Coolant Bleeding problem on KV6 - Page 5

paulh260260 · 31st March 2021, 19:38

Quote:

Originally Posted by T-Cut

Hello Paul, by-passing the oil cooler is often discussed, but I don't recall any detailed instructions, tho there may be some general description. I'd suggest doing a key word search to sift out the threads.

TC

Hi TC

Just done a little more research on the Oil cooler and from what I've gleaned I think bypassing is a case of unclipping the coolant hoses joining them together and then presumably blanking off the now empty ports on the oil cooler

Does that sound right?

If so what is the internal diameter of the coolant hoses that go into the oil cooler, maybe there is a plastic plumbing coupling that I could find for the job.

As regards the ports on the oil cooler I would need to know the external diameters to find something to blank them off.

As an expert on all things cooling I'd hope you may know these figures!!!

Thanks

Paul

T-Cut · 31st March 2021, 21:15

Quote:

Originally Posted by paulh260260

Hi TC. Just done a little more research on the Oil cooler and from what I've gleaned I think bypassing is a case of unclipping the coolant hoses joining them together and then presumably blanking off the now empty ports on the oil cooler. Does that sound right?

You simply join the coolant hoses together with a 'suitable piece of pipe' (easy to say). The oil side ot the system will not be affected.

Quote:

If so what is the internal diameter of the coolant hoses that go into the oil cooler, maybe there is a plastic plumbing coupling that I could find for the job.

From my observations and limited measurements, the coolant hoses of all the petrol engines are 32mm bore throughout the system.

TC

paulh260260 · 31st March 2021, 22:00

Quote:

Originally Posted by T-Cut

You simply join the coolant hoses together with a 'suitable piece of pipe' (easy to say). The oil side ot the system will not be affected.

From my observations and limited measurements, the coolant hoses of all the petrol engines are 32mm bore throughout the system.

TC

Thanks TC

So what about the ports that become empty do they need covering or not?

Cheers

Paul

paulh260260 · 31st March 2021, 22:33

Quote:

Originally Posted by T-Cut

You simply join the coolant hoses together with a 'suitable piece of pipe' (easy to say). The oil side ot the system will not be affected.

From my observations and limited measurements, the coolant hoses of all the petrol engines are 32mm bore throughout the system.

TC

Hi TC

I've found some plastic hose connectors that are 32mm OD so should fit into these hoses, however the ID is 26mm and they are 90mm long will the reduction in bore have any effect on the pressure on the coolant system?

Cheers

Paul

SD1too · 1st April 2021, 06:33

Quote:

Originally Posted by paulh260260

So what about the ports that become empty do they need covering or not?

Bearing in mind the position of the oil cooler at the bottom of the engine, it would be good practice to seal the open connections, if possible.

Simon

paulh260260 · 1st April 2021, 07:20

Quote:

Originally Posted by SD1too

Bearing in mind the position of the oil cooler at the bottom of the engine, it would be good practice to seal the open connections, if possible.

Simon

Exactly my thoughts Simon, just have to figure out how to do it now!!!

Paul

T-Cut · 1st April 2021, 15:34

Quote:

Originally Posted by paulh260260

Hi TC. I've found some plastic hose connectors that are 32mm OD so should fit into these hoses, however the ID is 26mm and they are 90mm long will the reduction in bore have any effect on the pressure on the coolant system?

I wouldn't worry about that Paul, any connector needs to have at least 2mm wall thickness, maybe 3mm. All the standard connectors for the cooling system will have a bore around 26mm, maybe less in places.

TC

paulh260260 · 1st April 2021, 16:55

Quote:

Originally Posted by T-Cut

I wouldn't worry about that Paul, any connector needs to have at least 2mm wall thickness, maybe 3mm. All the standard connectors for the cooling system will have a bore around 26mm, maybe less in places.

TC

Thanks TC

Do I need to drain the oil as well as the coolant prior to bypassing the oil cooler.

Cheers.

Paul

SD1too · 1st April 2021, 19:19

Quote:

Originally Posted by paulh260260

Do I need to drain the oil as well as the coolant prior to bypassing the oil cooler.

That's a very relevant question Paul. Disconnect one of the coolant hoses first and try to catch the water in a bowl. Does it have oil in it? If it doesn't, then I would question the need to proceed any further with a by-pass.

Simon

paulh260260 · 1st April 2021, 20:01

[QUOTE=SD1too;2874599]That's a very relevant question Paul. Disconnect one of the coolant hoses first and try to catch the water in a bowl. Does it have oil in it? If it doesn't, then I would question the need to proceed any further with a by-pass.

Simon[/QUOTE

Thanks Simon

But could there be a blockage in the coolant side of the cooler ( maybe caused by k seal for example). Bypassing the cooler will remove blockage and provide a clear hose.

Does that make sense?

Paul

1st April 2021, 20:01	#50
paulh260260 Still learning... Gold 04 75 Connie SE 2.5 V6 Petrol, Silver 52 Connie SE 2.5 V6 Petrol, 04 BRG Connie 2.5 V6 Petrol Join Date: Sep 2009 Location: MANCHESTER Posts: 231 Thanks: 129 Thanked 40 Times in 27 Posts	[QUOTE=SD1too;2874599]That's a very relevant question Paul. Disconnect one of the coolant hoses first and try to catch the water in a bowl. Does it have oil in it? If it doesn't, then I would question the need to proceed any further with a by-pass. Simon[/QUOTE Thanks Simon But could there be a blockage in the coolant side of the cooler ( maybe caused by k seal for example). Bypassing the cooler will remove blockage and provide a clear hose. Does that make sense? Paul