15 Nov 2005 - Carbs and Hatch
The news started early this past week. On Tuesday a box full of parts from Danny's Datsuns arrived. I had ordered a few parts for the upcoming carb installation from him - an air cleaner, heat shield, return springs and choke cable assembly. At first glance, it all looked good.
But after closer inspection, the only parts that were acceptable were the return springs. The choke cable assembly was wrong, it was for a '72, not the earlier '70-71 that I needed. The heat shield had one mounting tab broken off, and a second one (there are four) was cracked. And the air cleaner looked OK from the outside, but inside the air horns and crankcase vent tube had all been cut off with a hacksaw.
I called Danny to explain, and he was great to work with. He was certain that he could find an acceptable air cleaner and heat shield for me. Not as certain about the early choke cables, but he'd give it a shot. And since his shop is only 60 miles from me, I asked if I could drive down rather than ship the stuff to him. He agreed to that quickly, saying that by doing so, I can look over the parts and approve them there on-site. "Plus," he said, "you never know what else you might see while you're here that you just have to have."
So we made an appointment for late Friday afternoon. Deanna and I drove down and easily found the shop. Dead Z's everywhere you looked. Kind of exciting (lots of parts) but sad (dead Z's) at the same time. Met Danny and he began to look for suitable replacements. As promised, the air cleaner was easy - he had a shelf full of them. He found a proper choke cable assembly in fairly short order, although the cables themselves were in bad shape. But he gave it to me and told me that between it and the one he sent originally, I should be able to make an early one that was good. The heat shield was tougher, none of the singles on the shelf were intact. So he proceeded to strip one off a recently acquired L24 on the floor of the shop.
While he worked getting the heat shield off, Deanna and I wandered around just looking at all the stuff. And just as he predicted, we found something we "had to have." We found dozens of rear hatches leaning against a wall. Looking through them, we quickly found that three were the early hatches with vents that our car should have. The hatch was one of those parts we knew we'd have to find, but would be reluctant to buy sight unseen. So we picked one out and loaded it in the back seat for our trip home.
Saturday morning found me moving the Z into the garage for the carb install. I was pretty sure that I had most everything I needed. Shouldn't be more than a "one or two trip" project (meaning trips in the middle of the job to get unforeseen parts).
BEFORE
Started by pulling the FI fuel pump and restoring the fuel lines near the tank to factory configuration. I had decided that while mounting the new pump up front isn't ideal, would be far cleaner, easier to work with, and much easier to wire. Then I capped off the coolant fittings to the injection manifold, as I won't be using that on the carbs. Stripped out all the wiring and the brain, then finally pulled the whole mess out of the car.
THE MESS
Started installing new stuff after lunch. Installation went fairly smoothly, only a couple of small bugs. After getting it all physically in place, the last three tasks were: mounting and plumbing the fuel pump; wiring the pump; and rewiring the ignition. Those tasks went well also. It turned out to be a "two trip" job, I finished late Saturday afternoon.
AFTER
It started rather easily, and runs surprisingly well, considering that the carbs are unchanged from however they were when I unpacked them from the shipping box. It is running rich, but it runs. A short drive showed that yes, it can run smoothly and not miss, so the results are encouraging. There is still much tuning to be done, but the main pieces are in place.
Good news and bad news - the tach now works, but it is not accurate, reading quite low. Also, the engine continues to run after turning off the key, so there is still a wiring issue to be dealt with. These two problems are probably related, as the tach is much closer to correct when the engine is running with the ignition turned off. I will also need to shorten the choke cables at some point as well.
Lastly, today I swapped the new-old hatch onto the car. It actually fits much better than the one that it had before. I suspect the other one had bent hinge mounts. Plus the color (cream now, originally orange) is much closer to yellow than the blue was. I think the glass will need to be replaced, but this hatch is actually in much better shape than the last one, and is "correct" as well.