I have two A14 engines. Both have triple crank pulleys. They're different from each other, and neither one looks anything like the triple pulley that's on the tech wiki. In both cases, each layer is a different size. The largest one is about 130mm on both (and it's the only one I use.) One has about a 100 and about a 60, while the other has about a 110 and about a 90. They're both engines right out of what were previously stock 210's so I don't think they've been swapped. I'm mostly just curious: are these normal pulleys?

I'm trying to figure out how to mount a 36-1 trigger, and considering different ideas, and since I only use one sheaf it's pretty tempting to pull one off one of the engines and stick it in the mill and cut the teeth right into the pulley.
But eventually I'd like to put a small supercharger on the engine, and in that case I'm going to want a single sheave with a Gilmer extension on it, and maybe I should just do that now. I dunno.

The Datsun parts catalogs show two triple-belt crankshaft pulleys:

* type M70
* type G51

No triple-belt setups are listed for the 210 (B310). However, I too had a triple-belt pulley, I think they are for the dealer-installed (non-factory) 210s

There seem to be at least three:
1. 138/134/130 (the photo in the wiki)
2. 130/100/60 mm
3. 130/110/90 mm

Can you post photos of yours? This is the first we've heard of those sizes

i meant to say dealer-installed A/C

when used with a supercharger, the factory cast pulleys have a bad habit of cracking through the keyway. U can fit a steel crank hub to make it reliable


to keep it simple, I used a bolt-on 36-1. It never slipped (why would it, it doesn't carry a load)

But if you have access to a mill, it is an elegant solution

I bet a dollar mine are the two you list: 130/110/60 and 130/100/90.
I just last night cut the 90 down to 89 to fit an EDIS wheel.
And the steel pulley is a great idea: thanks!

Huh, looks like KE Motorsports, the manufacturer of that steel hub, is out of business.
I can make one on my own if I have to. I have the dimensions now, and I can cut a smooth edged keyway so it won't crack at the corners.