Weber 45DCOE-9 refurb.

You did a lot of work here. The carbs look absolutely beautiful. Are you going to put the velocity stacks on them, or are you going to use the air cleaner system on the standard Z432 and GTR?

-Ben

Hello Ben,

Thanks for your appreciation of the work I've been doing.

I want to use the original 432 air box / air cleaner assembly that I have - even though it was not standard equipment on a real 432-R. The main reason being that I need to protect the engine from ingesting any small stones / dust that might get into the engine bay if I ran open trumpets.

However, the fact that I am using 45mm Webers instead of the standard 40mm Mikunis means that the trumpets integral to the 432 air box assembly ( they are ingeniously fixed to the outer cover of the box ) are too small. This means I have to modify the original 432 air box and back plate to use the 45mm trumpets - which is quite a lot of work. I'm already on the case though. Thankfully, this is small fabrication stuff that I can do at home.

amazing work! they are gorgeous!

They certainly are gorgeous! Why have you chosen to use 45mm Webers instead of the original 40mm Mikunis may I ask?

Well, with the higher compression pistons, ported head, different cams and exhaust manifold I'm using, I would have had to fit bigger venturis into the Mikunis and re-jet them too.

The 45DCOE-9 Webers I already had on the shelf for a long time ( so they were 'in stock' so to speak ) and Nissan used that model on some of their race S20 engines. With 36mm venturis they are just about ideal for a pepped-up S20, and I have plenty of spares and jets for them. Plus I grew up with Webers, so I know where I am with them.

This particular set are nice and early - just about the correct period for the engine. I can stash the original Mikunis for any future needs.

Sounds sensible enough! You answered my question between the lines too - I didn't think you would use something that didn't have relevance in some way. The Mikunis could go on the car you could build with all your spare parts!