DD...do you know if the block has two oil passages for the front cam bearing? If so, a photo of that would be great to pass along to my machinist. Will the camshaft have sufficient oil with several oil passages being partially blocked? I was thinking to possibly use a dremel to grind out the cam bearing and then clean the block.

Ok, got my block back with new cam bearings. Camshaft slid in there no problem and spun freely. My only concern is that he didn't line up 3 of the oil passageways 100%. And the outer bearing shows 2 oil passages but only one is lined up with a passageway hole. He said the block only had 1 oil passageway. Someone please tell me that is correct. And should I be concerned with several bearings not being lined up with the oil passageways?

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I agree that the previous owner caused the damage. I disassembled the engine some time ago and carefully removed everything. I don't recall putting any kind of force on the camshaft when I pulled it out. The engine must of been rebuilt at some point which is when this happened? I received my Clevite bearings this weekend and taking them along with the block and cam to the machine shop. Will post when it's done.

I have another question related to crankshaft end play. It measured .003 in. while I was keeping leverage on the crankshaft which is a little tight. Haynes manual calls out .002 thru .006. Should I have my machine shop shave some of the thrust bearing or crankshaft, or just leave it as is?

So your indicating that the front lobes not ground properly put stress on the camshaft towards the rear which is where the damaged cam bearing is? Why wouldn't the cam journal be damaged as well? If the cam has been reworked, I hope the journals were not turned. I ordered a standard size set of bearings and should be here early next week. Will have my machine shop make sure I have the right size. Any idea what the bearing/journal tolerance should be?

Yea this is a set back for me. Machine shop that I use here locally is highly recommended but super slow. I told him not to do anything with the cam bearings so he never did take a look. It must of been debris. Interesting though that the cam journal has no damage. It is the second bearing from the rear of the engine. One bit of good news though is that my crankshaft end play is within tolerance, .003. Well I'll be ordering bearings and dropping off the block and camshaft next week sometime. Thanks for the information.

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Ok thanks. Isky did a regrind for a mild performance cam. Journals should be the same diameter so I can stay with standard size bearings?

DD....as much as I wanted to Not replace cam bearings for my rebuild, after a close inspection I don't have a choice. One of the cam bearings has significant damage. However the camshaft journal does not show this kind of damage. Doubt the machine shop would of done this. They only honed the cylinders, decked the block and used a mild cleaning solution. Any idea how this could of happened? Also was not able to find the cam bearing part number in Tech Wiki.

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This is a 1975 model so it has the "high RPM" engine. Would this indicate it has the H72 cylinder head for North America vehicles?

Thanks DD. What would the carburetor be on this coupe?

This B210 was recently posted for sale and its the only image available. Is this the GX model? The Datsun logo has additional markings that are not legible. This would likely have the A14 motor. If it is the GX, will it have dual Hitachi's and performance cylinder head? Car is located in the US. Would like to know if this is worth pursuing before inquiring.

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