omega0684
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| posted on 5/6/09 at 11:31 AM |
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water flow question
the outlet on the pinto thermastat housing is 32mm and i have reducer on the water pump outlet from 38mm to 32mm, but both the inlet and outlet on my
rad are 26mm, obviously i can put reducers in the pipe work to get them to match, but how does this have an effect on the cooling efficiency? if it
has any effect that is?
answers on a postcard........
Alex
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Mr Whippy
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| posted on 5/6/09 at 11:35 AM |
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it's just speeding the water flow up through the pipes, which then drops drastically in the radiator before again speeding up out the outlet
hose
don't worry about it
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AndyGT
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| posted on 5/6/09 at 11:35 AM |
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what car is the rad from?
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omega0684
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| posted on 5/6/09 at 11:40 AM |
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it was a custom built rad for a zx12 rush
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mcerd1
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| posted on 5/6/09 at 11:50 AM |
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I wouldn't worry about it Alex, as long as the engine temp. is about right
the rad is probably way OTT for you engine anyway....
...or are you thinking about engine upgrades again ? 
[Edited on 5/6/09 by mcerd1]
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BenB
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| posted on 5/6/09 at 11:52 AM |
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Ain't a problem as long as the reducers are gentle. If you had a sudden change in bore you'ld get some funky flow going on which might
upse the coolant flow.... As long as you don't it's not a problem, the coolant will simply flow quicker through the narrower tube.
The big question I suppose is whether a radiator designed for a zx12 will be sufficient for a pinto. I suppose it's all to do with the
differences in efficiency, BHP levels etc..... Should suffice given the huge amount of air entering a Seven's nosecone....
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omega0684
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| posted on 5/6/09 at 12:07 PM |
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i've been googling for half hour and im struggling to find 45 degree reducing hoses, im after 32mm-25mm, can anyone help?
or do they only come in 90 degree reducers and straight reducers
[Edited on 5/6/09 by omega0684]
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James
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| posted on 5/6/09 at 12:18 PM |
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quote:
Originally posted by omega0684
i've been googling for half hour and im struggling to find 45 degree reducing hoses, im after 32mm-25mm, can anyone help?
or do they only come in 90 degree reducers and straight reducers
[Edited on 5/6/09 by omega0684]
There's a fair few to choose from here:
http://www.rallydesign.co.uk/index.php?manufacturers_id=21&osCsid=mtass72b2qrus11u9e10omn5l7
maybe they'll have what you want.
No reason you can't have separate 45° and reducer though... apart from the cost! lol!
------------------------------------------------------------------------------------------------------------
"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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Vindi_andy
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| posted on 5/6/09 at 12:30 PM |
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You still struggling with your plumbing alex
I believe they have only been made in straight or 90 degree so far.
There will be no moulds for 45degree reducers but you could try contacting Viper performance hoses http://www.viper-performance.co.uk/ to see if they
could make the but there will probably be a minimum order qty and a setup premium
[Edited on 5/6/09 by Vindi_andy]
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omega0684
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| posted on 5/6/09 at 01:15 PM |
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quote:
Originally posted by Vindi_andy
You still struggling with your plumbing alex
yeah, im thinking now that the front end design of the DAX with the nudge bar is a s**t idea, it would be so much easier if it wasn't there, i
reckon now its more of a DAX gimmic to make you buy the "CUSTOM" rad from them for £300!!!!! thieving bast*rds!
i reckon i could solve the problem if i had an S-bend piece of hosing, 25mm ID,with a couple of inches of rubber each side of the s part! and it would
save me loads of money in new bits!
anyone got anything that sounds like my descriotion lying around, long shot i know!
[Edited on 5/6/09 by omega0684]
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mcerd1
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| posted on 5/6/09 at 01:45 PM |
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looks like something you'd need to weld / braze together....
do you know all the dimensions you'd want for this s bent thing ?
some people cut the nudge bar off
[Edited on 5/6/09 by mcerd1]
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omega0684
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| posted on 5/6/09 at 01:51 PM |
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quote:
Originally posted by mcerd1
some people cut the nudge bar off
[Edited on 5/6/09 by mcerd1]
i was seriously thinking about that! 
i have found
these
elbows, i could use these with some 1" id radiator hose
[Edited on 5/6/09 by omega0684]
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02GF74
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| posted on 5/6/09 at 02:39 PM |
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your cat must have fat fingers as that linky no worky.
check out autoperformanceonline on ebay.
has 90 degre elbos that you can join up to make staggered pipe like you are after...... but you are looking at 25 mm ID so can you not use a length of
straight hose or is the run too short to avoid kinking?
I don't see you mention how long this piece is - take a look at rover v8 water pump to manifold hose see GHC 709
I am not sure if it 25 mm thoughm think it is smaller - in fact I have some old one that I can post FOC - but I'd need to measure it first to
see if it is of use. (NB old means usable but you'd want to replace should it prove to be successful).
----- looked at a ruler - pretty sure it is gonna be 5/8 inch i.e. too small.
BTW - don't quite understand what effect this has on your colling problem - you are thinking your current set up is restricting water flow?
[Edited on 5/6/09 by 02GF74]
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02GF74
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| posted on 5/6/09 at 02:46 PM |
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quote:
Originally posted by mcerd1
looks like something you'd need to weld / braze together....
[Edited on 5/6/09 by mcerd1]
yeah, two 90 degree copper pipe bends and some shrot lengths of pipe to join - check out B&Q.
you do mention length - I missed it - that Rover pipe is just the job then, if the ID is 25 mm.
forgot - that ebay seller has loads of 90 degree and straight reducers - no 45 deg reducers, in fact I have not seen that anywhere but then not really
looked.
[Edited on 5/6/09 by 02GF74]
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omega0684
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| posted on 5/6/09 at 02:47 PM |
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linky worky now
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02GF74
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| posted on 5/6/09 at 02:51 PM |
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quote:
Originally posted by omega0684
linky worky now
sorry but those are shit*. very sharp bend plus plastic - I wouldn't use them on a hot water pressurised system - better off with
copper plumbing bits if that is what you want to do.
* now waiting for someone to say they have used those successfully ..........
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omega0684
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| posted on 5/6/09 at 03:42 PM |
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i have used them successfully in the top half of my coolant system, they are fine
plus its gonna have to be a sharp bend other wise i can't get the pipes threw
[Edited on 5/6/09 by omega0684]
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