Should 4 strokes be given more displacement in pre 74?

[SAABCOMBI]

Cheers thanks fellows,  l have come back the earth, it was a little weapon.

[TM BILL]

Cheers thanks fellows,  l have come back the earth, it was a little weapon.

Apparantly not little enough though Dave 

[Tim754]

Got a 204cc barrel here ,takes XR200 pistons, it came from a modified... SL100 ....engine. That surprise surprise lunched it's valve gear    .....Engine had been fitted to another brand of motorcycles frame to improve handling.  Should take a piccy of the bore  beside a stock one.
PS I am NOT having a go at you Dave OK!

[mustanggrahame]

I see that 2011 Pro-Lites and Pro Open are having capacity parity for 2 and 4 strokes. Wonder if anyone will use a big capacity 2 stroke? Just thought this news might add to the discussion.
Cheers, Grahame

[Marc.com]

I see that 2011 Pro-Lites and Pro Open are having capacity parity for 2 and 4 strokes. Wonder if anyone will use a big capacity 2 stroke? Just thought this news might add to the discussion.
Cheers, Grahame

This is in line with the AMA which will run 250 2&4 STR together. Yes I am looking forward to the 450 2 strokes showing up to the party.

[tony27]

NZ bought that in a couple of years ago if my memory is right, should mean a new market for big bore kits

[Davey Crocket]

The rest of the world is always a couple of years behind NZ

[SAABCOMBI]

We are getting away from the original question, with my experience l feel that you. should be a aloud to hot  up your 4 stroke pre 75, but their must be a limit and if you go over the capacity limit then it go's into the next capacity class, that is fare.   

[Davey Crocket]

What are you trying to catch Dave....a bus or taxi?...(fare)....see your doctor about upping your medication, cause it aint working!!!...capacity classes are just that Dave...it doesnt matter whether its 1 stroke, 2 strokes, 4 strokes, 10 strokes, its already set and has worked for decades, next you will want a 650 Triumph racing 125's. 2 strokes are relitively cheap to keep running...if we do what you want to do then ol' mate will be building $15,000 motors to win then you will be winging the sports too expensive!!!!....look at the cost of rebuildin modern 250/450 4 strokes, and they already make tons of horsepower....too get that out of an old 4 stroke would cost your retirement fund, not to mention the fact there aint too many people around that have that talent, god bless the ones we have. Now go and have a little lye down and think about what bike you are going to buy and sell next....you do that better.

[lukeb1961]

Now go and have a little lye down

You have to be careful when beating-up on spelling. Especially when you are being as caustic as.. Lye.

[tony c]

I vote to allow four strokes an allowance in capacity (125/150)+(250/290) straight line speed is just that and 125 and 250 class four strokes are slow at that.

[Davey Crocket]

Piss of Tony, your fast enough now.

[Nathan S]

I vote to allow four strokes an allowance in capacity (125/150)+(250/290) straight line speed is just that and 125 and 250 class four strokes are slow at that.

You're kidding, right?
Have you seen what's the gun bike in the road race buckets (I know they're not actually called buckets anymore)? And road racing is far more about sheer power than MX...

Besides, smaller capacity 4-strokes were never a feature of MX back in the day, so why should be bend over backwards to encourage them now?

[Marc.com]

Besides, smaller capacity 4-strokes were never a feature of MX back in the day, so why should be bend over backwards to encourage them now?

Because they are fun to ride and some people enjoy them. The difficulty is making a rule that satisfies everyone..... in some eras, like pre 74 there were 4 strokes that could take it up to same capacity 2 strokes, and at there times there have been performace gaps.

[Ian P]

After time to think and to read others views........
No would be my answer. 
I believe we have it wrong over here (one of the few things that are though  )