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Author Topic: Squish  (Read 1157 times)

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Offline LeeB

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Squish
« on: March 23, 2018, 03:55:17 AM »
What is it, how is it measured, why is it important? I see it mentioned and have often wondered what it means but have never had the nerve to ask. Some of you fellas can be a bit brutal.  :D
'98 LT40HDD/Lombardini, Case 580L, Cat D4C, JD 3032 tractor, JD 5410 tractor, Husky 346, 372 and 562XP's. Stihl MS180 and MS361, 1998 and 2006 3/4 Ton 5.9 Cummins 4x4's, 1989 Dodge D100 w/ 318, and a 1966 Chevy C60 w/ dump bed.

Offline Weekend_Sawyer

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Re: Squish
« Reply #1 on: March 23, 2018, 07:10:06 AM »
I just looked in the FF dictionary, It's not in there.

Of course my first thought is that it is the unintended consequence of tree felling gone wrong.
Imagine, Me a Tree Farmer.
Jon, Appalachian American Wannabe. ... and it looks like my dream will come true!

Offline LeeB

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Re: Squish
« Reply #2 on: March 23, 2018, 07:30:34 AM »
I looked it up on google. Something I all to often forget to do before I ask. Apparently it's the gap between the top od the piston and the jug at TDC.
'98 LT40HDD/Lombardini, Case 580L, Cat D4C, JD 3032 tractor, JD 5410 tractor, Husky 346, 372 and 562XP's. Stihl MS180 and MS361, 1998 and 2006 3/4 Ton 5.9 Cummins 4x4's, 1989 Dodge D100 w/ 318, and a 1966 Chevy C60 w/ dump bed.

Offline starmac

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Re: Squish
« Reply #3 on: March 23, 2018, 07:37:43 AM »
Yep you use small soft soft solder through the plug hole and mike it to measure piston clearance, like using plastigage on a bearing.
Old LT40HD, old log truck, old MM forklift, and several huskies.

Offline WDH

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    • hamsleyhardwood.com
Re: Squish
« Reply #4 on: March 23, 2018, 07:51:58 AM »
I squished one with my tractor tire.  Did not require a special gauge or any other tools :)
Woodmizer LT40HDD35, John Deere 2155, Kubota M5640SU, Nyle L53 Dehumidification Kiln, and a passion for all things with leafs, twigs, and bark.  hamsleyhardwood.com

Offline mike_belben

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Re: Squish
« Reply #5 on: March 23, 2018, 08:42:32 AM »
 :D



Its the peripheral clearance between jug roof and piston top.  You want it as close as you can get without contact.  Its the number you need to work with for figuring out how much to lower your jug.
Revelation 3:20

Offline wild262

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Re: Squish
« Reply #6 on: March 23, 2018, 10:32:46 AM »
As a general rule, builders strive for 18-20 thousands.  This raises compression, in which enhances torque. 

Offline LeeB

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Re: Squish
« Reply #7 on: March 23, 2018, 10:45:38 AM »
I put a new p&c on my 346xp some time back. Didn't kow a thing about squish. It seems to run just as well as it ever did, 'cepting maybe when it was burnt up by somebody else. Should I even worry about checking it?
'98 LT40HDD/Lombardini, Case 580L, Cat D4C, JD 3032 tractor, JD 5410 tractor, Husky 346, 372 and 562XP's. Stihl MS180 and MS361, 1998 and 2006 3/4 Ton 5.9 Cummins 4x4's, 1989 Dodge D100 w/ 318, and a 1966 Chevy C60 w/ dump bed.

Offline barbender

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Re: Squish
« Reply #8 on: March 23, 2018, 11:02:13 AM »
I'm simple, if it runs good, I call it good👍😊
Too many irons in the fire

Offline wild262

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Re: Squish
« Reply #9 on: March 23, 2018, 11:09:46 AM »
I put a new p&c on my 346xp some time back. Didn't kow a thing about squish. It seems to run just as well as it ever did, 'cepting maybe when it was burnt up by somebody else. Should I even worry about checking it?

             Certainly no need to as long as its running good.   During a build I check it every time if I'm not using all OEM parts.  And even if I am, its a cheap insurance policy.   Takes very little time.  If your using AM parts, the squish band can be anything.  Mostly though on the wide side - 40-50 thousands and more.   Even to the point of the saw not starting at all with such low compression.   Very hard to go wrong if you stick with OEM.

Offline LeeB

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Re: Squish
« Reply #10 on: March 23, 2018, 11:42:04 AM »
It was all OEM. Bought from a member in the biz.
'98 LT40HDD/Lombardini, Case 580L, Cat D4C, JD 3032 tractor, JD 5410 tractor, Husky 346, 372 and 562XP's. Stihl MS180 and MS361, 1998 and 2006 3/4 Ton 5.9 Cummins 4x4's, 1989 Dodge D100 w/ 318, and a 1966 Chevy C60 w/ dump bed.


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