Thread: Harmonic balancer on 454 has 4 timing marks.....

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Originally Posted by pat mccarthy

if there nothing to build off of i can build you a long block using my cores or i can get a dart big m block build a pump gas flat top piston hyd roller cam 540 to 565 cid with dart heads or use you heads if there good

Gas prices on the water are ridiculous, I mean at least a dollar over land prices. And it's crap gas. If your running boost or high compression, you dont get your gas on the water. At least not on the Ohio River in Cincinnati. I dont have a trailer and really didnt plan on getting one anytime soon. So I'd like to save on gas as much as I can.

Unless I start getting it on land, putting it in 50 gallon barrels and wheeling to the boat, which seems like a lot of work considering the tank holds 105 gallons. LOL

So really I'd like to stay with a mildly aggressive 454. Plus if I went bigger than that I've have to start worrying about the outdrive. As you know Pat those cost just as much as a motor.

I'll see where the leakdown takes me. I know I got room on the block, if needs re-worked. As for the heads, if good, maybe I can work a Craigslist trade and downgrade.

no if i built a 540 for marine use for you or any one using dock fuel i would stay at 9to5 i have the long block mark6 roller 330 hp merc if your bottom is shot or a mark 6 roller 489 long block

sounds like condensation on cool down---engines need to get the oil hot enough to vaporize any moiseture in the oil and be vented good enough (pcv or such) to run the moisture thru with the combustable mixture to burn it and discharge it with the exhaust----

Originally Posted by jerry clayton

sounds like condensation on cool down---engines need to get the oil hot enough to vaporize any moiseture in the oil and be vented good enough (pcv or such) to run the moisture thru with the combustable mixture to burn it and discharge it with the exhaust----

I agree. I've seen similar deposits in the rocker cover area on engines that see mostly short runs in the city, never getting a chance to fully warm and cook off moisture. Lubricants have similar molecular makeup with basic soaps, and can build creamy off-white gunk that needs to be vaporized.

That makes sense. The motor has never run long. Its obviously in an area where moisture is abundant. Plus it doesnt have a closed cooling system. It's constantly drawing in cool water and blowing the warm water back out the exhaust. So it stay cooler than most motors.

Originally Posted by repoman3809

That makes sense. The motor has never run long. Its obviously in an area where moisture is abundant. Plus it doesnt have a closed cooling system. It's constantly drawing in cool water and blowing the warm water back out the exhaust. So it stay cooler than most motors.

there no PCV on the boats you blow it in to the flame arrester so it not getting pull out so boat heads can get funky .so heat is the only way it burns out some may draw out of the vent tubes to the arrstor

Originally Posted by pat mccarthy

there no PCV on the boats you blow it in to the flame arrester so it not getting pull out so boat heads can get funky .so heat is the only way it burns out some may draw out of the vent tubes to the arrster

I noticed that.

The motor has a air breather on the right valve cover. Think for future motor, it should be switched to both lines back to flame arrestor? Or you think the air breather is better? The arrestor does have hookup for 2 lines. It's set up where the line off the left valve cover tees off in both arrestor hookups.

Originally Posted by repoman3809

I noticed that.

The motor has a air breather on the right valve cover. Think for future motor, it should be switched to both lines back to flame arrestor? Or you think the air breather is better? The arrestor does have hookup to 2 lines. It's set up where the line off the left valve cover tees off in both arrestor hookups.

use what you like long as it UL coast guard .one tube off each valve cover to the arrestor