duramax99
ArboristSite Operative
Limited coils don't effect the rpm in the cut......they just make tuning a bit easier.
390xp carnage
- Thread starter duramax99
- Start date
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SkippyKtm
The Lorax, my FIL rip...
No, limited coils don't effect the rpm in the cut, but they sure do help when the operator decides to not let off the throttle when limbing.
I find limited coils to make tuning a bit harder, ya gotta tune the H side real fat and then gradually lean it out either that, or tune the high side while you're in the cut...
Icedogs28
ArboristSite Operative
its bad enough you have to deal with throwing rods in your duramax, and now your chainsaw too! :hmm3grin2orange:
husky01
ArboristSite Operative
3 weeks ago my 385 done the same thing, I never got pics of it but it's at the husky shop now getting completely rebuilt. I did buy it ex bush and nothing ever seemed wrong with it. My wallet will seem kinda empty now:msp_mellow:
04titanse
ArboristSite Operative
Oh man...some one is a ford fan huh? Duramaxs almost never throw rods, only pop head gaskets in llys when over 500hp and crack pistons in lbz's over 650hp. My dmax has been over 530hp for 80,000 miles, no issues.
Just had to say something haha....couldn't help my self lol.
Pioneer fan
ArboristSite Operative
Off Topic: Anytime a Ford fanboy talks trash about a Duramax, or Cummins, Just remind them of the 6.0 and 6.4 powerstroke. That usually shuts them right up.....lol
On Topic: I wonder if that kind of damage could be from the piston" tightening up" in the bore, on it's way to a seizure.....and the rod give up first
A brake like that can be caused by a
wrist pin or lower rod becoming to tight
or siezing.
Lee
wrist pin or lower rod becoming to tight
or siezing.
Lee
I've seen a couple like that. Unlimited coils and limbing did it. I won't tune a 390 over 13.5k any more. That first break is pretty bad. Never seen one like that. I hope I don't any time soon.
BloodOnTheIce
Addicted to ArboristSite
Saw a break like that recently
duramax99
ArboristSite Operative
Piston and cyl look mint no scoring no funny marks nothing. Thats why i posted this, seen alot of 385/390 bottom end failures just never a broken rod where the piston and cyl survived almost perfectly.
Ouch...that wasn't cheap!!! 3120 stroker alky saw?
BloodOnTheIce
Addicted to ArboristSite
Yeah the 084 rods they use are tough, but can only take so many RPMS before they go snap.
Luckily it wasn't my saw. You're looking at 1,000$ by the time the saw gets a new stroked crank and race piston.
SawTroll
Information Collector
I would say a bit harder - but not a big deal anyway....
M
moody
Guest
I pooped a little when I saw those pictures. Anyone call for a dismount ball check ?:check:
duramax99
ArboristSite Operative
How does a non limited coil making tuning harder? Cant confuse bouncing off the rev limiter with four stroking....
Mastermind
Work Saw Specialist
A non limited coil makes tuning easier...........you've mis-read someones post or something......
duramax99
ArboristSite Operative
I successfully managed to mistype my own post on coils. I meant to say non limited coils make tuning easier because you cant mistake four stroking with the rev limiter. Kinda forgot one important word haha
