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seadoodr.
 Post subject: H2 piston options
PostPosted: Thu Apr 21, 2016 7:21 pm 

Joined: Thu Mar 10, 2016 5:06 am
Posts: 41
Location: Martinsville IN
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.
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Ja-Moo
 Post subject: Re: H2 piston options
PostPosted: Thu Apr 21, 2016 7:40 pm 
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Joined: Tue Jun 07, 2011 6:37 am
Posts: 10460
Location: Rio Rancho, New Mexico
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:

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........
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Jim
 Post subject: Re: H2 piston options
PostPosted: Thu Apr 21, 2016 8:00 pm 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 10014
Location: North Central NC
Wössner pistons are working very well in my H2, even though I cut gaping slots in them.

Image

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If it surges, that's normal, upshift.
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seadoodr.
 Post subject: Re: H2 piston options
PostPosted: Fri Apr 22, 2016 5:57 am 

Joined: Thu Mar 10, 2016 5:06 am
Posts: 41
Location: Martinsville IN
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?
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Jim
 Post subject: Re: H2 piston options
PostPosted: Fri Apr 22, 2016 7:42 am 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 10014
Location: North Central NC
0.0027" (0.07mm)

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

Joined: Thu Mar 10, 2016 5:06 am
Posts: 41
Location: Martinsville IN
Thanks for the input guys, I think I'll give them a try.
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Retro 3
 Post subject: Re: H2 piston options
PostPosted: Fri Apr 22, 2016 7:36 pm 

Joined: Fri Jun 10, 2011 6:24 am
Posts: 635
Location: Hoover, Alabama
Jim wrote:
Wössner pistons are working very well in my H2, even though I cut gaping slots in them.

Image


Hey Jim,
did you weigh your pistons before (and after) ?
Just curious, the difference.
Been Pondering about how to balance a Triple
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Jim
 Post subject: Re: H2 piston options
PostPosted: Fri Apr 22, 2016 8:08 pm 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 10014
Location: North Central NC
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.

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Ja-Moo
 Post subject: Re: H2 piston options
PostPosted: Fri Apr 22, 2016 9:09 pm 
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Joined: Tue Jun 07, 2011 6:37 am
Posts: 10460
Location: Rio Rancho, New Mexico
The Wossners are great, I just drilled two sets and they were still spot on weight wise. :thumbup:

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........
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Retro 3
 Post subject: Re: H2 piston options
PostPosted: Fri Apr 22, 2016 9:40 pm 

Joined: Fri Jun 10, 2011 6:24 am
Posts: 635
Location: Hoover, Alabama
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.


Image
Image

Image
Image
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