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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Diesel Engine Discussion => Topic started by: jhiggin on October 02, 2015, 01:59:52 pm
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well i've been going through my 82 660 red block j code. I should start by saying the motor is out of the truck and being freshened up (not fully rebuilt) to put in my restored 81 k20. This motor was supposed to just be for back up/ parts until i went to change the oil in another 6.2 i'd planned to use and was greeted by sparkly oil. so now back to the red block, it turned over great when i got it but wouldn't run. injection pump was shot. anyway this is my first time working on 6.2 internals. non of the mains are cracked shockingly. I plan on plasti gauging main/ rod bearings, but id prefer if possibly to not do anything to the bottom end but a girdle and oil pump if possible. i also plan on replacing timing chain, water pump, harmonic balancer, and all seals including head gaskets. my real question is when it comes to the heads. i have them pulled and they look to be uncracked and in good shape but what should i replace/ have done. i was thinking pressure test or magnaflux and hot tank but what do yall think? any opinions on what should be freshened up parts wise? this truck will be a daily driver
thanks!
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Sounds like you have things covered pretty well.
Those red blocks are sought after in the 6.2 world.
Sending the heads out to be checked is a worthwhile investment.
What are you going to run for a harmonic balancer? Fluid dampers are nice, but big $$. It might be worth it if the truck is a keeper.
The only other thing I can think of is to install a newc AC Delco lift pump before you install the engine back in the truck.
Hopefully Vile will chime in, he rebuilt a 6.2 a few years ago.
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I'm just gonna run a gm balancer and I already have a electric lift pump set up. Update on the red block j code heads. They look alitle rough In between the valves.
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Sounds like you have a good plan to me.
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I'm just gonna run a gm balancer and I already have a electric lift pump set up. Update on the red block j code heads. They look Little rough In between the valves.
you can check timing and spray pattern on injectors and pump, actually probably just get new injectors, wouldnt want to put back together and have a "pissing" injector