Vitesse inlet manifold threads

[Gadgetman]

Does anyone know what thread the banjo bolt and water inlet fitting are on a vitesse inlet manifold are? They are 3/4" outside diameter but I can't work out if they are unf bsp or npt etc?

They don't look tapered and I wouldn't think a banjo bolt would need a taper.

[Pete Lewis]

Dont know the thread but its not tapered

 

fitted a brass one from canleys and ive got the old banjo somewhere but its a bit cold to go looking right now.

pete

[Gadgetman]

Thanks Pete.

I need to drill out the fwd union and re-tap it ( seized and corroded) I may be able to use the old union as a bush ( grind it off flat and the re-tap it slightly smaller) then install a new pipe tail. But it would be easier to just drill out undersize and the clean out/ re-tap the original thread

[dave.vitesse]

Sometimes you can remove it as follows - The existing nut will normally twist off due to the thread being corroded in. If this happens then weld a bolt, nut head, to the remaining tube. Then use lots of oil and heat working the tube too and throw using a socket and small bar.. Over a period of time the tube should screw out. So far I have been successful using this method, but that doesn't guarantee it will every time. Worth A try.

 

Thanks,

Dave 

[rlabarre]

If it helps you, there is a photo of the banjo bolt on page 65 of the Courier no 434 (Aug 2016). The associated article may give a few tips.

 

Regards,

 

Robin