Project Stumpbroke MS362

I 've got a Stihl MS362 here that needs some lovein. This will be my first Stil stratto to mess with.


Here's the baseline vid with a 16" B&C, 7 pin, white oak.
[video=youtube_share;Lq8Ep84FRcw]http://youtu.be/Lq8Ep84FRcw[/video]

This saw will be going into service for a tree care service crew. Hope that I can get the gains I'm expecting.

opcorn:

Don't sound bad now!
Make'r rip!

Dang man, you're on a roll... :msp_w00t:

These have a whole different lowere transfer setup.


Not much I'll be able to do with the intake either.

Plenty of room to make the exhaust flow.

Upper transfers look promising.

sunfish said:

Dang man, you're on a roll... :msp_w00t:

Click to expand...

Just call me butter.:msp_rolleyes: Stumpbroke butter, kinda catchy:msp_w00t:

Nice flat piston to start with.

.040'' popup.



I turned the base of the cyl down so I can still run a gasket. Got the squish set at .020'' from the stock .030''.

Nice!!!!

The stock timing #'s are
EX-156*
TR-102*
IN-140*
BD-27*

So as I see it there's 4 openings at the base, are all four lower transfers or are two of which the strato intakes? And can you open these up and get more flow to the upper transfer ports? Its a saw I've been desperately wanting to port so I will be following this one. Thanks for the info and pics.

Stihl n Wood said:

So as I see it there's 4 openings at the base, are all four lower transfers or are two of which the strato intakes? And can you open these up and get more flow to the upper transfer ports? Its a saw I've been desperately wanting to port so I will be following this one. Thanks for the info and pics.

Click to expand...

All four of the lowers are transfer ports. I opened them up a lil, just matched them to the gasket. I Would like to try & notch the skirt of the cyl to gain more flow, but that'll be on a different project.

You can see the stratto ports here.

They're the ones just below the upper transfers.

I didn't mess with the stratto timing other than what lowering the base did for it.

These Strato saws are crazy looking.
I'm looking at that the same way Grandpa looked at Fuel Injection, I don't know if I will ever mess w/ one.
Very cool!!

Hey stumpy can you post a pic of the lower end please. I'm curious to see the layout of the stuffers ect....thanks

Stihl n Wood said:

Hey stumpy can you post a pic of the lower end please. I'm curious to see the layout of the stuffers ect....thanks

Click to expand...

This is the only shot of the lower end I've got. This one don't have any stuffers.


Here's what I did to the lowers.



The uppers


Intake


Exhaust

Just picked up my 362 a week ago, can't wait to see how this one turns out. :msp_thumbup:

Here's what I done did to the muffler.
I pretty much wasted my time cutting this one apart. I was expecting something like the 361, but this one is open enough that I didn't yake anything out of the insides.

I welded it back together & opened up the stock port.


I added another port to the other side. It's been awhile since I've played with stainless.:msp_thumbup:

I fabbed up a deflector out of some stainless.

Here's the modded timing #'s

EX-166*
TR-118*
IN-160*
BD-24*

Vids of the results are uploading.

Nice!! opcorn:

o man the suspense is killer i don't even get this excited for xmas anymore.

Best stock cut time is 10.4...
I'll bet stump knocks a couple off that...

dangit stumpy can't you port you internet modem to get a little more speed on these uploads.