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H2 piston options
http://kawi2strokes.com/forum/viewtopic.php?f=2&t=11650
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Author:  seadoodr. [ Thu Apr 21, 2016 7:21 pm ]
Post subject:  H2 piston options

Looking for piston options other than wiseco. I am reading a lot of good things about wossner but I have no experience with them. Who's running them and how do you like them? Pros and cons appreciated.

Author:  Ja-Moo [ Thu Apr 21, 2016 7:40 pm ]
Post subject:  Re: H2 piston options

Best pistons on the market! Totally changed over to them as soon as they were available, and the only pistons I recommend to my customers. :thumbup:

Author:  Jim [ Thu Apr 21, 2016 8:00 pm ]
Post subject:  Re: H2 piston options

Wössner pistons are working very well in my H2, even though I cut gaping slots in them.

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Author:  seadoodr. [ Fri Apr 22, 2016 5:57 am ]
Post subject:  Re: H2 piston options

Ja-Moo wrote:
Best pistons on the market! Totally changed over to them as soon as they were available, and the only pistons I recommend to my customers. :thumbup:

What clearance do they recommend?

Author:  Jim [ Fri Apr 22, 2016 7:42 am ]
Post subject:  Re: H2 piston options

0.0027" (0.07mm)

Author:  seadoodr. [ Fri Apr 22, 2016 9:24 am ]
Post subject:  Re: H2 piston options

Thanks for the input guys, I think I'll give them a try.

Author:  Retro 3 [ Fri Apr 22, 2016 7:36 pm ]
Post subject:  Re: H2 piston options

Jim wrote:
Wössner pistons are working very well in my H2, even though I cut gaping slots in them.

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Hey Jim,
did you weigh your pistons before (and after) ?
Just curious, the difference.
Been Pondering about how to balance a Triple

Author:  Jim [ Fri Apr 22, 2016 8:08 pm ]
Post subject:  Re: H2 piston options

Shane, I probably weighed them, but it's been a few years now and I'm sure I don't have the information, sorry. But obviously you can't cut slots for balance purposes! Usually you can remove a little material from places like the wrist pin boss, if they make a balancing pad there, or the underside of the piston crown. The first time I made my three pistons the same weight, which was around 1979, I had to grind the underside of the crowns of the heavy ones.

Author:  Ja-Moo [ Fri Apr 22, 2016 9:09 pm ]
Post subject:  Re: H2 piston options

The Wossners are great, I just drilled two sets and they were still spot on weight wise. :thumbup:

Author:  Retro 3 [ Fri Apr 22, 2016 9:40 pm ]
Post subject:  Re: H2 piston options

But obviously you can't cut slots for balance purposes! Usually you can remove a little material from places like the wrist pin boss, if they make a balancing pad there, or the underside of the piston crown. The first time I made my three pistons the same weight, which was around 1979, I had to grind the underside of the crowns of the heavy ones.[/quote]

Jim, Here are a few pics of my Balancing Room:
An Ls9 from a ZR1 Vette. Had to add 200 grams of tungsten to get it to less than 3 grams of imbalance.
I've balanced numerous V8, V6, Inline 6 and 4's.
But never a Triple.
I know that the slots aren't for balancing but, it does change the rotating weight.


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