Saw builds

[jmssaws]

Its the best option I can see for a cylinder with a high exhaust and low intake.
I dont want to port it out to make it scream and push the power up to high, I just want it to run better.

Exactly
That's why I use them in poor cylinders

 

[Brewz]

Just went and measured it again to confirm.

Mahle 066 with 066 piston and stock gasket - 95/118/80
Mahle 066 with 288 piston and stock gasket - 92/114/78
Mahle 066 with 288 piston and no gasket - 94/116/79

by my calcs if I take .070 off the base and run a gasket, I will get close to 98/121/82 and I can live with that every day of the week

 

[Mastermind]

Ain't it amazing how many different port heights you will find in the 660?

 

[Keith Gandy]

Just went and measured it again to confirm.

Mahle 066 with 066 piston and stock gasket - 95/118/80
Mahle 066 with 288 piston and stock gasket - 92/114/78
Mahle 066 with 288 piston and no gasket - 94/116/79

by my calcs if I take .070 off the base and run a gasket, I will get close to 98/121/82 and I can live with that every day of the week

Man thats big exhaust!!!

 

[Keith Gandy]

Just went and measured it again to confirm.

Mahle 066 with 066 piston and stock gasket - 95/118/80
Mahle 066 with 288 piston and stock gasket - 92/114/78
Mahle 066 with 288 piston and no gasket - 94/116/79

by my calcs if I take .070 off the base and run a gasket, I will get close to 98/121/82 and I can live with that every day of the week

How much meat left on the base with .070 off?

 

[Brewz]

How much meat left on the base with .070 off?

Heaps!
They are really thick

 

[Brewz]

Man thats big exhaust!!!

Yeah I know and I have 2 cylinders the same which really poops me up the tree.

If I take a heap off the base with an 066 piston my intake will end up down at about 85 which would be counter productive.

The 288 piston is the savior of the crap times 066 cylinder.

I still like my 064 better. Wow its good at 14000 RPM

 

[Keith Gandy]

Yeah I know and I have 2 cylinders the same which really poops me up the tree.

If I take a heap off the base with an 066 piston my intake will end up down at about 85 which would be counter productive.

The 288 piston is the savior of the crap times 066 cylinder.

I still like my 064 better. Wow its good at 14000 RPM

Oh ya! I love my 064! Ran a few 660s that had the torque with a long bar but give me the ported 064 with less weight and a 28 es light and that makes me smile everytime

 

[jmssaws]

If I remember right Jason the KS 1st yr 046 was the one with spot on #s? I think John still has one we built that was a very strong stock

Some had very short bd.
I prefer the way a 046 runs with 20+ bd
I know most don't but I can make one stronger with more bd.

 

[Keith Gandy]

What kinda blowdown do u like on the 064 with oem piston? I cant remember my #s right now but Wiggles helped me with the 064. Im thinkin 102/117/78 if I remember right. Id have to check my notes

 

[jmssaws]

I like 21-23

 

[Keith Gandy]

I like 21-23

Higher exhaust or transfers?

 

[jmssaws]

Higher exhaust or transfers?

Transfers.
102 124 76 for instance.

 

[Toad22t]

If it were toast it would be burned toast, has a bazillion hours on it, went through 6 rings, the piston was stippled at the last to keep it from slopping around in the bore the chrome is almost gone. Thanks for your reply huskihl



Tor R, the old wore out cylinder is a Mahle.
.

I have a good oem 254 cylinder and meteor piston if you are interested in that.

While I do fully appreciate what you are saying here and yes I could still get it to go pop fooey, this guy is in the 10% by your reckoning, he used to work with the R&D department et Yamaha back in the 70's, so he knows a thing or two and specifically wanted a new cylinder for this saw, the only reason I did not buy OEM was it was in such poor shape overall and needed so many parts to be serviceable again, that to keep the price in check, as it is now between HL and Husqvarna just over $500.00 is already spent. A rational person would have junked this saw, but he loves that darn thing and wants it good again, so here I go. And I'm not making a dime from this either, like I said, he's my cousin and just beat cancer so whatever I can do to make what time he's left here on earth a happy one, I will do just that.

To bad you have some much invested already. I have a very nice ported 254 for sale. They are very nice saw's stock and just monster's ported. Good luck on your build.

 

[Keith Gandy]

Transfers.
102 124 76 for instance.

I know my transfers r higher than that but Ill check my notes when I get to the shop. Ole John will be there portin on that ms650

 

[jake wells]

Im not good at building saws but i can build one hell of a 2 stroke mower.
Had a friend at a machine help me open the transfer ports on this engine they happen to go all the way around the cylinder, Replaced all the bearings and seals and put a 20.00 set of perfect circle chrome moly rings in it. Compression cold is 135 lbs. engine uses a later model updated jug from a early 90's model muffler is opened up slightly on the inside but is still quiet.

 

[Keith Gandy]

Jason I was off alil after lookin at notes. 101/120/76 is my 064. .040 off base and set squish @ .022. Widened intake 70% and squared exhaust

 

[jmssaws]

I know my transfers r higher than that but Ill check my notes when I get to the shop. Ole John will be there portin on that ms650

I've been talking to him.

 

[jmssaws]

Jason I was off alil after lookin at notes. 101/120/76 is my 064. .040 off base and set squish @ .022. Widened intake 70% and squared exhaust

If you have a meteor in it you can get 70% on the exhaust. If it's oem widen as far as you can.
Big gain

 

[Keith Gandy]

He made it Jason! Poor 650 cylinder!! What kinda grindin britches does he have on??!!