Pro Mac 10-10 Mod, The HACK-10 Project

Who doesn't like a hot rodded chainsaw? This old Pro Mac 10-10 was in need of a revival and ripe for modifications! I also needed a saw with a longer bar, so adding a little more power would help with pulling more chain. Picked the saw up for $20, sometimes the cheapest ones cost you the most...
Once getting into the guts of the engine I found some unique porting configurations, not what one normally sees in a snowmobile or dirt bike. Seems that chainsaws like this have some unique parameters to work around, mainly lack of a tuned exhaust and a need for low end torque. These pro mac saws are already a pretty hot saw from the factory, the carburetor is huge for a 54cc saw as is the intake! The exhaust was the most restrictive part of the setup, which is where we concentrated our efforts on.
I may actually tear into it again at some point, didn't go too crazy with extending transfer or exhaust durations, you can always take away more material later on! Timing changes are also worth looking into more. But that was the point of this project, to get into something that is a bit unknown and have some fun learning.

[@ziptiesnbiasplies]

Great Vidya bud! A two beer production fur sure!

[@toocheaptosmoke]

Thanks man, I can tell ya, more than two beers went into the production on my end! lol

[@ziptiesnbiasplies]

@@toocheaptosmoke I fuckin hope so! That was some creative engineering!

[@seang.4533]

Thanks a fuckton for recommending this guy on your instagram, this is the kind of content I like to see on here

[@bansheemania1692]

Van van van van van van van van van van van van van van van van van 🔥🔥🔥🥃🥃🥃

[@eugenefredrickson8714]

Mac 10's exhaust drops out and takes a 90 degree turn betweenst the jug and skid plate and then another 90 before deflecting into the atmosphere. I still haven't figured out a practical way to open this up. I feel it would be a significant improvement in power and cooling.. Sure as shit couldn't hurt. T.C.T.Smoke.. Love your vids.. K

[@BigBeavrSlayer]

Buckin and bellhopper would absolutely approve of this, just because you brought another good ol mac back from the dead 👍

[@wisheye1]

One extra bolt is probably the bolt inside the oil tank that attaches the front end of the fuel tank to the oil tank. Nice build, port mapping was very interesting.

[@kellyblack4897]

It’s notable that dead seasoned wood is the toughest for any saw. This beast makes it look easy!

[@hog1450]

That saw is a beast, Glad to see a new upload! Really enrichens daily life

[@toocheaptosmoke]

Thanks, glad to hear!

[@Jethrosgarage]

Thanks, I'm now down a multi video Buckin Billy Ray rabbit hole.

[@xnotx2]

Cool design of the transfer ports.

[@65bug519]

my old mac is still my go to saw

[@toocheaptosmoke]

Just cut up a bunch of cherry the other day with mine too.

[@danielschneider6720]

One of the best videos I’ve watched on You Tube!!! Excellent.

[@toocheaptosmoke]

Thanks man!

[@kellyblack4897]

With that white oak being so long dead, that’s a lot meaner cut than many might think! That lil saw is really bringing the pain

[@toocheaptosmoke]

That's a good point!

[@oldsledpurgatory3595]

That might be the world's first bridge-ported 2 stroke: now try peripheral-porting a steam engine. Love the vids, man. Nice tutorial on 2 stroke ports.

[@toocheaptosmoke]

Will have to look into those, never heard of them. There are some bridged exhaust ports out there, the L/C honda 250R I think used them, but you had to clearance the bridge extra or it would scuff pistons.

[@newstuffsucks...5754]

Those 10’series macs are awesome saws. I had a sweet 7-10, and a PM 800. Lots of compression, not bad to mechanic on. The reed valve mufflers are neat too.

[@toocheaptosmoke]

Working on 700 now for a friend, they are good saws.

[@joedyer8824]

Nice job on the saw I am sure bell hopper would approve and iron horse

[@chrisweiss6363]

Buckinnnnn!!!! Be kind out there ok.😁✌️ Extra bolts just means you're being efficient.

[@jdullemond]

Hell of a good job sir... Well done I love your videos

[@toocheaptosmoke]

Thank you very much!

[@mnmarlin6074]

Great work! To be honest I didn't think it would run when you were done, you proved me wrong. It seems to be pretty strong too for just over 50cc to pull a 28" bar in oak!

[@toocheaptosmoke]

Thanks! I was a little bit concerned at times, but so far so good. But what's that saying, if it's not broken fix it 'til it is?

[@jayjay-xz9sc]

Nice job on the saw sounds good!

[@toocheaptosmoke]

Thanks man, I love the sound and so do all the neighbors!

[@persson882]

great vids :) love em!

[@toocheaptosmoke]

Thanks man!

[@waggitnshaggit6592]

That was totally cool and my favorite Mac for firewood.

[@toocheaptosmoke]

Thanks man, it's a fun saw!

[@davekimbler2308]

I seen where you got your saw sawn slices away from the sea shore ! Superbly shown , smashingly seen showing saws superb slices ! That was a mouthful , now say that 10 - 10 times Mac ! Lol !

[@toocheaptosmoke]

I had to read that two times to understand it too! haha

[@davekimbler2308]

toocheaptosmoke I was just in one of those funky moods ! I do like your aptitude for simplifying a situation ! Lol. Ah shit here I go again ! Lmao

[@michiganporter]

Ur a damn genius broski! Tip of the hat to ya sir! Thanks fer the vidjas your the man!

[@toocheaptosmoke]

Haha, appreciate it man!

[@weets69]

Now that’s a true junk yard dog. I want it. Great vid.🤟

[@timfogle7337]

Finally!!! Been waiting for you to post another video lol

[@toocheaptosmoke]

Haha, yeah, I know it's been a while, too many other things going on! Thanks for watching.

[@georgeburch1479]

I got same saw and absolutely love it and yea loud as could be

[@toocheaptosmoke]

The saw you and the entire Township can enjoy!

[@wisheye1]

Awesome!😎

[@aeridyne]

Nice work! And some good chuckles in there as well! I'll be really curious to know how that little red barn piston holds up over time. Adding the pins was really cool, I didn't know pistons without pins was even possible.

[@toocheaptosmoke]

Thanks! Would have preferred an oem piston, but didn't have any luck finding one.

[@bobg3034]

Nice!

[@dennislorden3142]

Saw zip ties Instagram post and subscribed, I watch buckins channel too so this was cool to see

[@toocheaptosmoke]

Awesome, glad to hear!

[@garrettlee4293]

those exhaust ports are set up to cause the fuel and air to spit therefore mixing like the vortec set up

[@davedemo8229]

that crank seal is fine just add some rtv. its been too long. glad to see another video. grass drags?

[@toocheaptosmoke]

Haha, only if you use the whole tube of RTV!! Hopefully grass drags, quite a few have already been canceled for this season. :(

[@Syncop8rNZ]

Nice saw. Not quite how I would do things but entertaining nonetheless. Did you move the choke to halfway when it started trying to fire?

[@toocheaptosmoke]

Yeah, usually once it pops on full choke, I turn the choke completely off. Sometimes gotta feather the throttle once it starts, but that's just how I do it.

[@Dsdcain]

Yes Mr. toocheap delhi guy, I'd like my oak sliced kinda on the thin side, thanks. *:-)* Man you may not have uploaded a video in awhile, but it was worth the wait. Over Half an hour. Frickin great project to show. I was wondering if your method of remembering projects in the back of the barn were the same as mine. Is it when you go to get something else and trip over what you stored there, or do you just happen to remember? My method is to trip on something stored and remember "Oh yeah, I was gonna fix that." Then grab some beers and start working. *:-)* Thanks for the vid.

[@toocheaptosmoke]

That definitely happens at times, haha. Usually I just wait until I actually need to use something, then that forces my hand and I've gotta fix it.

[@iraagans3144]

Ok so I'm curious, how's the torque? I noticed you keeping the spike off the log. I'll run full comp 24" on a decent 10-10 without any issues so I'm interested if its that big of a performance boost?

[@toocheaptosmoke]

Unfortunately I haven't ran a good running stock saw for comparison. If I had used the dogs on that oak it would bog it down, I tried some softer wood you lean on it a lot more. My saw seems to have two sweet spots for cutting, one lower rpm where it's torque is strongest, but also higher up where it likes to rev. Something in the timing or porting may need tweaked, I never had a saw with such a wide range of cutting rpm?

[@iraagans3144]

@@toocheaptosmoke if its still a points saw you can get a few degrees of advance there.

[@stevenkinnison8044]

I just picked up my first 10-10 a couple days ago that's gonna be a project saw.

[@toocheaptosmoke]

Nice, they are cool saws!

[@adrianbadea1179]

When the fuel line was a hose ...😲 Before adding plastic in the fuel line you should check the plastic if does melt in the petrol...I did use some plastic elbow to connect the fuel line... After 10 minutes it clogged the fuel line with melted plastic 😟 and no connection...

[@toocheaptosmoke]

The plastic line was high pressure fuel injection line, so hopefully it should be fine, haha. But yeah, especially with today's ethanol fuel you gotta really watch what you're using.

[@jbplays7302]

This is the best video I've seen on a PM 10-10 yet!! I've got an old one, that's identical to your collectors item 10-10, except mine's used, like the one you ported in this video. And I have the same problem with mine that you had with yours. The piston looks like it's in good condition, but the rings have too much of a gap, and the saw doesn't have much compression at all. I can BARELY get it to crank. And, as you found out, it's damn near impossible to find a set of OEM rings for 1 3/4 inch mac piston. When you got the aftermarket piston kit (the same one I found on ebay), were the gaps closer to what they needed to be? Thanks in advance!!!

[@toocheaptosmoke]

Thanks for watching! I can't recall the exact end gaps, but they were definitely way closer to spec than the old ones, haha. It's surprising that certain parts like that arent easier to find.

[@jbplays7302]

@@toocheaptosmoke I agree 100%! The 10-10's are one of the most popular saws in some areas of the country. And I'm sure there's thousands of them out there with scored pistons and cylinders, that are just sitting in people's garages, because they wont crank. And these saws are much better quality than a Stihl or Husqvarna homeowners saw. And MUCH easier to work on! So, I wonder why good aftermarket p/c kits aren't available for these? I'm going to order one of the piston kits like the one you bought, and bring this old saw back to life. And I'll probably put some new seals, gaskets, and a carb kit on it as well, just because... Maybe some day I'll get the kuhonis swollen enough to attempt a port job..?? Thank you for the reply! Have a GREAT WEEKEND, my friend!!!!

[@SheepofTheShepherd-nu3lz]

That's what I did with my ol 10-10 Put a 28 oni it and ran it the way it was, at one time I had 3 old Mac's The 10-10(28") SP125(42") And a junky 610(16 but used the 28 for sawmill) And then sold all of them. The 28 was the largest bar you could run with the 10-10 3hp engine

[@toocheaptosmoke]

Nice! They are cool old saws.

[@SheepofTheShepherd-nu3lz]

@@toocheaptosmoke Back in the late 90s and early 00s, I had a tree service business Used cheap saws and always wanted the Mac's and Homelites It became a hobby after I moved back to my home state Found the 10-10 with a spare saw Then found the SP125 It was my show piece And I was using the 610 and 10-10 as a sawmill attachment, and then lost my job, had to sell the saws But that's ok, God touched me with Truth and I don't really care about that anymore Jesus is coming soon and we need to be prepared A great starvation is coming and only the strong will survive Many people are going To die No vaxx Revelation 21: 8 And Matthew 24 The time is drawing near, Repent and Believe the Gospel and Seek God's forgiveness before it's too late

[@VicsYard]

Niceeeeeeeeee!!!!!!

[@benhuckabone9675]

where did you get the "barn fresh racing" sticker on the tool box? I want one

[@toocheaptosmoke]

I make those, haha. Maybe have to get a big batch made and get them available at some point, thanks for watching!

[@summitlt]

Sent her from the old peg. Love them old macs, got a 1-40 myself. 80cc of 6000rpm. Cool saw, not as cool as a 1010 though.

[@toocheaptosmoke]

Cool, those 1-40's are definitely an oldie!

[@johnsontracy5568]

Working on a 1-40 atm! Love it, one heck of a saw.

[@justinstearns9723]

I knew they had goofy porting but I didn’t know about the hemispherical combustion chambers. Guess I’ll have to tell people I have Hemi chainsaws now.

[@toocheaptosmoke]

Haha, that will definitely make it cut faster as well!

[@tannerthomas9052]

Did you change the clutch I can't find a newer chain that will work on my 10-10 wanting a 28 inch Oregon bar but the chain doesn't fit properly on the clutch

[@toocheaptosmoke]

I believe it was just the regular clutch that was on it?

[@clatechilders856]

I have the same saw I’ve been messing with, did you find out if there is supposed to be two plates beside the bar at 4:05? Mine only has one. Thanks

[@toocheaptosmoke]

I've been running it with just the one, so far so good, haha.

[@clatechilders856]

Ok I have been too but it seems to be leaking a little more oil than it should and I just wondered if I was missing a part

[@meesters52]

Talk to us about the bar! What modifications to the bar to make it work?

[@toocheaptosmoke]

Nothing really, it's a bolt on kit, you can get the chain and bar combo together, just need to figure out what type of chain you want.

[@meesters52]

@@toocheaptosmoke Thanks for the reply buddy!

[@joeysuntrup2633]

What Oregon bar you have one there. Model number?

[@iraagans3144]

The Oregon bar mount is D176

[@danielsmith8659]

What will happen if your ring gaps are lined up with the transfer ports

[@toocheaptosmoke]

On the small narrow transfer ports the ring ends just bridge the gap and are fine. On a wider ports the ring ends squeeze out of the piston and can catch, either breaking the ring or causing accelerated wear.

[@deanferries7766]

Needs a bigger bore carburetor to keep up with the freeyer flow

[@toocheaptosmoke]

Probably wouldn't hurt, but i was surprised at how large the stock carb was on these saws already.

[@1jonat]

hey man are you from the burgh? I seen a channel 11 news sticker on your toolbox

[@toocheaptosmoke]

Not too far from the burgh, haha.

[@1jonat]

@@toocheaptosmoke i've been looking for old mac's and i cannot find them anywhere. I have two 610's and 1 605 but those were the biggest saws I seen for sale around here. I need a big one so I can use it for a saw mill. any ideas?

[@libbyforgeandfoundry6180]

Hey are you in pa ? You take work on with these ?

[@toocheaptosmoke]

I am, but unfortunately don't have enough time to even work on my own stuff, haha.

[@libbyforgeandfoundry6180]

If you ever decide you wanna tinker with one let me know I’m probably just down the road from ya , in any case nice work !

[@wildlandcamplife6532]

That was pretty impressive hahah! Wana port mine now?

[@toocheaptosmoke]

Wish I had the time, but it took months to get this one done, haha.

[@ryanslogging7069]

I got two pro mac's I need tank handel's got any ?

[@toocheaptosmoke]

Unfortunately I don't, parted out a blown pro 10-10 years ago but should have kept it.

[@conmanumber1]

Can this be done to P.M 750?

[@toocheaptosmoke]

Possibly, but not sure what the port and piston arrangement is on that saw?

[@Slaughterk360]

Dude run both saws who cares if it’s mint as fuck they need to eat wood lol badass work !!!

[@xnotx2]

Hey, I have a question unrelated to this video lol. Working on a 77(I think) TXL440 might be a 76 with a tx440 motor.. too lazy to go outside and check the vin plate. Anyways, the motor is EC44PT-06. Has a closed face clutch. I'm trying to find the proper puller for it, not the spider tool, but the bolt type to pull it off the crank. Manual says this is the puller (2870130) but can't find anywhere.This site shows the two piece, which I believe is correct. www.fullthrottletahoe.com/fullthro/publicstore/images/catalog-specs/09SnowPages/09Snow%20710.pdf Also too cheap to spend 50-60+ bucks, so trying to figure out if the bolt is a 3/4-16 or what. Also there is this stupid plastic thing that is being a b1tch to get out without destroying. Probably won't be able to find a replacement. Do you have anything laying around that you could check to see what size and thread pitch the puller bolt is? Much appreciated!

[@xnotx2]

www.vintagesnow.com/Polaris_files/tools.pdf

[@toocheaptosmoke]

the -06 motor sounds like it may be a '80-'82 TX-C engine? These and the TX-L indy motors had a very unique medium depth taper for the crank, not as deep as early engines, but deeper than later engines. These clutches may have had a specific puller, but the threads in the clutch should be the same as all the other "standard" clutch pullers, so a regular universal polaris puller should work.

[@xnotx2]

@@toocheaptosmoke Alrighty, ty. Oh what about the plastic spacer? Doesn't really look useful. It's right at the opening, tip of shaft, but recessed a bit. Tried a blind hole puller but it just slips.

[@toocheaptosmoke]

@@xnotx2 Oh yeah, those are just a spacer to keep the clutch bolt centered, that way it doesn't go in offset and potentially make the clutch out of balance. Even if you crack it during removal, you can usually salvage an still reuse it. They usually just slide out

[@xnotx2]

@@toocheaptosmoke keeps the bolt center, makes sense. thanks

[@s0nnyburnett]

Could make a lot of money charging for a garage talk fetish hotline. Buddy too busy with his family? Injured at work and can't turn a wrench? Need someone to talk shop with? Call now!

[@toocheaptosmoke]

Lmao! Just call 1-900-GOT-RUST...

[@dirtyfacegeorge9938]

Does anyone make pipes for saws?

[@toocheaptosmoke]

Not any off the shelf stuff that I'm aware of? I do have some ideas on taking a 50-80cc dirtbike pipe and making a hot saw out of a spare 026 I've got laying around. :)

[@BHZ55]

I swear I’ve watched I know 2000 vids on timing lol I just can’t get it

[@toocheaptosmoke]

It can be a fairly advanced topic to learn...

[@leesmith1112]

The pistons sold by Lil Red Barn are not made in China or Taiwan they are better quality then the cheap pistons on the internet, if they didn't have the pistons remade you wouldn't find any pistons for older saws anywhere

[@toocheaptosmoke]

No doubt, glad to have someone making parts for these.