4 replies to this topic

[hhhh]

What's it for? Won't it get blocked by the spacer and gasket?

[timmy850]

The manifolds are often drilled to suit a number of different carbs. This manifold can use twin 1.5" (HS4 HIF38), 1.75" (HS6 HIF44), or H4 

http://www.minispare...t/C-AEG490.aspx

 

The H4 carbs are 1 1/2" and have the two vertical studs

http://www.minispare...n/C-AUD178.aspx

[hhhh]

Sorry I guess I wasn't clear. The hole is in the flange on the carb and you can see what looks like a vertical half pipe of brass , about 1/2" down the hole. At the bottom of the carb bore is a tiny hole below wear the butterfly stops at idle, with a brass tube liner that doesn't quite line up with the half pipe in the flange face hole.

[Sprocket]

Pretty sure thats the passage for the cold start enrichment (choke)

[Retroman]

They usually have an ally bung in the hole near the face, and as you say just get blanked off with the gasket / spacer anyway