Do you save your speeds for big races or do you club race with them?

I've seen a few guys now running Speeds at club races on a very slippery track. On a slippery, dusty track, with only 1 stop-15 minute mains, wouldn't it make sense to run a RB Junior 9 or similar?

$450-500 to go clubbing for 10 gallons seems like a waste? I draw the line at $350, but if a Speed could really give me ahuge advantage at big races..... That really isn't the case though. Its really not any better than a +4 or Jx21 or WS9?

The speed IMO is what the Vspec should be, but I guess thats where the Ninja comes in?

You do not need pinch to run, only compression, mechanical pinch will only slow your engine down... if has good compression when warm then it is good, if it still has pinch then it is still not run in.

The os speed is the ultimate race engine. It balances mileage with top end and tons of bottom end. All that plus the super ohh so smooth powerband that only a speed can deliver. They are pricey but you get what you pay for. Will owning a speed alone make you win more prob not, but if you want the latest and greatest tech packaged into one he'll of an engine then the speed is for you. I was at a 2 day harvest fest this weekend and my pit guy said it best. My buggy is crazy fast. Only a speed will give you crazy fast. :cool:

whats the difference between the 21J and 21JS carb's I know ones for the world II Im talking about performance / parts.

I think it might just be where the idle screw is one is below the carb (older version) and the other is above the carb, for easier adjustment.

This is one of the funiest post I have ever read, OS should use it as an add for their engine!!!

The only difference I know of is the aluminum carb insert. Other than that the two carbs are exactly the same. They both have the updated idle location and use the same carb body. I think the S is just to indicate it is for the speed engine. Even the body on the 21JS just has 21J molded into it. So yeah, there is no difference.;)

Thanks everyone