Recent content by Desert Silver

That's the location of the original ring locating pins. I found that the 2017 KTM 300 has the same ring pin location so I went with it. The proX is a cast piston so there's a lot less machining required in comparo to a forged piston. I'm in the process of doing heat cycles for the break in. I...

Yes, but the main reason for running a single ring is less friction which allows the engine to rev higher thus producing more HP.

Yeah, everything I've bee finding out is this is normal. I just goes against everything I've ever been taught about 2-smokes. Installing it now and hope to have it running before the weekend. Thanks guys for all of the input. I really appreciate it.

Well, the guy who sold me the piston kit called S3 in Spain and they told him that that's the way the 16 and up are made. I also talked to one of the Factory supported Gas Gas riders at the Costa Mesa Endurocross and he told me he's seen the pistons that way so I guess I'll put it in and not...

Here's the original and the new one. There's a booster port located right where the locating pins are.

Well this ISN'T going to plan. The damn ring locating pins are in the wrong place. The pins are so close in the clocking as to be right over each other. I already installed on the rod and there's a few surface scratches from trying to install the pin clips though they're not on any surface that...

Putting it back together so far has been way easier than trying to take it apart. Just as a side note, my son is selling his 15 Gas Gas EC300E. It's registered for the street in Kali which is rare. PM me if any are interested and I'll supp;y the info. By the way, the main reason he's selling is...

Thanks!! That's what I'll use as my son is going to sell it after I get it back together. Thank You again!!

Is that the Pro X one? wiesco lists a forged piston for the Gas Gas 300 ATV but only list a Pro X cast piston for the EC300

What piston is Gas Gas owners using in their 300's? Checked Wosiner and Wiesco and neither of them list a piston for 2015 300. I use forged pistons when ever possible as I feel they are a much stronger piston. If the cylinder has S3 21113 047 # stamped in the base surface is that a stock...

Messaged RK Tech to ask if the their head mod will work on a 2015 300 Sat. and not a peep so far. My son wants more power without losing bottom end and I feel that head work is the only way. All they listed was the 2018 and 2019.

Ended up doing the same thing but didn't want to have to remove the radiators. Guess I'm spoiled by my old 91 KTM. Even the 04 KTM 300 I worked on was a pita!

Latest and greatest problem. The damn bolts holding the exhaust manifold won't loosen even with an impact driver! The manifold is hitting the frame and blocking the cylinder from being removed. That bike is bound and determined to make me remove the engine. Hoping heat will loosen the bolts up...

Got the cover off using a little heat and a 1 mm feeler gauge to lightly persaud the cover off. Metal gasket???

Any suggestions on how to get it off? I've been thinking heat as the Alu will expand much quicker and farther than the steel. The cover near the back came away from the center cases so was able to put some feeler gauges between the mating surfaces as far forward as I could then tighten the case...