Stihl ms 460/660 Hybrid. 469e

[NateSaw]

Why not deck the case?

Lowering the jug is lowering the jug. What would I gain there? I ask out of lack of knowledge.

 

[NateSaw]

Have you advanced the ignition?

Glad you popped in brother. Will you be heading to Joe and Scott's gtg? I look forward to seeing you and your jreds again. (I have grown my stock of arborists mailers for base gasket material, and I'll bring anaerobic)

 

[David Young]

Lowering the jug is lowering the jug. What would I gain there? I ask out of lack of knowledge.

One gain is if you need to retain base thickness. Sometimes you take too much and the base will crack. Also. You could make the saw accept a more standard jug. Maybe an aftermarket to try things before you move to a more expensive jug.

 

[David Young]

Also cool build and thread

 

[ManiacalMark]

Lowering the jug is lowering the jug. What would I gain there? I ask out of lack of knowledge.

I was thinking it would leave more meat on the base of the jug but that’s not really the issue.

 

[NateSaw]

I was thinking it would leave more meat on the base of the jug but that’s not really the issue.

660's have very meaty bases.

 

[Powerstroke Cowboy]

Bingo. That's it. And it's a big traffic jam waiting to get off the freeway. Thanks Caleb. I'm not good at explaining.

Number two piston might not be a loss though, if you know a good welder, or you can weld aluminum.

What if you put a spot of weld at each spot where the ring gap is. Just filled in the ends of then, than chucked it up and the lathe to clean it up? No more channels feeding crank air right out the exhaust?

Just a thought I had when I should have been sleeping.

Another thought. I wonder if you could get the Husqvarna 395xp cylinder to bolt on? The base would need the bolt holes changed out. It has a 12mm wrist pin as well as a 38mm stroke.

 

[Mastermind]

Number two piston might not be a loss though, if you know a good welder, or you can weld aluminum.

What if you put a spot of weld at each spot where the ring gap is. Just filled in the ends of then, than chucked it up and the lathe to clean it up? No more channels feeding crank air right out the exhaust?

Just a thought I had when I should have been sleeping.

Another thought. I wonder if you could get the Husqvarna 395xp cylinder to bolt on? The base would need the bolt holes changed out. It has a 12mm wrist pin as well as a 38mm stroke.

I used a 395 slug in a 066 big bore jug once. Ran it for awhile on pipe. Swapped that out for an oem standard bore jug and slug, made it much faster.

 

[Mastermind]

When you decide to take the 066 jug off, try this.

THE DUKE'S NIKASIL BIG BORE CYLINDER FITS STIHL 046 MS460 54MM HOLZFFORMA G466

Quality part, tool or accessory

www.sawsalvage.co

 

[Mastermind]

Then when you realize that it ain't all it can be, put a well ported 52mm oem top end on it, and watch that mfer go !!!

LMFAO

 

[Rich Fife]

I rarely mess around with stuff like this because sooner or later someone will show up with a pure 1128 and kick your ass with it. That’s just how it goes.

I'm calling S.
Once the bugs are worked out and things are right for this specific build... this thing 'should' Eat! A stocker. Especially if he maximizes the cylinder/case volume/charges.
Me personally, I'd like/love to see this with a 2mm larger piston.

I'd play around with case volume as well...
Needless to say, I'm digging this project.

 

[Powerstroke Cowboy]

I used a 395 slug in a 066 big bore jug once. Ran it for awhile on pipe. Swapped that out for an oem standard bore jug and slug, made it much faster.

I wonder how it would have done with an OEM 395 jug?

 

[NateSaw]

When you decide to take the 066 jug off, try this.

THE DUKE'S NIKASIL BIG BORE CYLINDER FITS STIHL 046 MS460 54MM HOLZFFORMA G466

Quality part, tool or accessory

www.sawsalvage.co

I like duke's am stuff.

 

[NateSaw]

Then when you realize that it ain't all it can be, put a well ported 52mm oem top end on it, and watch that mfer go !!!

LMFAO

You know it!

 

[NateSaw]

Then when you realize that it ain't all it can be, put a well ported 52mm oem top end on it, and watch that mfer go !!!

LMFAO

I do have a d jug doc mailed me

 

[NateSaw]

Number two piston might not be a loss though, if you know a good welder, or you can weld aluminum.

What if you put a spot of weld at each spot where the ring gap is. Just filled in the ends of then, than chucked it up and the lathe to clean it up? No more channels feeding crank air right out the exhaust?

Just a thought I had when I should have been sleeping.

Another thought. I wonder if you could get the Husqvarna 395xp cylinder to bolt on? The base would need the bolt holes changed out. It has a 12mm wrist pin as well as a 38mm stroke.

I can weld aluminum... However, the heat softens the metal. When you weld on 6061 t6, it's not t6 after. It anneals.

 

[ManiacalMark]

When you decide to take the 066 jug off, try this.

THE DUKE'S NIKASIL BIG BORE CYLINDER FITS STIHL 046 MS460 54MM HOLZFFORMA G466

Quality part, tool or accessory

www.sawsalvage.co

I ordered one earlier this week, $50 worth a shot, just hope the transfers are decent. NWP big bores were junk

 

[NateSaw]

I ordered one earlier this week, $50 worth a shot, just hope the transfers are decent. NWP big bores were junk

Shoot us a picture when you get it please! I'd love to see the ports.

 

[Rich Fife]

Lowering the jug is lowering the jug. What would I gain there? I ask out of lack of knowledge.

Lowering the jug you gain duration without potentially sacrificing the inlet charge.
Cutting the case you gain duration while losing a little volume... is it enough to notice a difference? I guess that would be something to play with for R&D purpose.

Maybe Look into transfer stuffers to change the velocity, volume and direction of the charge.

 

[NateSaw]

Lowering the jug you gain duration without potentially sacrificing the inlet charge.
Cutting the case you gain duration while losing a little volume... is it enough to notice a difference? I guess that would be something to play with for R&D purpose.

Maybe Look into transfer stuffers to change the velocity, volume and direction of the charge.

Not in this case. The skirt never passes the roof of the intake. It needed epoxy at docs recommendation to allow flow around it. I had the thought of epoxy in the transfers.