stihl 066 identification

[mic stihl]

i recently purchased a stihl 066. just seeing if i can get any info on it. it has a decomp valve. serial number 133458208.

 

[HarleyT]

Not coming up in Stihl's database.

 

[MustangMike]

Not all #s are registered. I believe that # would correspond to approximately 1996, when the 046 was introduced.

 

[mic stihl]

i was told it needs new rings. was going to go ahead and get a big bore kit for it. any thoughts on which one to buy. hyway vs nwp from baileys. i am planning on using this saw for a small alaskan mill. what other upgrades should i do.

 

[MustangMike]

Have U seen anyone post that they got a big bore kit and it runs stronger than stock? I doubt it!

If your saw was made back then, it likely has good port timeing. I'm not sure about 066s, but the 046s made when your saw was made have better port timing, the EPA forced changes over the next couple of years.

I would save and re-use your cylinder if at all possible. If you just need new rings, do it, if U need a new piston get a Meteor. They are the best AM parts.

Use either a Stihl HD-2 or Max Flow air filter, and get a dp muffler cover. You will have to tune the saw a bit richer, but it will run a lot stronger with these parts. If you can afford it, get it ported by one of the builders, it will make a huge difference.

If you want to see the dyno results, go to the thread "Dyno tested ... Mastermind Ported 660 vs Stock 660 vs Dual port 660"

You can't get much better info than that!

 

[MustangMike]

I also meant to say, welcome to the site!

 

[mic stihl]

cool. thanks for the info, and the welcome.

 

[mic stihl]

also, about how much is it to have one ported by a builder.

 

[MustangMike]

Not too much more than a big bore kit, and your results will be dramatically better.

Review the threads and PM a few builders and find out their availability and price.

 

[Adirondackstihl]

 

[mdavlee]

Get the HO oiler or mod yours. The max flow will be better for milling. The HD 2 packs too quickly and will need to be cleaned every couple cuts milling.

 

[Moparmyway]

If that's an 066, then why doesn't the recoil cover have STIHL moulded into the cover ?
Looks more like an 064 recoil cover, but 064's didn't have decomps, and I thought 066 flat tops had no decomps - weren't the decomps brought in with the bubble plastics ?

 

[Adirondackstihl]

If that's an 066, then why doesn't the recoil cover have STIHL moulded into the cover ?
Looks more like an 064 recoil cover, but 064's didn't have decomps, and I thought 066 flat tops had no decomps - weren't the decomps brought in with the bubble plastics ?

 

[mdavlee]

If that's an 066, then why doesn't the recoil cover have STIHL moulded into the cover ?
Looks more like an 064 recoil cover, but 064's didn't have decomps, and I thought 066 flat tops had no decomps - weren't the decomps brought in with the bubble plastics ?

There was a few years of flat top with decomp.

 

[Moparmyway]

I see .....

 

[blsnelling]

Recoil is too wide to be for an 064.

 

[blsnelling]

Won't see near as much gain with a DP cover on a early 066. The muffler was much more open in then.

Port timing wasn't much different on most 066 cylinders. It's only a few select cylinders that have been found to have a lower exhaust.

 

[MustangMike]

Brad, with my 2 044s (which both came with the 5/8" hole) the filter seemed to make a bigger difference than the dp cover, would that be the same with this one?

 

[Adirondackstihl]

 

[KenJax Tree]

The 044 mentioned in a 066 thread[emoji52]