General questions for newbie

[TRW Motorsport]

Hello to all,

I will start by saying that I am 18 years old and just purchased a 2003 YZ85. I am not sure on how much time the piston has but am going to throw a top end in just for good measure. The bike has all the original jetting, tires, everything so I dont think the bike was ever raced. The tires even look pretty descent.

First things first: Shifting, I will mostly be using this bike as a pit bike at my car races but do intend to track it sometime in the future. I have been using the clutch for up and down shifting, is this the best choice? I know you can get by without using it but I dont want to be replacing dogs every other race...

Secondly, I am 145 pounds and ride an 85, If I do track it, will I be too heavy for the suspension? I have never done MX so wont be flying the thing, just having fun and learning something new....

Any advice is greatly appreciated!

Thanks,

 

[Ol'89r]

If you use the clutch your gearbox will last much longer.

At 145 lbs you are a little big for an 85. If you do race it, you will be racing against kids that weigh about 60 lbs. Do the math. :whoa:

Sounds like it would make a good pit bike. :cool:

 

[FruDaddy]

Come on 89er, those kids can weigh up to about 120 (mines roughly 80).

For a 145 pounder, the springs will have to replaced if it is to be ridden on a track. Neither hard, nor particularly expensive. You didn't mention your height, but if you are over 5' tall, you should also consider a taller handlebar and a big wheel kit if it still has a 17 inch front. Since the is primarily a pit bike, and has no power valve, you might also consider a heavier flywheel and steel rear sprocket. There are also several other woods riding mods that will tame the powerband for pit use.

 

[TRW Motorsport]

Yep I am over 5' just shy of 6' actually :bang:

I have heard that for anything on the bottom end, NAPE needle, 3.5 slide, and 135 main.. Ill give it a shot this weekend.

Thanks,