RazMan
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| posted on 11/9/10 at 01:33 PM |
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Grease nipples for vacuum connectors?
I need to find six vacuum take-offs for my TB project and they need to be quite small but still have enough bore to do their job (~3mm hose)
1/8"npt grease nipples would appear to be cheap and plentiful and I wondered if anyone can forsee any problems using them. Any other suggestions
would be welcome as always 
[Edited on 11-9-10 by RazMan]
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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big_wasa
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| posted on 11/9/10 at 01:41 PM |
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what about .8mm Mig welding tips ?
Threaded and often have a flat on the end to wind them in.
The grease nipples have sprung loaded bearings to keep water / dust out will they alter the readings ?
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mad4x4
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| posted on 11/9/10 at 01:47 PM |
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a Grease nipple works that positive pressure on the out side pushes the ball down and positive pressure on the inside holds the Ball against the
sealing face. Using it to plug a TB will not work as the TB is negitive pressure on the inside.
So theory is that as you increase the vacume then the ball may be pulled away fro the sealing face and draw in air..
However I doubt the engine will produce a big enough vacume to cause this to happen
Scot's do it better in Kilts.
MK INDY's Don't Self Centre Regardless of MK Setting !
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mark chandler
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| posted on 11/9/10 at 01:48 PM |
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lpg injection nozzels
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paulf
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| posted on 11/9/10 at 03:22 PM |
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Go to and industrial hose supplier and ask for some air fittings to suit 3mm nylon air line as used on industrial machinery.You will get a choice of
thread sizes such as 1/8 or 1/4 bsp or metric etc and can also get tee pieces etc with matching hose.
Paul
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RazMan
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| posted on 11/9/10 at 04:48 PM |
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Excellent ideas and explanations there chaps - I didn't think of going to my local hose supplier (duh!) so I will do that next week.
p.s. most of the air and lpg fittings are a tad bulky for my application but thanks for all the suggestions
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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Davegtst
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| posted on 11/9/10 at 07:13 PM |
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Can't you just drill out the grease nipples so they are permanantly open?
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40inches
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| posted on 12/9/10 at 09:34 AM |
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How about THESE
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2cv
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| posted on 12/9/10 at 10:12 AM |
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If you have a lathe I'd be inclined to make exactly what you want from brass hexagon bar.
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RazMan
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| posted on 12/9/10 at 10:31 AM |
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quote:
Originally posted by 2cv
If you have a lathe I'd be inclined to make exactly what you want from brass hexagon bar.
Alas, I wish I had a lathe - even the space to keep a lathe  My TB project is costing a pretty penny due to having to farm out the machining
and I could have bought a few lathes, milling machines and pillar drills with the money spent on this type of thing over the years .... ah well.
40inches - that's ideal and not a bad price either - thanks very much
[Edited on 12-9-10 by RazMan]
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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