My new "sneaky pete" chainsaw, Closed port Husqvarna 51

Roanoker494 · Mar 19, 2011

I picked this one up off Ebay a few months ago and I finally managed to get it onto the work bench tonight. The stock 45mm open port top end was shot so I went on the search until I found a good used 45mm closed port 55EPA cylinder and then I lucked into a new oem closed port piston. Now I have what looks to be a bone stock Husqvarna 51 but this one is now packing a big punch with the closed port top end and a stock looking modded muffler.

Here is what I started with

Roanoker494 · Mar 19, 2011

Some of the pictures from this evening

The old parts

The new top end

Roanoker494 · Mar 19, 2011

Something I found interesting is the different locations of the piston ring alignment pin

The open port piston had it line up dead center of the intake port

The closed port piston is turned about 45 degrees towards the flywheel

Always use a new intake boot and impulse pipe on these series saws

The top end installed

Roanoker494 · Mar 19, 2011

Now the muffler

Here are the stock pictures

Roanoker494 · Mar 19, 2011

Here is what it looked like when I was done

I have only drilled out two of the holes in this picture so you can see how much I opened them up

Got rid of that little flap

Here it is mounted on the saw, looks stock to me

Roanoker494 · Mar 19, 2011

Intake and carb installed

All back together

Roanoker494 · Mar 19, 2011

Nice looking 20" Oregon bar

But the chain is crap, going to grab one in the morning on my way to the VA GTG

Serial tag, looks like a 1995 model

Roanoker494 · Mar 19, 2011

The saw started with the choke and four pulls and seemed to rev well after it warmed up for a minute, hard to do any cutting at midnight. In the morning I will give it a tune, throw it to some wood and head off on the 117 mile drive to the GTG. Guess I will have to look into finding a chain brake handle at some point, the brake itself works fine.

Here is the compression after running it for a few minutes

Looks like a solid 155psi, maybe even a little closer to 160.

blsnelling · Mar 19, 2011

Nice work. Kind of burning the midnight oil aren't we

GTGs can be a lot of work!

Roanoker494 · Mar 19, 2011

blsnelling said:
Nice work. Kind of burning the midnight oil aren't we GTGs can be a lot of work!

I guess if I had not waited until the last minute I would not be running around now. Still have to tune this saw and put the carb back on the Super EZ auto in the morning, I have not even loaded the Jeep up yet. Got to try and get some sleep cause I a busy morning and then a long drive.

rms61moparman · Mar 19, 2011

They are fine little saws!

Heck, that chain is just now starting to cut good!!!

Mike

weimedog · Mar 19, 2011

That's a cool project! Thanks for posting that. I like those sleeper concepts. :rock:

Roanoker494 · Mar 19, 2011

rms61moparman said:
They are fine little saws!

Heck, that chain is just now starting to cut good!!!

Mike

I will have to agree now that I put the saw to some wood, the chain looks like holy he## but still cuts fine.

weimedog said:
That's a cool project! Thanks for posting that. I like those sleeper concepts.

I think it is pretty cool myself. I like it cause it looks like any other old worked 51, who would expect it is packing anything special. Unfortunately it is not much of a sleeper now that I have told everyone about it.

Roanoker494 · Mar 19, 2011

After I get some time with this saw I may pull it back down for a little port work, or I may end up paying someone else to do a good Woods port.

wigglesworth · Mar 19, 2011

Roanoker494 said:
After I get some time with this saw I may pull it back down for a little port work, or I may end up paying someone else to do a good Woods port.

I just came in from doing a bit of chip flinging on a EPA 55 jug myself...

huskydriver · Mar 19, 2011

Very nice looks like a god thing to do with my 51!!View attachment 176578

Roanoker494 · Mar 28, 2011

I had this saw out for its first real cutting job today and boy am I ever impressed. I laid into a big ole oak stump today, just to get it down a little, and it just flat out tore the stump up. I was worried that the 20" .325 was going to be to much but the saw has proved me wrong. I will get some pictures of the stump tomorrow, to dark to mess with it tonight.

Mastermind · Mar 29, 2011

Great job on the saw!!! Thanks for the pics.:msp_smile:

Chris J. · Mar 29, 2011

A job well done, Johnnie.

Except now when I run my stock 51 I'll be thinking about a 55EPA with a MM :laugh:

.

Roanoker494 · Mar 29, 2011

Here is the stump I attacked with the CP 51. I did have to fatten up the high side a little because it was screaming.

Surely I am not going to try to rip that stump in half with a 51?

Looks like I did..... and I took the longest path through it too....

My new "sneaky pete" chainsaw, Closed port Husqvarna 51

Help Support Arborist Forum:

Addicted to ArboristSite

Addicted to ArboristSite

Addicted to ArboristSite

Addicted to ArboristSite

Addicted to ArboristSite

Addicted to ArboristSite

Addicted to ArboristSite

Addicted to ArboristSite

Goosme!

Addicted to ArboristSite

Addicted to ArboristSite

Addicted to ArboristSite

Addicted to ArboristSite

Addicted to ArboristSite

Booned

ArboristSite Lurker

Addicted to ArboristSite

Work Saw Specialist

Addicted to ArboristSite

Addicted to ArboristSite

Similar threads

Join the conversation!

Join today and get all the highlights of this community direct to your inbox. It's FREE!