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Author Topic: opinions on piston rings.....dolmar 143  (Read 2737 times)

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opinions on piston rings.....dolmar 143
« on: March 14, 2014, 06:38:51 am »
I have a 143 that I think I can salvage with a little smoothing on the piston and a new set of rings... i haven't done much searching but can any set of 55mm rings as long as they are the same thickness be used in a chainsaw?  It seems that many 2stroke dirt bikes used 55mm rings and from what little searching I've done are cheaper and easier to find. ...opinions?
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Re: opinions on piston rings.....dolmar 143
« Reply #1 on: March 14, 2014, 06:48:25 am »
I used husky 394 rings in my one of my dolmar 166.  So I would say yes.
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Re: opinions on piston rings.....dolmar 143
« Reply #2 on: March 14, 2014, 06:52:12 am »
55mm by 1.5mm or 1.2mm  ?  Husky 390 has 1.2mm


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Re: opinions on piston rings.....dolmar 143
« Reply #3 on: March 14, 2014, 09:25:19 am »
The only problem you might encounter is how the ring end gap is finished e.g. for off-set or centered locating pin. There were at one time rings that when compressed had no end gap at all, they completely wrapped around the locating pin.
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Re: opinions on piston rings.....dolmar 143
« Reply #4 on: March 14, 2014, 01:18:11 pm »
Thanks for the info... i will measure the thickness when I get back out to the shop.... i saw those Cut but I have purchased from this seller before and the product was good but shipping from Athens took forever! Just thought I might find something in that price range but a little closer. ....i will investigate more once I'm back on a normal computer. ....A little easier than the phone. ...
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Re: opinions on piston rings.....dolmar 143
« Reply #5 on: March 14, 2014, 01:47:46 pm »
Just saving info.

Dolmar 133 143 IPL http://www.jurec.hr/pdf/dolmar-133s-143.pdf

ring 031132040  is 55mm 1.5mm

ring 031132050 is 55mm  1.2mm      I am betting you can use the husky 390 ring if your 143 has this one.

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Re: opinions on piston rings.....dolmar 143
« Reply #6 on: March 14, 2014, 01:51:50 pm »
IF you get lucky and 1.2mm  thick  $6 apiece http://northwoodsaw.com/store/index.php?l=product_detail&p=1273

Replacement Piston Ring for Husqvarna 390 and other equipment, High Quality European Made by Caber. The size is 55mm in diameter by 1.2mm thick. The price listed is per ring.
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Re: opinions on piston rings.....dolmar 143
« Reply #7 on: March 14, 2014, 08:39:25 pm »
If you are using a dirt bike ring,make sure it is not chrome coated, because the 143 cylinder is chromed too. You cant use chrome on chrome.
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Re: opinions on piston rings.....dolmar 143
« Reply #8 on: March 17, 2014, 09:07:10 am »
The 1.2mm will work so I will order them today.  Thanks for all the help & input.... i will post once I get it running. ..
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