Need Stihl 066/660 help...

[Black Dog Chainsaw]

Pretty easy question for someone that knows this series really well I'm sure. I got the seals kit from HLS and I put a good used crank in this case... There are 3 oil seals and the small one fits the crank but is to small to seal the case. The bigger one (seen in pic fits the case but not the crank. Flywheel that fits the crank in 2nd pic with part number

So what's the deal? Only certain cranks can go in certain cases? Didn't know I needed to match the crank to the case if that's what's going on?????

 

[Time's Standing Stihl]

@jmssaws

Sent from my SM-G900R4 using Tapatalk

 

[jmssaws]

You have a aluminum flywheel crank in a poly flywheel case.

You need a 660 crank

 

[Black Dog Chainsaw]

You have a aluminum flywheel crank in a poly flywheel case.

You need a 660 crank

Well nuts!


Sent from my iPhone using Tapatalk

 

[Black Dog Chainsaw]

Is anyone pressing the 066/660 cranks apart to replace the lower con-rod bearings when they blow?


Sent from my iPhone using Tapatalk

 

[Time's Standing Stihl]

Randy was doing it. Not sure if he still is Nathan...

 

[jmssaws]

Is anyone pressing the 066/660 cranks apart to replace the lower con-rod bearings when they blow?


Sent from my iPhone using Tapatalk

I'll trade ya a 660 crank for that one.

Can you get a couple more pics of the aluminum flywheel?

 

[Black Dog Chainsaw]

I'll trade ya a 660 crank for that one.

Can you get a couple more pics of the aluminum flywheel?

I have 4x 066/660's sitting here with about 60-85% complete on all of them. I'm going to make a shopping list and snag some parts and seals that I need for a couple rebuilds. Don't know if that crank will be needed in another case or not. We might need to do some junk trading to get some stuff finished...

I was kinda mad at myself I put together a decent 660 last night with Meteor top end and didn't see the lower bucking spike hole was all wallowed out until it was 96% finished! IT RUNS GREAT... now I have to tear it all apart.

Also a almost perfect piston to reuse if the stinker wouldn't have a messed up edge...

What makes it worse is some idiot put together the piston and crankcase with an impact and bolts that were too short and they stripped the top 4 threads out of the cylinder bolt holes. How that thing stayed together is beyond me...

 

[dall]

you can helicoil the bucking spike hole or have someone weld it up i wouldnt take it apart and throw the case away

 

[Black Dog Chainsaw]

you can helicoil the bucking spike hole or have someone weld it up i wouldnt take it apart and throw the case away

yea I know... I'm less than a 2 hr drive from Shaun who does a lot of the mag welding around here... Shaun needs it tore down in order to weld it. So I might just tear it all the way down and put the crank from that case over into the other crankcase... Then all I need is shaun to weld the case later if I find/trade for a crank that goes with that case.

 

[angelo c]

Nate,
The coils match the flywheels and the cranks match the cases.
Def Dave has a cheat sheet somewhere here with a step-by-step coil/flywheel matchup/lookup
ill see if I can find it fer ya.

Bingo:
http://opeforum.com/threads/064-066-ms650-ms660-info-thread.696/#post-31311

 

[psuiewalsh]

yea I know... I'm less than a 2 hr drive from Shaun who does a lot of the mag welding around here... Shaun needs it tore down in order to weld it. So I might just tear it all the way down and put the crank from that case over into the other crankcase... Then all I need is shaun to weld the case later if I find/trade for a crank that goes with that case.

Is it too big for a 6mm timesert? easy to drill the hole out in the spike.

 

[Black Dog Chainsaw]

Nate,
The coils match the flywheels and the cranks match the cases.
Def Dave has a cheat sheet somewhere here with a step-by-step coil/flywheel matchup/lookup
ill see if I can find it fer ya.

Bingo:
http://opeforum.com/threads/064-066-ms650-ms660-info-thread.696/#post-31311

Thanks, that is exactly what I needed. I sorted the 066/660's into piles on the floor matching the cranks to the good cases. Then added a flywheel to each crankcase and crank, and added all the extra parts around that... Now I'll just have to figure out which coil goes to each saw/fw... At least I have a good start on it! Looks like I have 3 more to build out of the parts I have. Then it will be a question of whether there is enough to warrant a 4th build...

Is it too big for a 6mm timesert? easy to drill the hole out in the spike.

No, that tapped hole is like 5/16 - 3/8 already! Seems like it has threads maybe 40-50% of the way around the hole. The rest of the 50-60% is just blank open spots where the case had no meat left (seen in pic, bottom of threaded hole - no threads!). It will have to go visit Shaun for some help along with a good cylinder that has a tap broke off in the muffler bolt hole!

 

[dall]

Thanks, that is exactly what I needed. I sorted the 066/660's into piles on the floor matching the cranks to the good cases. Then added a flywheel to each crankcase and crank, and added all the extra parts around that... Now I'll just have to figure out which coil goes to each saw/fw... At least I have a good start on it! Looks like I have 3 more to build out of the parts I have. Then it will be a question of whether there is enough to warrant a 4th build...


No, that tapped hole is like 5/16 - 3/8 already! Seems like it has threads maybe 40-50% of the way around the hole. The rest of the 50-60% is just blank open spots where the case had no meat left (seen in pic, bottom of threaded hole - no threads!). It will have to go visit Shaun for some help along with a good cylinder that has a tap broke off in the muffler bolt hole!

i didnt know the hole was that big so it does need welded up

 

[Black Dog Chainsaw]

i didnt know the hole was that big so it does need welded up

If I could have used an insert I would have. the hole was wallowed out so big that 1/4-20 could be held in the hole loosely.

I'm going to do a run of 066/660's to help free up some shelf space and then do some 044/440's next!

 

[jmssaws]

Most all coils will work with most flywheels.
Any 2 bolt coil will work on a poly flywheel.

The limited coils are big and look nothing like a regular coil

 

[Black Dog Chainsaw]

Most all coils will work with most flywheels.
Any 2 bolt coil will work on a poly flywheel.

The limited coils are big and look nothing like a regular coil

pretty sure I have a red light coil and the red light carb box. I might put together a red-light 066... we'll see...

Still trying to decide if I want to use my uber nice 066 flat top cylinder in one of these builds or not...

 

[jmssaws]

You need a aluminum flywheel crank to use a red light coil.