MCCULLOCH The official McCulloch thread

[Bigmac]

Me too!

View attachment 124962

Me three! lol

 

[Drptrch]

[emoji106][emoji106] Nothin to see behind the bar


Erik

 

[Bigmac]

Wanted to get your guys vote on this....what decal would you put on this cover, it’s a cp125 cover but I am putting a 101 build, do I run a cp125 or sp125c, I have seen more with sp125c sticker in my research, what do you think?
And this back shroud
And this recoil

Or this one

 

[Lee H]

Since your using CP components I would go with a CP decal. But I have been
thinking about having some custom made 101 decals for the saws.

 

[Lightning Performance]

The SP70 is hurt as I thought. The piston shows scars toward the muffler. Unbolted the carb and set it askew to see the intake skirt at bdc. The skirt is nice but at bdc it shows a fresh shiny scar just under the rings. It needs be torn down.
Everything is dry. Straight gassed is my bet. The plug is dry but was run before and had good color with no transfer. The jug looks good through the spark plug hole. The muffler is all dried out.
I'll check the carb setting to see if it was leaned out and over-revved but doubtful.

Quote from the seller. "It ran two years ago."
That was half a sentence. The rest is, "until I straight gassed it and smoked the motor."

 

[Lee H]

That sucks.

 

[Lightning Performance]

Fuel is straight, no oil. Just tested it.

Are these chrome or Fe liners?

I think it is a 1976-7
Saw model numbers is 600443E
Serial 11- 10630

 

[PogoInTheWoods]

Chrome plated bore.

 

[Bigmac]

Since your using CP components I would go with a CP decal. But I have been
thinking about having some custom made 101 decals for the saws.

I was thinking the cp to be more original, but a custom one would be cool too...sp101b

 

[Bigmac]

The SP70 is hurt as I thought. The piston shows scars toward the muffler. Unbolted the carb and set it askew to see the intake skirt at bdc. The skirt is nice but at bdc it shows a fresh shiny scar just under the rings. It needs be torn down.
Everything is dry. Straight gassed is my bet. The plug is dry but was run before and had good color with no transfer. The jug looks good through the spark plug hole. The muffler is all dried out.
I'll check the carb setting to see if it was leaned out and over-revved but doubtful.

Quote from the seller. "It ran two years ago."
That was half a sentence. The rest is, "until I straight gassed it and smoked the motor."

That’s a bummer!!

 

[Lightning Performance]

That sucks.

Not really. I'm happy to get a complete saw missing one screw. Found one spot missing in the chip screen. New Ebay 35 bucks.

This just, just opened the door to mods

So, does the 81, 850 or other fit in my chassis?
Remember I'm McCULLOCH ignorant but not stupid.

The juice needs to be worth the squeeze. It's all or nothing. Not building a BB that lacks in carb, intake and exhaust just to have a BB. That would be stupid.

 

[PogoInTheWoods]

Lots of interchangeable parts among the 10 series Macs. I posted a couple IPL's. Here's a link to a few more. Do some homework.

http://www.mymowerparts.com/pdf/McCulloch-Parts-Service-Repair-Manuals/Gas_Powered_Chain_Saws/

Lots of folks would say there's not a lot of gains to be realized in what are already inherently good designs among the 10 series saws.
Some will argue about that. The big saws are a whole different story.

If it were me, I'd keep it a SP70 just because it's a SP70. You want a PM850 or SP81? Get a PM850 or SP81. Be easier than jumping through the hoops to convert an SP70 unless you're lucky enough to run across an nice SP81 shortblock (and have deep pockets). Plus you may be able to get away with just a piston and rings, or maybe even salvage the piston and get by with a set of rings if you wanted to keep it original. It's pretty amazing what a Mac will tolerate when it comes to that stuff. Hell, that saw probably cut all day with straight gas in it and may even start right now if you shot some mix into the carb.

BTW, Mark H. has some nice chip guards available that he had made via a 3D printer. Pretty sure they're pretty reasonable.
Paying 35 bux for one WOULD be stupid..., especially when complete 10-10's with chip guards usually sell for less. LOL

Good luck with it. And if you start getting bored with it? Be happy to take it off your hands.

 

[PogoInTheWoods]

Wanted to get your guys vote on this....what decal would you put on this cover...

What did you use for paint on that cover? And is the texture from the paint, or in the casting of the cover? I've noticed variations among covers..., smooth and textured. Wouldn't think there were different molds just for that, but maybe so?

 

[Lightning Performance]

Lots of interchangeable parts among the 10 series Macs. I posted a couple IPL's. Here's a link to a few more. Do some homework.

http://www.mymowerparts.com/pdf/McCulloch-Parts-Service-Repair-Manuals/Gas_Powered_Chain_Saws/

Lots of folks would say there's not a lot of gains to be realized in what are already inherently good designs among the 10 series saws.
Some will argue about that. The big saws are a whole different story.

If it were me, I'd keep it a SP70 just because it's a SP70. You want a PM850 or SP81? Get a PM850 or SP81. Be easier than jumping through the hoops the convert an SP70 unless you're lucky enough to run across an nice SP81 shortblock (and have deep pockets). Plus you may be able to get away with just a piston and rings, or maybe even salvage the piston and get by with a set of rings if you wanted to keep it original. It's pretty amazing what a Mac will tolerate when it comes to that stuff. Hell, that saw probably cut all day with straight gas in it and may even start right now if you shot some mix into the carb.

BTW, Mark H. has some nice chip guards available that he had made via a 3D printer. Pretty sure they're pretty reasonable.
Paying 35 bux for one WOULD be stupid..., especially when complete 10-10's with chip guards usually sell for less. LOL

Good luck with it. And if you start getting bored with it? Be happy to take it off your hands.

Um bored, no. This saw is worth fixing. The jug does not look like chrome. A bore camera will tell the tale when it gets looked into this week.

Is that lil red barn stuff any good? Just asking

I want a 125 but I don't want a busted up basket case.

Hunted for an 850 and SP81 for too long. One should show up next week now the 70 is here.

I'm real good with acid, aluminum and chrome. Melted many several times.

 

[Lightning Performance]

What did you use for paint on that cover? And is the texture from the paint, or in the casting of the cover? I've noticed variations among covers..., smooth and textured. Wouldn't think there were different molds just for that, but maybe so?

Noticed that myself. Looks like textured paint. Whomever does powder coat might know.

 

[Bigmac]

The cover is smooth, etching primer then I used stone/rock guard, (its an automotive product for protection and rockers, and single stage Napa automotive paint. This was the first time I tried it on a saw, I like how it turned out, it looks pretty original, and should be durable

 

[PogoInTheWoods]

I've heard less than steller reports about LRB Mac repops...., fwiw. Think it may have been a guy here who had some not so good luck with wrist pins staying where they belonged. I'd stay OEM myself, but that's just me. That said, I wouldn't pay Randy's Engine Repair prices either. Keep your eye open for a beat up PM700. May get lucky there.

Hunted for an 850 and SP81 for too long. One should show up next week now the 70 is here.

Isn't that always how it goes? LOL

 

[PogoInTheWoods]

The cover is smooth, etching primer then I used stone/rock guard, (its an automotive product for protection and rockers, and single stage Napa automotive paint. This was the first time I tried it on a saw, I like how it turned out, it looks pretty original, and should be durable

It looks real good. So it's a coating that goes over primer before the finish paint?

 

[Bigmac]

It looks real good. So it's a coating that goes over primer before the finish paint?

Yes exactly, it’s in a spray can and you let it flash then top coat. When I was resorting my car,( I was using the corner of a body shop) he used it an cars and trucks it match the textured finish the factory puts on the lower rocker panels to help with rock chips.

As a side note I have noticed that most of the factory black textured parts have had flaws in them under the factory paint, I am starting to think that Mcculloch used the textured to cover casting flaws, most of the yellow parts looked higher quality...just an observation

 

[PogoInTheWoods]

Gotcha. Thanks for the clarification.