bore 34 until it substantially butts up against the front shoulder 35 the rear tube 50 being further guided into the second enlarged bore 34 by the front chamfer 33 transition from the first enlarged bore 32 to the second enlarged bore 34 fig3 and 4 once in this substantially fully collapsed state as illustrated in fig7 which in the exemplary embodiment is a length of approximately 15 u00be u2033 or any such intermediate collapsed state as necessary for insertion into the engine block 90 u201c from above u201d and with the opposite ends lubed as with white grease or the like the pipe apparatus 10 is then lowered into the engine block 90 such that the proximal portion 24 fig3 of the front tube 20 and the distal portion 62 fig4 of the rear tube 50 having the crush ring 70 and the rear o ring 80 thereon are substantially adjacent the respective front and rear engine block holes 92 94 next the rear or distal portion 62 of the rear tube 50 is inserted into the rear opening 94 of the engine block being careful to orient the marking 76 fig2 and 6 of the crush ring 70 facing substantially upward as shown then holding one of the front tube 20 and rear tube 50 in each hand the front tube 20 is slid proximally until proximal portion 24 of the front tube 20 begins to enter the front opening 92 of the engine block 90 and the thread portions 30 56 fig3 and 4 of the front and rear tubes 20 50 respectively engage and then the front and rear tubes 20 50 are hand turned relative to one another so as to begin to expand the pipe apparatus 10 and cause the front or.