i have a 04 ds650 baja x and i need new rings so im just giong to get a new piston and rings what would be the best pistion for it and can u bore out the cylinder. now do i have to pull my motor out of the frame to take the head and jug off i heard a few things that i had to take my motor out becasue head or something hits the frame. thanks for any help

 

An 04 needing rings already…bummer.
You can go CP pistons from RWR or you could go with JE pistons from MrHp.
The CP’s are about 100 bucks or so cheaper. But they are heavier also.
You can get 12:1 compression from either of these builders
You can also get a Pami piston from TheBom. Don’t know how they comare in price though. You would have to PM him and ask.
You don’t have to pull the motor. You can either pull all the motor mount bolts except the rear upper one that is behind the drive sprocket (kinda) and just tilt the motor forward. Or you can remove just the upper motor mount that is connecting the head to the frame. Then use a die grinder or something similar and take a small amount of material off either the head or the frame weld.

As far as which one is the best piston. I personally run and like the 14:1 JE that MrHp sells.
At the same time I had no complaints about the RWR piston when I ran it either. But the torque is much better with the 14:1. But the race gas costs about 3 bucks a gallon more than premium pump gas too.

 

If you think you just need new rings and a piston, there are lots of stock size pistons available. The cylinder on the DS does not have a sleeve. Its nikasil plated on on the aluminum cylinder. Unless you are really going to go for it with some bucks for a big bore, you may want to consider staying with the stock size. There are a few guys in here that have slightly increased the cylinder and piston size.

 

When my cylinder needed attention. I sent it to RWR and they sent it off to have it re-nikasiled. At that time it was around 165 bucks I think. That was about a year or so ago.

 

thanks alot thats what i needed to no now if if could get some websites like for je piston and pami pistons thanks alot

 

Here ya go
TheBomb
RWR
MrHp

 

What makes you think you need rings? What kind of probs are you having?

Go for the mrhp superlight, its got good rings [img]i/expressions/face-icon-small-happy.gif[/img] .
JUstin

 

How many hours does your DS have on it that it needs rings already ?

I have an 04 as well[img]i/expressions/face-icon-small-sad.gif[/img]

 

well im not sure how many hours are on it but when the trails were open we rode dang near every day prolly like 4-8 hours a day and ther is no compression itll start when u pull start it and thats what my old raptor did to and it was the rings. does anyone no if they make a JE piston for the ds and if so where can i find one

 

Yes they do and MrHp is the one to go to for the JE pistons for the DS