064, 066 MS650, MS660 info thread

[jacob j.]

Thanks again JJ. I got a PM in with Dave. I'm not sure what I'm going to do yet but what do you want for that carb housing?

I think I have one that would work that you can have for free - it's got some dings and needs cleaned up. Let me dig it out and make sure it's structurally sound.

 

[RedFir Down]

Sounds good, thank you! I will make it right though.

I think I have one that would work that you can have for free - it's got some dings and needs cleaned up. Let me dig it out and make sure it's structurally sound.

 

[Definitive Dave]

I think I have a good old boot and good used new filter box we will get it figured out.

 

[PogoInTheWoods]

Sorry if I caused it. Why are you confused?

Nah, man. I just jumped in before I was up to speed on the conversation. It's all good.

 

[PogoInTheWoods]

the new and current tank handle assembly comes with all the intake parts to match either model

Could you please elaborate on that?

 

[popopboat]

Anyone had their hands on newer batches of 064 Meteor pistons?

Im about to order a 064 Meteor piston for my MS650, because there is no Meteor 650 to be found.
Are newer 064 Meteors just regular 064s or they improved skirt width with those little "ears" like the 650 has ?
I think ive seen that somewhere, but not sure.

 

[Deets066]

Anyone had their hands on newer batches of 064 Meteor pistons?

Im about to order a 064 Meteor piston for my MS650, because there is no Meteor 650 to be found.
Are newer 064 Meteors just regular 064s or they improved skirt width with those little "ears" like the 650 has ?
I think ive seen that somewhere, but not sure.

Doubtful they are making different runs of 064 pistons... Was there an update bulletin or something to make you think otherwise?

 

[popopboat]

Doubtful they are making different runs of 064 pistons... Was there an update bulletin or something to make you think otherwise?

Found a bunch of these pictures.
Dont know if laziness or really an upgrade.



Last one seems a bit fishy.

 

[Deets066]

Found a bunch of these pictures.
Dont know if laziness or really an upgrade.

View attachment 282350 View attachment 282351 View attachment 282352

Last one seems a bit fishy.

My 64 has a meteor in it from years ago. And would not be hesitant to get another.
If they have upgraded them, cool. If not, still cool.

 

[popopboat]

Alrighty then, its a win-win i suppose.

 

[cshunter83]

I have an 064 with the 1122 400 1303 Prufrex limited coil that is bad. I haven't pulled the flywheel yet to see if it's double keyed to use the common unlimited coil yet. If it's NOT double keyed, is my only option to get a double keyed flywheel? Is it possible to mount my current flywheel without a key in the correct position in order to use the unlimited coil? I have not been able to find ANY 1303 coils anywhere. Thanks.

 

[jacob j.]

I have an 064 with the 1122 400 1303 Prufrex limited coil that is bad. I haven't pulled the flywheel yet to see if it's double keyed to use the common unlimited coil yet. If it's NOT double keyed, is my only option to get a double keyed flywheel? Is it possible to mount my current flywheel without a key in the correct position in order to use the unlimited coil? I have not been able to find ANY 1303 coils anywhere. Thanks.

It's possible to replace the 1303 coil with the 0000 400 1300 universal module and then re-time the non dual-keyway flywheel (1204) that is timed for the rev-limited coil to work with the non rev-limited coil.

I've built several that way. @Mastermind can also re-broach your 1204 flywheel (if that's what you have) to work with the non rev-limited ignition.

 

[cshunter83]

It's possible to replace the 1303 coil with the 0000 400 1300 universal module and then re-time the non dual-keyway flywheel (1204) that is timed for the rev-limited coil to work with the non rev-limited coil.

I've built several that way. @Mastermind can also re-broach your 1204 flywheel (if that's what you have) to work with the non rev-limited ignition.

You wouldn’t happen to have the correct position degrees/measurement for where the keyway should be would you? Thanks for the reply.


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[jacob j.]

I don't know exactly offhand - most modern Stihl professional saws are in the range of 26-31 degrees, so that would probably be a good range for you to look at. @huskihl might have a better idea on that.

 

[huskihl]

I don't know exactly offhand - most modern Stihl professional saws are in the range of 26-31 degrees, so that would probably be a good range for you to look at. @huskihl might have a better idea on that.

I’m not sure either. I’ve never done one of the conversions or messed with it either way on the 1122 series . On a Dolmar 7900 with the standard limited coil, the fw is positioned about 30° ahead of where the 272 limited coil runs.

From what I’ve read, a coil can’t fire earlier than when it’s triggered. So any coil that has an advance feature built into it is normally mounted so that it fires about 30° before it actually needs to. The circuitry inside the coil then retards the timing back down to around 28° BTDC at idle, and can advance an additional 10° or so at max rpm.

Not that it really applies here, just explaining why there are two slots

 

[Ksaws]

I have an 064 with the 1122 400 1303 Prufrex limited coil that is bad. I haven't pulled the flywheel yet to see if it's double keyed to use the common unlimited coil yet. If it's NOT double keyed, is my only option to a double keyed flywheel? Is it possible to mount my current flywheel without a key in the correct position in order to use the unlimited coil? I have not been able to find ANY 1303 coils anywhere. Thanks.

I have done exactly this. Not recommended as its a bit bodgy. I had an 066 flywheel with an x marked on it where the unlimited position is (no keyway tho) so I copied the position onto the 064. It's been fine but I really must pull it and cut a keyway with a couple of hacksaw blades taped together.

 

[cshunter83]

Yeah this is probably what I'll end up doing. I guess I just need to figure out where the "X" mark should be on it since I don't have another one to go off of.

 

[PogoInTheWoods]

Take the nut off and see if there are two keyways.

 

[cshunter83]

Take the nut off and see if there are two keyways.

It only has one.


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[PogoInTheWoods]

Time to improvise.

You wouldn’t happen to have the correct position degrees/measurement for where the keyway should be would you?

Without looking it up, I'm pretty sure this applies to the 1204 flywheel. You can probably verify it one way or another earlier in the thread somewhere.

Retarded 5° from the existing keyway position is where you need to be according to several references. You can do this without a key if you are very careful about cleaning both the crank and the flywheel for spotless mating surfaces. The taper of the crank is what provides the strength of the mechanical attachment via the torque of the nut. The key is for timing alignment only.

A word of warning: Less than a 5 degree starting point to find the sweet spot can really bite back hard. Better to start a little long than too short.