Dgriggs

I would like to get my reverse lights working on my '72 240Z. The wiring harness on the car has two connections, but the transmission, a wide ratio 5 speed, has three switches. The connections on the switches are all mangled, (by PO)so I need to find out which ones I need to replace, to get my reverse lights working. I have searched this and all other applicable forums on this site and can find no information regarding the purpose of these three switches. I read about some truck transmissions having a 5th gear switch presumably for cruse control. Are the two connections on the harness for a neutral safety switch, and a reverse light switch? What are the three switches (front, middle, and rear)on the transmission for? I hope the attached picture will be helpful. Thanks, Dan

I have not seen your pics yet, But I think I had a very similar situation with a well worn L24 years ago. The crank snout bolt had backed off and the balancer was twisting back and forth so violently on the worn out key and keyway there was a terminal sounding knock coming from down there. At the time I was saving my pennies for the stroker I am currently running. Not wanting any further turd polishing, I fixed it on the cheap. Cheap Solution: The pulley was removed, key replaced with a slightly larger (I bought a slightly wider one that need to be filed to fit) version from an industrial bearing supplier, pulley reinstalled with new key, and crank bolt retorqued using "red death" locktite. This 75 cent fix lasted for 15,000 miles, until I swapped in the L31. Who knows how much longer it would have lasted. I used to rev that L24 like there was no tomorrow! You can replace your crank, bearings etc. on general principle if it helps you sleep at night. However, as it was in my case, you may just need a 75 cent band aid. I know which one I would do again if I had to. I think I will check the torque on my engine when I get home. DG

About 6 years ago I switched the fluid in my early 5 speed to Redline MTL 90. The friction modifiers in that formulation allow the tired old synchros to do a better job of, well, synchronizing. I had much better shifting much sooner (shorter "warm up" time)than with the old 90 weight. If you are not sure what you need for your application, Redline, Amsoil, and Royal Purple have tech staff to point you in the right direction. DG