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Ford used to run iron to iron with no gasket on some engines exhaust manifolds believe it or not. Iron under pressure can be a great sealing surface that won't burn away when smoking hot unlike paint. I'd take that paint off with a flat file. My exhaust manifold directions actually rec to do...

Intake manifold quick test fit, everything seems to match up nicely. It's a Ford Bronco roller 302 that I will be marinizing for this project.

Surprise rebuild parts for the 302 🥳 compliments of my awesome brother! What a great surprise. 😁

The ol small block is getting a little taller before installation thanks to the new "Edelwok" dual plane manifold that came in. She's going to be running coolant through her veins so went with a nice light aluminum manifold that will actually fit my 302 with factory heads and 4bbl Holley.

I've only ever had a Quadra jet on an old yard truck, but it always seemed to run! Well hopefully I can get the Holley going with slightly smaller jets or maybe it will run as is. Still quite a ways off from starting it so time will tell. How many CFM is the quad on your 4.3, happen to know...

Picked up a nice lower cfm marine 4 barrel Holley to replace the non-marine 2 barrel Holley that I had. Came off a 351 Windsor boat. Thinking I'm going to go down a jet size or two. Anyone run a ~600 or lower cfm Holley on a 302 that has some input on this? I know they put both 2 and 4 barrels...

The log manifolds seemed hopelessly corroded inside, I didn't even bother digging all those huge rust flakes out of them. I think the rust was wreaking havoc with flow and insulating whole areas. It was discouraging to see but I decided to take the hit and commit to saving up for new, better...

Still haven't given up on her, thanks!

Interesting that they used a Y pipe on those systems you mentioned. Was that for convenience or is there an advantage vs just 1 larger seawater pump?

It is a really simple looking exchanger, much like the San Juan units I've seen. Has only 4 ports other than 2 small threaded drain or vent holes, 2 coolant, 2 raw water. It's supposed to be a triple pass I think. Made by Sen-Dure.

The system I read about that sounded the most like mine had the engine coolant controlled by the thermostat with a small bypass passage to keep coolant flowing through the exhaust a little even when thermostat is closed fully/still warming up. Going to have to find one like that probably. The...

I wasn't able to find an 888 full cooling sytem setup example from Mercruiser. This model seems like it wasn't as common so maybe there wasn't a factory full system setup, I don't know. Since the parts are rare if not non existant anyway- I am fine with doing a non standard setup/ copying...

Also, after thinking about it more, I am leaning toward not using the X raw water block. Like you said, without proper tear down and rebuild I just can't clean it that well.

Good point, I'll definitely need to keep the pump in there then. I already have a new one anyway. Too bad those pumps don't put out more flow bc it would be nice to use it for the heat exchanger and be done. If I kept the pump but removed the hose by the bellows and sealed the transom pass thru...

Thanks for the quick reply Scott, I will be running a full system so that the risers and HX will be the only raw water cooled parts hopefully. Definitely good to know the drive still needs to be cooled. Was really hoping to lose the drive pump though! Maybe I'll replace it with a drive shower...

Hello, I have a 1974 Mercruiser 188 / Ford 302 2V V8 with 888 (MC1 outdrive) that I have been working on. After pulling it from the boat for further inspection I have decided that the corroded log manifolds cannot be trusted so they will be replaced with nice new ones. I am working on...

454 big block heat exchanger for the small block. Passages inside look really clean, no tubes blocked off or evidence of repairs that I have noticed so far.

Thanks! Just grabbed a sweet 454 big block heat exchanger for the ol girl. Gotta protect the Ford Dino-drive you know. 🦖 Saves me the giant hassle of moving the distributor alll the way to the back.. lol Definitely going to paint it and get all that done before next season now that I have the...

Starboard log Port log Manifolds and Risers off to be cleaned and inspected later. Both sides have lots of old river sediment and rust flakes. Going to scrape it out and see what it looks like afterwards.