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Discussion Starter · #1 ·
Can anybody tell me whats the differance between the f6 and f7 i know they have the same base motor but the top end is different say if you took a f7 top end and dropped it on f6 would you have an f7 then? Sorry to confuse anybody just wondering the differances :dunno: is the clutching the same i know that they weight the same...... ( overall will a f6 become a f7 by just placing the f7 top end on the f6 base thanks.)


:frech32: :banana:
 

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Any change in power will effect clutching so no the clutching is not the same. Carburation, whether it is EFI or not will also be different. Gearing also will probably be different (though I'm not sure about that). As far as the engine--as long as the crank and rods are the same then yes you can put a 700 top end on a 600 and get a 700, however, only in reference to displacement. Check with your Cat dealer to see if the bore size is the only difference in engine displacement between a 600 and 700. Even if that is the only difference, however, you will still have all the other factors previously mentioned to deal with. The transfer ports are probably different also. Hope this helps.

AC-F7
 

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Just the top ends are the difference, maybe send the ecu or cdi out for reprograming or get a f7 ecu/cdi. So just top end, ecu/cdi, pipe(depends), heavier weights(04's f6&7 have same clutching and gears except weights). Everything will bolt on with no mods, can be found cheap in the swap or salvage.
 

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Discussion Starter · #5 ·
Ok thanks guys would any of you know what should the compression be on an f6 what would be low compression and what would be an ideal compression?
 

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Discussion Starter · #7 ·
Thanks cat#1 mine is only 125 and 127 don't know if thats right or not but i only have 320 miles on it and i have to get my oil pump fixed as well i know she uses way to much oil. Over a gallon in 280 miles have to get it ready season starts soon.

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Originally posted by bigfeller@Sep 30 2005, 08:49 AM
Thanks cat#1 mine is only 125 and 127 don't know if thats right or not but i only have 320 miles on it and i have to get my oil pump fixed as well i know she uses way to much oil. Over a gallon in 280 miles have to get it ready season starts soon.

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All compression gauges read different, at least your cylinders are close to the same compression.

Before you know it we will be riding soon. :banana:
 

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Yeah, some gauges read different. If you only have 3-400 miles, I doubt you have anything wrong.

F7's run a taller gear then the F6. You'll want to change that also to increase hole-shot.
 
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