Stroked 440

[Loony661]

Has anyone tried putting a 460 crank in a 440? If that’s not possible, has anyone tried putting a 440 top end on a 460? I would think it would have a lot of torque with wither conversion. Thoughts?

 

[dall]

still dreaming of alaska sunrises ?

 

[srcarr52]

440 and the 460 have the same 36mm stroke.

 

[Loony661]

440 and the 460 have the same 36mm stroke.

Ah, thanks. I should have probably dug a little deeper before asking.

 

[ManiacalMark]

064 crank has been put in a 460, seems pointless to me though.

 

[drf256]

064 crank has been put in a 460, seems pointless to me though.

Link?

 

[MemphisMechanic]

@Loony661 I assume you are also aware than the hot ticket is to build a hybrid… an 044 with an 046 top end on it

 

[qurotro]

440 and 460 basically have the same crank. Same connecting rod and stroke but different width on the shafts and counter weights.

 

[Loony661]

@Loony661 I assume you are also aware than the hot ticket is to build a hybrid… an 044 with an 046 top end on it

Yes I am aware of that, I was thinking outside the box. But didn’t take into account they already share the same stroke.

 

[drf256]

The 460 is the evolution of the 044. Bigger stronger crank. More oil and fuel capacity and 2mm bigger bore with same stroke.

A good 460 will generally outrun and hybrid. The 460 crank is around 80-100 grams heavier than the 12mm 440 crank. Haven’t weighed in som time, but side by side the difference is obvious.

The 460 crank has a groove for a C clip that the 440 doesn’t share. It also uses a standard PTO side seal that’s the same as 026/036. The 440 crank uses a crank spacer and bigger seal.

A 460 crank won’t fit into a 440 case. I would be interested in putting an 064/066 crank into a 460, as the 066 jug base bolt pattern is the same as the 460. Could increase displacement by 14cc, but seems like a lot of work for a saw that would be marginally lighter and smaller than an 064 with an 066 top end.

 

[ManiacalMark]

Link?

Something Brisco did, took a lot of meat off the crank

The 460 is the evolution of the 044. Bigger stronger crank. More oil and fuel capacity and 2mm bigger bore with same stroke.

A good 460 will generally outrun and hybrid. The 460 crank is around 80-100 grams heavier than the 12mm 440 crank. Haven’t weighed in som time, but side by side the difference is obvious.

The 460 crank has a groove for a C clip that the 440 doesn’t share. It also uses a standard PTO side seal that’s the same as 026/036. The 440 crank uses a crank spacer and bigger seal.

A 460 crank won’t fit into a 440 case. I would be interested in putting an 064/066 crank into a 460, as the 066 jug base bolt pattern is the same as the 460. Could increase displacement by 14cc, but seems like a lot of work for a saw that would be marginally lighter and smaller than an 064 with an 066 top end.

I’d say an 064 and 046 are about even for weight empty, or maybe a 461 would be closer.

 

[Loony661]

The 460 is the evolution of the 044. Bigger stronger crank. More oil and fuel capacity and 2mm bigger bore with same stroke.

A good 460 will generally outrun and hybrid. The 460 crank is around 80-100 grams heavier than the 12mm 440 crank. Haven’t weighed in som time, but side by side the difference is obvious.

The 460 crank has a groove for a C clip that the 440 doesn’t share. It also uses a standard PTO side seal that’s the same as 026/036. The 440 crank uses a crank spacer and bigger seal.

A 460 crank won’t fit into a 440 case. I would be interested in putting an 064/066 crank into a 460, as the 066 jug base bolt pattern is the same as the 460. Could increase displacement by 14cc, but seems like a lot of work for a saw that would be marginally lighter and smaller than an 064 with an 066 top end.

This would be very interesting. I wonder how touchy it would be with the obviously smaller case volume..? Maybe a screamer..

 

[srcarr52]

This would be very interesting. I wonder how touchy it would be with the obviously smaller case volume..? Maybe a screamer..

It didn't turn out that well in his test runs and it seems he's abandoned the project.

 

[qurotro]

The 460 is the evolution of the 044. Bigger stronger crank. More oil and fuel capacity and 2mm bigger bore with same stroke.

A good 460 will generally outrun and hybrid. The 460 crank is around 80-100 grams heavier than the 12mm 440 crank. Haven’t weighed in som time, but side by side the difference is obvious.

The 460 crank has a groove for a C clip that the 440 doesn’t share. It also uses a standard PTO side seal that’s the same as 026/036. The 440 crank uses a crank spacer and bigger seal.

A 460 crank won’t fit into a 440 case. I would be interested in putting an 064/066 crank into a 460, as the 066 jug base bolt pattern is the same as the 460. Could increase displacement by 14cc, but seems like a lot of work for a saw that would be marginally lighter and smaller than an 064 with an 066 top end.

Actually I don’t really think the 460 has a stronger crank.. the con rod is the same, big and small end.

 

[ManiacalMark]

I think 80cc would be about the limit on a 440/460, 54mm bore doesn’t work nor does a 40mm stroke.