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Join Date: Jan 2010
Posts: 41
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Secondhand pistons and cylinders, need to hone the bores?
Hi There
I am just about to start putting my 993 engine back together. I bought a set of 36k mile pistons and cylinders to replace mine and was wondering if I need to deglaze the bores with some scotchbrite. They do not look glazed and the cross hatching is clearly visible. I am using the rings that came with the set, but are replacing the clips that have been removed from the pistons (one side only). I have the rings off of the pistons and have cleaned everything up nicely. All the best Berni |
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Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,503
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Break the glaze with some scotch brite, wont hurt anything.
Bruce |
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Join Date: May 2003
Posts: 3,346
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I second the idea of scuffing them. I like using the old rings as well, especially with low miles.
-Andy
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72 Carrera RS replica, Spec 911 racer |
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Hi Guys
Many thanks for the replies. I will scuff them up. Berni |
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Try not, Do or Do not
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Soap and hot water, ScotchBrite (I like red) and new rings.
A new set of Goetze rings ($140 or so) is cheap insurance. Pelican Parts - Product Information: 930-103-963-00-M42
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Henry Schmidt SUPERTEC PERFORMANCE Ph: 760-728-3062 Email: supertec1@earthlink.net |
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The time I bought brand new Goetze rings, they had bigger end gaps than the old rings. They were at the wear limit spec. brand new!
-Andy.
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72 Carrera RS replica, Spec 911 racer |
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Try not, Do or Do not
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That is very common with off the shelf ring sets. You might try buying individual rings for Mahle Motorsport or Andial. Cost is a little higher but size tends to be closer.
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Henry Schmidt SUPERTEC PERFORMANCE Ph: 760-728-3062 Email: supertec1@earthlink.net |
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Thanks Henry!
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72 Carrera RS replica, Spec 911 racer |
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Join Date: Jan 2010
Posts: 41
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Hi There
I did not actually use any soap and water with the scotchbrite. Just used it dry. Is that OK? Tks Berni |
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Join Date: May 2005
Location: Loxahatchee, florida
Posts: 2,894
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Soapy water washes away the grit, and also breaks up the varnish in the grooves. When i did mine i cleaned them with a red scotchbright and soapy water then put them in the dishwasher. No not married so no problems with the wife *****ing about car parts in the diswasher, or oven for that matter lol.
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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's. 2019 Silverado 6.2L |
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Join Date: Jan 2010
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Hi Ken
Lucky you....... I so wanted to put my cam towers in the dishwasher. Not worth the risk in my house though. Berni |
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