Would anyone be interested in an roots blower manifold if I manufactured one?

[nateleduc]

Question: What is the smaller hole in front of the bypass valve?

[firebird_1995]

I believe that's the bore for the butterfly valve shaft.

[nateleduc]

I believe that's the bore for the butterfly valve shaft.

If you look on the mounting plate, there is a matching hole as well. I don't think that it is for the butterfly valve shaft.

[firebird_1995]

You talking about the one that looks like a grommet? Can you circle it in mspaint or something?

[nateleduc]

You talking about the one that looks like a grommet? Can you circle it in mspaint or something?

Here ya go!

http://i.imgur.com/nRZv51y.jpg

I can't think of anything it could be. There is a matching hole on the elbow mount as well.

Thank you for all your help!

[firebird_1995]

Oh I was looking at the bypass valves on whipples page. That's a bolt hole for the adapter plate. On the supercharger next to the plate you can see the bypass valve (gold) at the top of the pic. Right below it is a tapped hole.

[nateleduc]

Oh I was looking at the bypass valves on whipples page. That's a bolt hole for the adapter plate. On the supercharger next to the plate you can see the bypass valve (gold) at the top of the pic. Right below it is a tapped hole.

Okay, so that's just to add support/strength to the elbow?

[firebird_1995]

I'd say its more to ensure sealing around that area

[nateleduc]

I'd say its more to ensure sealing around that area

Thats what I meant to say. That bypass valve is going to be tricky, I'll have to shop around for possibly some parts I can scavenge off a carburetor.

As for the bypass valve, the actuator vacuum line isn't anything special, correct? Just a normal engine vacuum line.

[firebird_1995]

Yes just a normal vacuum line