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92 Freedom heads fitting on later 100 and 106 bikes??
Ok I need some technical help getting my head around something I just twigged too about Victory Freedom engine heads.
I have known that the ’05’07 100ci heads were known as the “best” heads in standard form as on the 100ci bikes they give 9.8:1 compression. So I was after a set of those for my “two front heads” engine.
BUT I have reaslised today the significance of the fact that the Freedom 92ci heads have the SAME combustion chamber VOLUME as the ’05-’07 100ci engines (info care of Rylan). The 92′ engines also have the larger exhaust valves. So they are lower compression (9.2:1) because of the lower swept volume of the cylinder. So what challenges would I come up against trying to fit say ’04-’05 front heads to my base ’09 100 ci 5 speed that I am fitting 106 barrels and crank, rods pistons too? I would expect to have difference senors and injectors but they are getting modified anyway, I am concerned about cam chain tensioner blades and oil holes between the ’92 heads the 106 barrels? I know the bore is smaller on the 92 ci but that is a good thing as it creates a ring around the combustion chamber to squelch the gas into the middle for better mixing. First pic is the 92 ci head the second shot is the 100 ci high compression head.
One bonus is if I can make this work is that I HAVE a ’04 92 head already…. so I would only have to get one more.
Keep in mind that I have a well equipt engineering workshop so making parts and making parts fit is not a problem.
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This discussion was modified 8 months ago by
Gavin.
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This discussion was modified 8 months ago by
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2 Replies
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From Cory…..
Ok hot a few things going on here,
The 08-17 oiling system is different than the 02-07.
08-17 oil external lines run from block to cooler and back to block.
02-07 Oil external lines run from block to cooler to heads.
That would indicate that the oil passages in the heads are different. (I do not know for sure). On 08-17 the oil will enter the head and return from the head through the cylinder.
On 02-08 oil enters the head from from the cylinder and exit/returns through external lines to oil cooler.
Does that mean you may have oil flow issues if you put -02-07 heads on a 08-17 engine. I would think that it would certainly a great concern
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This reply was modified 8 months ago by Gavin.
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This reply was modified 8 months ago by
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That’s really interesting stuff, and I think enough to put me off as that could get complicated REAL fast and result in a buggered engine….. not worth the risk and expense I think… I will stick with my late model low comp heads and do the best I can with them, skimming heads etc, and maybe a little nibbling at parts of the piston to get the compression up.
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This reply was modified 8 months ago by Gavin.
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This reply was modified 8 months ago by