Concerns about Supertech pistons
09-18-2009, 10:35 AM
#81
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Just for comparison's sake. Wiseco 84mm "10.0-10.3:1".
They are more different than I remembered. Looks like there is more meat in the area that fractured on yours and the dome has smaller circumference but is taller. They're actually pretty radically different than everything I see here.
Keith, if you read this and get a moment, could you post pictures of the FM Wisecos?
They are more different than I remembered. Looks like there is more meat in the area that fractured on yours and the dome has smaller circumference but is taller. They're actually pretty radically different than everything I see here.
Keith, if you read this and get a moment, could you post pictures of the FM Wisecos?
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09-18-2009, 03:49 PM
#82
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I just got confirmation from Supertech based on some pictures I sent them of my piston. These are 9.5:1 pistons...
Belfab...
Now I need to call Belfab and tell them they messed up. Anyone care to lay odds on getting anything other than a BS excuse or an empty apology?
Belfab...
Now I need to call Belfab and tell them they messed up. Anyone care to lay odds on getting anything other than a BS excuse or an empty apology?
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09-18-2009, 04:01 PM
#83
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dont u think its a little late?
my pistons came with an invoice with the partnumber and description
on the piston packaging there was a sticker with the part number.
my pistons came with an invoice with the partnumber and description
on the piston packaging there was a sticker with the part number.
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09-18-2009, 04:02 PM
#84
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You see, that is the thing... I would have checked that as soon as I opened the box. I suspect they were mislabeled. He claimed when I talked to him that they sort the pistons by weight to match them up. Could have happened then. Either that or I had a major brainfart and missed it.
At any rate, I am not sure 1/2 a point of CR is enough to get seriously pissed off about. Now if they were 11:1 or something stupid...
At any rate, I am not sure 1/2 a point of CR is enough to get seriously pissed off about. Now if they were 11:1 or something stupid...
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09-18-2009, 04:11 PM
#85
You see, that is the thing... I would have checked that as soon as I opened the box. I suspect they were mislabeled. He claimed when I talked to him that they sort the pistons by weight to match them up. Could have happened then. Either that or I had a major brainfart and missed it.
Might be your only proof, a zoomed in pic of an incorrect part number.
So does this mean you're still planning on port WI since that's no longer the conclusive failure theory?
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09-18-2009, 04:12 PM
#86
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Jim Belfiore is a piece of work. He'll do nothing.
You might try the vendor for direct replacement. I doubt they are sold with any warranty at all, but it couldn't hurt I guess.
You might try the vendor for direct replacement. I doubt they are sold with any warranty at all, but it couldn't hurt I guess.
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09-18-2009, 04:14 PM
#87
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I have to go back and look at my photos to see if I took a picture of the boxes the pistons came in. I am not sure that I did. The boxes are long since disposed of. It is always the stuff you throw away you end up needing later...
I am still definitely doing the port WI. I have all of the parts, and already drilled and tapped the manifold. I even found a new Aquamist HSV that someone was selling cheap so I'll have valve controlled proportional WI. It should be a nice system.
I am still definitely doing the port WI. I have all of the parts, and already drilled and tapped the manifold. I even found a new Aquamist HSV that someone was selling cheap so I'll have valve controlled proportional WI. It should be a nice system.
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09-18-2009, 10:01 PM
#91
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I believe it is an indicator on which way to install the piston. One should be able to tell by looking at the valve pockets but it is there anyway. The wiseco and the supertech both have it.
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09-18-2009, 10:22 PM
#93
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Yep. The dot points towards the front of the engine. Guess they figured something simpler than gauging the relative size of the valve pockets would be handy.
Hmm. Where have I seen that exact piston before?
Hmm. Where have I seen that exact piston before?
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