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Coolant Flow Through Rad
Posted: 12 Jul 2008, 06:10
by CycloneMike
I've been messing about sorting my engine conversion for months now. I'm just checking my plumbing before I hopefully get it running.
Haynes states that coolant flows from top (hot) to bottom (cold) through the radiator. The problem is that both the hoses connect to the bottom of the rad, so does anyone know which is in and out please.
Is it as obvious as the upper one is the top or is that too easy?
Heres a link to a pic.
http://shop.justkampers.com/popup_image ... 12769/id/a
Many thanks.
Posted: 12 Jul 2008, 07:13
by Mocki
Posted: 12 Jul 2008, 07:46
by CycloneMike
Mocki,
Thanks for your time with the pictures. I have the top pic. The rad in the bottom pic has different plumbing to my rad. Perhaps I'm being dim but I'm still not sure it helps me decide which is in and out on the rad type shown on the JK pic I posted? Its the same as mine where the inlet and outlet are vertically above/below/ each other at the rear bottom o/s of the rad. They are not left/right as in the top pic. Although it shows direction it didn't clarify to me which port was which?
Re: Coolant Flow Through Rad
Posted: 12 Jul 2008, 08:05
by Grun
IIRC, the coolant flow to the top of the radiator is through a vertical metal pipe which is part of the radiator assembly.
The bottom one comes out of the .....errr... bottom.
Mike
Re: Coolant Flow Through Rad
Posted: 12 Jul 2008, 08:51
by kevtherev
Grun wrote:IIRC, the coolant flow to the top of the radiator is through a vertical metal pipe which is part of the radiator assembly.
The bottom one comes out of the .....errr... bottom.
Mike
thats correct... it may give the appearance of what you are telling us mike.
Posted: 12 Jul 2008, 11:07
by CycloneMike
Many thanks for the help.
I've plumbed it up.
Engine started first time and setlled down to a nice even tick over.
It all bled out nicely. I've tested it first with water so just got to drain it out and do it again with antifreeze.
Well chuffed would be an understatement!
Posted: 12 Jul 2008, 15:05
by Mr Bean
CycloneMike wrote:Many thanks for the help.
I've plumbed it up.
Engine started first time and setlled down to a nice even tick over.
It all bled out nicely. I've tested it first with water so just got to drain it out and do it again with antifreeze.
Well chuffed would be an understatement!
As an aside and not wishing to start a debate I would suggest that in these days of water pumps there may not actually be any measurable difference in performance whichever way you connected them as the thermosyphon process is miniscule in comparison to the water pump. Not that I would consider testing that proposal anyway.
Cheers
Ken
Posted: 12 Jul 2008, 15:50
by kevtherev
ken simmonds wrote: I would suggest that in these days of water pumps there may not actually be any measurable difference in performance whichever way you connected them
big cheese on hydro dynamics then Ken?
I would think that the pump works more efficiently when it
hasn't got the weight of a full radiator to push
up... as well as a long pipe full
As an aside and not wishing to start a debate
ooo thats red rag to the bulls on here
Posted: 12 Jul 2008, 19:40
by CycloneMike
Don't mention water pumps to me! Damn Subaru.
After posting my last I was sat in the sun feeling pleased with myself whilst running a coolant flush through it all, looking towards the end of a very long and much interupted project, then oh wheres that puddle come from? the blasted water pump gasket had gone.
Fortunately I had one but what a job. Engine cradle dismantled to remove cam covers, cam belt and various sprokets and tensioners to remove before you can even get at the pump. Then the bolts sheared in the stat housing, so they needed drilling, and it went on.
Just goes to show WBX is not the only engine to leak water and cause headaches!
Posted: 12 Jul 2008, 23:17
by Mr Bean
kevtherev wrote:ken simmonds wrote: I would suggest that in these days of water pumps there may not actually be any measurable difference in performance whichever way you connected them
big cheese on hydro dynamics then Ken?
I would think that the pump works more efficiently when it
hasn't got the weight of a full radiator to push
up... as well as a long pipe full
As an aside and not wishing to start a debate
ooo thats red rag to the bulls on here
No big cheese but when you poke your brain into such a wide range things for as long as I have some stuff just can't get by you. Of course you would be right if there was no weight of water pressing down the other way. Think about it.
Cheers
Ken
Posted: 13 Jul 2008, 11:00
by kevtherev
ken simmonds wrote:. Of course you would be right if there was no weight of water pressing down the other way. Think about it.
Cheers
Ken
I have ... and thank the lord every day, that gravity assists me on this planet
Posted: 13 Jul 2008, 14:28
by Mr Bean
kevtherev wrote:ken simmonds wrote:. Of course you would be right if there was no weight of water pressing down the other way. Think about it.
Cheers
Ken
I have ... and thank the lord every day, that gravity assists me on this planet
In a last ditch effort to save my knackered old frame from the old codgers knackers yard I have taken to swimming once a week. After 45 mins of weightlessness in the water I am shocked and horrified how much effort it takes to climb the steps to get out of the water. I soon get back to what passes for normal though.
Cheers
Ken
Re: Coolant Flow Through Rad
Posted: 13 Jul 2008, 15:11
by Grun
Kevtherev wrote..........
I have ... and thank the lord every day, that gravity assists me on this planet
The WBX cooling system is such a 'Carp' design that I often think it needs all the assistance it can get........Thermo...gravity... and even a prayer or three for divine intervention from the Reverend Kev.
Mike
