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I believe the intuition is correct. The highest of the forces should be compression straight down the rod. And after all, one mm off the diameter is only a half mm off the radius (about 20 thousandths for us US folks). I'm no engine builder or materials science guy, but my seat of the pants engineering says I wouldn't be concerned about taking off .020 of material. Anyway, I know it's academic because you're not ready to try to tackle a job like this, but if you were, you juuuuuust might be able to get that on your lathe. The FSM says the rods are 5.13 inches "center distance", and I assume they're taking center to center between the two bearing surfaces. With the big end lower cap off, you just might be able to swing it. (Get it... Swing it?) Haha! I kill me.

The bouncing problem can be caused by several issues. One common issue is the outer cable. Its just as old as the inner cable and wears too although a lot less then the inner cable. If you fitted the new cable without extra lubrication it could be too dry. You don't want it packed full of grease, but to dry can make it stick and jump.I cleaned my outer cable by pulling lint free "nylon" string/rope through it. The string was soaked in brake cleaner. I repeated that until all the old dryed up grease was gone. After that I used a similar string covered in white lithium grease to relube the outer cable. Then lightly greased the inner cable and fitted it all back together. Another probable cause is wear in the speedo itself. Fast women mentioned it in her post. If thats the case, you might need a replacement. Don't try to lubricate it by spraying anything in the drive end. You could make the situation a lot worse. It works with a small air gap between discs and any kind of fluid in there will send it to maximum speed. Pay special attention when mounting it to the speedo and the pinion adapter at the gearbox end. Make sure its lined up correctly. Poor alignment can cause your problem. Try to avoid sharp bends. Back to the pinion. The pinion in mounted in the transmission, but it is not related to which transmission you are using. It depends on your diff. The transmission came out of a 280Z which uses a diff ratio of 3.54:1. If you haven't changed the diff it should still be a 3.364:1. The yellow pinion gear would be the correct pinion for that situation. It won't cure you bouncing speedo, but it will give you a more realistic speed. Chas

thanks! They weren't too bad. Should have taken more pictures but with the just su's DVD I got them back together. Put the new exhaust on too.

I hope so, but there are people out there that still think "old" has nothing to do with value, unless it has Ferrari written on it.