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Had to bail on this hornets nest of testosterone poisoning years ago ... For 20+ years I had taken the time to do detailed picture laden write-ups ,.along with supporting dyno graphs while I owned my Dyno shops... All to help out anyone with interest on topics of porting / piston design/...

The thread title actually says : "372 pston swap/mod" Where "piston" is spelled wrong ... If their actually is a "pston", I'm totally in the wrong thread because I don't even know what that is... But as far as modding the 372 with a piston swap, I would think that an off the shelf stock bore...

Let me get this straight, you are stating that a company has bothered to non porosly weld aluminum and then re machine the piston ?? As opposed to being a company (meteor) that makes all sorts of pistons just deciding to machine a blank casting differently?? Also... I'm calling out anyone who...

So no deviation allowed under High top... Pop up... High compression piston arrangement?? No one allowed to discuss any alternatives to a machined 268 style piston at all... ?! Just one and only one piston for increased compression...?! That's a little Nazi like in a tech forum, don't you...

Ok... I'm always ready to learn something new... Not caring even a little bit where the base piston comes from, I'm ready to hear what difference it makes if you end up with the squish clearance and compression you are looking for . The topic can simply be about pistons that get you the deck...

Ordered one last night... Nice to have these readily and inexpensively available... OEM Husky cylinder is still in perfect shape and I was not excited about having to go to a 52mm aftermarket cylinder of unknown quality... so I'm glad that this 50mm stock bore version is again available For...

Excellent advice!! Similar priming rituals exist in the dirt bike world.... My mechanic brother in law will ask : "Ok, what's the voodoo ritual for this one?" When trying a new bike... For some of the meaner 2-stroke dirt bikes, this ritual is a miracle: Lay bike on side for 10seconds to...

Glad to see these finally available again.. Stock 50mm bore size.... Pop Up/ raised center dome / higher compression.. Just ordered one to try... My 372XP is lightly modded including porting and threebond used in place of base gasket for higher compression... Right now 160 PSI on the...

I was going to post up exactly that eBay listing... Stock 50mm bore size.... Pop Up/ raised center dome / higher compression.. Just ordered one to try... My 372XP is lightly modded including porting and threebond used in place of base gasket for higher compression... Right now 160 PSI on the...

Thank you... I have seen the 52mm one, but so far no luck on the 50mm...

It would be fantastic if I could just swap a 330 cylinder on there.. I have a couple extra 330 pistons... I think I read that the 330 has a different bolt pattern.. I don't have a 335 cylinder at this point.. Thanks much for the info!

I thought you just announced you were out... Aren't you late for drinking cheap beer and wife beating anyway...

Good... Now we are getting somewhere... All of you that are too far in the dark to understand some very important concepts being brought to light about tuning specific differences in piped and mufflered engines.... Don't need to bother reading anything I take the time to share.... It's a waste...

Gordon Jennings 2 stroke tuners handbook has been around for 40 some years.... Gordon is an engineer... And at one time an engineer of saws.... He is a renouned pioneer in 2 stroke performance.... And the good thing is that the physics his work is based on... Is still the physics of how it all...

Wow... The inner crowd of saw supremist circle jerkers are all going to have hands too cramped to fire their saws if they don't slow down on all the back patting and secret decoder ring code checking ... As a matter of fact... dirt bikes have a lot more complexity to their engines and their...

You have a lot of venom in your words there wcorey.... I have put pro riders on top of pro podiums in everything from flattrack to arenacross to sand hill drag racing... Owned Dyno shops and have done R&D of everything from custom pistons / exhaust / fuel injection systems... But not yet...

Lots to comment on but only time to bring up one huge variable here right now.... Exhaust system.... Motocross bikes and race saws use expansion chamber style exhaust... That exhaust will easily add 40% more power when matched correctly.... I'm not interested in using one on my work saws...

I'm all eyes.... Ears too... Got a bowl of popcorn at the ready... GO!! lol

Ted seemed to have not gotten up on the good side of the bed that morning.... Rain clouds for all...!! A 40% power gain would be expected instantly with the addition of an expansion chamber style pipe correctly matched to the 2 stroke engines application... A better increase in 2 stroke...

You guys are going to likely be bored with the level I find satisfying on my 372.... Where I used to live in Michigan , there weren't too many trees that would make it struggle cutting with a 24" bar... I was impressed with it's tune for straight out of the box, never having bought a saw over...