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Post by sweepleader on Jan 6, 2018 17:15:15 GMT -5
I should not have used the term "pressed" when describing them, seems to have been misleading. They are a slip fit to the best of my knowledge, no serious tools involved to install or remove. Sorry.
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Post by Deleted on Jan 6, 2018 18:17:46 GMT -5
I apologize I was referring to how the buttons are used in auto engines. I don't have a 2000 piston to look at but I have a SXL925 and a XL923 and the button is held in by a circlip. Also there isn't a button on the opposite side. I believe once you pull the cylinder off you would remove the pin from the non button side. The button is used to seal the crankcase from the exhaust. I doubt if you would have to replace the button as it isn't a wear item on a saw. Okay, no removal info, because they are basically self removing, lol, like carb springs.
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Post by tjthechainsawmech on Jan 6, 2018 21:05:08 GMT -5
The XL-113 & XL-114 had some variations that used these plugs as well. Not common in the Homelite line though. Hey Leon, is there a chance I could pick up those rings from you this Monday? I'll be in the GP area and figured I'd bring some saws.
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Post by tjthechainsawmech on Jan 6, 2018 23:25:14 GMT -5
WELL....my parts saw showed up....runs like a champ.....pulled the cylinder and found that most of the plating on the front of the cylinder wall is gone. That had me a little po'd, but oh well. Can't really blame the seller as it was a running saw just like in the discription and dingdong me didn't ask for inside pictures. AH well! Have another 775d that is in great outside shape. Things runs really well to. haha
SO, being sick and tired of looking for a dang cylinder...and finding outrageously priced parts saws....I took the old one and "fixed it"
In the previous pictures you could see the broken port.....figured well...I have a running "parts saw" let's experiment. Cut all the damaged wall off....filed the edges down....sanded them smooth...put the cylinder on the parts saw...fires and runs like a champ. Have yet to see if the rings don't like it. So far I can't see any reason to worry. Gonna pull it on Monday and hone it real good again. Should have this ol 770 up and going once more. Ain't exactly how I like it, but I don't want the saw down for years trying to find a decently priced saw for parts.
Scheduled a trip to visit Leon on monday to pick up rings and checkout/show off saws. Lot's o fun ahead!
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Post by sweepleader on Jan 7, 2018 12:32:56 GMT -5
Honing a chrome lined cylinder could remove the lining and leave you with lots more bare aluminum. Honing will not replace missing chrome only remove more. The engine would not last long, be very gentle with the hone. There are places that can repair these cylinders but due to a computer crash, I have lost my links. It is pretty expensive.
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Post by tjthechainsawmech on Jan 8, 2018 22:24:38 GMT -5
Honing a chrome lined cylinder could remove the lining and leave you with lots more bare aluminum. Honing will not replace missing chrome only remove more. The engine would not last long, be very gentle with the hone. There are places that can repair these cylinders but due to a computer crash, I have lost my links. It is pretty expensive. I only made 3 passes with a ball hone the 1st time. And I was using wd-40 as well. Gonna try 1 or 2 this time and most likely call it good. Met Leon today and we chatted for awhile. Got to see some of his saws....3 restored ones as well. Did a hell of a good job on them for sure. Should have this saw running tomorrow evening! Leon gave me a can of green so I'll be repainting the green parts to make it more original. Super excited to have this thing running again.
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Post by onlyhomelites on Jan 8, 2018 23:42:47 GMT -5
It was good chatting with you today TJ...can't wait to see the 770 running again!
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Post by tjthechainsawmech on Jan 9, 2018 0:57:04 GMT -5
Thanks man! Plans changed and I heard the saw fire this evening. Decided not to re-hone the cylinder as there was plenty of cross hatch left and like Sweepleader mentioned....probably do more bad than good. Put most of the beast back together this evening...she's got good compression again. lol Not Quite as much as the first time but the rings haven't seated yet. Fuel in the tank turned old on me so she didn't want to fire. Letting it siphon out tonight and I'll put some ethal free 110 mixed at 32:1 in there tomorrow morning....if she don't fire on that we gots Real problems. haha Fingers crossed....other saw ran with the open port so hoping this one will to.
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Post by tjthechainsawmech on Jan 9, 2018 20:37:57 GMT -5
WELL my luck with this saw is just about as bad as you can get....putting it in a box and not looking at it for awhile. Casting failed where the threads were cut for the s/p....no the plug was not cross threaded.....this time toasting the cylinder And another brand new piston and rings. GRRR. lol First saw I have ever rebuilt that's kicked me in the nuts so many times. One day I'll be successful but not right now. Can't afford more $200 fricken old parts saws for a worn out cylinder. This project is going on hold for awhile guys. Gonna work on the others for awhile.
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Post by sweepleader on Jan 9, 2018 20:47:52 GMT -5
Man, that is a sorry situation. Damn lot of faults for one saw. I still think it will be good one day.
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Post by tjthechainsawmech on Jan 9, 2018 20:51:11 GMT -5
Man, that is a sorry situation. Damn lot of faults for one saw. I still think it will be good one day. Course it'd be my favorite out of the bunch to. haha Ah well, there's always that one. There's a couple 775d's on ebay so I may see about getting better pricing on those. Also going to contact a few plating companies and get some quotes. Have 2 cylinders that can be plated so I may just do that since the price of a saw is around the same.
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Post by jerseyhighlander on Jan 9, 2018 20:52:06 GMT -5
WELL my luck with this saw is just about as bad as you can get....putting it in a box and not looking at it for awhile. Casting failed where the threads were cut for the s/p....no the plug was not cross threaded.....this time toasting the cylinder And another brand new piston and rings. GRRR. lol First saw I have ever rebuilt that's kicked me in the nuts so many times. One day I'll be successful but not right now. Can't afford more $200 fricken old parts saws for a worn out cylinder. This project is going on hold for awhile guys. Gonna work on the others for awhile. Man, that's harsh. Been there too many times myself. Look forward, it will pass. Go play with some of the recent successes for a while & decompress.
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Post by jerseyhighlander on Jan 9, 2018 20:54:03 GMT -5
Man, that is a sorry situation. Damn lot of faults for one saw. I still think it will be good one day. Course it'd be my favorite out of the bunch to. haha Ah well, there's always that one. There's a couple 775d's on ebay so I may see about getting better pricing on those. Also going to contact a few plating companies and get some quotes. Have 2 cylinders that can be plated so I may just do that since the price of a saw is around the same. Maybe invest that cash into the equipment to do the plating yourself... It really isn't that hard, especially with small parts.
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Post by tjthechainsawmech on Jan 9, 2018 22:38:50 GMT -5
Course it'd be my favorite out of the bunch to. haha Ah well, there's always that one. There's a couple 775d's on ebay so I may see about getting better pricing on those. Also going to contact a few plating companies and get some quotes. Have 2 cylinders that can be plated so I may just do that since the price of a saw is around the same. Maybe invest that cash into the equipment to do the plating yourself... It really isn't that hard, especially with small parts. Never thought of that. I'll check into it.
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Post by sweepleader on Jan 10, 2018 10:45:22 GMT -5
I don't know what the costs involved are related to plating yourself, or what the success rate might be but maybe, selling them repaired could pay for some of your trouble...
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Post by sawnami on Jan 11, 2018 8:22:46 GMT -5
Regulations on handling and disposing of the waste from the plating process has put a lot of plating companies out of business. I found that out when looking for a company to replate the bumpers on a 39 Ford restoration. The regulations might not be as bad for a small scale generator.
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Post by charles on Jan 11, 2018 16:14:53 GMT -5
Is sleeving the cylinder an option using DOM tube ? Bore the cylinder , press in the sleeve , hone to size and cut out the ports . Not sure how one would
anchor the sleeve , but could be done , especially on a "play" saw
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Post by Deleted on Jan 11, 2018 16:26:17 GMT -5
Regulations on handling and disposing of the waste from the plating process has put a lot of plating companies out of business. I found that out when looking for a company to replate the bumpers on a 39 Ford restoration. The regulations might not be as bad for a small scale generator. I wonder if a Gun shop could give you numbers of places that do small chrome plating?
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Post by sweepleader on Jan 11, 2018 20:16:02 GMT -5
Is sleeving the cylinder an option using DOM tube ? Bore the cylinder , press in the sleeve , hone to size and cut out the ports . Not sure how one would anchor the sleeve , but could be done , especially on a "play" saw I think that is possible, I am sure that is how some are repaired professionally. I am still working on recovering files from a crash last week, somewhere in there is a site with a good pictorial on doing just that. I think an hobbist with a mill or a lathe could do it too. If the press was correct there would not be a need to anchor further. The sleeve could be Loctited in place or pinned too.
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Post by tjthechainsawmech on Jan 18, 2018 20:39:34 GMT -5
Well a member off another forum saw the need I had for a cylinder and piston....he offered up a 775d he had sitting around for a way fairer price than I have been paying. Had him check the cylinder walls best he could for me and they seemed fine. Saw arrives today and has good compression....Good compression actually. lol Visible scoring on the back wall but nothing that grabs a sharp pick so fingers tightly crossed on this one. Gonna tear it down tomorrow and hope for the best...if ok I'll take the piston and cylinder off of it and salvage a couple rings and hopefully have this dern 770gs running again....if I can run it 5 minutes I'll be happy enough to dump the fuel and display it knowing it runs. haha
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