Woods ported my 660.

[Absolution]

I didn't touch carb saw pegged 13k. Still 4 stroking I'm going to turn in back to 12,500. I'll also try and do a video later.

 

[Absolution]

Don't change your carb settings until you you get it running and that should tell you if it is doing anything different at idle and full throttle.

LOL was just typing that in.

 

[MG porting]

Your losing case compression, but that should reduce spitback a little. You could freeport the exhaust a touch or fill the intake to 78 or so and that may reduce it a little. You could also lean it out a touch. Should be at least over 13,000

That's what I was thinking to I think it's going to be close to 13,000 after he's finished without changing his carb settings as they are now.

 

[Absolution]

T

Your losing case compression, but that should reduce spitback a little. You could freeport the exhaust a touch or fill the intake to 78 or so and that may reduce it a little. You could also lean it out a touch. Should be at least over 13,000

Golf balls fly further do to a air barrier. Great for golf balls bad for intakes. If you dimple the inside of a pipe when fluid or air goes over the dimples the amount of air/fluid that can pass through is decreased. But since I've hogged out those ports I can sacrafice that.

Other part is it does slow down due to turbulence at lower speeds. But that turbulace will help fuel stay atomized.

This is my 4 stroke knowledge. Dimples sucks for intakes usually. However I think this one instance it might help it.

 

[MG porting]

I didn't touch carb saw pegged 13k. Still 4 stroking I'm going to turn in back to 12,500. I'll also try and do a video later.

Do a vid of it set at 12,500 and 13,000 in the cut it should be fine at 13,000 if you're not running you mix at 50:1. Oh good I can't believe I just said that.lol

 

[Absolution]

Do a vid of it set at 12,500 and 13,000 in the cut it should be fine at 13,000 if you're not running you mix at 50:1. Oh good I can't believe I just said that.lol

Nope 32:1 husqvarna oil. Since I switched to it the two stroke equipment seems to be doing better and running cleaner

 

[Absolution]

Had to split the video's I got a phone call between them. EDIT: I'm trying to let the weight of the carry through theses cut's in order to try and keep consistent.

13k

12k

 

[MG porting]

Had to split the video's I got a phone call between them. EDIT: I'm trying to let the weight of the carry through theses cut's in order to try and keep consistent.

13k

12k

Sounds pretty good. Good job.

 

[Deets066]

T


Golf balls fly further do to a air barrier. Great for golf balls bad for intakes. If you dimple the inside of a pipe when fluid or air goes over the dimples the amount of air/fluid that can pass through is decreased. But since I've hogged out those ports I can sacrafice that.

Other part is it does slow down due to turbulence at lower speeds. But that turbulace will help fuel stay atomized.

This is my 4 stroke knowledge. Dimples sucks for intakes usually. However I think this one instance it might help it.

Dimples supposedly help in intakes, some OEM boots have dimples. I didn’t open the pics at first, it just looked like you made the lowers even bigger.

 

[Absolution]

I went out to gather the cookies for my smoker. I went ahead and threw one of my hand files on. Definitely not a race chain but better than a factory grind. I also have a ATOP jig. I'm not particularly fond of it but I may do a chain up this weekend to try again.
\

 

[MG porting]

I went out to gather the cookies for my smoker. I went ahead and threw one of my hand files on. Definitely not a race chain but better than a factory grind. I also have a ATOP jig. I'm not particularly fond of it but I may do a chain up this weekend to try again.
\

View attachment 188252

Sharp chain always makes a big difference.lol was the saw set at 13,000 or 12,500?

 

[MG porting]

Dimples supposedly help in intakes, some OEM boots have dimples. I didn’t open the pics at first, it just looked like you made the lowers even bigger.

He covered the hole lower transfers with dimple's.

 

[Absolution]

He covered the hole lower transfers with dimple's.

Yeah, thought about intake. But would have been pia. Maybe I'll do it another day.
Also the idle jumped to 2800ish from 2300. So I turned it back down, frankly I was expecting total failure.

So haven't thought far ahead of this yet only a concept. It would require another cylinder but has anyone move a transfer near and exhaust and treated it like a air blade? I feel like it would be very timing orientated as not to loose too much pressure in crank.

 

[Absolution]

So I started looking at this wood. The "rot" isn't the same all the way down. It's getting harder. So I'm kinda annoyed the times may be skewed.

 

[MG porting]

Yeah, thought about intake. But would have been pia. Maybe I'll do it another day.
Also the idle jumped to 2800ish from 2300. So I turned it back down, frankly I was expecting total failure.

So haven't thought far ahead of this yet only a concept. It would require another cylinder but has anyone move a transfer near and exhaust and treated it like a air blade? I feel like it would be very timing orientated as not to loose too much pressure in crank.

Never but if you want to try something like that go for it it's not like it's a $300 dollar OEM cylinder but remember ms660 already have low case presser.

 

[Absolution]

Never but if you want to try something like that go for it it's not like it's a $300 dollar OEM cylinder but remember ms660 already have low case presser.

Anyone know what I have to play with?

 

[huskyboy]

I didn't touch carb saw pegged 13k. Still 4 stroking I'm going to turn in back to 12,500. I'll also try and do a video later.

Your loosing a lot of performance tuned to 12,500. If it’s anything like my 064, it likes around 13,200 ish. 13 would be safe.

 

[Absolution]

Sharp chain always makes a big difference.lol was the saw set at 13,000 or 12,500?

13,00 sorry i somehow missed this.

 

[MustangMike]

I test saws just the opposite, I like to see how hard I can lean on them before they slow down … I love torque!

 

[Absolution]

I finally broke down and bought a max flow air filter. I can't be more pleased and I wish I did it sooner. With the same tune as before the saw is running 13,400. I was also leaning into it pretty hard compared to what I could do before.