OEM 365 closed port or AM 52mm Big Bore?

[Kiwioilboiler]

Hi lads.
Picked up a couple of 365 saws last night. The SP will get a standard OPE build on the 48mm CP jug, but I'm in two minds about the 'straight' 365.
I have a new BB kit here from a previous project. Is it likely to make a stronger saw than the smaller cc but probably better cast 365 op jug?

 

[Stump Shot]

There were some BB372 kits years ago that ran quite well, then went right back into the dumper. So hard to say if you "won" or not on the cylinder lottery.
The 365 Special is a pretty good running saw and would be what I would recommend.

 

[Kiwioilboiler]

There were some BB372 kits years ago that ran quite well, then went right back into the dumper. So hard to say if you "won" or not on the cylinder lottery.
The 365 Special is a pretty good running saw and would be what I would recommend.

Yeah the 365Sp path is clear, it's what to do with the Not So Special SteveH. You're suggesting another 48mm CP jug?

 

[Stump Shot]

Yeah the 365Sp path is clear, it's what to do with the Not So Special SteveH. You're suggesting another 48mm CP jug?

...or a 50mm 372 OE.

 

[Kiwioilboiler]

...or a 50mm 372 OE.

All good ideas, but i'm on the "use what i got" buzz with this one.

365 OP or 377 BB.

 

[Stump Shot]

All good ideas, but i'm on the "use what i got" buzz with this one.

365 OP or 377 BB.

Both are good for torque type motor. The saw will have more value with an original cylinder is about the biggest difference I see here.

 

[Stump Shot]

I'd keep the BB kit for an emergency some day down the road and you need to get back up and running right away.

 

[cuinrearview]

I don't think the open port intake will work on the BB. If that helps...

 

[Kiwioilboiler]

I don't think the open port intake will work on the BB. If that helps...

Yeah i think i have that covered Timoti. In a box, somewhere....

 

[Maintenance Chief]

The bb372 52mm cylinder definitely needed a little help to be a decent runner as in I took 2 small hand fulls of aluminum out of it. No machine work though.
I put mine on a blue saw, so no pedigree to maintain and not really an issue.