joneh
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| posted on 26/12/20 at 03:56 PM |
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Xflow water pump outlet thread size
Hi all,
Does anyone know what thread for the hose adapter is used on a crossflow water pump. It's the smaller hose that runs to the heater matrix, or in
my case straight to the inlet manifold.
I assume its 5/8 NPT as it's near 17mm but it doesn't poke through my 5/8 bolt size checker thing and other sites suggest its 3/8 which is
way too small.
My current adapter is too small on the hose side, which I'm trying to match with the inlet manifold (about 13mm).
Thanks!
Jon
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rusty nuts
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| posted on 26/12/20 at 04:02 PM |
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I may have a straight fitting , can check tomorrow i
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obfripper
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| posted on 26/12/20 at 05:33 PM |
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Imperial pipe thread sizes refer to the internal bore of the pipe it is intended to be cut on, not the outer threaded diameter, 3/8 npt sounds about
right for 17mm od.
You may find some brass hose tails that will work from plumbing suppliers, the angled ones are dear from burtons and not available new anywhere
else.
Dave
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joneh
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| posted on 26/12/20 at 07:11 PM |
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Ah that makes sense and explains the confusion on my part.
Anyone know if I can just blank both these off as I don't have a heater, or does water need to flow through the inlet manifold?
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obfripper
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| posted on 26/12/20 at 07:52 PM |
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They should be connected as you need bypass flow to help the coolant warm up evenly and prevent hot spots.
Dave
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joneh
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| posted on 26/12/20 at 08:01 PM |
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Cool, thanks.
Jon
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steve m
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| posted on 26/12/20 at 08:56 PM |
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The top of the Water pump vertical, and the inlet manifold are joined together, with 16/17 o/d mm hose, both of the threads should be the same,
and are the same as gas/plumbing fittings,
i cant remember which,
If you dont connect them up, with a downdraft carb, you will get carb icing, as the fuel will be to cold
steve
Thats was probably spelt wrong, or had some grammer, that the "grammer police have to have a moan at
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JMW
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| posted on 27/12/20 at 10:53 AM |
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it will be a bsp size.
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JMW
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| posted on 27/12/20 at 11:02 AM |
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Not sure now, thinking about it. Apologies for adding confusion.
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rusty nuts
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| posted on 27/12/20 at 11:26 AM |
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honey,you have u2u
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joneh
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| posted on 31/12/20 at 07:35 PM |
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Big thanks to Rusty Nuts (Mel) for sending me out the right size part and being too kind to accept anything for it!
Thanks!
Jon
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