Sticky rings??

[Hotrods]

Re: Sticky rings??

One more thing, My motor head neighbor said it's bad but fixable, new piston ring and hone the cyl. Im wondering now if I can really do it...I do have the repair manual. they rebuild motors next door, he said he would help me with installation/honing. but can I take this motor apart and get it back together again? I have an evenrude guy who works on my motor.. 50$ an HR think its worth having him do it? and what is a Fair price for him to charge me?

 

[OBJ]

Re: Sticky rings??

A 93'? Yep. Punch out the bad hole and hone the rest if specs will allow. If the head ain't to bad beat up, can still be used. Gotta be careful of a head that's full of pits. Carbon can build in the pits and glow like a glow plug. Soon as the fuel hits it, it ignites. Pre-ignition or going off before it should.....is what it's called.<br /><br />Save some bucks and do it your self. Get a OEM manual and follow the procedures inside. Isn't really that hard.

 

[Hotrods]

Re: Sticky rings??

Thank You ALL Agian!! I dont know where id be without you guys..:,)...<br /><br />So I can get to it from removing the intake man. As posted above? My neighbor said yea we need to smooth out those pits in the head and it looks savable...please check back, i will get some good pics up for you.. guess i should rebuild the cards while I have them off to right. so my list of material would be<br /><br />Carb kit<br />intake man gasket<br />piston with rings<br />head gasket<br /><br />I have the selco repair manual it shows a rebuild but not from the intake side.. Im thinking I could do this...until other come in and say i should do them all, then i start looking into a new power head which then makes me look for just a new motor... then i find myself signing a 10k loan for a new motor......<br /><br />So i better get on it..<br /><br />For the record I found this boat. a 1975 CC 19' 7'6 beam, 30"gunwales new roller ball trailer at the children donation center...for 600$ I put some TLC into and this is where i stand.. Did own another boat with a new 80hp merc but sold it since the motor was too small for this boat. here is a pic of my 600$ boat..<br /><br />1. http://www.lethaloldfarts.net/images/picgallery/boat middone_657448.JPG

 

[alanR1]

Re: Sticky rings??

hotrod, i have the exact same problem as you!! Take off the manifold and you should be able to get to the connecting rod where it connects to the crankshaft. I would bet that the bearings in the crank are shot that is why there was too much play and caused the piston to hit the plug!! Change the bearing at the crankshaft and the wrist pin!! Hone the cylinder if it is possible and install new piston and rings. Defintely check your carb too. Also, take a dremel with appropriate bit to polish out your head from pitting, just be careful not to do it too much! Let me know how yors turns out if you don't mind @ scrilznoat@yahoo.com, I will be doing the exact same thing this weekend as you are going to do!! I will send you some pics of mine if you email me.. Good Luck!

 

[Hotrods]

Re: Sticky rings??

Yes it was a peace of ring.. what happen was the motor sat for 2 years, that piston was most likely froze. 2 weeks ago when i fired her up i never pumped oil in the cylinders. dang>> cuz im told the damage i did is very fresh. I did find the spot in the piston where the little piece of ring wedged thru the piston making the only grove. most are telling me I must redo the whole motor. yea if i had the $ i would. all of my friends and boat owner friends are saying the single piston fix is fine. Im sticking with that. I will go order all I need tomorrow, I spoke with the marina and they said I have to come in and order what i need. Im sure they are going to try and talk me out of it.. Oh well.<br /><br />Could anyone help in what i will need to order?<br /> I will start with full gasket kit<br />and I plan on redoing the carbs and checking the bearings.

 

[Hotrods]

Re: Sticky rings??

One more Question. the inside top of the head is pretty dinged up, I am told that i can smooth the holes out leaving no sharp edges, for build up. is that ok? for me to take it all the way down i would be remove about a 16th " should i fill it with permatex? then sand it down.<br /><br />Rod

 

[Hotrods]

Re: Sticky rings??

Well that didn't work, Maybe my bad but did i need to pull the whole power head ..becuase after 4 hours i got to the intake manifold. but there was one wedge pin under the bottom left side the you can not get to unless you remove the block. plus. the power head bolts that come down thru the cowling prevent the man from going forward, well i broke one motor mount off manifold, has far as im concern it can go to the curb.<br /><br />Very sad day.....

 

[jy118lfd]

Re: Sticky rings??

Hotrod where in NJ are you? maybe I can help? I am A mechanic with ten years on cars and a few on outboards

 

[Hotrods]

Re: Sticky rings??

Yardville, Near Trenton,, yu know The sad think is all this work and ..am I really doing it right? I keep saying to myslef....... 600$ boat 600$ boat 600$ boat.there is a pic above.. Not including all the work and odds and ends i put in. I torned my other boat over for 2000 and ,,,i got about 1000 left..<br /><br />This power head must come off to get the manifold off..that i know for sure now

 

[jy118lfd]

Re: Sticky rings??

I am on the oppisite side in Lakewood. Ya know where they are still searching for that girl that dissappeared. I think you should have it fixed cause the money you spend on a new motor is out of sight and to buy a used motor would be a gamble unless you cknew where it came from and how it was maintained. Or could check it out internally. Get it fixed by a competent shop if you dont feel confident to do it yourself. By the way I own a 19' aquasport with a 78 235 johnson (1,000.00) and let me tell you there is no substitute for the factory manual. I have a seloc a clymer and a johnson and the johnson is light years ahead of the others good luck and get it back in the water soon!!!

 

[Hotrods]

Re: Sticky rings??

I think Im going to take this approach<br /><br /> http://www.boatpartstore.com/powerhead.asp <br /><br />Other here have used it.. What would i send them, since i have just about all of the motor apart aready.. "power head" does that include the manafold and all, fly wheel etc.

 

[jy118lfd]

Re: Sticky rings??

The power head is the entire motor removed from the lower unit and exhaust housing. Send them the carbs too as they say they will rebuild them too. No electronics or accessories. Call them and explain the problem they seem like they are a goos shop Good Luck and let us know how it works out. The 3 to 4 day turnaround sounds great too!

 

[Hotrods]

Re: Sticky rings??

OK day 2. almost there.. Question..in the back of the motor underneath.. there are 2 large bolts that i took out.. now the entire motor moves away from the top of the ttrim section. did im need to take these out, is the lower unit gunna fall when i pull the head? Just to hot to finish tonight...

 

[Hotrods]

Re: Sticky rings??

Tomorrow i will be hooking her to a change hoist and pulling the PW off.<br /><br />I will be sending the block to the local machine shop for boring all 4, Then I will replace everything as needed with help from my neighbor "motor head" he has rebuilt many a Motor<br /><br />Final cost should be around 700. if the bearings are OK.<br /><br />Anything I should look out for when removing or installing the PW?

 

[OBJ]

Re: Sticky rings??

You should have the oversize pistons hotrod and what the bores are at standard size. If the machine shop is good, they will bore each cylinder for a particular piston. (mass produced pistons can vary a thousandths or two.) Make sure they break the edges around the exhaust and intake ports. And if it were me, I'd git a OEM manual for the engine. <br /><br />Sounds like ya' got a plan.....go with it and good luck!

 

[Hotrods]

Re: Sticky rings??

explain "break the edges"

 

[OBJ]

Re: Sticky rings??

During the boring or honing process, the edges around the intake and exhaust ports can get sharp....like razor sharp. These edges can catch a ring edge in a heart beat. Or...can actually catch the side wall of a piston. When either/or of the above happen, usually, all the money ya' spent goes down the drain. Breaking the edges just means the machinist takes a file and goes around the sharp edges and takes the edge off. This will relieve the probability of the sharp edge doing damage.

 

[Hotrods]

Re: Sticky rings??

I would hope they would know that..lol, they do..do alot od marine engines. and thank you OBJ and all! for all your help..AGAIN..

 

[Hooty]

Re: Sticky rings??

While you're in there, ya better check the rest of the pistons and cylinders, clean all the ring grooves and install all new rings. Coke build-up in the ring grooves is probably what caused the ring failure in the nr. 1 cylinder.<br /><br />c/6<br />Hooty

 

[Hotrods]

Re: Sticky rings??

I am boring and replacing all pistons and rings. For little more $ thought i would just go all the way and do it right. My only worry id the vacumm lines. hope i remember where they all go..eekk