taz
Rover Rookie
Posts: 92
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Post by taz on Jan 25, 2006 11:42:53 GMT
Hi Folks,
Hoping someone can help...
Whilst my radiator is out getting a new core, I wanted to flush the block and heater cores.
Does anyone have any tips?
The manual is not helping me much here - for instance I'm not sure however I think the hose coming from the water pump inlet running to a tube that runs across the manifold is the heater return? I'm not sure where the heater inlet is?
Thanks in adv,
Steve.
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Post by Phil Nottingham on Jan 25, 2006 14:13:55 GMT
Flushing has been covered recently at length in the 3 litre section - use SEARCH.
In alloy blocks a hard oxide deposit can fix to the metal which stops effective heat transfer
If you look at the pipes it will be apparent which is the return but I will check for you
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Post by Phil Nottingham on Jan 25, 2006 17:05:32 GMT
I have looked - the return pipe is the one that goes from the pump spigot, under the manifiold to the rear heater branch etc. The pipe under the manifold is, for some strange reason steel, which corrodes internally with encrustantions like boils - if these are removed they often leave a small hole or at least a weakened spot. The alloy heater pipes can also corrode similarly. If a careless owner has refilled with water instead of antifreeze or not replaced it regularly enough the whole system can be corroded up.
Make sure the rad cap is good as it needs the full 15lb pressure
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Post by stantondavies on Jan 25, 2006 17:59:35 GMT
Hi Folks, Hoping someone can help... Whilst my radiator is out getting a new core........ Steve. I hope you are having THREE cores fitted taz, would STRONGLY recommend it to give better cooling. |
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Post by Phil Nottingham on Jan 25, 2006 18:07:58 GMT
Definitely agree
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taz
Rover Rookie
Posts: 92
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Post by taz on Jan 27, 2006 13:31:17 GMT
B****r!
Just picked up my new 2 core today..
Wasnt cheap either. That will teach me not to rush into things without consulting this forum!
Many thanks for your help folks!
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Post by Phil Nottingham on Jan 27, 2006 19:49:44 GMT
Well they were considered good enough when new but that was when 100 Octane high lead cool burning petrol was specified
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Post by glennr on Jan 27, 2006 20:32:40 GMT
Let me get this right. Is a two core radiator two rows of tubes? (all the way down from the top of the rad to the bottom) while the three rows of tubes in a radiator provide greater surface area for heat transfer?  |
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Post by stantondavies on Jan 27, 2006 20:37:37 GMT
Yes, Glenn.
Steve, Mine cost £116 to do 3-core on the 3litre to give an idea of cost (2003).
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Post by Phil Nottingham on Jan 27, 2006 23:16:38 GMT
Mine was a shade more than that in about 1998 from Serck's for my P5B - they are noted for overpricing I just assumed they better (and are now no connection with the old Serck-Marston who made the rads for P5's (and about all other British cars of the time) when they were new.
I would now use a local firm who would still charge less than that and do a 100 times better job!
The 3 core type are slightly thicker to get all the tubes in and they can block up more easily if badly maintained. Standard off the peg cores are used that are just soldered in so there is no "specially made" / bespoke service to attract a high premium - you live and learn just like Taz!
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