anyone port a gasser head

[jerzram]

I just purchased a 250ec I've had 2 strokes my whole life and did my own port and polish work but I've never owned anything with a power valve. I was wondering if anybody had done a gasser head and if its worth doing. Thank u

 

[iamovru]

Trey at Wildcat Motorsports did my 09 KTM 300XC and I did notice more low end torque. He does Gas Gas and Mike@Cycleplayground also does them. I would personally get the jetting sorted and then worry about the head if needed.

 

[thejackrabbit]

I smoothed out/cleaned the exhaust port and intake tracts, I did notice more low end and the bike ran way better, but I also did new rings and reeds at the same time, I also cleaned the power valve

here is a picture of half way through

notice that I have the power valve removed when porting

 

[jerzram]

Looks good I'm thinking of doing it since I have to rebuild anyway the previous owner snapped a ring so I'm ordering a rebuild kit and have to have the cylinder replated so now is as good as anytime to do the cylinder cleanup.

 

[Zman]

There is a 300 cylinder and head on ebay for reasonable money. You can convert your 250 to a 300 if you like.

 

[Jakobi]

I've had both heads set up on my Gassers. Squish band clearance and angles as well as compression ratio adjusted. Cleaned up the ports on my 300 cylinder as they had a few casting dregs and polished the exh port. Never bothered on the 250 cylinders.

 

[jerzram]

Thanks for the replays will definitely check out eBay thank u and my other question is I have an 01 are the cylinders the same for certain years or can I use one from let's say an 05, does it have to come from an 01

 

[savage sausage]

porting

check out my 'project el diablo' in the united kingdom section (page 4 ) and you will see what i did

sorry I dont know how to copy the pictures from there and post on this one

 

[jerzram]

Thank you I'll find it. These forums are very usefull

 

[zeuszuki]

When it comes time for a bottom end rebuild the cases are going to get some serious love, there is a bunch of power hiding in there. My cylinder measured up pretty well and the casting is clean .

 

[jerzram]

Do u have any pics of the lower cases done or what is done to pull more power.

 

[jerzram]

I was wondering if someone can tell me what the SL on my piston means I tore it down and while inspecting the piston it reads 66.33 SL any idea what the SL stands for, thank you