Husqvarna 357xp build, auto decomp removal

[Tor R]

I tapped that hole and used a set screw with loctite

its the same way I do with them, I didnt trust the normal locktite so I used 518. I dont plan to take out the screw again lol

 

[Swedish_445]

I was a bit skeptical with the red loctite also. Ill be using 518 for my base, so ill use it here also..

 

[Tor R]

I was a bit skeptical with the red loctite also. Ill be using 518 for my base, so ill use it here also..

you can use one of those short screws we use for 254 AV's, M5×10mm + 518.

They look like this:
https://www.partstree.com/parts/husqvarna/parts/725532555/

 

[Swedish_445]

I used a 10-32 set screw i happened to have on hand +518.. my parts arived last night and i should have done my research on this, but i read somewhere about using a 372 intake clamp on the 357.. the clamps arrived and are much too large. I really dropped the ball on this one. Didnt even look at my 372 to compare before ordering..
what clamps are you guys using? I know the plastic oem is junk, is the upgraded metal oem reliable? Or is there a screw type clamp which fits the 357 346 350s that i should use instead?

 

[old guy]

If the clamps you got are much too large, you do not have 372 clamps, I use 372 clamps and if anything I would like them slightly larger.

 

[NCFarmboy]

You need 268-272 HDAF clamp. PN: 503-5600-03 RB:588-7755-01 https://www.jackssmallengines.com/jacks-parts-lookup/part/503560003
Shep

 

[Tor R]

Or is there a screw type clamp which fits the 357 346 350s that i should use instead?

390 clamp is the one who fit 100%.
When JRed came with their service bulletin for the fix it was the clamp from 2077 they used.
503 56 00 03 => 505 28 33 02 => 588 77 55 01

 

[Swedish_445]

So i bought clamps for the 372 xtorq.. found this which fits 390, 272, 268. Look about right?

 

[NCFarmboy]

Yes, that's the one.
Shep

 

[Swedish_445]

Replace the partition intake wall/impulse or modify the existing to work with new clamp?

 

[Simondo]

Replace the partition intake wall/impulse or modify the existing to work with new clamp?

Have done both...with the new partition you can get the snap clamp and boot. I like the full kit if its a customer saw but if its mine and im sure of the parts then i might just mod the partition. ...New partition has a up stand on it for the clamp to sit in...neat... and needs the right clamp band width to fit.

 

[Mastermind]

I tapped that hole and used a set screw with loctite

That's how I do em too.....

 

[Swedish_445]

Definitely wish I would have plugged the decomp on my 338xpt this way! Nice, clean, and reliable way to go about it..
Got everything ready for assembly this weekend. Just waiting on intake parts now. Old girl cleaned up pretty well!

 

[Termitebuffet]

Definitely wish I would have plugged the decomp on my 338xpt this way! Nice, clean, and reliable way to go about it..
Got everything ready for assembly this weekend. Just waiting on intake parts now. Old girl cleaned up pretty well!
View attachment 72751
View attachment 72759
View attachment 72761

It looks very nice , that intake boot ain't easy to put on with the cylinder installed on the case...[emoji2]

 

[Swedish_445]

Haha, I knew most of you would notice this.. the jug and muffler were not bolted to the case yet and piston was not installed. I know to drop the whole intake-cyl-muffler assembly onto the piston/case. I was bored and anxiously waiting for parts when i took these pictures!

 

[Swedish_445]

Dealer had 537251302 partition and clamp kit on hand. Giddy up!! Got my top end assembled. Unfortunately, that's all my toddler will let me get done tonight...

 

[Swedish_445]

Finished assembly last night. Decided not to fire it up and wake the neighbors though. Just curious, anyone running an 8pin rim with 18 or 20inch 3/8 bar and chain on this saw after porting? Plan to stick with the 7pin, but wondering if anyone's had luck with this setup?

 

[Swedish_445]

This thing is stupid! I ran it last night and im still grinning. Tuned to 14,600ish holds about 12k in the wood. Glad we installed the manual decomp also, compression is around 170 right now. Thanks for the tips on this one boys. Only problem now is giving it back! Any stock 357's out there for sale???

 

[chipper1]

This thing is stupid! I ran it last night and im still grinning. Tuned to 14,600ish holds about 12k in the wood. Glad we installed the manual decomp also, compression is around 170 right now. Thanks for the tips on this one boys. Only problem now is giving it back! Any stock 357's out there for sale???

Great job, sounds fun.
I have a 359 here .
These are saws come alive with a base gasket delete and a little muffler work, then they are even better when they are ported.

 

[Swedish_445]

I originally planned on a muffler mod, gasket delete, and auto-decomp removal.. after reading an few threads and talking to the owner, he told me he didnt care what i did to the saw, just to do my thing!

I kept the muffler around 70-80% of exhaust port, matched the lower transfers to the case, but left the upper transfers alone. Raised the exhaust a few degrees and widened to about 60% + of bore and polished. Also widened intake a little and set at 75deg. Bigger bar, bigger spikes, and a serious deep clean! I love the ported worksaw theory, modified yet extremely reliable.. I believe this 357 will fit this class nicely.