Perkins 4.108M DIY Rebuild -- A Narrative - Page 28 - SailNet Community
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post #271 of 279 Old 10-09-2015
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Re: Perkins 4.108M DIY Rebuild -- A Narrative

Narrowboats are so cool and yours looks like a nice one.

But please....learn to rotate pics before you post them - my neck doesn't rotate well anymore.

I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.
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post #272 of 279 Old 10-09-2015
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Thanks! I'll get some more images next week . Yup it's a 50ft Mel Davis hull about 1997. Our home too. I reckon the engine is very old but runs nice just needs some TLC!
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Re: Perkins 4.108M DIY Rebuild -- A Narrative

Quote:
Originally Posted by PorFin View Post
[B]...

As SJB suggested, I decided to seal the areas of the block and head with Glyptal. Lots of varying opinions out there in the interwebs about the wisdom, utility and benefit of doing this; some folks swear by it, others raise worries about the paint coming loose and plugging up the oil pump and/or oil galleys. Others raise worries about the paint's insulating properties retarding heat transfer from the oil out through the block and oil pan. What ultimately swayed me in favor was that it had been done to this engine before and it looked to be holding up just fine.

...











A few comments about Glyptal. First, this is an alkyd enamel that was developed for use as an insulator for electrical coils and armatures. It has a very high resistance to heat, and plays well with oil. It's also pretty viscous -- 60% solids by weight. ...

Related to this, I have been working on two M25s (not my own) and was surprised to see that Kubota painted the oil surfaces of the D-850 block with Glyptal too! Sadly it was not used to coat the interior of the valve cover or the oil pan.


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post #274 of 279 Old 10-09-2015
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Re: Perkins 4.108M DIY Rebuild -- A Narrative

Those are smooth steel (usually) and don't suffer the same cling effect that raw cast iron does - the whole purpose of the paint is to speed oil drainback to the pan. It goes a long way towards keeping the oil clean as well - just rub some oil on a piece of cast iron and see how quickly it blackens.

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post #275 of 279 Old 10-10-2015
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Hi a couple of questions. How long is the alternator turnbuckle modification and has anyone encountered excess wear on the return spring and the hole it goes through which is mounted on the tab on the timing cover from the fuel pump stop?
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post #276 of 279 Old 12-06-2016 Thread Starter
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Re: Perkins 4.108M DIY Rebuild -- A Narrative

Alrighty, then...

I guess I need to bring this thread to a close.

At the risk of posting a "tl/dr" entry, I'll try to be less verbose than usual.

So, when last we talked I had finished the rebuild and then put the engine in local storage awaiting a reunion with the boat.

The critical path for this to happen was:
1. Get the bilge prepped for new diesel tanks.
2. Get new tanks fabricated.
3. Install new tanks.
4. Get cabin sole and cabinets reinstalled.
5 Install engine.

I spent about six weeks up at the boat yard in the summer of 2015 working on step 1. I had mocked up the tanks with 1x2 lumber, and had to glass in several knees to support the new (a skosh smaller) tanks. Once I was satisfied that the mock ups were in fact going to do the trick, I headed home to FL in August 2015 to get the new tanks built. I had planned on a month for that to happen.

Yeah, about that... I finally got the call that the tanks were ready this past July. More on this later.

In the meantime, I got an email from the storage area that they had had a fire in our building, and that access would be suspended indefinitely. That concerned me a bit. I did a internet search and found some raw video footage of the firefighting response, and I got really worried. The fire looked worse than expected, and was pretty much directly under our second floor storage unit. I feared the worst.

After about six weeks I got the OK to come up and recover whatever I could. Upon arrival I found we'd had a lot of smoke and water in the unit, but no actual fire. The cardboard boxes were trashed, a couple of plastic totes were a little warped, but all in all we were OK. Even the settee cushions and the qtr berth mattress eventually came clean. Took the engine home and ran it again just to make sure all was still good to go.

Fast forward to July 2016. After picking up the new tanks, I got back to work on the boat. We splashed last week. Had to run home to FL to drop off the SUV and my trailer/workshop. Brought the crew back up, turned in the rental car, and began final prep for departure. I've run the engine several times since then, and other than having to replace the oil pressure gauge sending unit everything's copacetic.
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post #277 of 279 Old 12-06-2016
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Re: Perkins 4.108M DIY Rebuild -- A Narrative

I've been wondering about this! Glad you mostly dodged the bullet on that fire!

Tom K

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Ambition is a poor excuse for not having enough sense to be lazy ~ Steven Wright
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post #278 of 279 Old 12-07-2016
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Quote:
Originally Posted by CalebD View Post

Those of you who love(d) and owned British sports cars should enjoy this: Lucas - Prince of Darkness - Lucas Electrical Humor Jokes
Apologies if you have seen it before.

I once had an International Metro panel van that was powered by an Austin-Healey engine. There was only one parts store in St.Louis that carried parts for English made engines. After I replaced the voltage regulator, the coil and the alternator I became pretty familiar with that shop. One day when I was in the parts shop they had a stack of bumper stickers on the counter that said, "The British drink their beer warm because their refrigerators are made by Lucas Electric."
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post #279 of 279 Old 12-07-2016
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Re: Perkins 4.108M DIY Rebuild -- A Narrative

I am glad you're OK.
Pictures please...


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