SEA RAY engine info

Friend recently bought a used 32-34 SEARAY sedan delivery with twin 350 cid engines. Recent repowered and cant get the left engine to start so I am getting involved. I am not the least bit familiar with inboards and am impressed and befuddled when I look at the thing. Obviously the first thing he has to do is get a manual for this thing but where ?
The engines are closed cooled 350 chevys. Built by SEAMAC or PMC. Over the bar he tells me that the engine co. is out of business also that he heard that up until a few yrs. ago the builder used FORD blocks and adapted the accessories to work on the CHEVY. Nothing wrong there, an engine is an engine, ran into that in the 60s with a GREY MARINE 327 RAMBLER with accessories from all over the map. Can anyone give us some guidance on learning about this thing ? Dont believe a SEARAY manual would help us as this is a repowered boat. Also the big tank at the stern that the exhaust goes into, is that just a muffler or a catalitic converter as the owner says? Raw salt water is fed to the exhaust manifold after leaving the cooling heat exchanger. The on board generator does have a catalitic converter.
Pretty impressive hunk of equipment, expect he will have his hands full keeping up with this thing. Thanks for your time! FRED

Re: SEA RAY engine info

Ford withdrew from the marine market about 1995, since then most marinizers have used GM block assemblies with their own add ons,
is this motor carbed or EFI.
I work with PCM engines quite a bit. nice stuff but in a shamrock totally inaccesible.
some good pictures would help.
and the seamax,depending on actual year model, could have a catalytic converter, I doubt the genset does.

Re: SEA RAY engine info

Thanks for your response. Just had a chance to check under the hood recently. Friend thought it was a throttle body but I pointed out it has 8 injectors. So far things look pretty accessable and impressive. Everything is new and shiny. I will try to get more info today.
gen-set looks kind of new. 3 cyl also closed cooling system. Exhaust manifold/ collector is about as big as the engine. Made by some company in MASS. regards FRED. Made a mistake, it is a sedan bridge not a sedan delivery. Miserable day today, 74 degs. and rainy. Stay warm up there!

Re: SEA RAY engine info

not up there, I am down here.
I am typing from Caracas Venezuela.
flight got canceled today so I gotta show up at the airport at 3:30 am on friday for a 6 am flight.
something about a storm in Atlanta.
anyway looks like I will get to the Blue Crab just in time to freeze.
on the no start, when you turn the key on engine off, the high presure pump should run 3-5 seconds and give roughly 45 PSI on the fuel rail. rail has a schrader valve for testing if you have access to a test guage, its the standard GM MPI fitting.
spark can be tested in the conventional way, remove the wire from the dist cap hold it 1/4 inch or so from ground and crank,then do it again with a plug wire.
this will test the coils ability to make spark and the distributer cap and rotors ability to distribute it.
if you have spark and fuel pressure this will leave mostly 8 clogged injectors,not likly but possible, or an unplugged injector harness or a bad driver circuit in the ECM
the injectors will have 12V on one side anytime the key is on, they are operated ground side in the ECU.
make sure if it as rigged with a kill lanyard that the lanyard is in place and operable.
if its a no crank situation then check the nuetral safty switch normally located on the clutch assy with yellow/red wires on it.

Re: SEA RAY engine info

Hey Fred, I am kinda handy with engines and troubleshooting. Let me know if I can assist.

Re: SEA RAY engine info

Learning a bit more about this set up. I was under the impression that these were recent reengined irons. Turns out they are 03, 350 cu. supposed to be low time manufactured by PCM. Starting problem has also developed on the right engine. Finally had him take take all the hatches off so we could get up close and personal. I am sitting by the right engine, when it finally fires, a flame shot out of the fiberglass exhaust coupling past 2 hose clamps which he said he had checked for tightness. He was happy that it did start so we go to the left engine.
When left engine starting problem first developed friend thought it was a fuel problem. I smelled raw gas when the engine was being cranked and suggested it was an ignition problem. Did manage for him to let me check the spark from the coil wire and found it to be a lot of red/yellow sparks , real fast like an oil burner ignition instead of a strong intermittent blue spark matching normal coil output. Eventually engine did start. Found that pushing the throttle up, out of gear, the engine would cough, stumble, detonate, rattle all sorts of comotion like a low level carb float bowl with no black smoke out the exhaust. Engine does have 8 injectors.
Shut engine down and then attempted a restart, ALL HELL BREAKS LOOSE. Engine starts and the big fiberglass muffler explodes with pieces flying all over the bilge. Inspecting the pieces, find this is/ was a substantional constructed piece of equipment, was one hell of an explosion. After the smoke cleared we installed the hatches and discussed it being a really good idea to call in the professionals. Can anyone recomment a good mechanic in the FT. MYERS , CAPE CORAL area that he could call in? Familar with PCM engines if that makes a difference.
Question while I am here. Friend found a fuel priming procedure on the on line owners manual . Key on for a few seconds, key off, wait, key on again, 3 or 4 times. I figured this was done after fuel filter inspection/ replacement not normal everyday operation. Never heard of it before. Friend thinks this fixed what he thought was a fuel delivery problem. Is this normal for a marine engine? Also, things cant proceed until he replaces the muffler. He cant find any that have 2 pipes in and one pipe out. Cant be that many manufactures out there making those things. Any one have any names? I figure it is original SEA RAY early 90s equipment.
RODBOLT, thanks for the advice but I cant get him to put a gauge on the fuel pressure fitting or check the drain on the canister for water. Am more or less watching the situation unfold. Thanks for your time FRED