Author Topic: Deck Height Difference in XT Cases Versus XP Cases  (Read 836 times)

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Offline KilliansRedLeo

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Sharkey, yes I have a small bottom bearing spiral bit used to do inlay work on furniture that will cut up to 1/8 inch soft non-ferrous metal, like brass, copper or aluminum. You can get it from www.woodcraft.com or www.rockler.com. Got to get the one with the eight inch spindle so you can use it in your Dremel.
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Offline weimedog

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There is some manufacturing tolerances between individual pairs of XP cases (don't have any XT cases to try). Same cylinder, same piston, same gaskets, first pair of XP cases, squish measured 0.0112. Substituted another pair of XP cases all else remained the same, squish measured 0.0153. In both cases cylinder was mounted and torqued to factory specs 10NM. Substituted a stack of gaskets from Northwoods saw squish now measures 0.025-0.028. Good enough to put the saw together and see what it does!

And???

Have "critical" mass to build a compete build with the meteor 064 piston & Huztl (Looks like hyway =Jinhua FarmerTech too BTW) Got a Huztl handle today, its much upgraded from the prior one! Has the right AV spring and the throttle cable is upgraded. Better looking plastic too. Hope to build it next rainy day this coming week.

Plan to use 365 cases, plastic & intake. A 3/4 tube muffler mod. Tweak the intake timing about 2 degrees...assuming the Cylinder is the same as the last. Bring it from 76 to 78 (about .030 including the correction for the .010 longer Stihl 046 piston skirt. Also its getting s X-torq carb & Huztl "black" ignition. Should be fun.

HOPING to get my stock 365 back from a friend to build it with an OEM BB along with the same Muffler mod & intake mods. Real curios to see how that runs relative to the Jinhua / Stihl blend

Offline KilliansRedLeo

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Quote
And???

Well the second set of 372 cases had a slightly higher deck height, using three gaskets I am right at 0.024 (0.023 left 0.025 right). The 272XP piston works fine with no modifications. New bearings and seals in the case, all buttoned up ready for pressure/vac test today. Have both the stock 12B and XT intake, going to start with the 12B and use the low filter and top because it is what I have. Have several mufflers already done with 0.800 ID pipe. Best you can do on the muffler mods is 7th pulse third would be better but due to the interior dimensions of the muffler 7 is the best you can do. If you reduce the depth of the muffler be 0.500 you might get to fourth order harmonic but who knows. My bet is that the 0.800 pipe is a waste but will try it and see. Guess is that 0.374-0.500 will be better.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
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Offline weimedog

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I'll call in a bit, winding through a bunch of stuff today. Interesting that the Huztl / Jinhua FarmerTech Muffler comes with no baffles and a .5in dia And for 13 bucks delivered..... its a great place to start. How do you figure opening size?

Offline weimedog

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Bob (Spike 60 ) is coming up tomorrow to help with the logging work. It's a 3.25 hr drive for him! We might do some video time. I got that "Fugly 350" running a bit better. Changed out the carburetor flange, rubber "boot" inside all the intake manifold & stuff. And put a new "steel clamp" on it as well. Didn't finish the cylinder yet but it running really strong right as it is making me reluctant to fix what's not really broken, BUT wanting to complete the experiment. I sort of talked it down on the video...mainly to tease Bob as it will eat up any 350 variant I've run to this point in time. He has a 346xp top end on a Jonsered 2150 that's a favorite work saw when he comes up to break down tops. My goal is/was to have the Chinese fugly 350 match that saw. Pretty certain I accomplished that goal without going any further. I've put two days of work time on the saw dropping & topping trees, and it's a solid build...

Offline KilliansRedLeo

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Walter, are you going to use the Stihl 046 piston? Was that a typo because the 046 is only 39.5mm tall, it is the 064 is 43mm tall.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

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Offline weimedog

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typo...:)

Offline Cut4fun .

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Re: Deck Height Difference in XT Cases Versus XP Cases
« Reply #27 on: November 06, 2017, 08:18:39 am »
Re reading some XT XP OE NE info. TTT for those that never noticed
REDNECK Saw Repair Getter Done

 

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