Author Topic: 55 EPA  (Read 1148 times)

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Offline wild262

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Re: 55 EPA
« Reply #20 on: January 03, 2017, 01:02:49 pm »
Most likely a 45mm then, going by your readings.  If it will clean up, I would put it back in service.  That's a good looking 55 you got there.  I've only rebuilt a couple of them, but were the open port which still made good power.  Certainly enough for cutting wood.  Be sure your plastic bulkhead (divider),  is in good shape.  Had to replace both on the ones I redone.

Offline farmboy

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Re: 55 EPA
« Reply #21 on: January 03, 2017, 09:49:19 pm »
Be  sure and replace the impulse grommet.  PN: 505-3107-51.
Shep

Offline SawTroll

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Re: 55 EPA
« Reply #22 on: January 04, 2017, 03:33:59 pm »
             Theres no question that being a closed port.  But what puzzles me is you said it measured 44mm!  I would think it ought to be 45mm.  I don't think the 44mm 51's were closed port.  Sawtroll would know.

Yes, obviously a closed port.

As far as I know Mahle 44ZN15++++++ is compatible with a 45 mm 44ZN15, that was used on those closed port 55s. However, I don't know if it excludes all 44 mm versions. A5 and/or W3 may have something to do with the bore size.

The "original" 44ZN15 was the 44 mm Partner P5000 cylinder.

I don't think the 44mm 51s were closed port either, but I don't remember the source of that info...




Offline SawTroll

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Re: 55 EPA
« Reply #23 on: January 04, 2017, 03:45:55 pm »
I measured the cylinder with my inside calipers and I got 4.5.075 inch

Measured the piston and got 4.5.070

.....   

I fail to understand those measurements?
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Online trail twister

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Re: 55 EPA
« Reply #24 on: January 04, 2017, 05:20:41 pm »
Measurements are USA non metric. 4 1/2inches (.o70 Hundreds?)
Ya'll are probably right not sure how I got the 44 mm thing in my head.
 ;D  Al

Offline SawTroll

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Re: 55 EPA
« Reply #25 on: January 06, 2017, 08:47:04 am »
Measurements are USA non metric. 4 1/2inches (.o70 Hundreds?)
Ya'll are probably right not sure how I got the 44 mm thing in my head.
 ;D  Al

That can't be the diameter though - did you actually measure the circumference, and not the diameter?

Online trail twister

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Re: 55 EPA
« Reply #26 on: January 06, 2017, 09:13:34 am »
I was using my calibers and measured from one side to the other so was the diameter not the radis . Same with the bore from one side to the other.

Need I do a picture, I can as it is pretty cold today. Really just right for wood splitting. Did some yesterday after noon and they were sure popping so easy.


 ;D  Al

Offline SawTroll

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Re: 55 EPA
« Reply #27 on: January 06, 2017, 10:50:40 am »
45 mm is less than 2 inches, certainly not more than 4 1/2.... ???


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Re: 55 EPA
« Reply #28 on: January 15, 2017, 07:09:09 am »
Will this piston ring fit my piston?
45 x 1.2mm Caber Replacement Piston Ring

The size is 45mm in diameter by 1.2mm thick, High Quality European Made by Caber.

 ;D  Al

Offline farmboy

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Re: 55 EPA
« Reply #29 on: January 15, 2017, 10:07:00 pm »
No 45mm x 1.5mm. Caber is good to go tho.
Shep