ANOTHER OVERHEATING BONGO, HOPEFULLY SORTED

dandywarhol · Post by **dandywarhol** » Sun Apr 08, 2007 10:31 am

Why has this been locked

Post by **Ian** » Sun Apr 08, 2007 2:20 pm

I don't know who locked it. Sorry to over rule moderators, but I can't see any reason why it should be locked. Surely the discussion has not reached a conclusion?

Thread unlocked.

francophile1947 · Post by **francophile1947** » Sun Apr 08, 2007 2:48 pm

Thanks Ian

Vanmanerik · Post by **Vanmanerik** » Sun Apr 08, 2007 3:09 pm

Quite a lot went on with PM's when the topic was locked.

It was stated that too many cooks spoil the broth, some things were said that shouldn't be said etc.but we are all friends again now.

So ........... The show must go on.

Peg leg Pete · Post by **Peg leg Pete** » Sun Apr 08, 2007 8:29 pm

I locked the thread chaps, I wrongly thought that all had been discussed on this subject, but now it is unlocked again - are we going to to pass on ideas and opinions so that members who still have overheating problems or worries can benefit

The Great Pretender · Post by **The Great Pretender** » Sun Apr 08, 2007 8:56 pm

Could the position of the thermostat be part of the problem?
Rover had head problems with the K series engine that was caused by the stat position

francophile1947 · Post by **francophile1947** » Sun Apr 08, 2007 9:07 pm

Water flows in the opposite direction in the Rover, allowing cold water directly into the head - that is why they have so many problems - see http://www.mgfmavhh.ukf.net/

brorabongo · Post by **brorabongo** » Sun Apr 08, 2007 9:23 pm

Very interesting thread

Touch wood no problems with overheating. When I checked the radiator the coolant was bright green, which I guess is good? although in the headertank it looks a bit darker.

Would'nt it be good if someone was to draw a coolant circulation diagram for the Bongo? I might help us understand the whole thing a bit better

dandywarhol · Post by **dandywarhol** » Sun Apr 08, 2007 9:33 pm

Thanks for unlocking it Peter.

I'm no chemist Grumpo but I do know that in the early 90s PSA Group (Citroen/Peugeot) had a big warranty clain headache when they purchased thousands of litres of a particularly bad batch of antifreeze. This had the corrosive effect of disolving most things alloy in the cooling system - water pump impellors sheared off, heads erroded and radiator matrices collapsed. Even 5 years down the line from new PSA were fitting new head, radiator and water pump (I think they went to a coated steel impellor at the same time) under warranty - but only if the dealer pushed hard enough - the whole sorry episode was kept fairly hush, hush - presumably because PSA didn't actually manufacture the dodgy antifreeze.

It was mainly the turbo diesels of the day that were affected - 405/BX in particular, the non turbos seemed to be less of a problem, so I can only put it down to a hotter engine and the reaction with the deadly juice...........so I agree with you there jamesnjane - the engineers got it wrong there

PS.....remember the case (pardon the pun) of the dodgy Austrian wine in the mid 80s?? they were using antifreeze to sweeten it - rumour had it that people were going blind after drinking it.................blind drunk probably

Peg leg Pete · Post by **Peg leg Pete** » Sun Apr 08, 2007 9:38 pm

Dandy Ian unlocked it, still waiting for my wrist to be smacked for locking the thread in the first place

dandywarhol · Post by **dandywarhol** » Sun Apr 08, 2007 9:42 pm

................consider it smacked......

The Great Pretender · Post by **The Great Pretender** » Sun Apr 08, 2007 9:45 pm

Have no knowledge of the MGF, but looked through that post,the thermostat is on the inlet side of the engine.He modified it to go on the outlet side. Its a shame that he didnt log pressure in the cylinder head too as this may have prooved intresting.

Peg leg Pete · Post by **Peg leg Pete** » Sun Apr 08, 2007 9:45 pm

Thanks dandy, so back to the thermostat, when it opens is coolant flowing out of the engine to the radiator, thats how it appears to me

Peg leg Pete · Post by **Peg leg Pete** » Sun Apr 08, 2007 10:21 pm

That does not seem to tally with the diagram Demon has posted on the hose thread

dandywarhol · Post by **dandywarhol** » Sun Apr 08, 2007 10:34 pm

Looks to me that the coolant flow goes out X (higher point in the engine block) to where I have the swollen hose (oooh Matron) to Y at the top of the radiator and back into the engine block from point Z at the bottom of the radiator via the thermostat.

ANOTHER OVERHEATING BONGO, HOPEFULLY SORTED

Cold Engine.