Changing Coolant on BX 14RE (150 "Suitcase" block)

BX Tech talk
tranentbx
Confirmed BX'er
Posts: 52
Joined: Wed Jul 03, 2013 7:00 pm
Location: Tranent, East Lothian

Changing Coolant on BX 14RE (150 "Suitcase" block)

Post by tranentbx » Mon Mar 02, 2015 8:03 am

Hi,

I've changed the coolant on my 14RE yesterday but as with previous attempts, I never manage to drain off the claimed 6.5 litre capacity of the system. Yesterday I got about 2.5 litres out.

I've opened up the heater matrix full. I don't suspect a blockage (?) I did notice however that the pipes going into the heater matrix behind the bulkhead are much higher up than the rest of the system so not sure how it would ever drain?
Also, because the engine lies flat on it side, I don't see how having the main flow and return hoses above the engine works when draining?

Anyway, whilst changing the coolant, I noticed a small leak in the radiator where it's corroded right through so I'm going to change it anyway. Whilst I'm doing that, I'd like to be able to get 100% of the old coolant out.

Any ideas?

Thanks

Pascal

User avatar
Kitch
Over 2k
Posts: 6215
Joined: Sun Jul 03, 2005 9:36 pm
Location: Fareham, Hants
x 52

Re: Changing Coolant on BX 14RE (150 "Suitcase" block)

Post by Kitch » Mon Mar 02, 2015 8:34 am

Dab of compressed air will see you right, unless you're fully blocked up.

Then switch to waterless coolant :idea: I've just done it on one car, and will be doing it on most of the fleet. It's witchcraft!
The national BX register - click to submit a car!

1983 16TRS (Sunrise red) - 1987 DTR Turbo est (Venetian red) - 1989 16 Valve (Venetian red) - 1990 16 Valve (Venetian red)

tranentbx
Confirmed BX'er
Posts: 52
Joined: Wed Jul 03, 2013 7:00 pm
Location: Tranent, East Lothian

Re: Changing Coolant on BX 14RE (150 "Suitcase" block)

Post by tranentbx » Mon Mar 02, 2015 10:43 am

Thanks for the tip. will try that when I change the rad. Water looked pretty OK, not any gunk in it. hopefully there's not a blockage in some little dark corner somewhere you cant get in at :roll:

That waterless coolant looks pretty interesting though, does it still need changed every couple years?

Cheers

User avatar
Kitch
Over 2k
Posts: 6215
Joined: Sun Jul 03, 2005 9:36 pm
Location: Fareham, Hants
x 52

Re: Changing Coolant on BX 14RE (150 "Suitcase" block)

Post by Kitch » Mon Mar 02, 2015 4:10 pm

No, the waterless coolant lasts the life of the engine. Boils at 180degrees, doesn't pressurise at 90 or so (so less strain on coolant hoses etc), freezes at -40 (into a slushy, rather than a solid) and no water or oxygen, so no corrosion.

It's not cheap, until you consider the fact you never need to buy it again.
The national BX register - click to submit a car!

1983 16TRS (Sunrise red) - 1987 DTR Turbo est (Venetian red) - 1989 16 Valve (Venetian red) - 1990 16 Valve (Venetian red)

User avatar
MULLEY
Over 2k
Posts: 8401
Joined: Thu Jun 22, 2006 11:10 pm
Location: Derbyshire
x 7

Re: Changing Coolant on BX 14RE (150 "Suitcase" block)

Post by MULLEY » Mon Mar 02, 2015 11:03 pm

Apologies, post hi-jack, could this waterless coolant potentially prevent head gasket problems?
2002 C5 2.0 HDI Estate - Jasmine - Now SORN
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN

I'm not just a username, i'm also called Matthew.

User avatar
Kitch
Over 2k
Posts: 6215
Joined: Sun Jul 03, 2005 9:36 pm
Location: Fareham, Hants
x 52

Re: Changing Coolant on BX 14RE (150 "Suitcase" block)

Post by Kitch » Tue Mar 03, 2015 1:13 pm

MULLEY wrote:Apologies, post hi-jack, could this waterless coolant potentially prevent head gasket problems?
Yes, very much so. Not so much on something like a K-series, which has a number of reasons which they fail (not always pressure-related), but being that most go because coolant forces it's way out of the gasket, then yes it would prevent this as there is next to no pressure. Unless your fire rings fail and the compression from the cylinder leaks out, then there's no reason for a gasket to fail.
The national BX register - click to submit a car!

1983 16TRS (Sunrise red) - 1987 DTR Turbo est (Venetian red) - 1989 16 Valve (Venetian red) - 1990 16 Valve (Venetian red)

Tinkley
1K Away
1K Away
Posts: 1495
Joined: Sat Jun 06, 2009 11:27 am
Location: N Hants England
x 6

Re: Changing Coolant on BX 14RE (150 "Suitcase" block)

Post by Tinkley » Thu Mar 05, 2015 9:07 am

The problem I had with my 150C engine was the Citroen dealer filled the cooling system with tap water and antifreeze. Big mistake on an aluminium engine for several reasons, the primary one being the reactive nature of aluminium (check the Galvanic table) as well as the interface of several other metals being employed in the Pug 150 engine design, like steel core plugs.... and when one lets go, you will know about it!. I'd even advise inspecting and gently tapping the core plugs to ensure they are OK, before you refill the system.

I had no trouble after changing radiator, (which will be full of crud if distilled water has not been used), and using a 50/50 distilled water and blue antifreeze. The rest of the system was flushed through with a hose and clean water and fully drained, then refilled with this mix. I've used the 'pink' anti freeze and distilled on the 1.6 which is supposed to be good for 150k and over 6 years, with no problem.

tranentbx
Confirmed BX'er
Posts: 52
Joined: Wed Jul 03, 2013 7:00 pm
Location: Tranent, East Lothian

Re: Changing Coolant on BX 14RE (150 "Suitcase" block)

Post by tranentbx » Tue Mar 24, 2015 8:02 am

Hi folks, all sorted now. I flushed the system through with garden a hose. A bit of compressed air to clear that out then filled up with fresh anti freeze. It took a good few attempts to get the full 6 litres in though. Definitely not as easy as it should be!