ZX12 upgrade

blas32

Registered
My friend with the 02 ZX12 is tired of having the second fastest bike in town so he is putting on a Muzzy 1270 big bore kit with the clutch kit. Should give him about 190hp and 108 torque compared to my 170hp and 101 torque. He will be geared -1 front and +1 back with my -1 front +2 back. We do a lot of roll-ons for comparable testing and my low end power always gave my the edge, but how bad do you think it will be after his mods? Do you think if I put in the Yosh cams I would have enough power to pull ahead of him?
 
You could just save your money and laugh at him when his bike starts breaking down constantly (hey its a kawi). When he's in his garage cussing and scratching his head just give him a call and ask him to go riding. he he.
 
I hate to admit it , but the 12 is an untamed beast . It will never handle as well thou....so take him to the twisties , and humiliate the guy there . Or you could "top speed" him.
Go the other way with yer gearing...he'll getcha off the line,but with the grunt of the Bad Bird, you'll overtake .
Or....put it to rest..once an' for all...TURBO.
Those 12's ...I dont know what the deal is...they should be hotter . 33 an' a half intake valves , left open for 300 degrees . Exhaust valves are bigger than ours too, and are left dangling for like 294 . The busa has in's @ 33 , and exhausts at 27.5 . They hang open for way less time too,276 and 259 .
I think its the stroke, its way shorter on a 12 , so , in theory , it makes it's power up a little higher . I think you'll just about always be able to take him is you short shift it a little....just a little . While his tach is climbing looking for peak hp , you'll already be in the next gear .
For some reason...which escapes me right now , the 12 should be makin' better power . It just doesnt. They didnt give it as many cubes as the Bird either . They wanted this thing rev longer an' higher, is my guess . Compression is higher on the 12 aswell...I think . I dunno...the 12 is down a hundred cc's...but the numbers suggest it should have more GO. It juz dont . No show = the Busa is way prettier
No go = the Bird is fasta

it's a neat topic . Bottom line.....
the busa was faster outa the showroom .
He gets cams....you get cams
He gets piped...you get piped
He gets turbo...you get turbo

you see.....now yer into hot rods . Who has a thicker wallet?
$$$$$$$$$ = speed .
 
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