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Alan L's Avatar
 
Join Date: Apr 2006
Location: New Zealand
Posts: 5,278
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Hmm, the professional also has some experience of 'what not to do'. Which can be useful :-)
Thanks for the help. Finished the pins just now - everything is now just 2gm short of the target piston/pin. Hopefully downhill slope now.
Don't think I would want to do that for a job - near a day on end of grinding stones.
Regards
Alan

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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-)
Old 02-15-2016, 02:29 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #41 (permalink)
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Alan L's Avatar
 
Join Date: Apr 2006
Location: New Zealand
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All done. Down to 1gm tolerance. 40-45 gm removed. Now at the low end of the lightest weight group.
Wife not home at moment - so a good scrub in hot water and into the oven to dry off.
The 'stock' piston/pin is on the right in 2nd pic. I ended up taking a fraction off that piston too so it was in balance with the rest.
Afterburn - thanks for your patience and advice.
Regards
Alan
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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-)
Old 02-16-2016, 10:40 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #42 (permalink)
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safe's Avatar
 
Join Date: Feb 2004
Location: Sweden
Posts: 4,148
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To you professionals, how much, if any, can you remove on the skirt?
Old 02-16-2016, 10:21 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #43 (permalink)
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afterburn 549's Avatar
 
Join Date: Jul 2003
Location: cross roads
Posts: 14,082
I dont know what is "safe" But I have removed more than what looked safe a few times and its all still running .
I am talking Long stroke stuff with high piston speed too.
The long answer is style of pistons as there are some almost skirtless ones to antique ones with all sorts of material.
One has to use their head ,be artsy fartsy , follow contours , deburr everything,
It would be nice to be able to say remove here and here.
It more EZ to say" not here and here" as there are so many styles and applications
There is a thrust side of pistons. (off set pins) there are high loaded areas .

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Old 02-16-2016, 10:57 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #44 (permalink)
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