- Joined
- Aug 10, 2014
- Messages
- 1,969
forgot the tach drive mod
prime links
Fair Spares America, Inc
http://www.fairsparesamerica.com/services.asp
Front Master Cylinder Resleeving
Exhaust Port Repair
Cylinder Stud Repair
Tach Drive Modification
Gearbox Outer Cover Modification
Isolastic Upgrade
Welcome To The Norton Motorcycle Machine Shop
http://www.nortonmachineshop.com/
oldbritts Technical Articles
https://www.oldbritts.com/ob_tech.html
just gonna ad stuff for now that i run across, original iso mod should be prominent due to critical settings & major labor involved vs the verniers
an a to z alphabetical index list could be handy
prime links
Fair Spares America, Inc
http://www.fairsparesamerica.com/services.asp
Front Master Cylinder Resleeving
Exhaust Port Repair
Cylinder Stud Repair
Tach Drive Modification
Gearbox Outer Cover Modification
Isolastic Upgrade
Welcome To The Norton Motorcycle Machine Shop
http://www.nortonmachineshop.com/
oldbritts Technical Articles
https://www.oldbritts.com/ob_tech.html
just gonna ad stuff for now that i run across, original iso mod should be prominent due to critical settings & major labor involved vs the verniers
an a to z alphabetical index list could be handy
dunno about weaker but frame neck angle change for 850, yokes not compatible wth prior,
early frames 'widowmakers' & stll see them, but most are fixed,
rear frame loop weak, bends
early sidestands changed modified,
center stand itself upgraded (stronger) visually different, also went from frame to cradle mount,
- my 74 original still broke (weld) tho
3 type swingarm welded cross member supports near the pivot end i'm aware of,
early is tubular, then beefed up twice for 850,
next is rectangular with a pronounced v shape facing aft,
final 75 on, rectangular
early no cush, later wheel cush problematic, new for 75 way better but not an easy fix for prior
original left footbrake lever if the cable breaks,
original front brake master cylinder bore/piston size
primary cover oil seal, running oil also results in clutch slippage,
gearbox cover seals (o-rings mod fix),
proper oil filter introduced at some point
cylinder head exhaust pipe threads strip
afaik ^
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