Everything posted by w3wilkes
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Carburetor Conundrum (260Z)
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Carburetor Conundrum (260Z)
I would guess fuel pressure should be okay. If I'm right this is dead headed. We'll know better with a pic of the passenger side where the fuel supply and return fuel lines are. If it's dead headed the return line should be capped
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15" Tire Recommendations for 2022
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Carburetor Conundrum (260Z)
Looking further at your pics the jury rigged throttle return spring looks weak. Those carbs should have a spring on each carb going down to the heat shield between the intake and exhaust manifold.
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Carburetor Conundrum (260Z)
Curious how the fuel lines go to a "T" and then over the top of the valve cover to... what? How about a pic of the other end of the single fuel line that goes over the top of the valve cover. I'm guessing it just goes to the hard line on the right inner fender? I'm also guessing you have an electric fuel pump at the tank? Or is there a mechanical pump on the passenger side of the engine?
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15" Tire Recommendations for 2022
I'm currently running Bridgestone Ecopia's, 205/60/15 and they're okay. My next tires I'll be going back to BFG Radial T/A's in that size. I found them easier to turn the steering wheel at low speed, run more quiet and definitely easier to balance than the Michelins I had before them. Never did get the Michelins to balance very well. The T/A's may not be "performance", but they handled my "spirited" driving just fine. I did have them mounted black walls out, the raised white letters look great on a '70 Chevelle SS, but that's not for me on the Datsun.
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Fuel/gas cap chain variations
My Series 1 12/70 car has the chain on the right, 6 pieces plus the split ring.
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Most dreaded of jobs finally on the horizon ? the fuel tank !
I don't think you'd want to leave the tank to vent in any enclosed space, like a garage! When I did my tank I drained it (discarded the fuel at the local hazardous waste facility). Put the drain plug in and pulled the tank and sealed over all the vents, gas in and out tubes and filler port. This was 5 years ago, but my friend walked me through how to clean the tank and prep it for sealing out in the driveway. Once all that was done the tank cured for maybe 2 weeks and then put it back in. Probably another couple of weeks before I was ready to put any gas in. It's been fine ever since and has had nothing but ethanol free fuel.
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Suspension / Steering rebuid (parts needed)
MSA also has those 15753 front control arm bushings for less than Auto Zone Motorsport! Factory Front Control Arm Bushing, 70-78 240Z-260Z-280Z - The Z Store! Nissan-Datsun 240Z 260Z 280Z 280ZX 300ZX ( Z31 Z32 ) 350Z 370Z Parts
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The Dreaded Vapor Lock
Questions... 1-How did you mount the hoses for bypassing the metal fuel rail? 2- Rather than dead head... Why not a short piece of piping in the hose on the return side (after the carbs) that had the correct restrictor orifice size that Datsun crimped in the end of the return line of the metal fuel rail to even out the fuel pressure?
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Rear diff oil Wt. 280z
Redline 75W90 Gear Oil GL-5 Red Line Synthetic Oil. 75W90 GL-5 Gear Oil (redlineoil.com)
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Engine Oil 10W-40 vs 20W-50 in L28
Here in Utah where we regularly see 90+ in the summer I've been running Driven (Joe Gibbs) HR1 15 / 50 and have had no issues with great oil pressure.
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Z's on BAT and other places collection
Very nice car! not that it would make any difference, but I think the wheels are Rota RB's, not RKR's.
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Not quite overheating
Sounds like everything you're doing should be raising the boiling point of your coolant which I believe is a good thing. Once coolant starts boiling in the block the air bubbles touching metal cannot pull heat from the metal anymore which can lead to bad things happening. Didn't you say you were running a 190*F TStat? You could try changing that out for a 160*F TStat and see if that helps bring your temps down. From what I've read here you would want the TStat with the centered valve rather than the one with the smaller offset valve.
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Not quite overheating
With Dallas being fairly close to sea level the boiling point of water is right about 212*F. Based on that you've got about 15*F to play with if you ran straight water. Then mix that with antifreeze which has a boiling point of around 387*F a 50/50 mixture would have a boiling point around 223*F so you would have almost 30*F to play with before you boil. You will have a little more room due to the cooling system being pressurized which will raise the boiling point temp even more. One other little thing is that water typically is the best at heat transfer where the 50/50 water / antifreeze may not be quite as good at transferring heat from the engine. This is kind of just off the top of my head. I'd bet @Captain Obvious or @siteunseen would be able to provide more and probably better enlightenment! My thought is you should be okay at 195*F and I'm sure as soon as you start moving it will come down.
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How to : interior lights ?
Don't know if they're the same bulbs as a 240Z. I used this LED in both the dome and map lights in my car. DE3022 CAN Bus LED Bulb - 18 SMD LED Festoon - 31mm - 90 Lumens | Super Bright LEDs Here's a list of some of the other LED's I used and where they go on the car.
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AMCO Front Bumper Bar for '71 240Z
I had the same rack on my 73 Z but I put it on the drivers side.
- Trans Swap Wiring Questions
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AMCO Front Bumper Bar for '71 240Z
Langes were notorious for what we called "Lange Bang". My experience with them was a long ways from soft inside! Nordica's were much more comfortable. I'd agree with the Head Vectors and Scott poles. Worked at Watson Shelter at Alta for a season back in about 1970-71, greatest snow on earth.
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280z Steering Wheel Vibration
Once upon a time on my old 73 240z I put Michelins on my car after I wore out the factory Toyo's and with them came a steering vibration at about 60+MPH. I tried rotating and rebalancing and nothing would correct the vibration. After putting up with it for a couple of years I replaced the Michelins with BF Goodrich Radial T/A's and low and behold the vibration was gone!
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Getting a few extra inches of leg room
I'm with Steve, those seatbelts aren't stock, on a stock 73 car the shoulder belt would be a separate piece that clips into the lap belt if you want to use it. And I also went with the Roadster seatbelts with the retractor connected at the roof location.
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Replacement radiator brand/location
Can't answer that since I went electric fans and as you can see from the picture the tabs on that electric fan shroud were a perfect fit on the engine side of the radiator.
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Replacement radiator brand/location
I did the 3 row aluminum from MSA. No tab bending, just bolted right in with no adjustment on my 71 240Z. Motorsport! Aluminum Radiator, 3-Row, 70-8/74 240Z-260Z - The Z Store! Nissan-Datsun 240Z 260Z 280Z 280ZX 300ZX ( Z31 Z32 ) 350Z 370Z Parts I've had no trouble with it since I put it in.
- 240ZBUILTBYME 1971 240z HS-001063 Project Georgia
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24 inch diameter front tires