HeRoze
Addicted to ArboristSite
That looks depresingly like teh 640 that started me down this whole journey. Thanks for the motivation to get back on that one. Hopefully after taxes are done.----
McCulloch Chain Saws
- Thread starter Bruce Hopf
- Start date
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diggers_dad
Sawchologist
Mac 1-50?
The cover plate is worn badly, but I think this is a Mac 1-50. From what I have been able to find it is an 80 cc torque monster. Can any of you Mac guys tell for sure if it really is a 1-50? It has great spark in addition to the 160 psi compression. One of the bar bolts appears to be broken off.
Any help appreciated.
dd
The cover plate is worn badly, but I think this is a Mac 1-50. From what I have been able to find it is an 80 cc torque monster. Can any of you Mac guys tell for sure if it really is a 1-50? It has great spark in addition to the 160 psi compression. One of the bar bolts appears to be broken off.
Any help appreciated.
dd
paccity
Addicted to ArboristSite
looks like a 150 stamped on the bottom to me.
promac850
formerly promac610
Picked up NOS piston rings for one of the 850 engines that I will be rebuilding later on.
Mark, if you could get the SKF or whatever brand numbers off of those 10 series crank seals you have, I'd appreciate it. I plan on ordering a couple sets from a nearby bearing house soon. I think the seals in my first 850 rebuild are done for good now. It runs fine in the normal firewood cutting position, but will pick up idle speed when tilted clutch side down. Flywheel side down, it'll slow down a little bit.
While I'm in there (will be done after I get one of the triplet 850's rebuilt and cutting) I will also be doing away with the Permatex Ultra Grey and using Threebond 1194 to seal the halves, as well as the OD of the crank seals. Otherwise, I will continue to cut firewood with it unless something real serious pops up, like consistent or intermittent lean moments. Maybe have someone weld a small pop up on the piston while it's apart...
Mark, if you could get the SKF or whatever brand numbers off of those 10 series crank seals you have, I'd appreciate it. I plan on ordering a couple sets from a nearby bearing house soon. I think the seals in my first 850 rebuild are done for good now. It runs fine in the normal firewood cutting position, but will pick up idle speed when tilted clutch side down. Flywheel side down, it'll slow down a little bit.
While I'm in there (will be done after I get one of the triplet 850's rebuilt and cutting) I will also be doing away with the Permatex Ultra Grey and using Threebond 1194 to seal the halves, as well as the OD of the crank seals. Otherwise, I will continue to cut firewood with it unless something real serious pops up, like consistent or intermittent lean moments. Maybe have someone weld a small pop up on the piston while it's apart...
Mark, that makes three of us (Aaron, Kyle and myself) looking for a number so we can avoid OS seals. I hope you can help.
Kyle, looks like you may need to change your username to promac850. I'm glad the first one is still running. If you run across Jacob (ChainsawmanXX) tell him I'm going to repossess the SP81E, if he doesn't get it going soon.
Aaron, ditch the two part ignition and replace it with its replacement single unit. Let me know if I need to look for one for you.
Ron
diggers_dad
Sawchologist
I don't want to look like more of an idiot than I am, but...
Where on the bottom? I'm not seeing it.
promac850
formerly promac610
I was wondering what happened to Jacob. Hope he didn't wind up in a bad spot between a rock and a boulder or something. I was a bit harsh on him a couple of times. Hope that didn't get taken too personally.
I think you're right about the username change... it's time now that there are four of them...
I say let's shift the responsibility to Joey, he is coming for a visit on Friday, I'll have the computer going in the shop, perhaps between the two of us we will remember to track them down.
I have a pretty good supply of NOS seal so I don't really need the crossover, I think Struggle already has done this as well.
Somehow we ought to be able to get the information collected and posted.
dad - look again at the bottom of the saw, the Model number is stamped on the left side of the "T", the serial number on the right side. With the top styled after the D-30 and D-36 plus the full wrap handle, chances are it is in fact a 1-50. Check to see if there is a plate separating the fuel tank from the front "oil" tank, I think you will discover it is all one large fuel tank and the chain lubrication is via crank case oil residue being forced through some passages onto the chain. Notice the plug with the slot at the bottom of the "T", underneath are a spring and disc check valve for the "automatic chain oiler".
Mark
I have a pretty good supply of NOS seal so I don't really need the crossover, I think Struggle already has done this as well.
Somehow we ought to be able to get the information collected and posted.
dad - look again at the bottom of the saw, the Model number is stamped on the left side of the "T", the serial number on the right side. With the top styled after the D-30 and D-36 plus the full wrap handle, chances are it is in fact a 1-50. Check to see if there is a plate separating the fuel tank from the front "oil" tank, I think you will discover it is all one large fuel tank and the chain lubrication is via crank case oil residue being forced through some passages onto the chain. Notice the plug with the slot at the bottom of the "T", underneath are a spring and disc check valve for the "automatic chain oiler".
Mark
promac850
formerly promac610
Funny how a bunch of us are rebuilding 82cc Macs around the same time...
Alright M... err, Joey. Don't forget to get us some numbers...
or we'll throw you in the brig of RandyMac's pirate ship. ARRRRR!
You guys have no idea how much I say ARRRR! nowadays... and yes, it's real. Crawling through the attic, I'll be repeating it as I crawl... getting up from the couch, I'll say it. My brother keeps telling me I sound like a pirate.
Think I might have to acquire meself a bottle of rum on my birthday...
Alright M... err, Joey. Don't forget to get us some numbers...
or we'll throw you in the brig of RandyMac's pirate ship. ARRRRR!
You guys have no idea how much I say ARRRR! nowadays... and yes, it's real. Crawling through the attic, I'll be repeating it as I crawl... getting up from the couch, I'll say it. My brother keeps telling me I sound like a pirate.
Think I might have to acquire meself a bottle of rum on my birthday...
HeRoze
Addicted to ArboristSite
cpr
Addicted to ArboristSite
Looks like 1-50 to me. I see a head gasket, so should be the real deal.
cpr
Addicted to ArboristSite
Some will some won't due to bolt spacing. A 101 head won't go in there, for instance.
I have a couple of MC-10 heads that I want to put on a 1-70 (ported, of course) when I get around to it. They're smaller compression volume, but the plug is in a different place so I have to either hack the hood, or use a hood and handle from a D-44.
I have a couple of MC-10 heads that I want to put on a 1-70 (ported, of course) when I get around to it. They're smaller compression volume, but the plug is in a different place so I have to either hack the hood, or use a hood and handle from a D-44.
cpr
Addicted to ArboristSite
Same. I'll post the PN when I get home later...
S44A, 1-70, 1-71, 1-72 can all take that as it is the saw-block version of the MC-10. I think it will fit on a S44 and D44, too. I never took the heads off my D44 when I had them, but the extrior appeared the same. Knowing McCulloch though, the bowls could have been ANYTHING!
S44A, 1-70, 1-71, 1-72 can all take that as it is the saw-block version of the MC-10. I think it will fit on a S44 and D44, too. I never took the heads off my D44 when I had them, but the extrior appeared the same. Knowing McCulloch though, the bowls could have been ANYTHING!
Also, let the Big Boys get a little sunlight....
View attachment 285432
The others were jealous...:hmm3grin2orange:
-Andy
View attachment 285432
The others were jealous...:hmm3grin2orange:
-Andy
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promac850
formerly promac610
Nice spark plug/air shroud/hood/bonnet you got there minosi. Same goes for the SP and the PM1000...
While we're all thinking about 82cc Macs, anyone pay any attention to what they went for over the peak Mac selling season this year, on fleabay? Just curious.
While we're all thinking about 82cc Macs, anyone pay any attention to what they went for over the peak Mac selling season this year, on fleabay? Just curious.
paccity
Addicted to ArboristSite
sorry for getting back late but some work had to be done. like where herose circled wipe the oil off and the rest of the number will show. i can make out a 50 so like every one else answered and by what mine looks like it's prob an1-50.
'
homelitejim
Full of Scrap
Dang man did they let you out on a day pass? You should probably stay out of those political threads, I do not want to go to camp so I stay far away, the FB is where I unleash my furry.
