Hi Brad,if the first version of the 046 had the optimum port timing why did Stihl change it?Same as my 066 redeye cylinder i believe,better than later 066's?Just curious on these changes.
Cheers,Chris.
Cheers,Chris.
Which 046 did I just buy?
- Thread starter JonCraig
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I was told at the time it was to meet the next tier of EPA emissions standards- Stihl changed the timing in all of their professional grade models and made the exhaust outlet on the muffler tiny, helping to reduce raw hydrocarbon emissions. The result was that the machine would have more latent heat in the cylinder and muffler but it also resulted in many more torched saws.
BuckthornBonnie
ArboristSite Guru
Tiny as in barely fits a pencil tiny--- unreal how far Stihl took that restriction on these saws.
Thank you all for your help on this. I think I'm going to swap this jug onto my 460.
Would you swap the piston, too? The 460 has a Meteor piston in it now with maybe 3 tanks through it.
Would the old 046 piston be better, since it's matched to the jug?
Put some new Caber rings in while I'm at it?
Would you swap the piston, too? The 460 has a Meteor piston in it now with maybe 3 tanks through it.
Would the old 046 piston be better, since it's matched to the jug?
Put some new Caber rings in while I'm at it?
BuckthornBonnie
ArboristSite Guru
If there's piston wear then new piston/rings. If there's not a lot of wear, then maybe just rings.
Thanks JJ.I was thinking emissions too.
Cheers,Chris.
Cheers,Chris.
Just rebuild the 046.
It needs a new tank, clutch, clutch cover, carb, all the plastics, etc. Doesn't seem to make much sense money-wise.
Rebuild the "shortblock" and collect the additional parts as possible.
BrokenSVT
Where did all these saws come from?!?
I just sent my "'D' cylinder, optimal port timing" 046 off to have a full rebuild, clutch replacement, some plastics replaced, bearings and seals, piston and rings, aluminum transfer cleaned from cylinder, etc. It wasn't exactly inexpensive, but I have a suspicion that it'll totally be worth it.
Well, I have a 460 and an 064. I could think about selling the 460 to fund an 046 rebuild...
I've got most of that for not much more than a good used tank on eBay listed.
Lol... you guys are terrible peer pressure. Glad I didn't hang out with you in high school...
BrokenSVT
Where did all these saws come from?!?
Trx250r180
Saw polisher
If he is like you or i ,he will have 1200 dollars tied up into a 600 dollar saw lol
Seeing as I'm $150 into my MS460, and $225 into my 064, I'd say I can splurge just a bit. 
