KRH1326
Chief Petty Officer
- Joined
- Sep 22, 2007
- Messages
- 491
Hello Everyone,
I am in dire need of the guru's advice on this one. I hope Don S., Bond-o, Maclin,Bubba1235, Flargin, MikDee, Bruceb58, Bt Doctur, anond, a70eliminator and the like are online.
I am working on my 1976 OMC 235 HP (351w) electric shift.
I have been battling a poor performance and lack of WOT issue for some time, as noted in lengthy posts:
http://forums.iboats.com/showthread.php?t=318086
http://forums.iboats.com/showthread.php?t=319080
http://forums.iboats.com/showthread.php?t=315311
Yesterday and today, I have found and corrected several problems.
Adjusted lash on port heads.
Found that I had #2 and #4 plug wires crossed. (stop laughing)
Found that distributor weights were hanging up.
I pulled my distributor, peeked in to see oil pump shaft still in place, or so I thought, and worked on distibutor.
Cleaned up weights and springs, and lightly greased. I put the distributor back in, it was a little tough and did fight me. Had to pull back up and realign a couple of times, but finally got it in.
Took a little playing to fire up, but when it did, that momma sounded the best it ever had, I put the timing light on it, turned distributor a touch, then for no reason at all, I went up to bridge to look at the oil pressure. ZERO.
I raced down to the cabin helm, where the key was on, to kill it. On route I heard and I quote " PING! ..... CLUNK!". I got to the key and killed it.
Didn't see oil in the bilge, and SLOOOWLY while saying my prayers ran my hand under the pan. Nothing. It did sound like it went through the pan.
I pulled the distributor and saw no oil pump shaft. I rowed back in and got a mini mag lite and peeked around. Can't see it. The hole for the distr. base/ shaft was just a hair too small to allow the telescoping magnet that I have to pass. I could see the hex socket of the oil pump. The shaft didn't break off and leave a piece. I was able to slip a long screwdriver down and engage hex socket. Turning CCW (normal rotation) resulted in turning pump and definately moving oil.
The engine was turning for no longer than 10 mins. before this catastrophe struck. I don't know if the pump shaft failed right from the start, when the sound occurred or somewhere in between. It did not develope any kind of smoke, even when I pulled the distributor. I know that I put that damn tinnerman clip on when I installed it back when.
I packed up and called it quits for the day.
My question for you guys is this:
Do I get a new oil pump shaft, try to install it into the pump from above, then try to get distributor back in, and hope that the old shaft is laying flat in the oil pan, and not standing up behind the timing gears - OR - have my boat hauled and trucked home, so I can pull the engine, flip it and go from there.
If I have to pull the boat, I think that sounds the death knell for me on this season.
I have already resigned to the fact that I know squat about what work has been done to this engine over the years. But just finding that it has been bored 40 over already, makes me want to find and rebuild another running and untampered block and heads. So I do plan on repowering in near future.
Just do I try to save this season with a shaft, and hope for the best?
PS- If I try to install a shaft, I plan on grinding and shaving a socket( that will accept shaft) down to fit through hole. Weld that to a rod that I can turn to seat it in to pump socket. I would stick a strong magnet on this to keep hold of shaft. Once seated in pump, remove magnet, remove improvised tool, try to install dizzy.
I am in dire need of the guru's advice on this one. I hope Don S., Bond-o, Maclin,Bubba1235, Flargin, MikDee, Bruceb58, Bt Doctur, anond, a70eliminator and the like are online.
I am working on my 1976 OMC 235 HP (351w) electric shift.
I have been battling a poor performance and lack of WOT issue for some time, as noted in lengthy posts:
http://forums.iboats.com/showthread.php?t=318086
http://forums.iboats.com/showthread.php?t=319080
http://forums.iboats.com/showthread.php?t=315311
Yesterday and today, I have found and corrected several problems.
Adjusted lash on port heads.
Found that I had #2 and #4 plug wires crossed. (stop laughing)
Found that distributor weights were hanging up.
I pulled my distributor, peeked in to see oil pump shaft still in place, or so I thought, and worked on distibutor.
Cleaned up weights and springs, and lightly greased. I put the distributor back in, it was a little tough and did fight me. Had to pull back up and realign a couple of times, but finally got it in.
Took a little playing to fire up, but when it did, that momma sounded the best it ever had, I put the timing light on it, turned distributor a touch, then for no reason at all, I went up to bridge to look at the oil pressure. ZERO.
I raced down to the cabin helm, where the key was on, to kill it. On route I heard and I quote " PING! ..... CLUNK!". I got to the key and killed it.
Didn't see oil in the bilge, and SLOOOWLY while saying my prayers ran my hand under the pan. Nothing. It did sound like it went through the pan.
I pulled the distributor and saw no oil pump shaft. I rowed back in and got a mini mag lite and peeked around. Can't see it. The hole for the distr. base/ shaft was just a hair too small to allow the telescoping magnet that I have to pass. I could see the hex socket of the oil pump. The shaft didn't break off and leave a piece. I was able to slip a long screwdriver down and engage hex socket. Turning CCW (normal rotation) resulted in turning pump and definately moving oil.
The engine was turning for no longer than 10 mins. before this catastrophe struck. I don't know if the pump shaft failed right from the start, when the sound occurred or somewhere in between. It did not develope any kind of smoke, even when I pulled the distributor. I know that I put that damn tinnerman clip on when I installed it back when.
I packed up and called it quits for the day.
My question for you guys is this:
Do I get a new oil pump shaft, try to install it into the pump from above, then try to get distributor back in, and hope that the old shaft is laying flat in the oil pan, and not standing up behind the timing gears - OR - have my boat hauled and trucked home, so I can pull the engine, flip it and go from there.
If I have to pull the boat, I think that sounds the death knell for me on this season.
I have already resigned to the fact that I know squat about what work has been done to this engine over the years. But just finding that it has been bored 40 over already, makes me want to find and rebuild another running and untampered block and heads. So I do plan on repowering in near future.
Just do I try to save this season with a shaft, and hope for the best?
PS- If I try to install a shaft, I plan on grinding and shaving a socket( that will accept shaft) down to fit through hole. Weld that to a rod that I can turn to seat it in to pump socket. I would stick a strong magnet on this to keep hold of shaft. Once seated in pump, remove magnet, remove improvised tool, try to install dizzy.
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