Yanmar 1GM Diesel Re-Assembly and Start-up - Voyage Dreams 89 

Thank you. It was a real relief to see such a dramatic improvement.

You're welcome!

It really will be a relief to have this engine back in the boat. There's a bit more work to do yet on the boat, but all in good time. Thank you

Thank you!

It was a huge relief. Thank you

Thanks for the tip

I ended up replacing the two oil lines under the engine with flexible high pressure lines fabricated by my local hydraulics shop they worked perfectly. They water drip is your tell tale that the first seal has failed. Easy to change but drain half the oil first or you’ll find it drains through the hole when you take the pump off. Speed seals are indeed a uk product and work really well on the 1gm where the pull my obstructs the cover bolts making it easier to take the pump out to do an impeller change !

Glad you enjoyed it!

Thanks for you comment. Best wishes for your upcoming work.

Thank you, I much appreciate it.

Thank you

Thank you!

Thanks for that, Nick. With your input I find that they're called the same thing here. And now I know what to look for when I search for some spares. All the best to you

You're very kind. Thank you

Hi Marty! I'm fairly sure I used a 240 grit hone. My thought was to avoid getting too aggressive with it, but I also needed to clean up some small grooves so didn't want to go too fine either. In the end I kinda guessed and it worked out well for me,

Hi Phil, thanks for watching. I was skeptical of the blocked holes too, but that is by Yanmar's design.

@@VoyageDreams thanks for your message back. I will just fit it then… all the best Phil.

That's lofty praise indeed. I used the boom, a halyard, and a chain hoist. I'll try to include more of that when I install it.

You're welcome, though I'm clearly no authority. In the case of my engine, I tend to think replacing the rings has the greater effect; but if you're going to replace the rings you might as well grind the valves too.

There is an authorized Yanmar repair/parts shop near the boat. I ordered direct from them. You should be able to order any parts you need from any authorized Yanmar shop. Mine, Cook Engine in Portland, Oregon, shipped parts to me when needed.

The service manual indicates the use of "Three Bond 50". Not even the Three Bond Corp knows what that is anymore, I asked. So I used Permetex Ultra Grey on both side of the pan gasket, hoping it will do what it needs. The last time I removed the head gasket it was a mess and had to be scraped off. The gasket dressing should allow me to remove the head gasket in one piece if/when I need to remove the head again.

Thanks for your question. Honestly, I don't recall. The service manual indicates that the OEM head gasket is marked with "Top" on the side that goes against the cylinder head. I likely don't remember what the surface was because I just followed that instruction.

Virtually all parts for this engine were purchased from a local authorized Yanmar shop, Cook Engine in Portland, Oregon. I'd email a list of parts needed (part number + description) and they'd reply with an invoice including shipping (if needed). Very simple to pay by credit card with a quick phone call after that.

Can you be more specific?

To the best of my recollection I fueled up at a marina station, in Astoria Oregon

@@VoyageDreams I only asked because I hear the best Diesel is the color Pink, which I thought I seen yours was pink when you bled the fuel lines.

I had to look into this, but it seems that the pink Diesel is simply fuel that is not intended for road fuel here in the USA. It is not taxed the way road Diesel is taxed and is illegal to use for on-road vehicles. I don't know if it's any better quality, but it likely has a greater amount of sulfur in it. @@lionsdejudah

@@VoyageDreams o you were using the Dyed Diesel. Ok, but I hear Germany has better Diesel fuel than the US and the color is close to pink. I’m currently trying to find a better quality diesel. Dyed diesel is just regular diesel with like food coloring in it, it’s so when a trucker gets stopped the DOT can tell if he’s breaking the law by filling up with non taxed off road diesel.

Thanks for watching, Doug. I didn't keep track.