Perkins 4.108M DIY Rebuild -- A Narrative - Page 10 - SailNet Community
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post #91 of 268 Old 02-17-2013 Thread Starter
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Re: Perkins 4.108M DIY Rebuild -- A Narrative

Sorry, no pics today -- just not up to the whole upload, sort, and cross link kibuki dance tonite.

Got a lot done today, but not much of it was visually exciting.

I reinstalled the oil pump, then spent a bunch of hours at the drill press cleaning up a whole mess of nuts, bolts, spacers, brackets, etc.

I also started masking a bunch of those aluminum parts for an initial primer coat of zinc chromate. Hopefully, I'll be able to get the garage warm enough in the next couple of days to actually spray some paint.

As they say, tomorrow's another day


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post #92 of 268 Old 02-18-2013
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Re: Perkins 4.108M DIY Rebuild -- A Narrative

Does anyone here know why Perkins splits their con rod big ends on the bias like that instead of straight across like every other engine?

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 #93 of 268 Old 02-18-2013 Thread Starter
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Re: Perkins 4.108M DIY Rebuild -- A Narrative

Chapter 12: Killing Time

I figure I owe you a couple of pics of the oil pump reinstalled -- nothing special, just minor progress.





Now, for the killing time part. I'm regretting not doing a better job insulating the garage way back when I first purchased the house and finished the garage. Even with a space heater running, I'm not managing to get the temp up above 60* so I can get some primer sprayed.

So with a little time on my hands, I'm finding creative ways to keep myself busy.

Here's an example. The timing cover is made of stamped steel, and is attached to the block with studs & screws. Since it's made of stamped steel, it's got a fair amount of flex and to spread the pressure from the fasteners over a wider area of the cork gasket Perkins decided to use elongated washers. As you may recall, the timing cover had some serious rust issues around the edges, and many of these elongated washers were also pretty damaged.



Now I could have bought replacements, but what's the fun in that?

I bought some fender washers and fashioned my own that are even longer than the originals!





Here's another example. The connections for our water heater hoses are plumbed into the engine head. They were custom fabricated, although they were pretty rough. Once I got the paint off of them, I noticed that they were stainless. I started cleaning up the welds with a couple of files, all the while contemplating how best to get paint to adhere. Then I thought "why paint stainless?" You may know where this is headed...

After smoothing out the welds a little, I then took the MultiMaster to them with 150, 180, and 240 grit. Pulled out the bench grinder and chucked up a buffing wheel. Voila! Engine bling!





Hopefully tomorrow will get a little warmer...


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post #94 of 268 Old 02-18-2013
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Re: Perkins 4.108M DIY Rebuild -- A Narrative

Nice job "wasting" time!

Looking at those elongated washers trying to spread the load on the leaky gasket gets me thinking, "why not drill and tap in some more bolts and washers?"

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post #95 of 268 Old 02-19-2013
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Re: Perkins 4.108M DIY Rebuild -- A Narrative

Por,

I feel your pain. We had double insulation and sheetrock installed in our full basement garage. The workshop seldom gets warmer than 40 degrees Fahrenheit from November to May. Takes a while for glue to dry and even lacquer takes a while.

Enjoy your pictures and narratives.

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Re: Perkins 4.108M DIY Rebuild -- A Narrative

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Por,

I feel your pain. We had double insulation and sheetrock installed in our full basement garage. The workshop seldom gets warmer than 40 degrees Fahrenheit from November to May. Takes a while for glue to dry and even lacquer takes a while.

Enjoy your pictures and narratives.

Paul T
This problem has a solution.... 28,000BTU


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Re: Perkins 4.108M DIY Rebuild -- A Narrative

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This problem has a solution

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I thought of that but was somewhat concerned about killing myself

I use a small ceramic electric heater on my legs, works fairly well, I can work for about an hour or so, then it is time to come upstairs to warm up.

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post #98 of 268 Old 02-19-2013 Thread Starter
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Re: Perkins 4.108M DIY Rebuild -- A Narrative

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This problem has a solution.... 28,000BTU


MedSailor
That may just work too well -- solvent vapors and a propane heater are usually a risky combo


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Re: Perkins 4.108M DIY Rebuild -- A Narrative

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That may just work too well -- solvent vapors and a propane heater are usually a risky combo
Wus!

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Re: Perkins 4.108M DIY Rebuild -- A Narrative

Occurs to me, now, Porf, that one of your major expenses will be the acrylic engine box so you can continually admire the result of all this work!

Ron

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