'95 Crownline 5.7 Mercruiser Rebuild Part 7 -- Valve Stem Seals and Piston Ring Groove Cleaning
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- čas přidán 27. 08. 2024
- In Part 7 of this series, I show how to clean piston ring grooves on a 5.7 Mercruiser 350 SBC. The pistons are being reused so they have a bunch of debris built up behind the rings. I use a piston ring groove cleaning tool to remove this debris quick and easy. I also go over the head work that was done on this boat engine. The heads were trued up and reassembled with new valve stem seals. I went with positive style valve stem seals rather than umbrella style valve stem seals. These are a more modern and high performance design but the heads did require some machining to make the upgrade. I also installed new Z/28 valve springs.
To purchase the Lisle Ring Groove Cleaning Tool used in this video:
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#350Rebuild #Mercruiser #SBC
What shop did you send the heads to?
Just a local machine shop. L&L Machine Shop in Yankton SD.
Do they have a contact you know of? Or the cost
Their phone number is on Google. Really anyone can do the job. Nothing special about these heads compared to a Chevy truck of similar vintage. Installing new seals, machining the guides down and milling the head flat was like $300. Idk if that was a good price or a bad one but they are local and easy to work with and quick turnaround so that's what I did.
Very informative 👏
For the grease monkeys.
Cool 😎
Thanks man. These are kind of boring vids I think but I hope they help someone if the get in a bind with a boat.
Thanks a lot for the video! What’s the manual that your using to look at the specs of the compression ring?
All the ring end gaps are taken from the SELOC sterndrive service manual #3206 section 5-40. The height of the rings was measured with a caliper so I knew which rings to order. It is based on their thickness.
So what z28 valve springs?
This is what I used.
www.speedwaymotors.com/Speedway-Racing-Valve-Springs-1-25-Inch-O-D-Set-16,88.html