Dose anybody know where I can buy HC piston?

All I can find is 1:11

if some 1 can help with that it will be great

If you can't find the HC piston, you might look into an early KLX250 head. It is reported that the combustion chamber volume is smaller than on the KLX300.

Ride on
Brewster

brewster, on 06 February 2012 - 08:15 AM, said:

Its very expensive compare to piston

brewster, on 06 February 2012 - 08:15 AM, said:

I had a first generation 94 KLX250 head I was going to use on my 351 project. The water jacket holes don't line up properly.

The 351 kit is a good deal the only problem is that u r so close to the water jackets its prob not the best for max engine life. But it really screams.

crash money, on 29 February 2012 - 07:22 AM, said:

Do you have proof of the risk in relation to max engine life, or is this a general opinion? There are a lot of high-mileage 351 kits running strong out there.

Ive built two of them. One was riden supermoto and I understand thats hard on a bike. But 260 miles piston through jug bad day. That was my brothers. Second was a supermoto set up that was a daily driver 19000 and cylinder cracked. And i am not dumb I can build a motor with the best of them. I have a double major in mechanics. Specialized in k tech Suzuki yahama BMW.

Ive built two of them. One was riden supermoto and I understand thats hard on a bike. But 260 miles piston through jug bad day. That was my brothers. Second was a supermoto set up that was a daily driver 19000 and cylinder cracked. And i am not dumb I can build a motor with the best of them. I have a double major in mechanics. Specialized in k tech Suzuki yahama BMW.

Why go for a HC piston? as its only part of the equation.

crash money, on 01 March 2012 - 07:18 PM, said:

And that's not a failure that should ever happen on a standard 300 or 312 ...maybe it's a slightly higher possibility on a 330?
Has anyone here ever had a 330 fail?

I know as stated earlier the 300 to 330 r bulletproof

My 331 has about a 1000 miles on it with about 500 of them being mountain trail riding and it is still going strong. Probably not enough time to pass judgement but a good start. Compression ratio is 12:1.