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

[blsnelling]

Let's see, if I start off at 50:1 , and change to 32:1 then I should have to retune idle and top end. that should show up on the fasttach.

I assume you'd want to retune back to the same idle and top end 50:1 was running. I'd be aiming for typical 2700-2800 and 13200 making sure it was 4 stroking.

I would agree with that. Then on the other hand, if one does make more power, perhaps it will need different tuning. I would be listening closely to see if the saw needed a different tune.

 

[Mastermind]

It's his attitude that gives me gas. Not his results.

 

[Mastermind]

hahha likewise!

Repped.

 

[Mastermind]

It will be interesting to see how the 660 does.

I really think the M-Tronic system has everything to do with the odd results of the first tests.

 

[bwalker]

For those of you that are totally pitching out the results due to testing variables, I challenge you to look back at his previous tests. The results are always consistent. Test after test, month after month. As to why these results don't agree with older tests, I don't know. I for one am anxious to see the results from the 660. Regardless, I will not run 50:1 in my ported saws. I run it for the protection, period. During testing with a ported 346 with 50:1, I nearly burnt it up. I caught it just as it started to scuff. Similar testing has never been an issue with 32:1. Add in reports from the likes of JJ of how more oil helps prevent crank failure, particularly in Huskies, and I simply won't take the chance with less oil.

Brad something else was wrong if you nearly burnt up a saw at 50:1 during testing?

 

[bwalker]

Probably so. They ask how many rpms we turned, compression, and for how long the cuts were . All thoso guys werent dumb by far

If they did they would have to ask.

 

[redbull660]

For those of you that are totally pitching out the results due to testing variables, I challenge you to look back at his previous tests. The results are always consistent. Test after test, month after month. As to why these results don't agree with older tests, I don't know. I for one am anxious to see the results from the 660. Regardless, I will not run 50:1 in my ported saws. I run it for the protection, period. During testing with a ported 346 with 50:1, I nearly burnt it up. I caught it just as it started to scuff. Similar testing has never been an issue with 32:1. Add in reports from the likes of JJ of how more oil helps prevent crank failure, particularly in Huskies, and I simply won't take the chance with less oil.

fully agree you'd need more oil in a ported saw. More compression = oil easier displaced = more oil needed to maintain same required lube factor.

 

[bwalker]

fully agree you'd need more oil in a ported saw. More compression = oil easier displaced = more oil needed to maintain same required lube factor.

Please explain your theory on compression displacing oil?

 

[STIHLTHEDEERE]

I can't believe how serious this site gets, about oil.....

 

[Mastermind]

I can't believe how serious this site gets, about oil.....

It's pretty important to the motor and stuff.

 

[Gypo Logger]

Right on! Another pissing match. Who's the trouble maker?

 

[KenJax Tree]

I guess it all comes down to whats important to you, stock or ported, and how you use it.

 

[KG441c]

did you even watch the video? you can do the times your self! yes I umm watched the videos 3 x each and screwed up the times by 7 seconds. LOL!

the wood! LOL then there is no point to this at all. That is why I did 1 cut each and also used two logs. So both logs showed the same results, yet it's not reliable. HAHAHHAAHHAHAHHAHA If the wood changed that much, we wouldn't even have cutting contests at all.

Your efforts r appreciated Redbull. I think a few cuts with the 660 may satisfy a few more here?

 

[Mastermind]

Right on! Another pissing match. Who's the trouble maker?

Who else?

Brad of course.

 

[Gypo Logger]

Who else?

Brad of course.

Figures, Consider him reported. Lol

 

[Mastermind]

What do you do for a living Mr. Redbull?

 

[Mastermind]

Figures, Consider him reported. Lol

I'm gonna take the open mod spot SS vacated. I'll ban everyone then.

 

[KG441c]

Suppose the Bel Ray @ 32:1 was the fastest then what would the argument be? Would the results then be more believable?

I know we all appreciate Redbulls efforts as I do. What should be considered here in the conversation would be several porters here commenting that have been inside many saws and what each oil we are discussing actually are doing to the insides

 

[bwalker]

compression is measured in PSI pressure per sq inch right? If there is more pressure exerted on the surfaces, then oil gets displaced or spread thinner? Thus the film would be thinner and you'd need a heavier oil mix to maintain the same lube?

Except that the parts holding oil aren't really exposed to this pressure unless your rings are not sealing...

 

[blsnelling]

Brad something else was wrong if you nearly burnt up a saw at 50:1 during testing?

Nope. I was testing for fastest cut times, pushing the envelope with the tune. Without the added protection of more oil, I almost overheated the piston. 32:1 gives me the protection to increase that buffer zone.