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Post by charliec on Sept 6, 2023 9:43:03 GMT -5
Hi,
I just wish to confirm that the original piston ring to my Super 2 (Part #: 70205, per IPL) was superseded by part # 93165, please advise.
If there are more superseding part numbers please let me know that as well.
Thanks,
Charlie
P.S., You just gotta love how Homelite created superseding numbers but never created a chart (i.e. quick reference) showing the change. I know, they created "service bulletins" but they are not the easiest thing to find/index amd/or cross reference (i.e., non-term/title searchable). Perhaps someday someone will scan the Service Bulletins into a computer as searchable text vs. a PDF... hint... hint!
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Post by blythkd on Sept 7, 2023 16:44:20 GMT -5
Where are you getting your information on the piston ring part numbers? They're both listed in the NPPL (price list) with no mention of one superceding the other. Maybe it took place later than my price list?
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Post by bobby167 on Sept 7, 2023 18:29:20 GMT -5
Hi, I just wish to confirm that the original piston ring to my Super 2 (Part #: 70205, per IPL) was superseded by part # 93165, please advise. If there are more superseding part numbers please let me know that as well. Thanks, Charlie P.S., You just gotta love how Homelite created superseding numbers but never created a chart (i.e. quick reference) showing the change. I know, they created "service bulletins" but they are not the easiest thing to find/index amd/or cross reference (i.e., non-term/title searchable). Perhaps someday someone will scan the Service Bulletins into a computer as searchable text vs. a PDF... hint... hint! Could you post the UT number? As blythkd said, both are good numbers. I think the 7025 fits "select" Super 2 / 180 / 200 / XL and Lx30 saws. Most IPL's show the 93165. There "should" be a 1.9 cu inch And a 2.0 cu inch. |
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Post by charliec on Sept 8, 2023 7:59:38 GMT -5
The saw is a VI Super 2 (UT 10563A)
Thanks.
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Post by bobby167 on Sept 8, 2023 8:11:38 GMT -5
Thanks. That saw shows it uses the 7025 ring.It shows it is used for UT number 10653 & 10654 If you look at the IPL, it also shows a different piston part number. Not 100% sure if the 93165 is the same or not. I do not have one here to check size. The 7025 ring is still listed.
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Post by charliec on Sept 8, 2023 8:22:14 GMT -5
This is why I am asking someone to confirm if the 93165 is a superseding #.
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Post by charliec on Sept 10, 2023 16:57:50 GMT -5
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Post by charliec on Sept 13, 2023 19:15:21 GMT -5
Hello again, I contacted Leon directly about this topic and I am paraphrasing here; He has used both part numbers (i.e., interchangeably) on Super 2's and they have worked. He is not sure why Homelite used two different numbers nor can he recall any difference between the products (i.e., is one different/better than the other?). He did include a link to an IPL on his website (see below) for UT 10654 (Super 2, Plastic case model/ post 1985) and UT: 10655, XL Model). Notice on page 8 of the IPL where it lists both ring numbers (70205 and 93165) under the column for the Super 2 (part # 20 in the IPL listing). The interesting thing from my perspective is how Homelite listed/described them (i.e., "primary" and "alternative"). To the best of my recollection, I have never read that term in any Homelite IPL previously. My working hypothesis/guess about part number (91365) is that it is not a superseding number scenario but a mess-up/directive/strategy by Homelite back in the day. If I recall correctly, the 93165 ring was also used on a string trimmer/weed wacker (can't remember which one(s)). Perhaps (i.e., big guess, 15% chance) the engineers and/or management team that designed the String Trimmer wanted to differentiate itself from the saw group so they created new part numbers. Later someone said "What the heck" and linked the two back up via a non conventional method (i.e. no "SB" or price list footnote) but let it be known that they are interchangeable via an IPL. Granted, I could be way... way off base. If anyone has a better understanding of what really happened or has seen this language (i.e., Primary/Alternative) used before or since, please enlighten us all via a reply. In addition, if anyone knows of a difference between the two parts ( e.g., laminated layers vs. one piece construction, metallurgy, tolerances, etc.), please advise. Leon, if I misstated or left anything out, my apologies. Charlie ---------------------- www.leonschainsawpartsandrepair.com/uploads/3/9/7/9/39792537/homelite_super_2_ut-10654_xl_ut-10655_chainsaw_ipl_17868_.pdf |
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Post by blythkd on Sept 13, 2023 19:36:22 GMT -5
Charliec, thanks for the legwork and the writeup. The ST-200 string trimmer also calls out 70205 primary and 93165 as alternate. Interesting. All the smaller units that I checked, ST-80, ST-100, ST-160, ST-160A, ST-165 are variants of the smaller XL engine so they use the 69312 piston ring, which also lists a "primary source" and "alternate source." The primary 69312 says see Note 1 which states it's for a pinless piston. The alternate is 69312-1A is evidently for a piston with a ring locating pin. Not saying any of this applies to the Super 2 rings but I really don't know. Take from it what you will.
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Post by charliec on Sept 14, 2023 9:48:41 GMT -5
Interesting..... If the there is a Homelite "pinless" piston option, I think it would be cool to find a good pinless piston and put it in a XL saw. I know Homelite used the pin to stop the piston crack/opening from hitting the transfer ports and/or exhaust port edges thus potentially causing damage. However, if the string trimmer worked out okay (  ?). Then what is good for the goose should be good for the gander. Perhaps someone out there will give it a try. I do not personally own an XL or I would give it a try upon finding a good pinless piston. In my opinion, while the pin may limit down the road potential damage, it definitely causes "blow by" on the piston causing loss of compression. Add to that, these smaller saws only have one piston ring which only adds to the compression loss. I know, these saws have a lower compression range via the service manuals ( e.g., 135 PSI) but why not try for a higher compression if all you need to do is swap out a piston and ring during a rebuild.... Just a thought. |
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Post by charliec on Sept 14, 2023 9:59:27 GMT -5
OOOps, my bad, The IPL I posted does show that the UT 10655 (XL saw) did have a pinless option. Therefore, anyone doing a rebuild with a bad piston may want to consider finding a pinless cylinder as a replacement... Just a thought.
Has anyone had a good or bad experience with a pinless piston in a Homelite product?
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?). Then what is good for the goose should be good for the gander. Perhaps someone out there will give it a try. I do not personally own an XL or I would give it a try upon finding a good pinless piston.