Datsun 510 on FCR carbs

[Riceburner]

Started a new little project with my bro to install the two spare FCR41’s I have to his newly rebuilt 510.

He sourced a Nissan SU manifold for only $50. I spent time yesterday sand blasting and cleaning up the ports with a dremel lol. My first try at porting, so hopefully it’s ok. It’s going on a stock L20B with a brand new V912 head running a 72 degree cam.

 

Mikuni couplers will need to be ordered but I think they’ll bolt straight on to the manifold studs. We might also have a look at port matching the manifold now it’s been buzzed a little. 
 

Looking to run it with the gold Keihin ‘power blade’ velocity stacks. They’re 50mm long, 65mm at the opening and run a blade half way through the stack. It’s meant to improve air speed at low to half throttle.

 

The hardest thing will be fuel supply as the FCRs run plastic T pieces that are held in by the adjacent carb, now the spacing has changed we need a new solution.