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Simeon

Cannon side draft manifolds - vacuum take off

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A question for anyone with Cannon side draft manifolds. Is the vacuum take off the original BMW part no 34331102538 from the factory single barrel manifold?

I have a pair of manifolds and no vacuum take off nipple and I note that the Cannon dual barrel downdraft manifold on Ireland's website needs the BMW part. Is this the same for the side draft manifolds?

http://www.iemotorsport.com/bmw/2002-fuel-intake/022cannon.html

Alternately has anyone got any contact info for Cannon so I can ask them directly? They seem to have the least web presence of any company I have tried to engage with for a long time.

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(edited)

Yes, it is intended that you reuse the fitting from your one-barrel manifold.  I have a good 2 dozen one barrel manifolds here, none with fittings left.

 

You don't typically deal with canon directly, you deal with whomever you purchased the manifold from.  Most specialists will tell you this info up front, if its an ebay guy ... in la bocca al lupo.

Edited by AceAndrew

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34331102538 is the brake booster nipple. Is that what your looking for?[/size]

It would appear so.

Parts are still available according to Realoem. Might also post a WTB. I did think it would be a fractional pipe thread given the UNF/ UNC threads on the studs. So it is most likely a parallel metric thread if I need a generic hose tail to replace. Urrrp.

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(edited)

FWIW: I can't recall which intake manifold I have for my 40's but I found my adapter via the local hardware store. Matched up the threads that were in the manifold and the diameter to my old one and voilà.

 

You can also order that 34331102538 from your local BMW dealership for what looks like around $20 or so

Edited by lilcphoto

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An update for future searches.

So, the BMW part wasn't correct. This comes with an M22 parallel thread and is way too big for the Cannon manifold. I ended up with a 3/8 BSP hose tail which screws in fine but seems to bottom out a bit early. After some research into various pipe threads I suspect that this may be 3/8" NPT but I didn't realise that pipe threads used 'trade sizing' so that the tapping drill / minor diameter actually has no resemblance to the size of the fitting. The BSP thread has 19tpi and the NPT 18tpi. A good dose of Teflon thread tape and it should be fine (at least for this application).

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