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Everything posted by datzenmike

  1. There is a coolant passage in the back of the KA block that would connect into an oil drain back hole in the L head. I guess an L head will work with a single chain timing chain. You'll need a fuel pump eccentric. A car KA has a large crank girdle but a truck doesn't so fitting it into a Datsun would be easier. KA compression with L head would be around 8.64. I would find a Z24 engine and do it instead. Everything fits. Already as dual timing chain though it needs 4 links added. Compression is 9.44. Your L series oil pan and engine mounts will fit the Z24 but not the KA... KA main bearings are much smaller than L or Z series. Z24 rods (right) are beefier than the KA...
  2. Headlights have their own fusible link. If blown everything else with still work.
  3. datzenmike

    Bent valve?

    Blue wire is for automatic electric choke. Red wire is for idle cut solenoid. Not having the idle cut wired won't cause a fast idle it will prevent an idle. Idle cut must have power to it in order to idle at low speeds. That picture shows the choke closed. Is it closed when warmed up?????
  4. It's ....... possible. Also possible the brushes are frozen, plastic plug in the back is loose, output cable loose, battery cables loose or corroded. Does the starter click or engage at all??? Do the headlight work slightly?
  5. datzenmike

    Bent valve?

    The choke plates should be vertical and fully open when warmed up. If choke is on, the fast idle will be engaged. Electric secondaries ???? No such thing. The 32/36 is progressive. When the primary gets about 50-60% open the secondary begins opening. It's mechanical... if you floor it both will open.
  6. I found a part number from '84 720 on and for '86-'89 D21 that were the same so I would say they are all the same shape just some may have O2 sensor hole or extra air injection tube hole. Best is a used one that isn't broken. The left one is just run of the mill Z24 exhaust. The other is from a later 720 and has the O2 sensor (green wire) and the snake tube isn't on the left one but you can see it has a boss that could be drilled and tapped for it.
  7. Better pull the manifold to work on it. Take the nut you got off to the hardware store or machine shop and they can measure it for threads.
  8. Spraying seems to help so replace the distributor cap and the rotor. If you haven't changed the wires, might be a good time to get rid of the old ones now too. Try to find a cap that has copper terminals inside. Find NGK plug wires. Spend the money now. It's cheaper than being stranded. To help with the start check and set the valve lash and the timing. This should get you through the winter without any problems.
  9. I forgot to check the D21 Hardbody last night. It uses the same Z24 as some of the late 720s but it is in a different body and the outlet down pipe may be angled differently but I don't know. I'll try again tonight.
  10. Good!! Keep in mind that it may have blown for a reason like a short to ground so test that this is not the case or this one will blow also. A fusible link is unique in that the hypalon plastic coating will melt but not catch fire like all other insulations. The last thing you need is a fire. The advantage of a fusible link it it does not blow right away but take 4-5 seconds. This allows it to survive a temporary or accidental short to ground. It is, after all, basically a fuse so always replace with the same rating and always with a 'fusible link' and not just a black wire that may not protect.
  11. Congrats on your wife's new truck 🙄 😄
  12. It should easily go faster than that. Replace the fuel filters. Costs $5 and no harm done. If you have the 8 plug head confirm that both sides are firing. Let me know, it's an easy fix.
  13. All manifolds are the same after '82. There are some differences noted before, but should bolft together the same. Seriously why make a different manifold for different years or trucks using the same engine.?
  14. I think they will, anything above the 69' 510??? has the larger bolt pattern? Kind of going by memory. I'm sure they have been used and the S12 struts
  15. datzenmike

    Bent valve?

    Never hesitate to post pictures. Often it's something over looked or not obvious to the sender. A second set of eyes sees things....
  16. I think you can if non turbo. Turbo ones are 5 lug rims.
  17. This is just a guess but the 71C transmissions seem to have the shifter just slightly more forward then the older 71Bs. The D21 Hardbody is already shorter than the 620 transmission and will move the shifter even farther forward than where it is now. You have bucket seats so using a 240sx transmission, it won't hurt if is should move the shifter slightly back from present position. In addition I think shortening a drive shaft is probably easier/cheaper than lengthening it. I haven't measured these directly but thought they were closer to 34" and 30"??? I stand the transmission up on a couple of 2x4s, put a straight edge across the case where the drive shaft enters and measure vertically down from the straight edge to the front case where it meets the engine. This avoids a longer slope distance
  18. datzenmike

    Bent valve?

    Loosen the 3 screws on the outer ring and adjust so all 4 and evenly spaced.
  19. Check near the positive battery cable for the fusible links. They are about 3 inches long and have plastic connectors on each end so they can be removed and replaced. There are 3, Two Green and a Black. One of the Greens powers only the lights. The other Green powers things that are on all the time like the brake lights, interior light, horn, and clock. This leaves the Black fusible link which goes to the ignition switch which selects where the power goes. No gauges and no start signal tells me that you may not even have power to the ignition switch and the likely cause is the fusible link. It may look melted, burned or just crispy. The outside insulation may be good but the wire inside melted.
  20. datzenmike

    Bent valve?

    Maybe he means the rotor to cap contacts.
  21. When warmed up take the top off the air filter and check that the choke plate is vertical or fully open. While idling check that the fuel level is showing in the round glass window on the front of the carb.
  22. That seems terribly short for an insert. Try on line for a place that makes and/or sells strut inserts, (Tokiko?) or on line catalog of sizes and dimensions. You can use shorter one than needed and build it up underneath with washers.
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