I know that i newer bike handles better and is more technologically advanced. I want an old project bike. What is the power like on older bikes? 1986 cr125 is what im looking at. How comparable is the power from that bike to a newer 125? Way less power? Same?
That bike was pretty much a rocket, nothing special about the low end and had a decent midrange. Very good top end though....I believe the hp was in the mid twenties. I think that with a decent rider that bike could compete power wise with the newer 125's.....Suspension was good but I don't believe it had disc brakes yet.
If it is honestly an 86 the front was a disk. Forks were getting good for natural terrain and really didnt get any better until the mid 90's. About 5-7 hp down at peak.

If it is honestly an 86 the front was a disc. Forks were getting good for natural terrain and really didnt get any better until the mid 90's. About 5-7 hp down at peak.
Worth good money in parts @ $100 if you can be bothered otherwise it will get costly!
The 87 is regarded nowadays as a better all round bike and best front end of that era,
If I had a spare bit of cash I'd buy a 1997 or there about!
and some of their other Jap counterparts too as they were built from great quality steels and alloys all the way through to the late 90's but the global economy meltdown and China buying up all our ( UK + USA's ) crap scrap metal for years
most major intl manufacturers started farming production of parts out to China more and more to the point where we find ourselves today looking at rusty 3 year old Hondas and yams etc with cheap electrical and mechanical components!! They're even making Audis FFS