Mastermind Meets the 562XP

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chopperfreak2k1

chopperfreak2k1

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So, Randy, why don't you do quality work like this?

New Hot Rod Ported Polished Husqvarna 562XP Chainsaw Dirty Saw | eBay


:hmm3grin2orange:

I just don't have the skills my friend. Or a good horseshoe rasp. :laugh:

i know, i'm a rookie and i'm always wrong, but i thought that polished exhaust port looked good, no?


i go away for like 34 hours and now Randy is turning squish bands, and portin a 261? **** moves too fast around here.

i felt that the 562 got better than a 40% gain.

so my best friend visited us for the weekend and i ask him if he's heard about the 562.

he stared at me...

i tell him really it's a screamer.

his response? "do you need a tampon"?
 
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Mastermind

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i know, i'm a rookie and i'm always wrong, but i thought that polished exhaust port looked good, no?


i go away for like 34 hours and now Randy is turning squish bands, and portin a 261? **** moves too fast around here.

i felt that the 562 got better than a 40% gain.

so my best friend visited us for the weekend and i ask him if he's heard about the 562.

he stared at me...

i tell him really it's a screamer.

his response? "do you need a tampon"?

Those porting pictures aren't even of a 562xp. Those are the same pictures he has in another BIN for a 346xp. The base is what looks rough, it's scratched up badly and in some spots there is no material removed. I doubt the cylinder base is true after what was done.

He shows a 562xp as it's being disassembled, but I saw no mods to any part of that saw.
 
bryanr2

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Your 044 Steven.

attachment.php

For those interested in how this boat anchor(wink) turned out..... not to bad for an "old relic".
mastermind7864's Channel - YouTube

I Swear Randy, ever saw you build me is better than the last. Hell, I think it's gonna take me more time to make up my mind about which one to use, than to actually use it on the intended job. Another damn fine job. And thanks for the pipe'd muffler mod.

steven
 
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jthusky55

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If you've ever seen a well-worn 576, you'll see how ugly the silver clutch cover becomes after it's got scratches and dings.
I'm waiting for MWeba to figure out how to make the 555 have the power of the 562 and then I'll go for one of those...

That's an easy one, the only difference in the 2 cylinders is the port covers on the side of the cylinder, just like the 365 and 372 xtorq. They both have the same part#s stamped on the cylinder. The other difference is the carbs have a different program in them. If you have both saws it is evident that the port covers on the 562 are quite a bit bigger.
 
walexa07

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That's an easy one, the only difference in the 2 cylinders is the port covers on the side of the cylinder, just like the 365 and 372 xtorq. They both have the same part#s stamped on the cylinder. The other difference is the carbs have a different program in them. If you have both saws it is evident that the port covers on the 562 are quite a bit bigger.

Must know more!

Are the coils different too? Thanks.

Waylan
 

TK

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The difference in cost vs. parts and time needed to get these saws to be the same just plain aren't worth it. UNLESS you are that much in love with the small mount bar. It is definitely not like the 365/372 situation.
 
spike60

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Spike60 or TK are the ones to ask these questions to.

I do believe the 562 was stopped for a while because of a coil/carb issue. Those saws need both the carb and coil replaced as a unit......they are not interchangeable.

555 and 562 use different coils. 555 doesn't have revboost, and of course the 562 does. (as does the upcoming 550XP) The way this carb deal is going to work is that several models will share a common carb. When installed in a particular saw, it must be programed for the model you are installing it in. This requires the "we don't have it yet" $400 diagnostic tool. Once in, the carb should have no trouble "auto-tuning" for some of the mods that you guys are doing. But the carb must have a starting point as in knowing what saw, (and displacement), it is in.

Matching the carb and coil is something that pertains to the 365XT/372XT. There was a change last year, (about week 21 I think), where both the coil and carb were updated. Supposedly these items cannot be mixed with the earlier parts. IE: old coil must mate with old carb; new coil with new carb. The carb was re-calibrated for smoother idling, and the coil is now a digital unit.

Like TK said, turning a 555 into a 562 is not a simple trick as with the 356/372. It's far easier to simply buy the 562 from the get-go.
 
MechanicMatt

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So can you flash tune the carb to make it think its feeding a bigger saw? In the automotive world Im reflashing modules all week long. GM make some great crap it tell ya, Is there software RE-programable or is it burnt once and then done? Can you get that tool if your not a dealer???
 
Bowtie

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So can you flash tune the carb to make it think its feeding a bigger saw? In the automotive world Im reflashing modules all week long. GM make some great crap it tell ya, Is there software RE-programable or is it burnt once and then done? Can you get that tool if your not a dealer???

I knew there was a reason I started buying older style saws again.

Same reason I drive a carburated Vortec 350 in my 4x4!

I roll old school!
 

TK

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So can you flash tune the carb to make it think its feeding a bigger saw? In the automotive world Im reflashing modules all week long. GM make some great crap it tell ya, Is there software RE-programable or is it burnt once and then done? Can you get that tool if your not a dealer???

No, there is no custom tuning. No maps. No open ended software. "x" saw has "y" carb, click, program, then ya still gotta run it to let the autotune adjust itself.

And you don't want to tell it to run 562 settings persay on a 555 or 550, as the timing as fuel requirements are completely different. Let the autotune do it's own thing.

There is no need to alter any settings. It's pointless. It's a learning computer. It will tell you you're wrong, it knows what to do, and it will do it. Inputting incorrect information could further lead to damaging the saw as it may not be able to calibrate correctly due to incorrect parameters, or take too long to correct from input that is too far off from what you need.

***Another thing is this - why would you want to manually set a carburetor that is set up for automatic adjustments?? It makes no sense. Buy a saw without AutoTune if you want that..... And with the reports of these computer carbs saws running smoother, better, more powerful than their non-Autotune counterparts, why would you want to even compete with that? One less thing to have to do, adjust a carb. AWESOME!!!!

And sorry, to answer your second to last question there, yes you can reprogram it. You can take the AutoTune unit off one saw and install it on another saw (i.e. from 562 to 555) and reprogram it for the different saw. When you replace the carburetor on these saws, you are replacing just that, the AutoTune unit gets reused unless there is a fault.
 
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Mastermind

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No, there is no custom tuning. No maps. No open ended software. "x" saw has "y" carb, click, program, then ya still gotta run it to let the autotune adjust itself.

And you don't want to tell it to run 562 settings persay on a 555 or 550, as the timing as fuel requirements are completely different. Let the autotune do it's own thing.

There is no need to alter any settings. It's pointless. It's a learning computer. It will tell you you're wrong, it knows what to do, and it will do it. Inputting incorrect information could further lead to damaging the saw as it may not be able to calibrate correctly due to incorrect parameters, or take too long to correct from input that is too far off from what you need.


And a saw modder's dream come true. The 562xp responded to a compression increase, altered port timing numbers, and an unbaffled exhaust as good or better than any saw I've built.
 

TK

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And a saw modder's dream come true. The 562xp responded to a compression increase, altered port timing numbers, and an unbaffled exhaust as good or better than any saw I've built.

It sure beats playing around with settings and getting it right for where you are, then sending a saw to someone just to have them start tweaking with it and have it blow up. Like you mentioned, it can seem a little hairy at first, but so can't manual tuning!
 
Bowtie

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It sure beats playing around with settings and getting it right for where you are, then sending a saw to someone just to have them start tweaking with it and have it blow up. Like you mentioned, it can seem a little hairy at first, but so can't manual tuning!

Good point. It's not that I dont trust new technology, I just dont trust new technology! Once it proves itself I think it is a great idea.

Hell most people around here cant tune their chainsaws anyway.
 
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