Evinrude 1987 140 v4 Rebuild

[willy]

What do you mean rotted out, from the inside Ferm, the lower unit rots from the inside?

[THEFERMANATOR]

Originally Posted by willy

What do you mean rotted out, from the inside Ferm, the lower unit rots from the inside?

The steering arms are made of regular steel and are known to rust so badly that they will break off, I believe STINK had this happen to him on one. Also just trying to find a 25" leg V-4 140 looper is difficult in and of itself, let alone one that looks clean without massive corrosion on it. The hardest one to find though is the 85 25" leg 140, they have a special exhaust tuner in them that you can't buy anymore. They make HUGE power on the top end, but suck below 3800. My 140 has the 85 tuner in it and it runs it's best at the 6100 redline(86+ went to a 6700 limiter). I bought one here awhile back and when it showed up I was less than thrilled with this supposed freshwater mid section. If you want to get rid of that mid NYMACK, let me know. I'd love to be able to put my 140 on my HYDRA-SPORTS to save some on fuel, but it is currently a 20" shaft.

[nymack66]

Guys,
Below is a thought process I read on another blog strong believer in it.
"Having to rebuild a engine is fixing the symptoms of a failure, so one MUST find the reason for the failure and fix it, if not plan on fixing again"

With that said I will post the various things I find along the way some Evinrude CSI work :) if you will.

I may or may not find it or should be too concern because the baby will be built with care and love with a fine tooth comb, any future failure is mine to own, the buck stops here with me.

At the time of purchase the previous owner give me and I quote "Here is new set of plugs for the engine"
Trouble is this kind of plugs does NOT match the Evinrude plug recommend charts?
QL77YC
Funny I found on the Internet this plug matches a Mercury motor, which I saw in his yard mounted on 18' CC Wellcraft.
I also observe some scaring on the connecting rod journal on the #3 cylinder ?
Idle jets were jetted up .20 (Factory is .16) I did not check high speed as yet they should be .64 stock

[nymack66]

Originally Posted by THEFERMANATOR

The steering arms are made of regular steel and are known to rust so badly that they will break off, I believe STINK had this happen to him on one. Also just trying to find a 25" leg V-4 140 looper is difficult in and of itself, let alone one that looks clean without massive corrosion on it. The hardest one to find though is the 85 25" leg 140, they have a special exhaust tuner in them that you can't buy anymore. They make HUGE power on the top end, but suck below 3800. My 140 has the 85 tuner in it and it runs it's best at the 6100 redline(86+ went to a 6700 limiter). I bought one here awhile back and when it showed up I was less than thrilled with this supposed freshwater mid section. If you want to get rid of that mid NYMACK, let me know. I'd love to be able to put my 140 on my HYDRA-SPORTS to save some on fuel, but it is currently a 20" shaft.

For you ? One word Absolutely!
I have a 20" on the V currently and I did cut down the transom as you remember during the rebuild for the current motor, the 25 " is perfect for you and your 20" floats my boat...

[bigshrimpin]

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?

[nymack66]

Originally Posted by bigshrimpin

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?

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!

[THEFERMANATOR]

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.

[nymack66]

Originally Posted by THEFERMANATOR

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.

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..

[nymack66]

Originally Posted by nymack66

For you ? One word Absolutely!
I have a 20" on the V currently and I did cut down the transom as you remember during the rebuild for the current motor, the 25 " is perfect for you and your 20" floats my boat...

Ferm my offer still good if not I found a guy with two 25" for sale in Winter Haven
http://lakeland.craigslist.org/boa/1475276327.html

[Skools Out]

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.