1987 22r rebuild issue

Discussion in 'Engine/Drivetrain' started by bigjstang, Jul 5, 2015.

  1. bigjstang

    bigjstang Newbie

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    Hey guys im new to the forum and do not own said truck but did a rebuild on the engine for the truck and i have some questions.
    so to start it was a 1987 toyota pickup 22r. we pulled the engine tore it down hot tanked sent the block and head for decking and maging. we bought a rebuild kit from the machine shop to insure we had all the parts needed to complete the job right. in school we had a toyota instructor helping us when we couldnt find the information on all data,cause we were ford students we relied on him a bit. during the rebuild we plasty gauges all bearings and checked all piston ring clearances and had the machine shop cut the valaves and valve seats. and assemble the head sence they were rebuilding the rocker arms to put new pads on. the motor was within factory specifications. fast forward to now. my buddy drives the truck just over 30 miles and it locks up cold. we pull it back out and find rod bearing number 2 has actually started to heat weld together we are assuming oil starvation.also we found scaring on some cam lobes on the new cam we had installed and we are stumped. we checked everything. platy gages every bearing and insured everything was to spec. what could cause this we are at a loss. the rebuild kit came with a new oil pump so we dont believe it was a issue of oil pressure due to being oil on the top side of the motor.now we have the issue of needing an new crank cause the one in there is beyond repair and needing at least one rod. but we are planning on doing all new rods to be safe and all new bearings we would just like to know what could cause this issue. cause quite frankly im damn nervous about putting a new crank, rods and bearings and having a repeat of the issue. thanks for all of you who read the whole post and respond. any thoughts or help is greatly appreciated.
     
    bigjstang, Jul 5, 2015
    #1
  3. White Trash

    White Trash Toyotaholic

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    White Trash, Jul 5, 2015
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  4. bigjstang

    bigjstang Newbie

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    all the plugs made it back but one and we are assuming its on us. it was the one on the bottom of the engine inside the oil pan we just noticed it today
     
    bigjstang, Jul 6, 2015
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