Saw video thread

[Keith Gandy]

Your porting saws now just like mine with the way I do transfers and the numbers I use,do they have tourqe or do you have to go easy on them?

Cant say as I havent cut with the 64/or 66 cylinder on mine yet. I know how the 64 ran before as its very memorable and I can for sure tell when I cut with the 85cc cylinder with the lowers modified whether the lowers will make it gain or lose

 

[Keith Gandy]

I like you, enjoy the 390. I believe you will never win this debate, your saw has cheap feeling plastic, does not handle well and lacks power according to others. Put my hands on a 661 today at local Stihl dealer today, nice saw, but will never own one. Just did not like the feel of that saw and have you ever noticed Stihl's, after one season of normal use look worse than a 10 year old Husky.

Your right but Jason and I talk in text alot and been hashing this 390/ 064 out awhile and its just a difference in porting style, chain setup, cutting styles. Thoso 661s r super smooth to operate though. I really like them and they r strong even stock with a 28 or 32 bar

 

[Keith Gandy]

A saw built for torque is not going to spin as high/hard as most.

Less duration ex/transfers with good- high comp is going to fill the cylinder better/more efficient at a lower rpm where torque is made, compared to the same saw with higher durations/larger ports.

That is why I think some saws can be leaned on harder than others.

I do believe a saw can be built strictly for clutch smoking torque. But that saw is not going to look impressive at all,expecially in a video.May even be slower than stock with the same bar/chain.

But you could stand on the saw through the cut.

Pretty pointless argument really. if you want a saw you can lean on, go rescue any 6 cube mac/homelite geardrive and lean till ya heart content.

But Ive ran and ported many saws with a happy medium. Carls 7900 for example had rpm and torque . Handled a 28 buried with fullcomp very well with great speed and lean on . We tried 28 404 fullcomp buried on it and my 440 hybrid and that was the tipping point for lean on with both thoso saws . They ran it but was an appparent drop off

 

[jmssaws]

Cant say as I havent cut with the 64/or 66 cylinder on mine yet. I know how the 64 ran before as its very memorable and I can for sure tell when I cut with the 85cc cylinder with the lowers modified whether the lowers will make it gain or lose

The lowers won't change it.
I widen the upper as far as it will go, I widen the lower to match the upper

 

[paragonbuilder]

The lowers won't change it.
I widen the upper as far as it will go, I widen the lower to match the upper

Am I missing something. If the lowers won't change it, why spend the time grinding.

 

[Brewz]

I like bacon!

 

[jmssaws]

Am I missing something. If the lowers won't change it, why spend the time grinding.

I only widen the lower to match the upper.
Stock the lower is wider than the upper but I widen the upper a bunch.

 

[paragonbuilder]

I only widen the lower to match the upper.
Stock the lower is wider than the upper but I widen the upper a bunch.

So if you do it, it must make a difference, no?

 

[Keith Gandy]

I only widen the lower to match the upper.
Stock the lower is wider than the upper but I widen the upper a bunch.

Jason can u please explain the theory on widening the upper and the direction u r achieving and the purpose of widening the lower to match it please?

 

[jmssaws]

Jason can u please explain the theory on widening the upper and the direction u r achieving and the purpose of widening the lower to match it please?

Improving flow is all I'm doing.
The tunnel is the choke spot so I make it all a straight shot till it turns to the intake.
The bigger they are the better they run when done right. You know when there big enough when you grind through.

 

[jmssaws]

404 8pin full comp,I don't know how to build a 066 with more tourqe than these have.

 

[RI Chevy]

That is impressive Jason. Very strong.

 

[paragonbuilder]

404 8pin full comp,I don't know how to build a 066 with more tourqe than these have.

Looks strong to me. This is porting them you new way? Same as the one you sent John?

 

[jmssaws]

Looks strong to me. This is porting them you new way? Same as the one you sent John?

It's not different but it's a better cylinder than his saw had.
A 066 will only run as good as the cylinder will let it.
Some you can't get the exhaust down far enough on,his saw is 98 or 99 on the exhaust and that one is 103 and the best stock cylinder I've ever seen.
If you start with a cylinder That's 98 stock instead of 95 you can get the exhaust lower and it will run better.

Every cylinder is different,it's not like a husky that has good timing and is consistent.

 

[jmssaws]

It's got new stihl rs full comp and a huge 8pin 404 sprocket.
8pin 404 is about the same size as a 9pin 3/8

 

[X 66 stang347 X]

404 8pin full comp,I don't know how to build a 066 with more tourqe than these have.

The specs on this saw would be good platform for the magnum badge stihl use to have when it meant something. I mentioned to Joel at stihl "he's the technical service specialist" that I wish they would come out with a real magnum saw again or a performance saw and he agreed but of course that's not in the works. But I'm sure it's the EPA that's keeping them from doing it and that's why it went away years ago. But in the next couple years we may see the EFI system that's on the TS500 come to the big pro saws.

 

[RI Chevy]

Mtronic is kind of like EFI, but not exactly. It us only a matter of time before they are all EFI saws.

 

[jmssaws]

Mtronic is kind of like EFI, but not exactly. It us only a matter of time before they are all EFI saws.

Mtronic is a wonderful thing and a 661 is on top of my need list.
@leadfarmer might have a hard time getting his back. Lol

 

[RI Chevy]

Lol. They do seem to respond to your touch very well.

 

[paragonbuilder]

Mtronic is a wonderful thing and a 661 is on top of my need list.
@leadfarmer might have a hard time getting his back. Lol

Any dice fitting it to an 066?