Red 670

[lwhaples]

Getting ready. No real plan yet,hoping maybe someone might set me straight on the squish band.

 

[lwhaples]

Been sitting on a new jug and piston,thought now was a good time to use them. But, the rod end is the wrong size for the new piston. So,will make the best with what I have.

 

[cus_deluxe]

thats a clean looking saw!

 

[lwhaples]

Thanks. Found a few pieces for it.

 

[huskihl]

Been sitting on a new jug and piston,thought now was a good time to use them.View attachment 16901 View attachment 16902 But, the rod end is the wrong size for the new piston. So,will make the best with what I have.

Never heard of different rod sizes on these. Are you sure your piston is for a 670?

 

[beaglebriar]

Subbed. I may get my hands on one of those soon.

 

[Tractorsaw1]

Great start Larry, I have thought these saws would be fun

 

[lwhaples]

Never heard of different rod sizes on these. Are you sure your piston is for a 670?

Looks like you are correct. The piston's number is 503 50 27 02 and is 52mm. Funny,has 670 written on it so I thought it went with the jug.

 

[huskihl]

Looks like you are correct. The piston's number is 503 50 27 02 and is 52mm. Funny,has 670 written on it so I thought it went with the jug.

May be an echo 670? No idea. You need a 50mm windowed piston for a jred 670 or a 268xp. Meteor or oem would be my choice

 

[lwhaples]

Finally This part takes the longest.For me.

 

[lwhaples]

A little farther along. Had to grid the side of the jug,it hit the fly wheel.Not to pretty. Ended up with the 19.5 with a gasket for squish.

 

[smokey7]

Very interested in how this runs. I was debating on doing some machining on the 670 I have built. I'm still waiting on parts so I suppose now is a good time

 

[lwhaples]

Took some time to finish up the saw. 99 121 81 are where the numbers fell.Could be, just how I see the wheel.Round numbers sure sound better.

 

[Rob Reeve]

Larry,
First Dibs on that one if you decide to let it go.

 

[NCFarmboy]

Looks like you are correct. The piston's number is 503 50 27 02 and is 52mm. Funny,has 670 written on it so I thought it went with the jug.

503-5027-02=281=52mm. I've got a pretty nice 670 Champ. Don't understand why you had to grind side of cyl. I have a bunch of theis series 266-272-61-66 never saw clearance issues. Have several extra OEM & Meteor pistons. PM if interested.
Shep

 

[lwhaples]

Thanks for the heads up on the piston. Dropped the jug a bit to get the 019 with the gasket.

 

[smokey7]

I forget how much I machined from mine. I had no clearance issues either. Either way it should run real good. I am surprised that more people are not interested in this build. These are awesome saws and there is a ton of them around.

 

[Motorhead]

I built a few of these and I did run into a tight fitting piston once, after I made sure it was the right piston I used a flat file on the piston to make it fit.The machine is still running fine.

 

[lwhaples]

I forget how much I machined from mine. I had no clearance issues either. Either way it should run real good. I am surprised that more people are not interested in this build. These are awesome saws and there is a ton of them around.

I took .035 out of the squish band.Had I not cut the base to fit the gasket,then the flywheel may have been OK. I still may open the muffler more. I only took the baffle out.

 

[smokey7]

I love the performance of gills I'm sure it will have plenty of flow. Mine don't have that style muffler only a flap in and a cover/deflector.