one.... https://www.harborfreight.com/impact-screwdriver-set-with-case-37530.html

 

[erictetterton]

well i pulled the powerhead last night and it wasnt that hard of a job at all. I did extensive research on how to do it beforehand and to be quite honest, it was a simple job. all these people on the internet that say its such a hard job are just scaring people from tackling the job on their own. It took me maybe an hour to pull the powerhead off and expose the motor mounts. The mounts were definitely worn, but they were nowhere near failing. Boats.net wanted $68 a piece for the upper motor mounts and theres two of them, so i decided to be creative and make my own. I went to advance auto and got some shock absorber bushings made of hard rubber and trimmed them to fit inside the existing mounts. I tightened everything up and its solid as a rock. Theres no play whatsoever now in the mounts and it should last another 25 years. I am waiting for my new gasket seal and water tube grommets to come in and i'll have everything back together by next weekend. Thanks for all the help

 

[erictetterton]

oh and the project cost me a grand total of $40. It was quite fun working on the evinrude. they are very simple motors

 

[Johny25]

Make sure you re-seal the lower crankcase head also with some silicone rubber when you put it back together

 

[erictetterton]

so after i put the exhaust housing gasket on, put silicone rubber on it also?

 

[Johny25]

No not on the gasket.....or either surface the gasket will touch. I am talking about part #11 in this diagram https://www.boats.net/parts/search/BRP/JOHNSON/1988/J15RLCCS/CRANKSHAFT%20%26%20PISTON/parts.html
You apply the silicone rubber at the taper (bottom of pic) where the shaft narrows. The step down in the shaft may be a better way to describe it

 

[erictetterton]

okay i understand now, thanks for the parts reference