Husqvarna 543xp chainsaw build. Needs more power.

[Allen Miller]

This is a good running saw just needs more power. Right now fell like a toy . I'm thinking of dropping cylinder raise compression to 180 psi also port cylinder and change port timing if need to . That were I'd like help . Also mufler mods. I want to build to use tried to trade off no body really wasn't interested so must not be a very popular saw. So anybody out there done any porting work on this saw would love to have your input. I'm not start on this project until I get some helpful information. Have a spare oem cylinder ordering a new piston rings. Stock husqvarna rings ok or should I check and see if caber makes rings for this saw. Thanks

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[1Pitbullman]

Jump up to a Real Chainsaw! Just kidding seriously, what are you doin with Saw? Soft wood , limbing, bucking oak or ? That’s the Real question when sizing a saw. I have a Husqvarna 55 bone stock , that fills many of my needs . I also started 30 plus years ago with a Grey top 61 Husqvarna. It is still running strong! Why I Am A Real Husky Fan!

 

[Allen Miller]

Jump up to a Real Chainsaw! Just kidding seriously, what are you doin with Saw? Soft wood , limbing, bucking oak or ? That’s the Real question when sizing a saw. I have a Husqvarna 55 bone stock , that fills many of my needs . I also started 30 plus years ago with a Grey top 61 Husqvarna. It is still running strong! Why I Am A Real Husky Fan!

Took this saw in on trade and i have a lot of chainsaw. Any from a 036 044 046 064 066 660 in the stihl line. The husqvarna 346xp 550xp and this turd of a saw I've tried to get rid of this saw for 2 years. My girlfriend won't even use this saw says it's a toy. I just fuqered I'm stuck with so time to do something with. I'm going to try something but don't know a lot about the xtorq cylinders . The way I see this if I don't improve it I'm not out of much.

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[1Pitbullman]

Took this saw in on trade and i have a lot of chainsaw. Any from a 036 044 046 064 066 660 in the stihl line. The husqvarna 346xp 550xp and this turd of a saw I've tried to get rid of this saw for 2 years. My girlfriend won't even use this saw says it's a toy. I just fuqered I'm stuck with so time to do something with. I'm going to try something but don't know a lot about the xtorq cylinders . The way I see this if I don't improve it I'm not out of much.

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I think that Bob, from Ashoken Turf and Timber said the 543 is actually made by Redmax! I don’t even know what that means... But it’s light, and maybe Great for a Entry level limbing Saw for working in tree or out of bucket on manlift. I Don’t think that anything will make a 40cc Saw anyway impressive!!! Porting and pop up piston is a lot of work for very little gain with that mini motor.

 

[Allen Miller]

I think that Bob, from Ashoken Turf and Timber said the 543 is actually made by Redmax! I don’t even know what that means... But it’s light, and maybe Great for a Entry level limbing Saw for working in tree or out of bucket on manlift. I Don’t think that anything will make a 40cc Saw anyway impressive!!! Porting and pop up piston is a lot of work for very little gain with that mini motor.

Ya I agree and it is made in Japan i have a lot of spare time at work so I'm going to experiment with it.

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[1Pitbullman]

Cool! Let me know how it turns out. I would only first do muffler mod. Gut the muffler and enlarge hole about 50% . Remove carb limiters and adjust to new flow. Then I would only widen and reshape Intake and exhaust ports 10-20% (so you don’t Ruin it) you can Always go bigger later. Sometimes The Shape has more efffect than Size. Go Too much , and it will be counterproductive! Ask me ho I know...

 

[1Pitbullman]

One more idea. Have you tried a non safety chain? You would Not Believe How Much DIFFERENCE A good chain makes. My wife had a Craftsman 36cc chainsaw, and the Homeowner Saftey chain was a Joke ! A Total Piece of Dung! Went to a chisel chain and made it a totally different animal!

 

[David Young]

Pull the base gasket. the muffler doesn't choke it down much. but you can increase flow some

the carb limiters are different you can not just cut the tabs. I don't know how you would bypass them you need a special tool to change the limiter settings.

 

[Allen Miller]

Pull the base gasket. the muffler doesn't choke it down much. but you can increase flow some

the carb limiters are different you can not just cut the tabs. I don't know how you would bypass them you need a special tool to change the limiter settings.

I bought a brand new oem cylinder off eBay for 30 bucks that should of been a sine there. After looking at it. I don't know we're it was casted at but they done a damn good job . In die cast thin wall small cored area's are hard to do. I've worked for 2 very large die cast factories and they couldn't of casted this jug with that quality . To me looks like there not a lot you can do or unless weld and build up under transfer plates. Don't know going to thank about this but there always ebay .

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[Nathan lassley]

Zenoah/redmax makes very good engines. Hope you tossed the safety chain because that makes a big difference. The hole on the muffler isn't very restrictive but it won't hurt to enlarge it a little. The cylinder design is similar to the older husqy xtorq pro model saws but is a full zenoah/redmax design based on the Original gz400 cylinder from the early 2000s. Like you stated this isn't a popular saw so I would look at what mods people have done to the gz400/ryobi ry10532, alot of people have the ryobi version because it was cheap at 120$ new in 07.

 

[mortalitool]

Bringing this thread back to life....did you end up dropping the cylinder and porting it?

I am in the process of porting one of these saws right now....

 

[Ketchup]

There excellent porting right ups on the Ryobi 10532. Pics, numbers, lots of details worth checking out.

 

[Jake Dykstra]

Figured I'd dig this up again. Anyone else port one of these little rippers? I did a base gasket delete and hogged out the holes pretty good. Also gutted the muff. Runs alright but needs more compression. Think I'll get a pop up and drop the jug some.