Sirio evo 4 & Orion Alpha .12engine
03-05-2010 | 06:42 AM
#1
Sirio evo 4 & Orion Alpha .12engine
Hi guys, I need more information about this 2 engines therefore hope that u all can help me!
From what i know the new .12 Orion Alpha is a sirio based engine and i know that both Sirio evo 4 n Orion Alpha share the same engine bearing size.. So i would like to know do they share the same p/s, rod and crank? Thanks
From what i know the new .12 Orion Alpha is a sirio based engine and i know that both Sirio evo 4 n Orion Alpha share the same engine bearing size.. So i would like to know do they share the same p/s, rod and crank? Thanks
03-07-2010 | 05:10 AM
#2
Tech Initiate
Joined: Oct 2005
Posts: 45
From: Germany
The Orion Alpha .12 are based on or actually are Sirio XXX engines.
The Evo 4 had a different bore and stroke...and the well known sleeve layout.
The XXX engines have a much shorter liner where the TDC is the top of the sleeve.
So both...p/s sets and combustion chamber are different between both engines.
Same for the crankshaft...
Conrod and bearings are interchangeable...
--- MARTIN ---
The Evo 4 had a different bore and stroke...and the well known sleeve layout.
The XXX engines have a much shorter liner where the TDC is the top of the sleeve.
So both...p/s sets and combustion chamber are different between both engines.
Same for the crankshaft...
Conrod and bearings are interchangeable...
--- MARTIN ---
03-07-2010 | 04:55 PM
#3
The Orion Alpha .12 are based on or actually are Sirio XXX engines.
The Evo 4 had a different bore and stroke...and the well known sleeve layout.
The XXX engines have a much shorter liner where the TDC is the top of the sleeve.
So both...p/s sets and combustion chamber are different between both engines.
Same for the crankshaft...
Conrod and bearings are interchangeable...
--- MARTIN ---
The Evo 4 had a different bore and stroke...and the well known sleeve layout.
The XXX engines have a much shorter liner where the TDC is the top of the sleeve.
So both...p/s sets and combustion chamber are different between both engines.
Same for the crankshaft...
Conrod and bearings are interchangeable...
--- MARTIN ---
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