I need to order an Electric Water Pump Adapter from Franklin Performance in NZ .. however I'm not sure what the differences are between the various options:
• Select Flange: 2-Bolt vs. 3-Bolt
• Select Hose Fittings: 16AN vs. 20AN vs. 38mm Tube vs. 32mm Tube

I had the Billet Water Manifold from Chips Motorsports, however that part is no longer available. This is for a 13B Renesis swap into my 1980 SA.

 

Have you tried contacting Franklin Performance?

 

Yes .. I reached out to Franklin, however with the different time zones there is a delay in communications.

I will post my findings if other members are interested.

 

the 2 bolt vs 3 is easy. the 74-85 engines have the alternator bolt in the water pump so the gasket to the engine looks like this


the 86-2003 and i think Rx8, but you should check, the alternator bolt goes in the iron, so its like this


stock radiator hoses are 38mm on the Rx7's, Rx8 is smaller, but i'm not sure by how much

 

Thanks very much. Now I know what to look for.

• Confirmed that my Renesis is 3-Bolt
• Confirmed that my KOYORAD hose fitting is 32mm

** Never too old to learn new stuff.