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Author Topic: 359/357xp  (Read 1813 times)

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Offline Bluegill

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Re: 359/357xp
« Reply #20 on: December 08, 2014, 06:33:51 pm »
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Sounds like it is good enough the way it is.
It is just find! Stronger than stock for sure.

I was thinking of making it a cant racer. But might just leave it alone and use the old ported 357 for that, it feels a bit faster right now. I need to time both.
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Offline Bluegill

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Re: 359/357xp
« Reply #21 on: December 08, 2014, 06:37:32 pm »
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Bluegill I know you like .325.  All these times are with 3/8.

12" round maple

stock husky 346xp 50cc  3/8 7T  5.63  5.62

stock dolmar 5105 with 5100 muffler 50cc   3/8 7T  5.59  5.50

stock partner 5000 49cc 3/8 7T 5.47 5.84

stock 357xp 56.5cc 3/8 7T  4.29  4.34

Thanks for that Kevin. I do like .325, but am starting to use more 3/8 on the 346s'.

I have always liked the 357xp!!!
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Offline man of stihl

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Re: 359/357xp
« Reply #22 on: December 08, 2014, 09:23:36 pm »
Quote from: Bluegill on December 08, 2014, 02:07:49 pm
Well, it's alive and strong as hell. :D

New bearings, seals & oem 357xp top-end. I took .027" off the cylinder base to bring the squish down to .020". Comp is at 195 psi with only one and a half tanks through it.

My other older 357 is at 190 with just a base gasket delete, so there is something good about these 357 cylinders! There is no point in cuttin squish band or doing a pop-up with this kind of comp, IMO.

Not ported yet, I'm waiting on a right angle hand piece for my flex shaft grinder. I'll likely just raise the upper transfers about .040-.050" and open up the exhaust port a bit.
pics/video or it didn't happen :-)
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Ron

Offline Bluegill

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Re: 359/357xp
« Reply #23 on: December 08, 2014, 09:54:21 pm »
Yeah, I know. Will get a couple pics tomorrow, can't do vids...
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Offline farmboy

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Re: 359/357xp
« Reply #24 on: December 08, 2014, 10:45:48 pm »
I'm in the process of doing a bunch of 357, 359 variants.  Going to try and keep all with the same work done to cyls.
359 bottom end 357 top (done)
357 bottom end 359 top (in progress)
357 bottom end Hyway 47 mm top
359 bottom end 359 top (done)
359 bottom end 359 top w/47mm dolmar 6400 piston
359 bottom end Hyway 47mm top Dolmar 6400 piston
Think that is enough LOL.
Shep
Forgot have stock 357 and a stock 359 to compare to.
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Offline 660magnum

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Re: 359/357xp
« Reply #25 on: December 08, 2014, 10:53:04 pm »
I was of the understanding that the 359 cylinder did pretty good to open up the transfers like you normally would a 357?
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Offline Bluegill

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Re: 359/357xp
« Reply #26 on: December 09, 2014, 10:11:16 am »
I've run some Very Strong 359s' But I like the 357 cylinder a lot better!

Shep, how do they compare, what seems to be the best combo?
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Offline farmboy

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Re: 359/357xp
« Reply #27 on: December 09, 2014, 12:28:30 pm »
Quote from: 660magnum on December 08, 2014, 10:53:04 pm
I was of the understanding that the 359 cylinder did pretty good to open up the transfers like you normally would a 357?
They do!  It's amazing what cutting the bridge out and blending the transfer covers toward intake.

Quote from: Bluegill on December 09, 2014, 10:11:16 am
I've run some Very Strong 359s' But I like the 357 cylinder a lot better!

Shep, how do they compare, what seems to be the best combo?
I don't know personally but I will.  I've heard ported 359 top on 357 bottom is "The" combo.
What I'm doing is basic WP for work saw on all cyls. to begin with.
Shep
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Offline Cut4fun .

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Re: 359/357xp
« Reply #28 on: December 09, 2014, 01:27:41 pm »
Quote from: farmboy on December 08, 2014, 10:45:48 pm
I'm in the process of doing a bunch of 357, 359 variants.  Going to try and keep all with the same work done to cyls.
359 bottom end 357 top (done)
357 bottom end 359 top (in progress)
357 bottom end Hyway 47 mm top
359 bottom end 359 top (done)
359 bottom end 359 top w/47mm dolmar 6400 piston
359 bottom end Hyway 47mm top Dolmar 6400 piston
Think that is enough LOL.
Shep
Forgot have stock 357 and a stock 359 to compare to.

Man you got your hands full there. 

I remember guys doing this type stuff on racesaws back in the day with OEM parts.  Sad part I cant remember the outcomes anymore. 

Keep us updated.
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Offline aclarke

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Re: 359/357xp
« Reply #29 on: December 09, 2014, 02:49:53 pm »
Shep, I'm curious about the 359 with dolmar piston, what the idea behind that one?  Windows?  Thanks Adam
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