'95 Crownline 5.7 Mercruiser Rebuild Part 6 -- Honing Cylinders
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- čas přidán 27. 08. 2024
- In Part 6 of this series, I show how to hone cylinders of a 5.7 Mercruiser 350 SBC. The cylinders had no real damage other than a few water spots and very little cross hatching. The hone cleans up the defects and restores the cross hatching texture to the cylinder walls so that new rings can seat and the cylinder wall will hold oil properly. In the second part of the video, I clean up the cylinder heads and remove the worn out and broken valve stem seals.
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#605BOLT #Mercruiser #SBC
There's several ways water can get in...
Be sure to inspect your exhaust manifolds as well for cracks..
Thats a good idea. I'll be doing that before install them back on!
@@605BOLT I bought a boat this summer with a bad engine, water and bent connecting rod,# 7 cylinder...in my case I bought a new engine from summit racing 5.7 chevy. But I did check everything I put back on the new engine. I can only assume the old engine was cracked, or head gasket, but it was sitting so long before I bought it that it was rusted up pretty good , so I paid about 2,200 for remanufactured. It an atk brand from summit racing if you have to go that route, good luck friend...
@@fredflintstone7778 this is great info. Hoping this lump will fire up and be good to go after rebuild but if it doesn't I will probably throw a wrench or two across the shop and pull up summit.com hahaha. Because it will be springtime by then!
@@605BOLT I built many engines in my day, but for the price I couldn't hardly beat it..
I have a short vid on CZcams of it on the lake last October.
I'm in mn, so had to run it and winterize it right after that..also..its a good idea to check the water flapper valves that's located in the y pipe of your exhaust system..its not to common but water can back up into the engine if they are burnt out.. even if that didn't cause the water intrusion, do check them out for future insurance..like if you back your boat into the lake water can be forced into exhaust and down into the cylinder..good luck..!!!
@@fredflintstone7778 ya I had heard about that. Mine are kind of tired and got hot at one point. Can't say if it was this occasion or some other. I'll be replace them when I install them. One manifold was basically new and another looks older. I'll test those too. Over in SD here so we're practically neighbors!! But neither of us will be floating anytime soon. Haha ❄️❄️
Nice vid, need to adjust your talking volume vs your music. Music it quite a bit louder.
I see this now. It was good on my laptop but on the TV it's not great. Rip to tv users.
@@605BOLT 🤣
I guess you’re doing this and I must’ve missed where you found. The water was coming from.
The boat had 1000 hours on it first of all and I thought it was a head gasket. Turned out to not be that from what I could tell. Maybe I just couldn't see an obvious spot. Or it was a micro crack in my exhaust manifolds (see that video), or it was water leaking through my tarp, onto my sundeck, down through the drain hole in my sundeck, onto the spark arrestor, down into the carb, and into the cylinders. Now I have a fresh engine (in case it was the head gasket), new manifolds (in case it was the manifolds leaking), and a new tarp (in case the tarp was leaking). And I have no engine water problems so thats great! haha. At this time I was just trying to know what I was working with.