Rotate head on G-26
07-24-2010, 11:49 PM
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Rotate head on G-26
I need (want) to rotate the head on my G-26 180 degrees but am pretty sure there is more to it than just removing the head bolts and turning the head...any guidance would be appreciated.
Thanks
Murphey
Thanks
Murphey
07-25-2010, 09:04 AM
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RE: Rotate head on G-26
Thanks Ralph! I did take a peek inside and it APPEARS as thought the induction ports are symmetrical...I was thinking that both the cylinder and the piston needed to rotate together. It looks like I need to remove the wrist pin to do that...am I headed in the right direction? Assuming the ports line up...
Murphey
Murphey
07-25-2010, 10:56 AM
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RE: Rotate head on G-26
They don't line up but will work...Careful when removing the wrist pin, it gets lost easily. And be careful with the piston ring, it's pinned...The muffler and carb will be quite different too....
07-25-2010, 11:44 AM
#5
RE: Rotate head on G-26
The intake transfer ports of the cylinder will not align with the ports in the cranckase.
Also, they will face against the flow of the mix that is induced by the rotation of the crankshaft.
Check this link:
http://tech.flygsw.org/g26anatomy.htm
Also, they will face against the flow of the mix that is induced by the rotation of the crankshaft.
Check this link:
http://tech.flygsw.org/g26anatomy.htm
07-25-2010, 12:01 PM
#7
RE: Rotate head on G-26
I don't know if this engine has the feature, but some engines have a small built-in wrist pin offset in the piston.
That offset gives increased rod angle on the power stroke, less on compression and exhaust stroke where it has no advantage.
As Antique states, you can always try it and see.
Best luck!
That offset gives increased rod angle on the power stroke, less on compression and exhaust stroke where it has no advantage.
As Antique states, you can always try it and see.
Best luck!
07-25-2010, 12:31 PM
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RE: Rotate head on G-26
I cant remember but i think my CY 29 cylinder is on bacwards from stock,w/piston acorrding,same setup as G26,if i look will let u know,good luck!
07-25-2010, 03:59 PM
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RE: Rotate head on G-26
Well, that mystery is solved! It won't work! Not only are the induction ports not symmetrical, the cylinder skirts that goes into the crankcase on either side are not the same. The cylinder head misses by about 1mm. Thanks for your comments!
Murphey
Murphey
