Anyone know anything about these pistons? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 06-25-2004, 12:03 PM
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Anyone know anything about these pistons?

Hello,
I was wondering if anyone knew anything about these pistons and if they are any good or not? Does anyone have any exsperience with them or problems?

400 Pistons

Thanks

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Old 06-25-2004, 12:07 PM
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they seem to be good pistons alot of compresion so you couldnt run pump gas but they are hyperuetic mind the spelling lol so they are alot better off then cast pistons
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Old 06-25-2004, 01:05 PM
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Hello,
I was not really planning on running on pump gas, I was just wondering if they were crap like KB pistons, or are they a good deal or not?

Thanks
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Old 06-25-2004, 01:06 PM
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They are a very good, high quality, hyper-eutectic piston. The biggest problem would be finding a standard size bore, 400 block.
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Old 06-25-2004, 01:35 PM
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Hello,
Does anyone know where I can buy a set of pistons like this? If you know please tell! I want these pistons but in 400 .030 over!

Thanks

Trent
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Old 06-25-2004, 01:39 PM
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can't you use oversized rings? with standard bore pistons?
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Old 06-25-2004, 01:47 PM
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NO, NO, A THOUSAND TIMES NO!!!!!!
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Old 06-25-2004, 03:19 PM
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you should set up an engine with standard pistons and oversized rings and tell us what happens...

just kidding

tbw
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Old 06-25-2004, 06:08 PM
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Hello,
What place can you buy these pistons, these are the ones! Does anyone know? I need help!

Thanks

Trent
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Old 06-25-2004, 09:28 PM
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These pistons appear to exactly match (including the logo's on the side of the skirt!) the KB-claimer pistons. I just removed these out of a 383. Personally after looking at these pistons, and having my experience with the KB Claimer Hypereutectics, I wouldn't touch them unless I was building some low hp engine. You must use a wide ring gap with these pistons or you will swallow the crown of your piston.

Please check out the KB web page the part number you are looking for is 3416H. You will notice that even the compression numbers are exactly the same. I would bet that these pistons are cast by the same manufacture for both KB & Clevite.

I noticed that the price is $56 for 8 (and about all they are worth). They are $19 a piston new out of Jegs and available in .030, .040, & .060 over.

If you are going to a high compression race gas engine I would certainly go with forged pistons. Cheap Hypereutectics will turn to BB's in that kind of engine.

When you up the actual compression to over 10.5:1, use a blower, or NO, forged is the best way to go.
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Old 06-25-2004, 11:15 PM
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Yup, Wings is right on the part about the casting being the same. The material is different, lower silicon content, but the casting is the same.

I wouldn't use them for a stock rebuild. I used a set of K-B pistons in my engine and I now regret it. Less than 10K miles on them and the skirts are slapping already. If you're on a budget use Speed Pro hypereutectics, at least the FM244 alloy they use has decent strength. They are heavy as hell though, about 40 grams more than the K-B's.

H616P30 is the part number. Flatlander racing sells them for $270 and change.

Larry
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