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Dolmar 64xx/73xx/79xx series, smurfs and solo 665/675/681 thread

PA Dan

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It’s still in the box in my room. Probably won’t use it till cold weather starts, it’s my dedicated winter saw. I might just keep this one stock to have one quiet and friendly saw that is good on fuel. Lol
Yeah right...[emoji28][emoji1787][emoji23]
 

Lightning Performance

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Any of you mill with the NPW 54mm top on a smurf ? Started life as a 6401 HD tool rental victim that survived. The piston is my one ring worry. The jug is still box stock.
 

mdavlee

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One ring has never concerned me while milling. I used a stock 7300 and stock/ported 7900 with 32” of bar and never had an issue with over heating or anything. Some was summer time in TN. I did have a 395 diesel for a few moments after a cut and the ignition off.
 

huskyboy

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One ring has never concerned me while milling. I used a stock 7300 and stock/ported 7900 with 32” of bar and never had an issue with over heating or anything. Some was summer time in TN. I did have a 395 diesel for a few moments after a cut and the ignition off.
Was the 395 ported? Too much compression/timing advance seems like a bad idea with a big saw working on a mill.
 
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huskyboy

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The 64/73/79xx I wouldn’t be afraid to mill a slab with a reasonable sized bar if the compression/ign. timing wasn’t increased significantly over stock. They seem very thermally efficient compared to other saws in general. They don’t lean out as much in long cuts. The cylinder cooling fin surface area seems small at a glance compared to some saws. They were able to do this to save weight because the massive flywheel moves a lot of air and shrouded ductwork aims the airflow right at the cylinder. Most saws don’t have this ductwork or as big of a flywheel.
 
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huskyboy

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I don't think they had a choice regarding the CAT muffler. None of the saw makers...
Nope they didn’t have a choice, either get rid of it or come up with a solution like cat mufflers and SLR mufflers. At least it kept around a good series of saws for a while.
 

huskyboy

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Popped the cherry on the new ea7300. First impression is that it’s more impressive than my 7900 was when it was bone stock from what I remember. Very torquey. B69A744B-072F-4D99-9A5E-4F6180F0C156.jpeg
 

huskyboy

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Popped the cherry on the new ea7300. First impression is that it’s more impressive than my 7900 was when it was bone stock from what I remember. Very torquey. View attachment 195871
I will also mention the saw did not come out of the box set lean like some other brands I’ve seen. It was slightly rich. Which is good for the average person who wouldn’t touch the screws, as it will lean out with break in/run in time.
 
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