Chris_G
39 posts
Joined: 30/12/2004 09:27:39
Location: Milton Keynes United Kingdom (Excluding channel Islands)
heater valve screw thread
Oh No! Ive managed to strip the thread from one of the bolts that holds down the heater valve on the left hand side of the cylinder head. Its now totally smooth and pretty much beyond repair. Am I looking at a new cylinder head or can this be replaced somehow? I cant see any way of removing it from the head.
Posted: Jul 31, 2005 04:45 PM
CrAzYSteve
5 posts
Joined: 25/01/2008 11:38:21
Location: Cambridge United Kingdom (Excluding channel Islands)
HEATER VALVE ORIGINAL ANGLED TYPE ON CYLINDER HEAD
Hello,
I have just upgraded my 998cc to a 1275GT engine, all looks the same and fits with no issues in the car, the issue i have being new to the mini world is the heater, i have noticed that where the Original heater valve fits on the cylinder head its all block in. Does the 1275GT engine have another way of heating the car. Im lost lol
Hope you can help
Steve
Posted: Apr 06, 2010 03:09 PM
John
1948 posts
Joined: 28/05/2006 16:49:46
Location: cambridge United Kingdom (Excluding channel Islands)
heater wont turn off and a smell tht catches your throat is coming out of it...
wd40 on heater valve comming of head to free it off prob seazed
Posted: May 06, 2008 11:51 PM
Lucas
19 posts
Joined: 23/03/2008 12:12:08
Location: Paull United Kingdom (Excluding channel Islands)
Advice appreciated :-)
The heater valve is missing and nothing has been put in place, there is just a space where something can go, i think i'd like to get hold of the part im missing although i know it can be a can of worms if its been taken out because something else is wrong.. do you know which heater valve i will need? thanks again for your help
Posted: Mar 30, 2008 12:20 PM
abs
98 posts
Joined: 08/11/2007 20:20:11
Location: cornwall United Kingdom (Excluding channel Islands)
Re.
If the heater is blowing cold first make sure you have a thermostat fitted as the lack of one causes poor circulation. Then check the heater valve in the engine bay is actually allowing water to circulate, finally you may have an air lock, if so pull the pipe off the heater valve and blow hard down the pipe with the rad cap removed, top the pipe up with water and quickly push back on and tighten, top rad up again. Job done. (hopfully!)
Posted: Dec 24, 2009 08:24 PM
Mark Houghton
10 posts
Joined: 31/07/2012 09:03:15
Location: christchurch New Zealand
Heated manifold
Hi guys , just a small question on heated manifolds and heaters - can you run an inline heater valve after the heated manifold but before the heater so the heater can be shut off for warmer weather but the manifold is still heated ?? Would this work ? I do not have a heater valve on the head just an elbow
Posted: Jul 04, 2022 08:55 AM
allan gray
3 posts
Joined: 30/06/2021 21:10:00
Location: Walton On The Naze United Kingdom (Excluding channel Islands)
Hi Mark, if you run the heated manifold with the heater valve inline when you close the heater valve the water will not flow through the manifold, in my opinion this would be the best way to pipe the manifold to the cooling system because you would not really want the manifold heated in the summer months.
Posted: Oct 04, 2022 02:55 PM
Georges mini
15 posts
Joined: 16/06/2006 16:47:40
Location: oldham United Kingdom (Excluding channel Islands)
MY HEATER ONLY BLOWS COLD
I had same problem with my 998, i had just replaced the gasket on the heater valve after changing the head, after flushing and checking the thermostat and changing the water pump and after 2 days of pondering and re flushing the system and dismanteling the heater 2 times, i checked the heater valve and found the gasket had no hole in it to let the water through, to cerculate through the system, somtimes it is the smallest of things and the simplest things wich causes us trouble .
Posted: Dec 04, 2007 05:50 PM
163 posts
Joined: 09/09/2004 09:32:06
Location: DK-2000 Frederiksberg Denmark
No Heat ?!?!?
I installed my new heater valve today, but couldnt get any heat whatsoever from the heater. I drained the block, installed the valve, re-filled the system and fired it up without the radiator cap fitted. The thermostat is an 88C unit, and the temp rose to about 88-90 (ish), but the heater hoses remained stone cold - regardless of the positioning of the heater cable. So, thinking that there could be a blockage somewhere in the system, I let things cool down a bit, disconnected the heater hose from the lower radiator hose and blew into it, watching for displaced coolant flow from the lower radiator hose takeoff. While blowing, I operated the valve by hand to ensure that it was functioning. Since I witnessed coolant flow from the lower radiator hose takeoff, so can I safely assume that the overall cooling system is clear of any blockages? Why, then, isnt there any heat? Im searching through the boxes of bits tomorrow for another thermostat, just in case, but this is puzzling me.
Posted: Jan 27, 2005 11:17 PM
Tim
1848 posts
Joined: 18/10/2004 09:40:59
Location: Bournemouth United Kingdom (Excluding channel Islands)
heater blowing cold air
There definitely should be a heater control valve somewhere - if yours is a 1998 model it may well be under the dash near the heater itself, rather than in the engine bay.
Posted: Jun 25, 2017 01:08 PM
1987 Mini advantage
It should operate the valve on the cylinder head that allows hot water into the heater.
Posted: Jan 12, 2013 06:14 AM
Heater only blows hot
Firstly - do you have a heater valve (mounted on the left hand end of the cylinder head)? If so, is it operational?
Posted: Apr 01, 2008 04:30 PM
Barry Brown
511 posts
Joined: 23/06/2008 12:08:31
Location: New Barn United Kingdom (Excluding channel Islands)
rad
Hi, Not sure why you would want to do it but here's a suggestion.
http://www.s-v-c.co.uk/product/heater-water-valve/
use the internal radiator valve to control a heater matrix bolted to the car in the style of an oil cooler. Use a couple of t-pieces and this in line valve to reinstate the internal heater unit. Your second radiator can then be used when needed by pulling the internal heater knob. The internal heater will have to be and additional knob on the dash.
The usual way around cooling issues is to leave the engine driven fan in place and fit a kenlow to the wheel side of the rad.
Posted: Jun 11, 2013 09:49 AM
Rob
28 posts
Joined: 24/11/2007 19:39:13
Location: fraddon United Kingdom (Excluding channel Islands)
Hi there, I have just got myself my first mini after ages looking for one I can afford, it is a 998cc Austin 1000 from 1980 and is not the best looking mini in the world but its mine and I want to make it nice again!!!!
There are a few problems with it at the mo but the one im looking at is the heating, I have looked through all the posts on here trying to see what everyone else have done but not found the answer to my problem.
Now then, what I have done is to run water through the heating system to try and clear out all the air and dirt that could be in there, and it ran through ok, but after putting all the hoses back it still did not work, I have looked at the heater valve and it is fine and the coolant levels are fine too, so I decided to try and run water through the whole system, was not to sure if this was a good idea but went and did it anyway from the hose that comes out of the heater valve and goes off to the heater all the way through to coming back out the heater valve (engine block), at first the water came but it was really dirty (but it was coming through) and it cleared up, then I changed the hoses round and ran it the other way, the water was coming through ok, did this a few times and then put it back together and ran the engine but the heater still did not work, I tried to run the car with the heater valve taken off but no water came out of the engine block, this to me would show that the water pump was not working but the engine is not overheating so it also seems that the pump is working, the heat gauge sits at normal when im driving but when the car is running but still it goes to between norm and high so it seems to be ok!!!!!
Please can someone help with this, any replies would be good as this is doing my head in now, seems so simple but I just can not get it working!!!
Thanks to all
Posted: Dec 03, 2007 05:55 PM
taffy1967
1783 posts
Joined: 27/09/2006 18:58:07
Location: Rhondda-Cynon-Taff United Kingdom (Excluding channel Islands)
New 1430 getting hot
Or you have an air-lock in your cooling system? So try removing the radiator cap, open your heater valve so the water can also circulate around your heater matrix, start your engine and let it warm up until the water is just about bubbling over and then replace the cap.
Posted: May 02, 2007 09:00 PM
Issigonis mini
24 posts
Joined: 28/10/2004 15:54:18
Location: Maidenhead United Kingdom (Excluding channel Islands)
At a rough guess I would say that the heater is airlocked, try discounting the heater return hose at the joint to the bottom radiator hose and then run the engine with the heater valve open. When coolant starts to flow out of the pipe from the heater unit switch off and reconnect.
Posted: Jan 28, 2005 02:37 PM
richard
11 posts
Joined: 27/07/2005 21:22:21
Location: coventry United Kingdom (Excluding channel Islands)
cold heater!!!
i have opened the clamp today, took it around the block and reved the engine a lot, i think i need to run it for a while, if it does not get hot do i some how need to open the valve? im also going to order a cable today, i also took the heater bolts off to see how the switch pannel comes out but it does not drop enough to get to the switch nuts, will i have to drain the cooling system?
Posted: Dec 15, 2005 02:24 PM
James
161 posts
Joined: 28/06/2006 11:39:53
Location: Downham Market United Kingdom (Excluding channel Islands)
heater stuck on
Funnily enough, we have just encountered that problem this weekend! Im led to believe that the heater valves are prone to failing, after all, they are only made of plastic.... As you look into the engine bay from the front, then the valve should be over to the right, for heater off.... ours makes no odds which position it is in, its still hot! More bloody expense! :-) James
Posted: Aug 06, 2006 11:30 PM
Can't get heat in MPi with Air Con
Not familiar with the aircon models, but I assume there is a tap or valve of some sort on the top of the cylinder head that allows you to turn the flow of hot water to the heater on or off.
Posted: Jan 04, 2015 05:14 PM
Hi guys, I have a 98 spi cooper and it is blowing cold air out the heater, I have replaced the thermostat, flushed it but no luck - do these have a heater control valve hidden somewhere? could it be the problem? I know the earlier cars had them on the head but this does'nt - any help welcomed - cheers Mark
Posted: Jun 23, 2017 10:06 AM