Opinions on Namura pistons..

[fastrthnu]

Ive always dealt with wiseco pistons, even in the cars, but I can get a good deal on these namuras. are they worth a crap. Im not going to be runnin more than 165 psi in this motor (most of the time ) and run em cool. its onlt about a $50 difference though not to get the forged. If I had the time, I was going to build a stroker, which I will, but I cant wait any longer to ride. My roller will be done next weekend, and I need to get the top of this thing done.

[NYUK]

i have heard stories about them banging into coolheads. i would stick with what you know.skimping on an internal part could be costly in the long run.

[LiftdT4R]

I'll second that, I've never ran them, but I've heard enough bad things to keep me away.

[Bansh-eman]

i dont have any first hand experiance with them but i have heard enough bad things about the skirts breaking that I'll just stick with weisco

[91banshee]

Ive always dealt with wiseco pistons, even in the cars, but I can get a good deal on these namuras. are they worth a crap. Im not going to be runnin more than 165 psi in this motor (most of the time ) and run em cool. its onlt about a $50 difference though not to get the forged. If I had the time, I was going to build a stroker, which I will, but I cant wait any longer to ride. My roller will be done next weekend, and I need to get the top of this thing done.

hey man .. i have built a few motors with those casue it wascheap and no body wanted to spend and money on there motor . i would run wiseco for sure , those pistons look like someone had them melted out of a pot , plus im gona be riding with you in december and when your tryen to stay on my tail your motor might melt :biggrin: but serioulsy i would take your time and do it right , and the 4mil would be nice ,

[BigRed350x]

They suck. I used them way back in the day on my 87. They shattered and fucked me out of a crank AND cylinders. They are cheap for a reason.

[fastrthnu]

Well, thats answered.

[locogato11283]

stick to wiseco,,

[NYUK]

stick to wiseco,,

truer words could not be spoken. theres always wiseco vs. pro x arguement also. i had a pro x crack from the dome all the way through the wrist pin. and another shatter into 1,000 pieces at 111 mph and still did 11 seconds at the end of a quarter mile run. needless to say it was all wiseco from there on out.

[duecebanshees]

Namura and pro-x pistons are cast pistons just like the stock ones. Wiseco pistons are forged pistons. The wiseco's seem to be a much more reliable piston in my opionion. I do have a friend that bought the namuras for the same reasons as referred to in previous posts ($$$). I do not think the cast pistons will take as much abuse as the forged wiseco's do. That is probably why we see as many broken skirts on cast pistons as we do. I have never had a wiseco skirt break off. I have melted a few down due to running them to lean. LOL But, that was my fault. I will personally stick with wiseco pistons. Hope you got so useful info for the posts. :biggrin:

[2bzy2p]

Namura and pro-x pistons are cast pistons just like the stock ones. Wiseco pistons are forged pistons. The wiseco's seem to be a much more reliable piston in my opionion. I do have a friend that bought the namuras for the same reasons as referred to in previous posts ($$$). I do not think the cast pistons will take as much abuse as the forged wiseco's do. That is probably why we see as many broken skirts on cast pistons as we do. I have never had a wiseco skirt break off. I have melted a few down due to running them to lean. LOL But, that was my fault. I will personally stick with wiseco pistons. Hope you got so useful info for the posts. :biggrin:

the namura piston have a nylon coating on them which is for supossed less friction but it actually creates and holds heat and after due time is never good,,I had one experience with a namura piston and it was junk it did not eve fit over the rod ..THEY SUCK