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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:-) |
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02-15-2016, 02:29 PM
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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:-) |
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02-16-2016, 10:40 AM
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To you professionals, how much, if any, can you remove on the skirt?
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02-16-2016, 10:21 PM
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Air Medal or two
Join Date: Jul 2003
Location: cross roads
Posts: 14,086
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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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D troop 3/5 Air Cav,( Bastard CAV) and 162 Assult Helicopter Co- (Vultures) South of Saigon, U Minh Forest, Delta, and all parts in between |
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02-16-2016, 10:57 PM
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1977 Porsche 911 Targa 2.7s
