372XP/XT Lower Transfer Clean Up

[XP_Slinger]

Hey Guys,

Looking for an experienced opinion on my shaping job of the lower transfers on my 372 XT. The crank opening was massive compared to the cylinder side. I went at it with the goal to make the transfer opening act more like a funnel and eliminate turbulence as the charge transfered from the case to the cylinder. The saw runs good, I did this clean up simultaneously with deleting the base gasket so i can't speak to whether or not this shaping helped performance on its own. Thanks for your time. @Mastermind

 

[Ironworker]

You might wanna take the rest of the intake off and clean real good, you never know where them shavings end up. Did you do anything to your exhaust?

 

[XP_Slinger]

I did this work a few weeks ago and it got a very thorough cleaning afterward. I didn't touch the exhaust because of my limited grinding attachments (dremel).

 

[Ironworker]

You can do a lot with a Dremel, just gotta have the right bits and experience. Do a YouTube search on porting. A 372 is a little too fancy to be learning on, the first saw I ported was a homeowner husky 445, all I did was widen the intake and exhaust my next was a 353 with a 346 Hyway top end and moved up from there.

 

[XP_Slinger]

You can do a lot with a Dremel, just gotta have the right bits and experience. Do a YouTube search on porting. A 372 is a little too fancy to be learning on, the first saw I ported was a homeowner husky 445, all I did was widen the intake and exhaust my next was a 353 with a 346 Hyway top end and moved up from there.

Good advice and I definitely won't be experimenting on my 72 when I start porting and actually changing port timing. I was just looking to increase flow efficiency from the case into the transfers in this instance. I think I accomplished that and the saw still runs great so no harm done.

 

[Ironworker]

Good advice and I definitely won't be experimenting on my 72 when I start porting and actually changing port timing. I was just looking to increase flow efficiency from the case into the transfers in this instance. I think I accomplished that and the saw still runs great so no harm done.

You'd be surprised at how much of a gain you can get with just minimal work, did you do a muff mod.

 

[XP_Slinger]

You'd be surprised at how much of a gain you can get with just minimal work, did you do a muff mod.

Yes I gave it a muffler mod. I used a 288xp deflector and screen. I have been very happy with the results of these simple mods ( base gasket delete & MM). Once tuned up it came to life. Next I will be advancing the timing a bit as I have read that these saws really like a little advance.