Bringing 1972 240Z Back to Life
Hi All! Newbie here. My friend and I are working on his newly acquired original 1972 240Z. Original L24 engine, round top carbs, and original...well, most everything. This is basically a driveway job, not a real restoration or anything, so we're doing what we can. Pictures will go up later, but they aren't that great. Let me preface all this by saying that neither of us are too familiar with Z's, but we're doing our best. I work on older Toyota's mainly. And yes, we already have the FSM! We don't know what's original and what's not, so please bear with us. In fact, we're looking (long-term) at doing an all original restoration. But first, let's get this thing driving!
Here's a little background: His grandfather bought the car new in 1972 and has had it since. Around 2001 he stopped driving it and just left it out in the driveway, in the sun all day, all the fluids in it, etc. Needless to say, it's in rough shape. The good news is, it (sorta) runs! Fresh gas, oil, oil filter and a battery and it came to life! (Rather sickly might I add) It should be noted though, that there is A LOT of stuff (mainly hoses and tubing) missing, especially from the air system, so we don't really know what's what.
So, our issues at this point:
1.)It was leaking coolant, but we're in the process of replacing all the lines, the thermostat housing, and flushing the system completely. Aside from lines, all seems to be working mildly okay. There is, though, what looks like a metal pipe between the intake manifolds (?) that's just basically dripping. Any idea what that is or if there's a fix?
2.)There was no belt on the air pump so we put one on and tightened it well, but it made the engine hard to start and after only 10 seconds of cranking, the air pump was ridiculously hot. I'm assuming that means the pump is bad? If not, advice? Is it necessary?
3.)What else do we need to get this Z running smoothly? We're trying to focus on the engine only at this point, with driveability coming later. It needs a lot of choke and cranking to start, and needs choke for a minute or two to idle, but past that the idle is actually okay. Stumbles a bit when I press the gas, and at this point we're afraid to rev it too hard. We've had it up to about 3,000 RPM, but that's when the coolant initially started leaking. After the coolant is done, what else should we look at? Fuel delivery seems to be okay. No leaks, which is good. Hard lines are holding up. Maybe adjusting carbs?
I really appreciate all the help you all might be able to give, and we'll owe you a huge debt once we bring one of the survivors back to life, hopefully in original condition. Remember, pics will come soon! But Thanks in advance everyone, this is going to be one heck of a project!
Bringing back a survivor in Los Angeles!