661 Oil Test 32:1 vs 40:1 vs 50:1 ?

[Ron660]

BTW the 661 is rev limited I believe, so that 13,600 figure is meaningless as a measure of tuning.

Plus it's a quad port?

 

[bwalker]

And Ron660, I'm not trying to give you a hard time, just trying to faster some thought by you on this subject.

 

[bwalker]

Plus it's a quad port?

Doesn't it have a 1 into 4 port layout? Where the transfer port intakes are on the intake side of the jug?

 

[bwalker]

Yep.

Although to be fair, idling before shutdown can make a plug look like that.
Plug reading is of much less value than most think as it pertains to tuning.

 

[Ron660]

And Ron660, I'm not trying to give you a hard time, just trying to faster some thought by you on this subject.

No problem. I'm learning and appreciate knowledgeable facts.

 

[Ron660]

Although to be fair, idling before shutdown can make a plug look like that.
Plug reading is of much less value than most think as it pertains to tuning.

I always let it idle for a few minutes before turning it off......thinking it will assist in cooling.

 

[Ron660]

You don't have a 661 though...

But I just got this one in. First Husky.

 

[KG441c]

View attachment 465959
But I just got this one in. First Husky.

Oh ya baby!! Your life is about to change now!!

 

[Ron660]

Oh ya baby!! Your life is about to change now!!

For the worse? Lol

 

[KenJax Tree]

For the worse? Lol

You be the judge[emoji6]

 

[bwalker]

I always let it idle for a few minutes before turning it off......thinking it will assist in cooling.

This isn't a bad idea if only for preventing corrosion, which IMO you must be more aware of when using ester oils.

 

[bwalker]

View attachment 465959
But I just got this one in. First Husky.

Never played with the xtorque version but the older version was about a perfect falling saw.

 

[KG441c]

You be the judge[emoji6]

Lol! He will realize whats happened after he pins the hammer on it!!lol!!

 

[KG441c]

For the worse? Lol

U will see

 

[Ron660]

Never played with the xtorque version but the older version was about a perfect falling saw.

I decided to go with a 372 for a lighter firewood saw as opposed to my 660. I'll keep the 660 around for really big stuff. I have a Husky 20" techlite .058 bar I'll try on the 372. I'm considering a 24"cannon light for it when they're available.

 

[Moparmyway]

Someone told me you fellas need somtin about 661 and 066 .............. both of mine be worked

I will say that opening the exhaust more on my ported 066 caused the tune to get up higher in the wood for max power.
WOT unloaded is pig fat burbling rich, she cleans up with 1/3 of the bar cutting (36" .404) .......... and was making the most RPM's in the cut tuned to 13,200-13,300 ............................ but now with a toilet flange for exhaust outlet, she is holding higher RPM in the cut tuned at 13,800.

I do need more time to dial her in, but I believe that a saw should be tuned in the cut for max RPM (while cutting), so long as you 4 stroke out of the wood, I dont care how much she burbles WOT unloaded, I only care about max power in the cut

 

[bwalker]

I decided to go with a 372 for a lighter firewood saw as opposed to my 660. I'll keep the 660 around for really big stuff. I have a Husky 20" techlite .058 bar I'll try on the 372. I'm considering a 24"cannon light for it when they're available.

A 20" bar and a 372 are like peas and carrots.

 

[porsche965]

My 661s run on the fast tach 13,200 +-

Sending the new 390XPW out for porting.
Limiter holds that dog to 12,700. That will change for sure.

 

[Moparmyway]

My 661s run on the fast tach 13,200 +-

Sending the new 390XPW out for porting.
Limiter holds that dog to 12,700. That will change for sure.

Mine hits 14,000 but hangs around the 13,600 mark .................Hardline is hardwired

She pulls like an ape in the cut

 

[porsche965]

The XTORQ being ported will still four stroke alot at 14,200. Wearing a 25" bar is a strong 70cc blocking saw.