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

[cuttinties]

Seriously? All the Stihl Intellicarb compensates for is a dirty air filter. It has no bearing at all on this discussion.

Hold the phone. Maybe he knows something we don't.........still holding [emoji41]

 

[blsnelling]

checking tune with the belray h1r in 660

if it matters.... 28" bar n chain on. Usual tension and obviously didn't loosen the bar etc when changed gas. Oiler on max. Oil and gas topped off and filter clean.


This is my usual mix of stihl ultra 45:1




Dumped gas out completely. refilled with H1R 45:1. Ran the saw (let it sit on idle for about 5min and then did some WOT. Then topped off oil and gas/h1r 45:1 mix.

Did vid. I did not adjust anything at all. ie. H L or idle or anything else. So this is what it did JUST changing the gas from ultra to H1r.



if you can't see the numbers. Go to youtube and make the video larger.

So to me the idle on the belray seems more consistent and less erratic. And the top end looks about the same.


Maybe the H1R is higher purity ie more actual oil by volume (with out the solvents etc) so therefore you need less of it? I'm not seeing the tuning issue that many experience running H1R - ie. they complain they have to open the jets up a lot.

Very interesting. I would love to see you do the same thing with 32:1. How much run time was on the saw after switching fuels?

 

[blsnelling]

241 piston. Saw is about a year old and owner said probably close to 200 tanks. Said he bought 4 liters of Belray 10 months ago.

View attachment 418847

It would appear to me that saw runs pig rich to be that wet on the crown.

 

[CR500]

R50...thicker oil

Yes but H1R does have the character to run lean.... waiting on the Motul RR to arrive.

Nice thing about R50 is that I have a few gallons for thr sleds, so it is not goin to waste lol

Sent from my non internal combustion device.

 

[CR888]

40:1 H1R
View attachment 418864

View attachment 418865

Very typical after prelonged use of pure full synthetics, l would run a quality mineral base/semi synthetic to clean that up no biggie. But for this reason amoung others l mentioned in a previous post If running full synthetics every so often run a mineral oil to clean up the varnish build up caused by synthetics. lf one does not loss of throttle response and blow by is what follows down the road. These are some of the issues l tried to get out there earlier in this forum. Synthetics are good but not perfect at all. But understanding their characteristics may help users get better results and avoid problems.

 

[blsnelling]

A properly tuned saw would never have a wet crown like that.

 

[Andyshine77]

I agree the crown looked wet. We are also dealing with a strato engine, they run different. IMHO strato engines have wild temperature differentials do to the extra air moving through the system. Try tuning a strato engine real rich and see what happens.

 

[cuttinties]

 

[Mastermind]

First the 562xp beat the 262xp in Randy's test and now this with H1-R, how much heartache can AS take in one weekend?[emoji23]

I just thought the 562 won.

Seat of the pants.....

It was actually third.

The 359 was first.....262 second.....562 third.

 

[KG441c]

Take it for what it is.

Chemist.

P#1... I have tested 20 of the top oil's over the summer in my lab, Viscosity, load pressure under r.p.m., metal to metal friction test, oxygen reactivity test, 4 ball wear test, foam control under heat, carbon build up test, And how refined the oil is.

The R.P.M. Unit (machine) was built with a stainless steel piston that run's up to 16,000 r.p.m's, I add E-10 gas into the port hole and add the oil to a 50-1 mix and run it until the database software on the computer tells me at what r.p.m. the oil break's down, It also tells me the viscosity under load pressure, was there any foam under heat and how much carbon build up under heat. The unit gets to a 116 Fahrenheit. I have noticed that with ethanol the carbon build up is very low with all oils, because ethanol is a strong solvent, cleanser, and drying agent. A good synthetic when using E-10 gas is a must, now with Non-ethanol gas the oils will read about 100 to 150 RPM's higher.

tested: Klotz r-50 Techniplate, This oil is all synthetic, and has very small molecules, And it is a thick oil, Maximum R.P.M. before break down of the oil viscosity and film strength was 15,579, even though the oil broke down, my test unit stayed at 116f, weird, this is the first time my unit did this, pour point tested at -14f, this oil passed my test.

Glad I ordered r50!! Lol!! What about h1r and 800t? What did they look like Andre?

 

[KenJax Tree]

Klotz makes me nauseous after about 5 minutes the smell gets to me. It smells good at first and then it gets to me.

 

[KG441c]

Chris that guy with the h1r dirty piston needs to use alil Lucas to clean that mess up!!! Lol! I would put a wirewheel to it myself!!!

 

[Andyshine77]

Glad I ordered r50!! Lol!! What about h1r and 800t? What did they look like Andre?

The were not tested. I'm sure they would both do well.

 

[mdavlee]

A properly tuned saw would never have a wet crown like that.

Mtronic at its best. [emoji6]

 

[porsche965]

200 tanks and the 241c piston looks like this? Would Ultra look like this at 200 tanks?

Does any have a guess as to how many more tanks it would take before engine failure would occure?

 

[Pud]

Breaking news.... My 2012 yz450f with muffler mod and actual auto tune has carbon on top of the piston running straight premium unleaded for exactely 52 hours
Also note no pop up flat top or cut squish and still has very high compression

 

[KenJax Tree]

Chris that guy with the h1r dirty piston needs to use alil Lucas to clean that mess up!!! Lol! I would put a wirewheel to it myself!!!

Yup its good stuff....i feel bad going back to K2[emoji3]

 

[Andyshine77]

200 tanks and the 241c piston looks like this? Would Ultra look like this at 200 tanks?

Does any have a guess as to how many more tanks it would take before engine failure would occure?

Guess? sure that's what we've been doing for the most part anyway.

From the looks of it, I would say she'd last a good long while.

 

[Flatie]

If it's bare metal your either too rich or haven't ran very long.

12 tanks for this pic below

View attachment 416182

Over 5 gallons on this one below.





Disagreeing with multiple experienced members who are putting up pictures from around the country of many different saw innards is "normal" ......... BUT I don't think you or Bwalker have convinced anyone to make a change from the oils that have been pictured (H1R, 800, R50, Lucas, K2) ........... Mastermind, mdavlee, Trx250, and many others have posted pictures (many times) of what they find inside when they look in saws. M-Tronic and Autotune saws are included in some of them, so it aint "the tune" being rich that's causing us to put up such clean looking guts.

I humbly challenge you or Bwalker to show pics of actual work saws that were run with any of the oils that most of us are saying is great (H1R, 800, R50, K2, lucas) which support your position. It should be easy for you two to get the owners of those saws to verify the pics (like Maulhead and Randy did) so we can choke on our feet as we try to remove them from our mouths .................... until then, I can only go by the insides of my own saws and the pictures of those that I have learned to trust

This engine shouldn't be rich as they were run with autotune i believe, so you're saying with more run time there will be more carbon to see, yes?

Out of H1R or 800 2t which is your preference?
Also the off road or on road motul?

 

[KG441c]

200 tanks and the 241c piston looks like this? Would Ultra look like this at 200 tanks?

Does any have a guess as to how many more tanks it would take before engine failure would occure?

Maulhead posted a pic of his 661 with ultra after 12 tanks and it looked worse than that