78 yamaha tt500 tec help please

I am trying to build the old clasic bike up with vintage parts any
thing you might have seen or done in the past to hop this thing up i
would like to know from fork swaps to carb jeting or any thing
inbetwen but still age corect

 

Just do a running restoration on it, leave it stock and ride it on
Sunday morning.

If you really, really, really want more horsepower, buy a 600cc
sportbike which has already been manufactured to produce 100
horsepower at a bazillion RPM.

Souping up a motorcycle engine is a matter of boring it out and
installing oversized pistons, porting the head, maybe installing
larger valves and a wilder camshaft. You'll need a high compression
piston to work with the wilder cam. Then you install a bigger
carburetor that mixes the gas and air better. And the engine will need
a shorter exhaust pipe to work at higher RPM.

Since an engine can only produce more horsepower if it runs at higher
compression, or pumps more air through it by operating at a higher
RPM, the motorcycle will be harder to ride because you need to keep it
buzzing at the higher RPM.

So you need to change the drive sprockets. And, because you're riding
harder, you need better tires mounted on wider rims.

When you're done with all this stuff, the motorcycle doesn't look like
a TT500 any more, it looks like a flat tracker.

Maybe you want to google up some flat track and thumper forums for
ideas.

 

This guide from Classic Bike contains a wealth of tuning improvements
and chassis tips.

http://www.classicbike.co.uk/pdf/506/197731.pdf

 

<snip the usual bollocks>

I think the Classic Bike article contains everything he needs,
actually. It includes plenty of simple tuning tips, as well as how to
do a simple bolt-on disc front brake conversion - a good mod, as the
TT500's front drum was considered inadequate in the 1970s.

Stick to what you know, which is directing people to parts fiches, and
leave the practical advice to those who know about that.