Jonsered 625/630/670 etc questions port or not to port??

[SawGarage]

Hey (J-red) guys...

I've seemed to have been doing a damn good job of collecting these lately...

In 4 months, I've found:

2 2050's (almost new)
1 2055 (almost new...2nd chain)
1 90
1 455 with heated handles
1 630 super
1 510 SP
1 625 (this one...)


I found the 625 in a pile of "parts" saws...

Pulled a hair under 185 PSI on the gauge WOW) P&C look NEW. still machine grooves on BOTH sides.


This is the only two (running) issues it has (Well, 4 if you count the missing outlet/screen for the muffler and a cover stud...)

Notice the missing stud....

Do these insert from inside the oil tank? I wonder if someone snapped it off, and tried drilling it, and maybe got the bit stuck, and it spun the stud mount...

Course, the clutch cover is missing too...


The saw will fire with mix, needs a carb cleaning... here's why I think it doesn't run:

:jawdrop:

Enough saw dust in there? had to be close to 1/16"-1/8" thick...no pumping there....






What is the overall differences between the 625, 630 and 670?? ( the 670 is around 67cc's??? i think?)

anyone have a bar stud muffler outlet (or should I weld up the hole, and MM it?) and a clutch cover?

I'm thinking this might make a nice firewood saw... would some clean up in the cyl do some good (doesn't it always?? )



Thanks guys!

Jay

 

[Cantdog]

Differences

The 625 is the same thing basically as the Husky 61. Some differences but a 48MM, 61cc open port motor. Some gains by porting but still open port. Probably best left stock. The 630 is the same cc but with closed port cyl and windowed piston. Way better choice to port IMHO. I have (as you can see in my sig) a 630 Super II that I ported to about 58% and that runs real strong, turns 14,400 easy, 4 stroking hard. Very nice saw to use. I don't have a complete 670 but they are as you said, 50MM bore 67cc and are about the same as the Husky 268XP. Again Husky and Jred set things up a bit different but are about the same in the end. Again as you see (in my sig) I have a 61/268XP conversion that I ported to 63% and added a 670 (250A Tilly) carb which was a little tricky but doable and this saw is much more powerful than my 630, as it should be. I think you would be happy with porting the 630 or the 670 but I would probably not bother porting the 625. If it's in as good shape as you say it will cut good as is and will last for yrs with normal care.

 

[spike60]

That's a good haul for the last 4 months. A saw every other week is a pretty impressive.

The almost new 2055 sounds very interesting; have you run that yet? They build quite a lot of compression when they break in, and that one may not have even hit it's peak yet. Depends on how quick the original owner went through that first chain.

 

[pioneerguy600]

Port up the 670, you won`t be disappointed at all, its a wolf in sheeps clothing once ported and a muffler mod, dropped the squish to .019, it even impresses a Stihl head like me.

Not too bad for a freebie,came in a big box of Jonsered parts.
Pioneerguy600

 

[TRI955]

A 272xp topend will fit this series of Jonsered correct?

 

[Cantdog]

A 272xp topend will fit this series of Jonsered correct?

Yes it will bolt up. But you will need the 272 intake system and carb. Depending on the age of the 670 you may have some fuel system work to do too. The later 670 had two fuel lines, fuel in and a return line as well so the tank may be drilled for two and the return would have to be plugged. I had to do the opposite on my 61/268XP as I installed a 670 carb to a Husky intake. I had to drill the case and tank to install the return. And I also had to tap into the isolation block to pick up the impulse. (625 and 670 have external impulse, Husky internal) A bit of work but it worked flawlessly right from the start. You would have to do the same if you didn't have the 272 carb (260) and only had the 670 carb (250A) I am not sure about cover issues with a 272 top to 670 but getting the 268 top under the 61 cover took a little doing too.

 

[Cantdog]

Nice looking 670 Jerry. Probably runs similar to my 61/268XP as they are pretty much the same saw now. I put on that Bailey's Special 20" Carlton with Woodland Pro Combo (couldn't resist $34.95!) She pulls it real well.

 

[SawGarage]

The 625 is the same thing basically as the Husky 61. Some differences but a 48MM, 61cc open port motor. Some gains by porting but still open port. Probably best left stock. The 630 is the same cc but with closed port cyl and windowed piston. Way better choice to port IMHO. I have (as you can see in my sig) a 630 Super II that I ported to about 58% and that runs real strong, turns 14,400 easy, 4 stroking hard. Very nice saw to use. I don't have a complete 670 but they are as you said, 50MM bore 67cc and are about the same as the Husky 268XP. Again Husky and Jred set things up a bit different but are about the same in the end. Again as you see (in my sig) I have a 61/268XP conversion that I ported to 63% and added a 670 (250A Tilly) carb which was a little tricky but doable and this saw is much more powerful than my 630, as it should be. I think you would be happy with porting the 630 or the 670 but I would probably not bother porting the 625. If it's in as good shape as you say it will cut good as is and will last for yrs with normal care.

by porting to 58% and 63%, what exactly do you mean? when you ported these, what work did you do to the transfers? So i'm presuming the closed port is a healthier setup then...more punch into the cyl when the piston exposes the port? just in case it had a 630 cyl put on, can I tell by looking through the intake and/or exhaust port? I was thinking cause all I have left (during cleaning etc) was the 4 cyl bolts to do a little woods port.


How should I solve the muffler issue?

That's a good haul for the last 4 months. A saw every other week is a pretty impressive.

The almost new 2055 sounds very interesting; have you run that yet? They build quite a lot of compression when they break in, and that one may not have even hit it's peak yet. Depends on how quick the original owner went through that first chain.

That's only the J-red stuff... doesn't count the Husky, partner, stihl, etc (yes, my wife really gets on my case, but I've sold a couple this week... )

The 2055, only to tune it... I'll post a couple pics.

Port up the 670, you won`t be disappointed at all, its a wolf in sheeps clothing once ported and a muffler mod, dropped the squish to .019, it even impresses a Stihl head like me.

Jerry, I wish I had a 670, I do not.


Not too bad for a freebie,came in a big box of Jonsered parts.
Pioneerguy600

You and I have a LOVE/HATE relationship I love your collection, and your finds, but I HATE the free part...how do you do that??

I dunno WHAT you would consider free... I'm always trying to figure you out..

IS it something like this, or different:

I bought A like new mantis tiller, a like new mac-cat 16", a 011avt parts, a homelite (ps-33) parts saw, a Husky 39R clearing saw, a 268XP in pieces, and a 288xp in pieces for well...for what I sold the Mac and the 011 for, I've more than made my $$ back. Does that count for getting the 268 & 288 for free? now if I sell the clearing saw, or trade it for a 272, would that count for free too???? HELP ME OUT HERE!!! lol:jester:

Nice looking 670 Jerry. Probably runs similar to my 61/268XP as they are pretty much the same saw now. I put on that Bailey's Special 20" Carlton with Woodland Pro Combo (couldn't resist $34.95!) She pulls it real well.

Don't talk to him.... (3 yr old pouting humpppft.)

 

[SawGarage]

2055 & 2050

Crappy pics:

here's the 2050 I picked up:

 

[pioneerguy600]

Well this Jonsered started out from a big box of Jonsered parts I found on my doorstep one day I came home from work. To this day I don`t know who dropped them off, no one ever confessed up gto it. Around here they all know me to be pro Stihl and I collect and restore Pioneers. Thought the box of Jonsereds was just a joke at first but after looking over all the stuff in the box, well there was 5 big saws in there and a couple of smaller 50 cc ones also. Next thing I knew was felow member Dan Can gave me another 670 Jonsered in pieces also, so I just built one saw from the bunch of them,there was also a new P&C in the parts box so it got a porting and put in this saw along with every other part I needed was in the box to complete it, mostly NOS parts or very near new. Out of that box I built 5 real nice running saws and sold a bunch of parts to boot. I owe somebody a big one for that box of parts. Never sunk a cent of money into any of them so that`s what I call free, just my time when I feel like it to assemble 2 , 625`s, 1 630, 1 670 and a 2050. Still a bunch of stuff left and a nearely completed 2071when I get around to it.
Pioneerguy600

 

[pioneerguy600]

I traded my 2050 for a 2094, was that a good trade?
Pioneerguy600

 

[SawGarage]

I traded my 2050 for a 2094, was that a good trade?
Pioneerguy600

my original comment about our relationship still stands.


I'd trade BOTH my 2050's for a 2094 (although, that may be a bit over-zealous, as I may get more for the two 2050's than a 2094 sells for needing a cleaning...)

'around here they all know me... who's they?

J

 

[Cantdog]

GR40RCapri; In terms of % it refers to the width of the porting as compared to the bore dia. The easiest way to tell the difference between a 625 and 630 is to look for an external impulse line from the top of the carb to the bottom of the cly. If it has one it's definately a 625 (or 670) but of the three only the 630 has an internal impulse corridor same as the Huskies.

Yeah..........I agree Jerry sucks......I hate free when it's not me!!!!! AND almost new stuff too!! Someone knew you needed some color in your life Jerry!! But seriously a nice looking 670 gotta love it!!!

 

[pioneerguy600]

The 2094 I got in trade for the 2050, not touched,just the way I got it.

The older gentleman that I traded with told me that this is the original bar and chain that the dealer put on the saw the day he bought it new. It does not have a decomp and he did not have the strength to start it, he needed a smaller easier starting saw, so that`s what I traded him.
Pioneerguy600

 

[TRI955]

Jerry, you do suck! That has to be one of the best trades I have seen...

 

[pioneerguy600]

I definitely would have used the 2050 more since I have not even run one tank of fuel through this 2094 since I got it. It makes a colourful shelf queen.
Pioneerguy600

 

[DEG305]

The 2055 is a real hot rod saw when muff modded and a mild port job! I picked one up needing a piston. Now my 2054's all stay at home when I cut firewood. the 630super takes care of the big stuff and the 2055 does the cleanup. I've got a 670 thats needing a piston but I'm in no hurry, its probably too heavy for my 70 year old arms to operate anyway!

 

[Cantdog]

Jerry, you do suck! That has to be one of the best trades I have seen...

Yeah I used to like Jerry but now I'm not so sure........taking advantage of that ol guy....LOLOLOL!!!! That is an nice looking 2094...good trade!!!! A trade is just that, get rid of something you can't/don't use and swap it for something you can/do use. Everyone is happy but I think you came out ahead but even that is not what it seems if you don't use it much either. I know what you mean though, everything I cut around here can be done with that 61/268 or 70E or 80. Much as I would like a real big saw I really don't have a need. Doesn't mean I dont have a want though!!!

 

[Cantdog]

The 2055 is a real hot rod saw when muff modded and a mild port job! I picked one up needing a piston. Now my 2054's all stay at home when I cut firewood. the 630super takes care of the big stuff and the 2055 does the cleanup. I've got a 670 thats needing a piston but I'm in no hurry, its probably too heavy for my 70 year old arms to operate anyway!

Perhaps but that 670 does not weigh more than a couple ozs. more than that the 630. Same case/tank/handles/etc. just more power. If you can run the 630 you could run the 670 even better. Might even be less work!! Both great saws.

 

[pioneerguy600]

When it comes to saws weighing too much I hardly even notice the weight of any saw that is smaller than my 090`s with 60-72" bars on them. I run and use them sometimes for 3-4 hrs straight, well only stop frequently to refuel, them things are sure hard on fuel but big on power.LOL
Pioneerguy600