1981 coupe project almost driving
As far as the hose and filter, that replaces the glass filter that was there when I got the car. The hose is new high pressure (I forget how much) injection hose that will handle the 50 psi going to the fuel pressure regulator. I wasn't able to reuse the stock metal line when I removed the mechanical fuel pump (which didn't work with the Vortec engine). Is there a danger from the hose? I suppose I could replace the filter with a metal one, and the hose with braided line.
Two temp sensors, or a fan controller, would let the fans come on in sequence. This reduces load on the electrical system. Modern cars do this, at least ones with two fans. It also reduces the single point of failure that my system currently has: If the switch fails, or the connector brakes, I will have zero fans. But I'll hear the silence, even over my headers, and I'll notice the gauge climbing. At least, I hope so.
That plastic fuel filter is a fire hazard. There are much worse things on other cars on this Forum, and you wouldn't believe what came with my car when I bought her, but it is worth mentioning even in this case. There are now nearly a dozen rubber to plastic or rubber to metal joints in your engine compartment. If any one of them fails, you will spray pressurized fuel on a hot engine. If you emailed @lars for his timing papers, email him again and ask for his metal fuel line instructions.
Also, yesterday I had to move the car off the lift, so I fired it up thinking I would take it out of the garage and around the block. As I started it, I wondered, "how will it fail me this time?". I drove forward about five feet, and the car died and wouldn't restart. Eventually I figured out the fuel pump wasn't running and the float bowls were empty. Later that day I got out the Power Probe and injected 12v+ to the pump and found it still worked. Then I found no 12v battery power to the controller, and finally found a blown fuse for whatever unused computer circuit I used for the pump. That is a really inaccessible fuse panel. I think I popped the fuse when I cut out the computer wiring under the hood without disconnecting the battery. I must have shorted power to ground with the cutters. Hopefully today I'll get a chance to drive it.
Here's the exact one I got on Amazon for $219:
Here's what appears to be the same one one eBay without the relay and sensor for $195
https://www.ebay.com/itm/11556308244...BlBMUMLU8MOsYQ
Here's the exact one I got on Amazon for $219:
https://www.amazon.com/dp/B097CXX1L3
Here's what appears to be the same one one eBay without the relay and sensor for $195
https://www.ebay.com/itm/11556308244...BlBMUMLU8MOsYQ
I need a new rad and worried about proper fit.
Here's the exact one I got on Amazon for $219:
https://www.amazon.com/dp/B097CXX1L3
Here's what appears to be the same one one eBay without the relay and sensor for $195
https://www.ebay.com/itm/11556308244...BlBMUMLU8MOsYQ
I saw where you ordered bigger rubber but ended up using
orig rubber.
would you say the rad is in firmly or do I have to bend the top mounts.
sorry for the questions, too many years of parts made wrong.
The Best of Corvette for Corvette Enthusiasts
I saw where you ordered bigger rubber but ended up using
orig rubber.
would you say the rad is in firmly or do I have to bend the top mounts.
sorry for the questions, too many years of parts made wrong.

But if this works, that's great! That whole setup is half the price of just the fans that many of us run.
The car runs with the new distributor, but not for long. The problems are two-fold. First, I put a fuel gauge after the fuel pressure regulator, and it is at 9 psi, even adjusted all the way out. Running the screw in gives 9.5, which is as high as the gauge goes. My carburetor friend explained to me that the regulator can't handle the 50 psi from the in-tank pump I installed. Oh. I guess that's what you get with a $40 regulator. So I can either spend $350ish for a quality regulator (at least I think I can, based on the online specs). Or I can put the carbureted pickup back in the tank, and use an external low-pressure electric pump. That means I'll have to cut into the factory steel fuel line, and run a rubber line from the top of the tank to the pump on the frame rail, and then to the steel line. I was trying to leave this set up ready for fuel injection or an LS swap for a future owner.
I still think I could put a cheap non-return style pressure regulator after the existing return style regulator to try and bring the 9 psi down to 4 psi, but my buddy says that won't work.
Also, the fuel pump is randomly shutting down. This one is probably my fault. I found a random 12+ battery hot wire in the cargo compartment, and used it as power input to the fuel controller. I don't know what's going on with that wire, but since the controller is so close to the battery I'll run a fused wire directly from the battery to the controller. Or I wonder if the fuel pump is shutting down because it's trying to force 50 psi through a 9 psi regulator with a small factory return line (5/16?)?
Anyway, it's really really close to driving. I just hate that I need to pull out my in-tank pump and replace it with an external one. Also I need to call my insurance lady to remind her I need collector insurance on this car, so I can get the car titled and registered so it will be ready for the road when it's driveable.
I'll fix the wiring while I'm replacing the pump. And then the car will be driving!
I'll fix the wiring while I'm replacing the pump. And then the car will be driving!
I also put in the Chinese distributor. It seems to work fine. I still need to add in a vacuum tee and line for the advance. I got the timing at idle set to about 20 degrees.
I was able to drive the car out of the garage into the yard without it stalling. I think today might be the day I drive to the gas station. I've been trying to get Grundy classic insurance on the car so I can title and register it, but it's been about six weeks, so now I just want to put regular car insurance on it so I can register it and drive it.
Of course, no post about this car would be complete without it letting me down again, so here's a picture of the hood release cable in my hand. Fortunately the side vent grilles are missing from the car, so it's easy to reach up and pull the hood release. New cable arrives today!
You will most likely need to retard the timing back down when you hook up the vacuum advance (to manifold vacuum), otherwise you'll have too much advance at light cruise speeds. Knock, knock...
- replace passenger side window motor
- hook up vacuum advance
- replace hood release cable (how do you thread the new cable into the existing sleeve/housing?)
- a little bit of wiring cleanup under the hood
I have an appointment with the DMV on Monday morning to get it titled and registered, so if all goes well I could be driving it next week. But I doubt it.
After a call to the DMV I talked with a person who might be able to come look at it here, if his supervisor approves. Otherwise I'll have to get it towed there and back, or drive it there with no tag, if I get it running that well. Whatever.
On the plus side, I found a big vacuum leak, so the engine is running much better. I also temporarily hooked up the vacuum to the distributor, and I can hear the difference. I just have to find a place to put the tee. And I got the new hood release cable in.
On the minus side, the headlights are now stuck up. I really didn't make any changes in the vacuum system. After some googling I read about the switch under the dash, but that didn't help. I haven't had time to diagnose it, because I've been replacing the passenger window motor. Of course, I didn't read up on it before remove the motor, and now the regulator spring has come unwound because I didn't pin it. I spent quite a while messing with it without success, so I'll watch some videos today and see if I can figure it out. I suspect I'll have to remove the glass.
Then replace the leaky brake booster, and the vacuum system should be tight, and car should theoretically be driveable. But not legally driveable. Ha ha.
Here are some quick Bubba fixes to get you by:
- Don't put a T in the vacuum line to the distributor vac advance. That should be a straight shot to a MANIFOLD vacuum port.
- Until you get it sorted, you can cap off most other vacuum ports (keep the brakes, PCV, EVAP, and vac advance!).
- You can operate the headlights manually until you fix them, or upgrade to electric. Reach up behind under the front bumper.

















