I think I need head

[sparkroost]

I got one head on a V4 that took a beating. All kinds of gouges from little balls making there way from the bottom. I got out my dremel and started cleaning the gouges up. After about 15 minutes of this "cleaning", I put the head down and said "fawk it".<br /><br />I am having doubts using this, what do you think? Stealer said I could use it. I am worried about hot spots, early detonation and loss of compression. Am I overexaggerating?

 

[papasage]

Re: I think I need head

hi sparkroost. we all need a new head . just joking you know how we southerners are . if it isent real bad i would use it . i am using one now that was nicked up pretty bad . havent give any trouble yet.papasage so. ga.

 

[Bob in Calif.]

Re: I think I need head

Hey spark....What kind of engine, year and HP do you have, that you need a head for? I have two extras off a mid-80 to late 80's Evinrude/Johnson, 85 HP., right and left bank. ...Bob in Calif..

 

[Joe Reeves]

Re: I think I need head

Sparkroost.... Cylinder heads that have been pitted with steel particles due to having a piston ring or bearings fail, whatever the cause may be should never be reused.<br /><br />It is impossible to remove every bit of the steel that is logged in that cylinder head dome, and those pieces will glow (when running) like a glow plug of a model airplane engine. This results in pre-ignition which will in time cause a piston to disintergrate.<br /><br />List the model number of your engine and which head is damaged (port/starboard) and possibly someone here cna help you out with a perfect used one. Also on the head itself, there is a part number listed which, if you can locate it, would pin the particular head down.

 

[sparkroost]

Re: I think I need head

it's a 1973 115 evinrude. I think it's the right bank(head with the thermostat in it). I would rather get a good used one. If anyone has one please let me know

 

[heatherjoy]

Re: I think I need head

I have rebuilt snowmobile 2 stoke engines with such damage to the heads, and you know, my snowmobile blew the crank 2 seasons ago, pitted the heads.<br /><br />I used sandpaper to clean them up and low and behold, 3,000 miles later it runs fine.<br /><br />I run this motor up to 9,000 RPMS all the time- I may keep it at this RPM for miles at a time. Never heard of any problems.<br />-John

 

[OBJ]

Re: I think I need head

sparkroost....have to agree with Joe Reeves. A long, long time ago when I first started fiddlin' aroung with outboards, I rebuilt one that had blown the rings. The head was full of dents and pieces of ring material. So I said, can't hurt. So I cleaned them up much like you tried and put it back together. Almost a year later to the day, the darn thing went south on me. I am a heavy boater and I use my motors. So I pulled the heads. The cylinder that blew was the one with the pits and left over metal from the last rebuild. The others were perfect. Don't take a chance. At least get a good used head. That was my $.02 worth. Good Luck!

 

[sparkroost]

Re: I think I need head

I think I am going to have to agree with you in favor or replacing this one. Part #317849H. I do think that in some cases dremeling it out would be ok. In my case there are some pretty good gouges. It just don't feel right using it. I have comletly stripped the entire motor of paint. re-surfaced all gasket areas. This thing looks like new. I hope to get some years outta this motor.<br /><br />I appreciate all your help! Any tips would greatly be appreciated!

 

[OBJ]

Re: I think I need head

The best tip you could get is, "If ya' don't got a manual, get one". The OEM manual would be best for you. It will have step by step instructions on putting the engine back together.<br /><br />Good Luck sparkroost! If ya got questions, usually someone is around here to help.

 

[sparkroost]

Re: I think I need head

That's one of the first things I got for the motor. I have one of the OMC 1972 manuals(I have a 73 motor). Excellent manual! Better than the P.O.S. generic one they have for sale at most boat stores. I have been reading through it the past few months during this project. Thank God I am not in a hurry! <br /><br />I realize there are some additional "tricks" that are not mentioned in the book. Since I lack the experience of doing many of these motors I am trying to educate myself mentally before I physically turn screws. Anyone can put a motor together.. But will it last...

 

[sparkroost]

Re: I think I need head

If someone had a head for this 1973 johnrude, part #317849H, please email me at kismet@houston.rr.com<br /><br />THANKS