A device to detect when a piston has reached the upper limit of said piston stoke in a reciprocating engine, and simultaneously detect valvetrain position on said reciprocating engine, whereby position of said piston and said valvetrain can be 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 an 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 an 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 first thumb screw;
- said dial indicator is secured by a clamping force applied by the said through hole;
- a dial indicator on said top end of said body, that displays 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 a top and a bottom end of said body;
- said body having said through hole, along said entire length of said indicator shaft adjuster, whereby to receive said indicator shaft;
- 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 an 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 said shaft tip and said 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 a valvetrain, whereby said position of said valvetrain is translated by an indicium of markings on said dial indicator face.