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The Terminator
Engine/Tuning
Need advice on pistons
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<blockquote data-quote="badcobra" data-source="post: 16417317" data-attributes="member: 20798"><p>There are many downsides to going with an off the shelf piston.</p><p></p><p>1. You are limited on sizes in most cases to stock bore or .020" over. This requires you to bore the block more than necessary to fit the piston. Should keep the bore as close to stock bore as you possibly can for strength.</p><p>2. The OTS piston varieties are typically compromised designs for running any type of combo. Not great for boost, better for NA</p><p>3. It's virtually impossible to get the relevant piston specifications. How thick are the skirts? What is the crown thickness etc?</p><p>4. Most come with an inadequate wrist pin for a high HP build requiring you to spend hundreds of dollars on top of the price of the pistons for the right pin. A 9310 pin is not sufficient.</p><p>5. The ring packs they may come with our substandard, a one size fits all combo.</p><p></p><p>I would recommend you just get a Gibtec custom piston. You can order it with any piston pin and Total Seal ring pack. Call my brothers shop, they are a direct dealer and get better pricing than calling Gibtec directly and have done tons of mod motor piston designs. Jonny @ Finish Line 720-201-1834</p></blockquote><p></p>
[QUOTE="badcobra, post: 16417317, member: 20798"] There are many downsides to going with an off the shelf piston. 1. You are limited on sizes in most cases to stock bore or .020" over. This requires you to bore the block more than necessary to fit the piston. Should keep the bore as close to stock bore as you possibly can for strength. 2. The OTS piston varieties are typically compromised designs for running any type of combo. Not great for boost, better for NA 3. It's virtually impossible to get the relevant piston specifications. How thick are the skirts? What is the crown thickness etc? 4. Most come with an inadequate wrist pin for a high HP build requiring you to spend hundreds of dollars on top of the price of the pistons for the right pin. A 9310 pin is not sufficient. 5. The ring packs they may come with our substandard, a one size fits all combo. I would recommend you just get a Gibtec custom piston. You can order it with any piston pin and Total Seal ring pack. Call my brothers shop, they are a direct dealer and get better pricing than calling Gibtec directly and have done tons of mod motor piston designs. Jonny @ Finish Line 720-201-1834 [/QUOTE]
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