Help please!!!!

[woodenbiker]

I am very new to this site and I know this is a lot to ask on my first post but I am desperate to make this work so that I might be able to make some more furniture this summer.
I have a Mccolluch pro mac 800 that I use with my alaskan MKIII

and I would love to make the chainsaw run better to give me a bit more cutting power.
Believe me I wish I had bought a different saw but I have what I have, and I would like to make it run better. I have some mechanical knowledge and access to a full metal and machinist shop. what I need is any info on mods I can make to improve the performance and tips to where I might be able to find parts that I need or how to make parts I might need.

PS if you wanted to see what I do?!
http://woodenbiker.blogspot.com/
Thank you for any and all help you might provide
Chris

 

[romeo]

Lots you could do. Do a search here on cylinder porting and muffler porting. I wouldn't raise the head ports but I would widen them. You can also deck the cylinder and raise the compression, raise the ports according to what you deck.

Nice looking woodwork BTW

 

[thomas72]

I don't really think you can do to much to that saw. That is a fairly powerful saw. But what condition is the engine in? If it is badly worn then you will not have much power, and a good solution is to rebuild it. You can still find parts for that saw you just have to do a little search. Also, is you chain sharpened right for milling? That can take away power as well.

 

[woodenbiker]

what condition is the engine in? If it is badly worn then you will not have much power, and a good solution is to rebuild it. You can still find parts for that saw you just have to do a little search. Also, is you chain sharpened right for milling? That can take away power as well.

Yes I bought a ripping chain for it. I am not sure exactly what condition the motor is in I havent torn it down that far yet.

Thanks for the advice
Any and all other tips would be apreciated

 

[RaisedByWolves]

Do a compression test on it, that will tell you a lot about its condition, then you can figure on what to do from there.



Btw, NICE Furniture !

 

[woodenbiker]

Pro mac 800

Do a compression test on it, that will tell you a lot about its condition, then you can figure on what to do from there.

I have a compresion tester but what results should I expect from my chain saw.

ps thank you for the compliments on my furniture.

 

[woodenbiker]

Pro mac 800

Do a compression test on it, that will tell you a lot about its condition, then you can figure on what to do from there.

I have a compresion tester but what results should I expect from my chain saw.

ps thank you for the compliments on my furniture.

 

[Ed*L]

You definately do some impressive woodworking!!

Ed

 

[bigmac]

145-150 psi to still run good.

I found a bike that fits your site name.:biggrinbounce2:

 

[doc874]

All i can say is "WOW"!!

 

[livewire]

Geez dude! Ya ever think about giving up your day job?


Good looking work!

 

[woodenbiker]

I found a bike that fits your site name.:biggrinbounce2:

very funny and cool thanks for the pic and help

 

[Bowtie]

Very nice furniture! One piece of advice I read from Lakeside is that when you compression test the engine, dont use any adapter fittings for the spark plug hole, get the right tester for that plug size, or your compression reading will be lower and not accurate. You cant go wrong doing a muffler mod if you do it right. There is a ton of information on this site about muffler mods. Good luck and welcome to AS!

 

[Austin1]

I have a compresion tester but what results should I expect from my chain saw.

ps thank you for the compliments on my furniture.

My two smaller macs my 3.7 Eager beaver and my little 2016,32cc both have 150psi but my Sp105 has 170 psi just tested it 15 minutes ago!BTW really like that furniture!!

 

[vegaome]

Howdy woodenbiker,

I like things made of wood and metal. I really like the things you have created, well done.

v/r

Mike

 

[woodenbiker]

Compresion test

I did a compresion test and I got 150 psi but it took three pulls to get there. I got between 90 and 110 on the first pull. Does that sound like a good reading or should I get 150 on the first pull.

Thank for all your help
Chris

PS thanks for all the compliments

 

[oldsaw]

I did a compresion test and I got 150 psi but it took three pulls to get there. I got between 90 and 110 on the first pull. Does that sound like a good reading or should I get 150 on the first pull.

Thank for all your help
Chris

PS thanks for all the compliments

That's pretty good.

Mark

 

[TomKildare]

The furniture looks really great Mr. Woodenbiker. Do you do commissions? Would you like an agent in Europe? I'm volunteering.....

 

[woodenbiker]

Yes

The furniture looks really great Mr. Woodenbiker. Do you do commissions? Would you like an agent in Europe? I'm volunteering.....

Absolutely I would very much

My email is [email protected]
thanks
Chris

 

[Al Smith]

That saw is really just a large 10 series design.Because of the port design it really doesn't act like a normal saw nor would the modifications be the same.

You might take the screen out of the muffler and enlarge the outlet a tad.The screen is large and most likely would not cause much back pressure so leave it installed .

This series ,SP 80 ,SP 81 ,SP 800 and 850 are powerful saws but not in my opinion large enough to mill with.I know people try it but in my opinion it's almost a waste of time to even attempt milling with anything less than 100 cc s.

That saw is a most excellent faller/bucker .I have an SP-81 that I use on a regular bassis for these purposes.What little bit of milling I have done has been with a Mac 125 or Homelite 2100 and it even makes these big old saw grunt.