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Showing results 1 to 8 of 8
Search took 0.00 seconds. Search: Posts Made By: Atcowboy
Forum: Engines and Propulsion Systems 01-08-2021, 07:24
Replies: 28
Views: 4,556
Posted By Atcowboy
Re: Worn rings on ysm8 yanmar?

I didn't know there was an app for that! I was planning on a slow motion video and manually counting revolutions.

3.5kts was average over the whole time, and not WOT. I guess it's nice to know...
Forum: Engines and Propulsion Systems 31-07-2021, 14:47
Replies: 28
Views: 4,556
Posted By Atcowboy
Re: Worn rings on ysm8 yanmar?

So far I've changed the oil twice, and each time I have cleaned the filter out. I change a spin on every time, this isn't much more work than that and gives one an idea of things happening in the...
Forum: Engines and Propulsion Systems 30-07-2021, 09:53
Replies: 28
Views: 4,556
Posted By Atcowboy
Re: Worn rings on ysm8 yanmar?

I remember to turn the oil filter "often" but I'm not every time. Maybe I should change leaving my keys in the engine block (to ensure I open the seacock) to hanging on the filter wing nut. I'm...
Forum: Engines and Propulsion Systems 29-07-2021, 07:34
Replies: 28
Views: 4,556
Posted By Atcowboy
Re: Worn rings on ysm8 yanmar?

Some new diagnostic news;

Engine started up easy again today.
Assuming an accurate oil gauge, oil pressure immediate jumped to 25psi, and climbed to ~30psi at idle in 20 seconds or so. After...
Forum: Engines and Propulsion Systems 29-07-2021, 06:13
Replies: 28
Views: 4,556
Posted By Atcowboy
Re: Worn rings on ysm8 yanmar?

I do have the service manual, and have been leafing through it.

I keep the boat in Mount Hope Bay MA/RI.

Those speeds sound fantastic to me, especially for a 25' boat, I generally consider a...
Forum: Engines and Propulsion Systems 28-07-2021, 19:06
Replies: 28
Views: 4,556
Posted By Atcowboy
Re: Worn rings on ysm8 yanmar?

It has what I'm assuming is an "inertial filter" I'll call it. It's a largish can that I assume changes the flow direction to settle out larger particles. I can try seeing if I catch anything from...
Forum: Engines and Propulsion Systems 28-07-2021, 17:52
Replies: 28
Views: 4,556
Posted By Atcowboy
Re: Worn rings on ysm8 yanmar?

She starts in just a few seconds I would say. I apply a little throttle preemptively, because she won't stay running if I don't. I think she's a little laggy, takes a while to spin up loaded or...
Forum: Engines and Propulsion Systems 28-07-2021, 15:46
Replies: 28
Views: 4,556
Posted By Atcowboy
Worn rings on ysm8 yanmar?

I have a 1979 CD27 with a ysm8 with an unknown amount of hours. Currently running saw 30 per yanmar recommendation.

The engine seems to always smoke a little, more under load or higher rpms....
Showing results 1 to 8 of 8

 
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