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I have read in many places here that these motors are basically maxed out on HP in stock mode and normally aspirated. I have also read here that these motors have loose tolerances. Has anyone ever tried to balance and blueprint one? I did a search and came up empty.
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"Galaxy" 1982 XJ1100J, 1983 XV handlebars, new fusebox, homemade SS wind screen and SS muffler heat shields, homemade grab bar extension and luggage rack. XS750 140 mph speedo, '81 Venture oil cooler, V-Max ACCT, Yahman YICS Eliminator, 1st and 2nd gear Dremel fix. -
The parts you'd need to do a blueprint job on these are pretty much unobtainium these days, so I guess the answer now would be 'no'....
As to the 'loose' tolerances, that's typical of any air-cooled motor. Liquid cooled motors can be run much tighter because you can maintain even operating temperatures better.Fast, Cheap, Reliable... Pick any two
'78E original owner - resto project
'78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
'82 XJ rebuild project
'80SG restified, red SOLD
'79F parts...
'81H more parts...
Other current bikes:
'93 XL1200 Anniversary Sportster 85RWHP
'86 XL883/1200 Chopper
'82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
Cage: '13 Mustang GT/CS with a few 'custom' touches
Yep, can't leave nuthin' alone... -
FWIW, the factory motors WERE a balanced crank assembly. They also have identical upper chamber capacity. /they also have radioused rods......on and on.Originally posted by XJkid View Post
Rebuilding one using different coponents from other cratered motors negates a balanced crank assembly
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81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.Comment
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