[Healeys] 100 carb balance pipe

[Bob Haskell]

Alan,

The threads are definitely BSF in these manifolds, but you're right - 
coarse thread is usually the case in aluminum.

Thanks,

Bob Haskell
AHCA 3000 Mk I registrar
http://www.ciahc.org/registry_3000mk1.php

On 04/23/2015 06:21 AM, Alan Seigrist wrote:
> Bob -
>
>  From memory I believe they have a section that isn't threaded in the
> middle, with coarse thread to go in the manifold and fine thread for the
> nut.
>
> Then again I probably have no clue what I'm talking about.
>
> Alan
>
> On Thu, Apr 23, 2015 at 6:01 PM, Bob Haskell <rchaskell at earthlink.net
> <mailto:rchaskell at earthlink.net>> wrote:
>
>     Listers,
>
>     The balance pipe is attached to each intake manifold with two studs.
>     Are the studs just threaded rod, or is there a non-threaded section in
>     the middle?  Assume that they're steel and overall length an inch.
>     Threads are 1/4-26 (BSF/BSC).
>
>     Cheers,
>
>     Bob Haskell
>     AHCA 3000 Mk I registrar
>     http://www.ciahc.org/registry_3000mk1.php
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