Seems there is a bit of a bad vibe on the forum for 1PZs and R151's. I did my research before buying this truck and have done a lot since. I am sure we can all agree there are better engines and trans in the 70's but considering this is a SWB and fairly light truck I don't see any issues with the powertrain. The truck has 31's currently and I was pretty impressed with how well it pulls being a 5cyl N/A diesel. Obviously the 4.56's have a lot to do with that. The R151 probably isn't the best trans in a heavy truck like a PZJ77 or if you are revving and dumping the clutch or rocking the truck hard in a mud hole. I had an 87 P/U with the R151 and enjoyed it in that truck a lot. The only issues I can find on the forum with the 1PZ is it's flywheel and there are options for that if it goes.
This truck has about 210,000 miles. Considering the area I bought it in here in Latin America didn't have paved roads 27yrs ago and just the pure age of the truck it is in real good shape. The truck is a 12v truck which I think is nice, I have had a 24v truck before and much prefer 12v.
The trans shifter was sloppy so I have already rebuilt that using new OEM parts. Nice and tight now. I ordered everything to do the timing belt and water pump which will be here on Tuesday. The other night I pulled the timing cover and to m surprise the belt is new and OEM Toyota. The truck has a clutch booster and I can't recall the last truck I have driven with a clutch booster. The auto glow system is working flawless and the truck starts easily.
So any ways, here is my list so far of immediate work to be done.
-replace the radiator, upper and lower hoses and the thermostat. I may even do the water outlets depending on condition. The rad has a couple repairs on the caps and also a slight leak on the top outlet. A new cap will go on as well and I plan to replace the isolation mounting bushings. I don't think the truck has a thermostat in it or it is stuck open, it doesn't come up to temp enough.
-As mentioned, new water pump and timing belt components will be here in two days.
-New clutch. I can't say what condition it is in, it is not giving me signs of being toast but for the sake of doing it, a new clutch is going in. It is soft but I believe that is due to the booster. When the truck is not running it is nice and stiff.
-There is some JB Weld on the outlet pipe on the p/s reservoir. It doesn't leak and seems to be fine but for the sake of bringing this truck up to my standards I am replacing the reservoir.
-The front passenger seat has two bunged up mounts, both previously repaired but not the best repairs jobs. I will be cutting and welding as required to fix these for good.
-The oil pressure gauge is not working. Not sure if it is the actual gauge yet or the sending unit. I will be replacing what ever is required to make it work as it should.
-Rear door on the RHS needs some adjustment. I have already got it closing and latching better than when I bought the truck but I will be giving it a full work over. The rear doors welting is missing so it will get a new one.
-I have already replaced the wiper blades but will also be replacing the linkage and the arms using OEM parts.
-Washer bottle motor is not working, if needed I will replace the motor. The cap is cracked on the reservoir so that will also get replaced.
-Leaf spring bushings are fairly well worked over. New ones are going in.
-Most of the tie roads and drag link plus pitman arm seem ok but will replace any and all parts as needed.
-Front wheel bearings are a touch loose. Not bad but enough to warrant digging into the knuckles and at the very least a repack and proper adjustment. They are not making any noise, if any parts in the knuckles show wear I will replace them.
-Inlet pipe on the A/C shows a tig weld repair. No issues but for aesthetics I will likely replace this hose. A/C blows nice and cold very quickly after starting the truck.
-Throttle cable is fine but I am replacing it anyways, I am just anal like that.
-Oil pan plug is a mess. JB welded up. I will be replacing the oil pan.
-A compression test will be performed. I checked the engine for blowby before purchase and it passed with flying colors so I am fairly confident compression is good also. Valves will be adjsuted if I feel it needs it.
-Yes the wheels are not stock and fairly ugly. I have posted pics on FB of the truck and man did people go on about the wheels. Honestly I don't see what the big deal is, that are not that awful to me and wheels + tires is probably the easiest in any of this to remedy. Yes I will be replacing both even though the tires are new. I will be going with some BFG KO2's in a 32-33", leaning towards 295's on a 16" wheel.
-The carpet is shot, I am looking into a vinyl floor for the truck.
-Seats have been recovered and look pretty good to me. However the drivers seat has some issues I will be dealing with.
-The console is shot, will be going with a Tuffy I modify to suit the truck or just fab up a new one from scratch.
-E-Brake needs adjustment. Brakes work great though. I may or may not dig into them, I am pretty anal about brakes so will just have to take a look see at the pads, rear wheel cylinders and so forth.
-I am probably going to put sound deadener in the whole floor and inside doors and panels.
-The is most if not all of the repairs. The rest is just aesthetics, but I will be dealing with those as well. Such as new rear side window weatherstripping/runs. The grill I am told and front running/turn signal lights are from a 2007. I don't mind them myself. The tint on the windshield is lame and will be removed, probably leave the rest of the tint. The electricals and wiring in the truck is in great shape and doesn't need much attention. Headlights are original and work just fine.
Cheers
