A device to detect when a piston has reached an upper limit of a piston stoke in a reciprocating engine, and simultaneously detect a valvetrain component position on said reciprocating engine, whereby a position of said piston and said valvetrain component is relayed to the user by instruments attached to said device comprising:
- a piston gauge having an elongated body, whereby said elongated body has a grip surface that is configured to insert and remove said piston gauge from a combustion chamber access hole into a piston cylinder and/or a combustion chamber as a single member;
- a body having a top end, a bottom end and a body access hole through an entire length of said body and further including at least one disconnected surface exposing an interior of said body;
- a gauge mount with an external thread to attach to said top end of said body and a through hole to receive a dial indicator, whereby said dial indicator is secured in said through hole by a clamping force applied by a first thumb screw;
- said dial indicator is configured to display movement of said piston as said piston reaches a highest point of a piston stroke;
- said movement translates into position by an indicium of markings on a face of said dial indicator;
- an indicator shaft adjuster located between said top end and said bottom end of said body;
- said body having said through hole, extending along said entire length of said indicator shaft adjuster, whereby said through hole is configured to receive said indicator shaft adjuster;
- a plug adapter having a through hole along a length of said plug adapter, that is keyed at a first end of said plug adapter, and further including a threaded surface and a plug thread tip on said plug adapter, whereby said plug thread tip is configured to be inserted into and out of said combustion chamber access hole of said piston cylinder and/or said combustion chamber;
- a collar secured to the bottom end of said body that is configured to accept said keyed end of said plug adapter, such that said collar is securable to said plug adapter to said bottom end of said body;
- an indicator shaft having a predetermined length having a shaft tip and a shaft end that is slidably fitted through said indicator shaft adjuster and said plug adapter, whereby said shaft tip extends beyond a planar face tip to contact said piston, whereby movement of said piston is transferred to said indicator shaft and then to said dial indicator, whereby said movement translates into position of said piston;
- two extension shafts that are configured to be secured onto said elongated body, whereby said two extension shafts are disposed in a multitude of positions;
- two valvetrain gauge assemblies that are configured to secure onto each of said two extension shafts, whereby said two valvetrain gauge assemblies are disposed in a multitude of positions;
- and
- each of said two valvetrain gauge assemblies is configured to detect a position of said valvetrain component, whereby said position of said valvetrain component is translated by an indicium of markings on said dial indicator.