Author Topic: Stihl 046 460  (Read 949 times)

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Offline Cut4fun .

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Re: Stihl 046 460
« Reply #20 on: August 20, 2013, 03:44:17 pm »
Noticed this 046 has a D combustion chamber. All 046 460 like that?

Founds some good info posted by Wiggs in KY on 046 460 cylinders.

((((((((There are several different 046/460 cylinders. The earliest 046's, they had the d-shape chamber, larger transfer ducts and larger upper transfers, coupled with more transfer duration.  The last one i put a wheel on, Going off memory here, was around 100/115/75. Very little blowdown. Stock for stock, they will walk the dog over the late model 460 jugs. Not even a contest....

Then they shrunk the upper transfers and tunnels and gave it more blowdown. Consiquently, the exhaust port got smaller when that happened. Finally they ditched the D-shape chamber, gave it even more blowdown, and a pencil sized exhaust port opening. ))))))
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