9 replies to this topic

[Echan42]

When fitting a thermostat in my recently acquired 1972 1000ccmini I found this passage blocked with gasket sealant, any idea why the old owner would do this and what effect this would have on the engine? 

 

 

Edited by Echan42, 23 June 2019 - 08:39 PM.

[sonikk4]

Hi,

the link you have posted does not work.

 

When using Imgur please use this for copying your picture over.

BBCode (message boards & forums)

That will post your picture directly to the forum rather members having to go via the link. 

[Echan42]

Thanks! I updated 

[phillrulz]

Thats the bypass pipe i belive, round the back of the head there will be a piece of pipe sticking out the head facing down towards the water pump / pumphose 

[phillrulz]

http://www.theminifo...hose/?p=2484408

 

Here is a picture of the back of the head 

[cal844]

I agree with Philrulz

That does look like the bypass hose stub has been rather crudely blanked

How that engine hasn't overheated due to water loss is beyond me

[nicklouse]

the stat housing surface is not looking fresh.

 

i would be rectifying that blockage soonish and then getting the engine flushed through with some cleaner. idf you are not planning on pulling the power unit soon.

[Echan42]

I agree with Philrulz

That does look like the bypass hose stub has been rather crudely blanked

How that engine hasn't overheated due to water loss is beyond me

It definitely is the bypass hose, why would someone purposely block it?

 

 

the stat housing surface is not looking fresh.

 

i would be rectifying that blockage soonish and then getting the engine flushed through with some cleaner. idf you are not planning on pulling the power unit soon.

Yep, you're absolutely right, I can only.omagime the rest of the circuit is in similar condition, I'll be looking into buying some additive to flush the engine asap

[cal844]

The reason the bypass hose may have been deleted is that the concertina type hoses are rubbish and a previous owner fitted a non bypass pump?

[phillrulz]

As Cal844 said, there is a bodge just as bad as glue together CV boots, you can get a concertina hose about 2" long that goes between the water pump and the head. They are known to fail. Maybe last owner had one blow and just siliconed it shut and swapped the pump for a non bypass type. Or maybe ordered wrong pump and just siliconed it closed. 

 

Dont think there is any benifit with it closed just causes the head to warm up slower as the water cant circulate around the head it has to do the whole loop .