Author Topic: 371/372. with 272 single ring piston  (Read 717 times)

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Offline ej

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371/372. with 272 single ring piston
« on: September 24, 2015, 04:26:28 pm »
has anybody tried running a 272 52mm piston in a big bore 52mm 372/371 saw for daily use or modified just wondering if any improvments at all from duel ring setup up to single ring piston swap is it worth it?

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Offline 660magnum

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Re: 371/372. with 272 single ring piston
« Reply #1 on: September 24, 2015, 04:59:59 pm »
You can run just a single ring on a two ring piston if you like. I have a 372 that way.
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Offline ej

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Re: 371/372. with 272 single ring piston
« Reply #2 on: September 24, 2015, 05:04:10 pm »
yah iv done that too but just wondering if anybody as done this. ran a 272 piston in the 371/372 saw and if they noticed any gains at all

Offline 660magnum

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Re: 371/372. with 272 single ring piston
« Reply #3 on: September 24, 2015, 05:06:45 pm »
The 272 has a different height from the pin to the top (+1.5mm) and the overall piston length is different from a 372 (-2mm).
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Offline ej

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Re: 371/372. with 272 single ring piston
« Reply #4 on: September 24, 2015, 05:30:37 pm »
kinda sounds just like when I put a 395 piston in my 2100 huqvarna

Offline ej

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Re: 371/372. with 272 single ring piston
« Reply #5 on: September 24, 2015, 05:31:10 pm »
that's good info 660 magnum

Offline Cut4fun .

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Re: 371/372. with 272 single ring piston
« Reply #6 on: September 24, 2015, 05:32:55 pm »
Seen this http://chainsawrepair.createaforum.com/husqvarna/doing-an-experiment/msg40099/#msg40099

I had a 372 52mm racesaw with a 038 mag piston.

Offline mdavlee .

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371/372. with 272 single ring piston
« Reply #7 on: September 24, 2015, 05:37:17 pm »
064 piston fits with less work. I can't think of any full circle or non windowed 52 mm Pistons right off.

Offline Cut4fun .

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Re: 371/372. with 272 single ring piston
« Reply #8 on: September 24, 2015, 05:39:12 pm »
064 piston fits with less work.

Forgot about that one. Had that in a work saw. Meteor if I remember has wider skirts then OEM.

Offline 660magnum

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Re: 371/372. with 272 single ring piston
« Reply #9 on: September 24, 2015, 06:20:15 pm »
Yes, my big bore 372 has a 064 piston.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

 

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