New camshaft, break-in

I sure do like the sound of "Springtime in Ohio"!

During the break-in, we didn’t get to hear much sound. We were busy checking and watching things.
I was going to maybe take a video but completely slipped my mind
Maybe when we turn it up to set the timing, I can take a video. I’m not sure we can put videos on this site?
I do have a video of it running if someone can tell me how to put it on the site. It’s just a video of the back of the boat.

Nice work and good timing, summer is almost here.  How did your engine sound?

DenDen wrote: . As of today, we just bolted on in new Holley Marine Avenger 570 4 barrel carburetor. We will set the timing and wait for warm weather.

I realized I did not finish this post. Some of the answers are on another post so I will tell you how this project went.
Started the boat with a little difficulty, but got it going soon.
We installed some clear hoses so we could see the water flow
The boat came up to temperature and balance between 160 and 180 the entire time
Exhaust manifolds stayed nice and cool until the thermostat would open and then they would warm up slightly to about 120 to 140°

I ran the boat at 2000 RPMs the entire time as I talked to the cam manufacturer, and we also got the lifters from and that is what he said to do.
After all this discussion and worrying everything went fine.
As of today, we just bolted on in new Holly avenger4 barrel carburetor. We will set the timing and wait for warm weather.

We did an abbreviated cam break in on HWs 351 (paid for the break in from cam research but were being cautious).

10-15 min at 1800-2200 rpm’s on my well hose bypassing the RWP direct to the stat housing. Ran dead on 140 the entire time with cool manifolds etc. that’ll be my method going forward for out of water initial run in.

Copied and pasted from over on ths shamrkck site pcm engine sherwood pump.

(Probably not the same pump model as on the ski boat) --- ballpark.

I looked up the GPM comparison between the two pumps, and the Sherwood definitely moves more water. In this summary, the Sherwood numbers are on the left:

1000rpms 9.5gpm(Sherwood) vs. 5.2gpm(Johnson)
2000rpms 19.5gpm / 12.0gpm
3000rpms 29.0gpm / 18.5gpm
4000rpms 32.5gpm / 24.5gpm
4500rpms 30.0gpm / 25.5gpm

KENO wrote: TRBenj wrote: Unless you have real weak water pressure, why not just use a tee on the inlet (one side open to the pick up) and connect the hose to that? Bucket method is great for troubleshooting cooling system issues but not sure why you’d want to use that for cam break in. He's not, he wants to bypass the pump and supply the engine with his garden hose with some as of right now unknown amount of flow, but if he fills a 5 gallon bucket in "X" amount of time, he'll know his flow rate from the hose. j

Still not following the “why”. He’s resorting to that method because he knows the bucket method won’t keep up, right?

I wouldn’t be attempting a science project during cam break in, but that’s just me.

TRBenj wrote: Unless you have real weak water pressure, why not just use a tee on the inlet (one side open to the pick up) and connect the hose to that? Bucket method is great for troubleshooting cooling system issues but not sure why you’d want to use that for cam break in.

Ken, you are right. Even if I know the gallons per minute out of my hose. I still have to know how many gallons per minute that raw water pump is capable of pushing.
Does anyone have any idea?
I posted the question to see if anyone had been able to run it on a garden hose and I got the answer as yes they had. So I was going to try it.
If anyone has any figures on that, I’d be happy to see them.
What I feel is even more of a gamble now that I’m talking to everyone is this camshaft break-in.
It seems to me I’m rolling the dice on that.
I am currently gathering more information on what I have assembled. Such as Spring pressure on those summit heads?
Run without valve covers to make sure pushrods are turning? That’s gonna be messy!
As of right now I’m at a loss.

Remove the impellor from the raw water/sea pump, with the pump plumbed normally and belt on to spin the circulating pump and alternator.
Hook up the garden hose inline with the water intake hose as you would if the engine was in the boat so the transmission cooler gets water
(don'tknow what type of engine stand you have or if the transmission is intalled)

Make sure you have 3-4 feet of exhaust hose clamped onto the exhaust risers and turn on the hose. The water bypasses the thermostat to cool the exhaust upon start up, but without the sea pump impellor and with the engine not running you will get water flow.

Water may still fill the cooling passages in the block via a / the tiny hole in the thermostat, so wait to start the engine once water begins to flow from the exhaust hoses (or pre fill the block thru the t stat housing hose) turn on the water and start the engine.

No sea pump impellor means the garden hose wont get sucked flat causing the sea pump impellor to burn up at the rpm you are planning to run for that time period.

Depending on city water pressure, hose dia and length etc etc and so on you may be able to turn the hose down based off how the manifolds feel to the touch once the engine reaches operating temp. Realistically it's more fun to stand next to the engine when it's running rather than trying to adjust the garden hose to the dance the t stat is doing.

Besides at wot the sea pump is moving a lot of water thru the bypass and out the manifolds so the garden hose will never be too much.

Edit in video. This is no sea pump impellor installed, first start of the engine 2 boats ago.
https://youtu.be/A3HnTwI24UQ?feature=shared

I have an Oil pig, basically a tank that holds about 8 quarts of oil, It has one hose that attaches at the oil sending unit in the block and you attach an air hose with 40 PSI to the pig and it will pump the oil galleries full of oil in about 45 seconds with 40 psi.  Works well for pre oiling an engine.

No priming of the oil pump prior to starting the cam break in process?

Thanks so much Mark for the information. I don’t believe I can get any better advice anywhere.
Just to answer a few questions, anyone has. We are going to put the motor in the boat before running it.
We were going to do that today, but will wait for strut bushings to show up at the end of the week and probably get around to it next week.
I am getting anxious to finish the boat and I think it’s going to turn out very nice. Mostly due to my participation in this forum.
I can’t express how much apart of the CC family I feel.
So many people have been so helpful.