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Wrenchin’ Wednesday: how to build a DIY piston stop for $5

Setting Top Dead Center (TDC) is a major step during engine work as it is the point at which all mechanical events are timed to. 

We're going show you how to build a quick and cheap piston stop using a generic spark plug anti-fouler, which costs under $5. These tools can be found online and in many speed shops, but are becoming less common in local parts houses, so we'll dive right in on a DIY solution!


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So @extech your timing marks are on the exhaust stroke?

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