Guys,

We’re going to salvage the entire wiring harness for the PCM555. It will eventually go to the swap shop along with the 555 itself.

Finalizing wiring for the new harness for the Holley HP….
https://cimg3.ibsrv.net/gimg/www.off...966da0f40.jpeg
New engine harness connector.

https://cimg6.ibsrv.net/gimg/www.off...b9d0ab07d.jpeg
Ignition coil connectors.

Interestingly enough, the new engine harness has a slightly different bolt pattern than the original, so I had to slot the holes in the bracket, so I made a washer plate nut plate for it.
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https://cimg5.ibsrv.net/gimg/www.off...cf5c659dd.jpeg

While sorting out the rerouting of the cooling plumbing, I made another somewhat grim discovery….

https://cimg4.ibsrv.net/gimg/www.off...19740ad6b.jpeg
https://cimg5.ibsrv.net/gimg/www.off...3e377b33b.jpeg

OEM oil cooler. Probably a healthy contributor to the heat issues we were seeing in the months leading up to the failure, even if not really a significant contributor to the failure itself. Yes…. This is why I’m asking about sea strainers in the wanted section.

For the record, those impeller chunks have apparently been there since before we bought the boat. Every impeller we’ve taken out since buying it had all its bits.

Thanks. Brad.

boating mechanic 101 when having heat problems,,back flush everything.you supercharged that engine w/ that small cooler,bad idea from the start.

Sutphen,

We didn't add the ProCharger. We bought the boat as-is. This is one of the many faults of the ProCharger kits: It doesn't address this issue at all. We are swapping the OEM cooler for a 600SCI cooler and repurposing the OEM oil cooler as the PS cooler.

Thanks. Brad.

This is exactly the reason I decided to buy a sea strainer for my new-to-me 496.. mine is completely stock but why allow all that junk to make it into your heat exchangers when you can stop it before the motor and easily clean it... I didn't love the price, but I think it will be a worthwhile investment considering how difficult it is to get to my oil cooler when in the boat.

Guys,

https://cimg6.ibsrv.net/gimg/www.off...5aac9e886.jpeg
https://cimg7.ibsrv.net/gimg/www.off...60d96a175.jpeg
https://cimg8.ibsrv.net/gimg/www.off...2140a77fd.jpeg
https://cimg9.ibsrv.net/gimg/www.off...6061e3208.jpeg
https://cimg0.ibsrv.net/gimg/www.off...27b4ad091.jpeg

Fitting the new 600SCI oil cooler where the old PS cooler was mounted. This will also direct the water from the seawater pump to the oil cooler first, instead of the PS cooler.

Thanks. Brad.

What kind of water pickup allowed those pieces of wood to get in there??!!

Helmwurst,

We've just got the low pickup BravoOne lower. The debris isn't very big, but obviously big enough to not fit through the tubes in the cooler.

Thanks. Brad.

I am always amazed what can get through the Bravo water pickups. I even had a little fish in my sea strainer,,,,,,,, and it was alive!

Brad,
I'd run your steering through its full range and make sure it doesn't hit... that looks awefully close..
That aside, sweet setup, I like it! Might also want to put a foam pad between the HE and the angle bracket too to avoid any vibration from wearing through the shell.

AShipShow,

It's only close right next to the pivot, where it doesn't actually move, respective to the cooler.

I thought about that. I might get some neoprene sheet and wrap it between the bracket and the cooler. We'll see. I really don't see it moving much if we lock it down well enough with the hose clamps that will be holding it in place. Not a bad idea, though.

Thanks. Brad.