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The 2H does not have oil jets, Toyota decided it did not need them though many say Toyota itself did not design the 2H. Repco and others here will machine and will fit the oil nozzles but they all say they are not really necessary. Method..The block is turned upside down and the surface where the oil gallery is located is machined flat then bored then tapped and the nozzle screwed in same as the 12HT. The money is better spent on a new 4 core radiator and genuine waterpump or having the rocker arms rebuilt with a Flash crome or Sprayweld rebuild. There are hundreds of 2H's around town here with turbo's, easy when you see them when you take off or crawl off at the traffic lights, very easy to pick. Around Oz there are enough to keep 3 or 4 companies manufacturing kits for them so what does that say? I bought my Safari/T3 kit for $600.00 secondhand some years back and it was put on with a 3 inch exhaust and forgotten about at the time my motor had over 300,000 Ks on it,still no problems what so ever. I can't see any risk that you speak of if the motor is in good condition and the cooling system like wise. Radiators can look good outside but the tubes inside can be blocked and still function with a 30 to 40% restriction and this with the extra performance on a hot day will cause problems-with any 2H or 1HZ. A lot of blokes here will fit the turbo, big exhaust gauges etc and then make excuses why they will not pay $240.00 for a new radiator after theirs has been in the car for 10 years or more.
On performance, Pre turbo, the 2H is like a wounded snail in traffic and bloody dangerous while overtaking at highway speeds between 90 to 110KPH. Some climbs over ranges here require 2nd or even first gear if you can't get a run up. Post Turbo then usually 3rd is required only. Remember these are only speed bumps compared to the mountains in the Americas. Top speed should be increased to just over 140 KPH , diff 4.1, tires 33x12.5x15 mudders on my HJ75. If tuned reasonably well you should have a bit better economy with the turbo if you drive it accordingly but if you boot it you will have less.
Fit the turbo, 3inch exhaust [preferably mandrel bent] new water pump and radiator and pyrometer. Then like me you will wonder why you did not do it sooner. Regards
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