temperature rise and no heater

lizard · Post by **lizard** » Sun Jan 27, 2008 8:47 pm

I am not going to mention the most excellent Haydn alarm that I fitted today, nor am I going to mention the Mason alarm that I have not bought yet but will buy in the near future.

The overheating problem seems to affect a large number of owners, the more the problem is discussed, more solutions may be forth comming as in the mention of the unmentionables mentioned above.

Peg leg Pete · Post by **Peg leg Pete** » Sun Jan 27, 2008 9:01 pm

Having just read most of this topic, I can see no harm in people adverticing products that can help members prevent overheating problems etc

I reckon members who make a little money in exchange for a lot of development and research time spent, are not breaking rules, I am sure if they were Ian would have had a word with them

ronhud · Post by **ronhud** » Mon Jan 28, 2008 7:06 pm

If I want to recommend a product because someone has asked a question relevant to it I shall do so. If I have adverse comments I shall do so. So there!!

For the good of us all I think an introductory mention by a developer is fine. As far as I can see we should encourage the development of useful accesories for the Bongo. Surely we can tell the difference between helpful advice and spamming.

Ron

Socket Set Sue · Post by **Socket Set Sue** » Mon Jan 28, 2008 8:59 pm

What I do not understand is that there seems to be more effort put into warning devices, and the sales theereof, than trying to understand what the causes of the overheating are and what we have to do to prevent them.

I do think that a good start has been Flippas silicone hoses because this will maybe encourage the replacement of some of the hoses most likely to leak and should prevent overheating.

My own pet project, after looking at http://www.mgfmavhh.ukf.net/ , would be a gizmo to fit a thermostat in the outlet immediately from the cylinder head and remove the existing thermostat from the return, anyone clever enough to try this out??

Just a thought.

Peg leg Pete · Post by **Peg leg Pete** » Mon Jan 28, 2008 10:59 pm

Socket Sue there has been plenty of discussion on all the factors that can cause overheating etc

regular coolant change and most importantly bleeding of the system (with a good flush of the system prior to coolant change

) hoses monitored and changed at first sign of wear, rad and expansion caps checked for leaks, thermostat checked periodically

And if you feel the need for extra montoring all well and good

dandywarhol · Post by **dandywarhol** » Mon Jan 28, 2008 11:20 pm

If the fault was in the design then surely ALL Bongos would have an overheating problem SSS/VME?

As the majority of the beasties are running around without any problem then it must be down to poor maintainance in the vehicle's early days, infrequent coolant changes, sludge build up, running only on water in warmer climes etc. I wouldn't be blaming the manufacturer..........

Socket Set Sue · Post by **Socket Set Sue** » Mon Jan 28, 2008 11:30 pm

I read all the info I could find for it before buying it and the first thing I did was empty and flush the cooling system, I removed the thermostat and run it for a couple of weeks like this and then flushed it again and replaced the thermostat, loads of crud was washed out and it has run as 'normal' since then, I know the thermostat is working correctly as the return hose warms up as the water flows around the system. My only gripe is that it seems to take a long time for the thermost to open and the coolant to start flowing. A lot of folks on the forum say that the heater matrixes do the majority of the cooling and the thermostat rarely opens but I do not subscribe to this.

I would imagine that the Mazda Engineers got it right or they would boil all the time, but a bit of tweaking here and there would not hurt so after months of looking for info, talking to others who look after their own vehicles, not just Bongos, I was taken by the article I mentioned - see http://www.mgfmavhh.ukf.net/ -, read it and see if you can make sense of it.

I have a mate with a workshop and I may at some point ask his opinion about fabricating a housing and see if it is a feasible project, unless we have a budding engineer willing to take the job on and let us have any feed-back - it may be the way forward, who knows?

dandywarhol · Post by **dandywarhol** » Tue Jan 29, 2008 12:08 am

I reckon the reason the 'stat is on the return side is for longevity of the 'stat. I also think the stat only has a small part to play in the Bongo setup and remains closed/partly open for most of the time and that way is more reliable than one which is always liquifying it's wax to operate.

I've only really felt the lower hose to be HOT when bleeding out the system - and it does get HOT!
Even after a rapid climb to over 2,000 ft in less than 3 miles to Applecross (1/2nd gear a lot of the time) in summer, the bottom hose was only warm.

Socket Set Sue · Post by **Socket Set Sue** » Tue Jan 29, 2008 12:43 am

Did you read the article at http://www.mgfmavhh.ukf.net/ ?

It made a lot of sense, most of the points it raised were the same as we see in the forum so there is a connection, but as was stated in an earlier post most Bongos are running quite happily without coolant probs.

I just enjoy looking at problems and trying to come to a cure if possible.

temperature rise and no heater

LO

Cooling the Bongo

Coolant.