Evinrude 1987 140 v4 Rebuild

bigshrimpin said:
I didn't know that the v4's had the Bridgeport exhaust too in 86/87. Very cool motor . . . Even the rod slots look nice on that block . . . is that stock or did someone clean them up?
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Honest answer I do not know, I wish the Guy I purchase the MID/LU kept the damage Block I was looking forward to use it as a benchmark since the history of my power head is not known. Per the machine shop its stock, but then again he told me the block did not need decking!
 
All of the V4 loopers have the bridgeport exhaust IIRC, the V-6's are the ones that changed in 88 and then in 92 added the finger ports. The only real change in the V-4's was in 88 going to larger 3.625 bore from the 3.5" bore of earlier years. And remember NYMACK, I'm not that far away and I have a pretty intimate knowledge of the V-4 loopers.
 
THEFERMANATOR said:
All of the V4 loopers have the bridgeport exhaust IIRC, the V-6's are the ones that changed in 88 and then in 92 added the finger ports. The only real change in the V-4's was in 88 going to larger 3.625 bore from the 3.5" bore of earlier years. And remember NYMACK, I'm not that far away and I have a pretty intimate knowledge of the V-4 loopers.
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Thanks for the offer, I will let you know if I hit a wall , Did you see my answer in regards to the swap? Let me know if not I will proceed to rip it apart for blasting this weekend, I am very constructive/destructive on the weekend when I am not on call at work..
 
i have a pair of 1990 good 140 counters motors with 25" midsections i bought from BR yrs ago. mine have the 35 amp charging upgrade plus the larger V6 size foot.
 
I'm gonna have to hold off right now. I would really like to get it, but the wife is wanting a bigger boat now. She wants one where she doesn't have to sit on a bucket to go to the bathroom.
 
Dam FERM, I wish my wife would say that, I usually get "you are always buying something for that boat and not the house"
 
Crank Clean Up

I am not going to use the the Crank from my old power head since it clearly shows a flaw on one of the journals.
I purchase a replacement crank from Ebay not knowing I will pick up an entire engine so I now have two crank on going back on Ebay.
I have since clean up my crank and lube it with 2 stroke oil and wrap it in plastic until I am ready for it.
Here are the before and after photos (crank inserted on the mid-section during the clean up)
Old crank now obsolete see #3 ?
OldDamageCrank.jpg

Crank from ebay not cleaned.
CrankEbay.jpg

Nice and clean
Clean.jpg

clean2.jpg

clean3.jpg

testmountonspline.jpg


Let me know if I am boring you Guys with this rebuild..
 
These posts are not boring us at all. They do, however, make me feel inadequate. I could not even begin to do the stuff you are doing to the motor. Nice work.
 
Thanks Guys

Some updates, I successfully have the motor completely in pieces, I was going to experiment with the Media/Soda blasting myself. I did not it a messy job period, I dropped the parts off to shop last week, decided to use a new shop because of a cheaper price, huge mistake the new shop did not do a professional job period. I will never use him again.
I will post pictures clearly showing the paint he miss, parts not cleaned properly.
I will have to finish the job myself, the rest of the parts are off to my previously used shop which I am very happy using in the past, but a little more expensive. Cheaper is not always better I guess ...
I am educating myself on primers and paints and found a wonderful web site which in my opinion is very intuitive for a rookie like me. http://www.supermarinepaint.com
 
Just remember to use a ZINC CHROMATE or ZINCROM(the green colored stuff) etching primer on the lower unit and mid section, or anything in direct saltwater contact. The etching primer will help the paint adhere MUCh better than most any other primer can. And do not get it inside of the lower unit where the oil is or in the crankcase. It is an excellent primer, but oil will take it right off. I used it on a propshaft support before and got it on the inside portion of it and fluid turned to milk after just a few days. The primer came off and emulsified in the gear oil. Flushed it out and all was well afterwards. I figure if the stuff is good enough for aviation and is mandated by the FAA, then it must be good enough for a boat.
 
Update

Media Blasting I paid for sucks! I will clean up all the parts myself so much for me being lazy, no luck paying to get stuff done I guess.
I shot the cowling and lower pans last weekend with INTERLUX Brightside One-Part Polyurethane with Teflon from West Marine.
One amazing paint in my opinion, so good I will mount this on my Boat and pull the ones on my running engine.
I will post pictures later as I progress along. I took a self impose break from all this stuff and planted a garden which was no fun but relaxing.
 
I found a replacement power head (1/2) on Ebay minus all the corrosion show previously here are the new photos of the power assembled with all sorts of old bolts to protect the treads, Its now in my original media blasting shop then I will have each cylinder honed.
As for the MID and LU they are all zinc primed ready to paint.
Old Block

New Block




 
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