I've ran into this chart a few times, and it seems to be accurate...
Bill's Saw Shop - Stihl chain saw specifications
Bill's Saw Shop - Stihl chain saw specifications
346-1.28''
357-1.34''
372-1.42''
385-1.46''
395-1.50''
source-husqvarna website
Based on this, the Makita 7301 cutoff saw has the same bore/ stroke as the 7301 chainsaw. Any idea if the chainsaw cylinders will interchange with the cutoff saw? Looking at some of the parts breakdowns, the chainsaw and cutoff saw cylinders certainly look different.Dolmar/Makita's 6400-7900 all have a 37mm stroke which is 1.46"
Based on this, the Makita 7301 cutoff saw has the same bore/ stroke as the 7301 chainsaw. Any idea if the chainsaw cylinders will interchange with the cutoff saw? Looking at some of the parts breakdowns, the chainsaw and cutoff saw cylinders certainly look different.
I have seen Husky 345 saws on ebay with a 350-something piston and cylinder.
What P&C would fit the 345?
Thanks,
Hal
Some of is the key here, most 50s interchange with the P5000/500 and Jonsered 490, and not with the 55/51 - as I understand it (I am no expert on these saw models).
You can physically put the p/c off of the cutoff saw onto the chainsaw, but it is an open port cylinder just like the 6400/6401. It is meant for brute torque and won't rev very high at all.
Back in the 80's had a good Husky dealer. I would buy new 2100's and have the dealer exchange 285 p@c,no charge +warranty.Me and my crew used them for felling,plenty of power for 20" bar with lots more trees per tank.
Quote Originally Posted by Tempestv View Post
Based on this, the Makita 7301 cutoff saw has the same bore/ stroke as the 7301 chainsaw. Any idea if the chainsaw cylinders will interchange with the cutoff saw? Looking at some of the parts breakdowns, the chainsaw and cutoff saw cylinders certainly look different.
You can physically put the p/c off of the cutoff saw onto the chainsaw, but it is an open port cylinder just like the 6400/6401. It is meant for brute torque and won't rev very high at all.
I have done alot of mixxing and matching of P&C on 6400/6401 through 7900/7901 along with Solo 681's and this is what I have learned so far .
Dolmar/Makita's 6400-7900 all have a 37mm stroke which is 1.46" and all Solo's 665-681s all have a 38mm stroke which is 1.50" plus the rod is longer by 1mm or 0.040" so you need a total of .060" plus a base gasket of which I prefer the Dolmar metal base gasket which is not only stronger but thinner by 2 or 3 thousands of an inch. the easiest way to put a dolmar 7900P&C on a Solo 665,675,or a681 for that matter is to order the big bore kit adapter plate from Bailey's which is .060 thick and the order your 7900 P&C fom a Dolmar dealer and ask for the metal base gasket which is .017 thick =.077 perfect.
Now as for the bore sizes 6400/6401/6421/6410 and 665 all 48mm 7300/7301 and 675 all 50mm 7900/7910/7901/7921 and 681 all 52mm. transfer port design 6400's and 665 open port transfers 6 ports. 7300's, 675's ,7900's, and 681's all Quad port transfer design.
On another note I want to make the ultimate felling saw put a 681 crank in Makita case or a Dolmar case with a 7900 P&C new piston design just a mild port job so it won't get to hot and cause tank vent problems and the HD air filter kit and a Walbro HD-12 carb from a 681 or a 372. I have one but backwards it is a 681 with a ECsaws 7900 P&C on it and man that saw will out cut every saw I have put it up against and it's just a work saw. It is amazing for a 81cc saw. I just wish it had the better air filter and the extra pound missing like my 7900's.
....
The Parnter 5000 was 44mm closed port
The partner 5000 plus was 45mm close port
The partner 500 was 45mm open port with a large Combustion chamber
The Husky 50 had a 44mm open port 49.xxx cc
The husky 51 came with both the 45mm open port and 45mm closed port 50.9 cc
The husky55 (both regular 55 and the 55 rancher) came with 45mm closed port 51cc(rare) and 46mm open port 53cc. Some of these had a decomp on them.
The Jonsered 490 is identical to the partner 5000.
The jonsered 590 is the same as the partner 5000 plus. .....
My 665 (that I'm converting to 681 w/7900 P&C) has a quad port cylinder like the 7900. The Mahle cylinder casting # is 52ZK13 W2. When I pulled the cylinder I saw 52ZN and I almost fainted. I thought they had mistakenly put a 681 cyl. on it. Also has windowed piston.
Shep
Husky: Bore / Stroke
362/365: 48mm / 36mm-1.42"
371/372: 50mm / 36mm-1.42"
372xpw:51.4mm/ 36mm-1.42"
281xp : 52mm / 38mm-1.50"
288xp : 54mm / 38mm-1.50"
385xp : 54mm / 37mm-1.46"
390xp : 55mm / 37mm-1.46"
394xp : 56mm / 38mm-1.50"- Dual transfer ports
395xp : 56mm / 38mm-1.50"- Quad transfer ports
2100,2101
298xp : 56mm / 40mm
3120xp: 60mm / 42mm
Wish that would work on a Jred 2095.395 w/ 3120 top end and crank
Enter your email address to join: