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  #41  
Old 10-15-2019, 04:39 PM
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Please explain the reasoning behind that.
I would think thicker oil would be good for less clearance so it doesn't run off as quickly.
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  #42  
Old 10-15-2019, 04:58 PM
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My reasoning is that a thicker oil might not flow into the bearing surface as well as a thinner weight oil. Given tight clearance.

I could very well be wrong. Experiment.

If it was mine and the clearance was actually .0015". I would polish the crankshaft, or hone the rod or both.
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Old 10-15-2019, 04:59 PM
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Would a standard spring loaded hone work to hone the rod? As long as it fits in the bore of course. Right?
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Old 10-15-2019, 05:10 PM
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Maybe. I'd use a ball hone designed for it.

Either way you can ruin your rod. The incorrect abrasive used on aluminum can permanently embed particles.

And either can lead to an out of round rod or bellmouth shape.

https://www.ezbore.net/Flex-Hone-Cra...xce10320ao.htm

https://arcracing.blogspot.com/2000/...it-is.html?m=1

Last edited by Randy H; 10-15-2019 at 05:58 PM. Reason: made changes, added link changed link added another link
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  #45  
Old 10-15-2019, 05:38 PM
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I would think another possible solution would be to apply fine lapping compound to the journal, tighten it down, and rotate it a bunch to get a little more clearance.
Thoughts?
If that 0.0015 measurement was accurate(which I will verify tomorrow once the crank is removed), I should be good, but I'll make sure to use slightly thinner oil.
THAT GUY IN THE SECOND LINK SEEMED TO BE YELLING A LOT!
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Old 10-15-2019, 06:18 PM
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That would increase clearance.

I might give that a try. But I've got a big pile of parts, with not much money invested.
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Old 10-15-2019, 06:22 PM
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Yeah I've found my parts pile to be steadily growing.
Ah well, it's part of the addiction.
If the clearance is unacceptable(doubt it), I'll probably buy a 555207 off of ya.
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Old 10-15-2019, 06:30 PM
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Hopefully it's good.

Of course at governed RPM good and tight is just ducky. Start increasing the RPM and the potential for heat buildup and the rod seizing on the crankshaft becomes more likely.
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  #49  
Old 10-16-2019, 06:53 AM
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Oh yeah, I checked the governor arm throw, or "floppage".
Here's what I found:

Even at the points where the exterior governor arm hits the block, the interior governor arm does not touch anything.
So if someone else wants to know, it's perfectly acceptable to remove just the governor gear and reuse the factory throttle linkage.
Especially with the normal amount of throw the arm has.
PLEASE NOTE: this ONLY applies to the sidecover interior mounted governor gears!

---------- Post added at 07:53 AM ---------- Previous post was at 07:20 AM ----------

Well, I went and bit the bullet.
I bought a 19244 starter clutch wrench. Mainly because I don't want to risk under torquing the clutch, as this engine will be spinning in excess of 5K sometimes.
That, and I don't want to damage it.
So I went ahead and got one day shipping($13 ).
So today I'll just relax and tidy up the insanely messy workbench, and tomorrow or the day after that, I'll remove the flywheel so I can remove the crank and camshaft, to get accurate oil clearance readings.
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  #50  
Old 10-17-2019, 05:49 PM
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Hmmm, interesting.
https://www.ebay.com/itm/Briggs-Stra...f196b2202c2a72

It says the part number is 299430(the OEM replacement for my engine), but the pic shows a Raptor II/III rod. *shrug*
Whether they've got the number wrong, or the pics wrong.

Also, I found out that my stock rod has the good black oil dipper, so yay! I'm just gonna keep it for parts, unless I can sell it for a reasonable price on Ebay.
Starter clutch wrench came in, so I can remove the crankshaft tomorrow, and tonight I'm gonna pick up some 400 grit sandpaper to clean up some scoring in the cylinder.
Things are chuggin' along!
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Old 10-18-2019, 05:53 AM
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Genuine Briggs & Stratton made in China, I've seen the same part made in Italy.

https://shop.briggsandstratton.com/p...connecting-rod
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  #52  
Old 10-18-2019, 05:58 AM
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Hissss!! Don't want made in China!
If there's ever a time when I can't acquire an official Raptor rod, this would be better than the stock bolt on dipper rod.
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