I will be working on a cheap blower kit for the a-series engines, approx 6psi boost so standard internals should be fine. Crank pulley will be 140mm od and will be an option of amr500 blower pulley sizes

1. a-series steel crank hub...done
2. 6-rib with v-pulley, 140mm od...soon
3. 50/60/70mm amr500 pulleys...soon

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My new supercharger crank vpulley with 6rib flat should be available in a couple of weeks. In the mean time i have picked up a 120y to use for making parts for a-series engines.

What water pumps are more common short or long? or should i make parts/pulleys for both?

Supercharger pulleys for A-SERIES
Only 10pcs being produced, $140posted comes with steel crank hub, available soon

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If you can help I need these measurements, thinking of producing supercharger kits for A-SERIES. Using amr500 supercharger and manifold adaptor.

Will need for both short and long water pumps

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if anyone can help with sample water pumps i may be able to design a " 1 pulley fits all" for DATSUN A-SERIES

I could produce these if there is enough interest, you would have to use a steel crank hub as strength is required to avoid stress fractures. Here is my drawing i did this morning, I may also consider producing these for other engines if sample crank pulleys are supplied

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separate gilmer belt for blower

Will be producing these vpulleys so you can use standard vbelts and have the option of fitting one of my supercharger crank pulleys onto it.

These will bolt straight onto my steel crank hubs.

I have a crank pulley here, 140mm outside diameter. Is this standard size for a-series crank pulleys?

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Just purchased a S13, so will be producing CA18 Gilmer drive kits soon along with pulleys for SC14 superchargers

i have produced another 10sets, $220posted