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 Post subject: Leckich piston question
PostPosted: Tue Mar 07, 2017 10:13 am 
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Joined: Mon Jan 26, 2015 10:11 am
Posts: 474
Running leckich setup in Oddy. Have paperwork on jug and piston. Pulled top end down to testing noticed piston doesn't have hole like paperwork says it needs. Just wanting to verify. Here's pic of paperwork. Piston is wiseco 81.5 but without hole shown on paperwork. Will this make performance difference?


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PostPosted: Tue Mar 07, 2017 10:38 am 
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Joined: Mon Jun 10, 2013 8:59 am
Posts: 793
That looks like the holes are to lighten the piston, I don't think the wiseco pistons have that.


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PostPosted: Tue Mar 07, 2017 10:56 am 
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Didn't know if it helped on intake charge like on the pilot piston if so my machinist friend could do my wiseco like it shows. Just didn't know if any noticeable performance gain.


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PostPosted: Sun Mar 12, 2017 10:57 am 
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Joined: Mon Jan 26, 2015 10:11 am
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Any ideas on this? Going to hone and put new rings in this upcoming week. Paperwork for motor (( Internal Combustion Engine ? )) shows hole and placement in piston. Should I modify piston or not? Any performance increase?


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PostPosted: Sun Mar 12, 2017 3:38 pm 
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Joined: Tue Jan 17, 2012 3:19 am
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Location: Hope, B.C Canada
70 views and only 3 comments, and two of them were yours. Nobody commenting cause I think nobody is sure. I don't know either. But the way I see it, if you have a drawing and it is for your Engine then why not do what the Engine builder intended ?? Could it hurt ?? It works on a Pilot Engine.


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PostPosted: Sun Mar 12, 2017 4:36 pm 
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Joined: Mon Jan 26, 2015 10:11 am
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I agree. Gonna do it and see if I see any noticeable difference. Surely I will because pilot is done this way!


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PostPosted: Sun Mar 12, 2017 9:54 pm 
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Joined: Mon Dec 15, 2003 2:40 pm
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Location: Chicago
don't forget to relieve the exhaust bridge.


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PostPosted: Thu May 25, 2017 9:53 am 
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Joined: Thu May 25, 2017 8:36 am
Posts: 6
Some of his engines are a piston port design. While others have reed valves. The piston "port" would need to be machined into the new piston if yours doesn't have a reed valve.


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