One for the Metro Turbo owners - coolant plumbing
Turbo Mini Forums

As some will know I'm trying to use a front mounted radiator based on the Mk1 Metro installation.

I have a conflict with the bottom hose heater stub and the turbo actuator. Hose is NOS, I think I got it from Andy last year, the QH part number is correct for Mk1....

Possibly my turbo inlet hose is making things worse pushing it slightly to the right (top in photo).....



But the route around the timing chain breather cover still looks about right.

But if I put everything in,



The hose just rubs on the actuator.

Are they this close in a Metro (bearing in mind th red hose in my pictures wouldn't be there to push it a bit).

Schrödinger's cat - so which one am I ???

only pic i have

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That's not a turbo hose.

The turbo and n/a mg metro hose just has an outlet for the expansion tank.

The heater pipe comes of the join between the radiator and the steel pipe, into the oil filter heat exchanger, up and into the manifold coolant pipes, out the other end into another steel tube and then of into the heater.

Schrödinger's cat - so which one am I ???

I may have a good used one throwing round. Also I'm pretty certain that there's one on the second breaker that we haven't got round to touching yet. You are welcome to one free of charge to get you going and prove the theory if you like.

Thanks for the offer Andy, a photo alone of the MG/Turbo one would do me fine at the moment while I think about re-routing things.

No rush, your description alone has given me a few ideas.

Schrödinger's cat - so which one am I ???

Found these ones, will get a pic of the hose asap

Thanks Andy,

It all makes sense now....

I'll have to run my hoses a bit different to how I intended......

Schrödinger's cat - so which one am I ???

I think I'm on my 4th or 5th version of my cooling system....

Not so. The turbo hose goes to the expansion tank and the inlet manifold.

From reading the haines book of lies, I get the impression that they kept changing it over the years.

The lack of the modine oil cooler on the turbo means there was never any choice but to plumb into the inlet manifold. The 1275s without a heated inlet manifold would have had the hose that only connected to the header tank.

Edit: Actually, thinking about it, I'm not what the 1275s without the heated manifold did with the water, as it had to still go through the heater rad.

Edited by metroturbo on 12th Jun, 2010.

Right,

No coolant to my inlet manifold - as it's a custom made injection plenum - and no oil/water intercooler.

So my bottom hose just needs the take off to the bottom of the expansion tank (no problem in the current position with a standard Metro bottom hose) and a return stub for the heater circuit (definately a problem with the current hose).

I think I can work around it all but nothing is easy.....

Schrödinger's cat - so which one am I ???

Thinking this through, it's surely only the N/A MG Metro that had the water/oil cooler ???

Didn't the Metro Turbo use a standard air cooled oil cooler ???

I now remember the Tee piece in the bottom hose just before it entered the radiator and as the hot water came out the sandwich plate (as all models) surely after it went through heater/manifold/oil cooler and back in the Tee piece there would have been no need for the second stub on the pipe off the water pump.

The problem is, the only catalogue I can find online (QH's one) doesn't list the water pump pipe any different on the MG models. But then again, it doesn't list the Tee piece, just a short straight hose for them all and I definately remember the Tee piece.....

Schrödinger's cat - so which one am I ???

Richard is obviously right about the turbo, had forgotten about the oil cooler.

The T pieces where definitely available as we have one on the van.

Personally, I'm using a samco mini hose set with an alu tube with a spout for the expansion tank. Or I would be if I hadn't had it made 100mm too long.

Edited by apbellamy on 13th Jun, 2010.

Well I thought I had thrown away all the MG Metro hoses but when I checked the box it seems I have only thrown away the top hose and the Tee piece - I still have the loop to the water pump (and the heater hoses).



And indeed the N/A MG does only have one stub, not two. It still begs the question how does the second stub clear the actuator on the Turbo MG (assuming it has to use the two stub pipe as it doesn't have the water/oil cooler) but that's not so important now !!!

So If I can find an Auto Factors that can actually bring up a different part number for the MG variant (unlike the QH catalogue online) then I'm back in business.

I too was thinking along the lines of a second seperate Tee further down the line but had only seen silicone ones - I like the idea of an aluminium one (will take up a lot less room) so Andy, do you mind me asking where you sourced yours from ???

Schrödinger's cat - so which one am I ???

That's the one I was on about.

The alu pipe was made by the same chap who made my expansion tank. Can't find him on ebay anymore.

I will probably just ask Mr Austin to make me a new one when I get that far (and have measured up properly ).



If that one is any use to you...

I'm just on my way out to put my cooling system together, I'll grab some pics,

essentially, I have the normal mini side rad bottom hose going to the heater, and to a couple of 90deg flexi's into the bottom of the cinq rad via a bit of ally tube i have tiged a 15mm takof into tho go up to the cinq header tank.

Andy, neat work by whoever it was....

Edited by Rod S on 13th Jun, 2010.

Schrödinger's cat - so which one am I ???

In my case, the mini hose is 25mm and is shaped to the standard mini rad outlet location. I'm going to cut the end of and put a 90 degree reducer on to go from 32mm down to 25mm, then a shorter length of alu tube with the spigot. Then a 90 degree silicon bend onto the chinq rad that I bought this week. I was planning to use an MPi rad, but they are fairly small and awkward in comparison to the fiat one.

I can't find a ready made section for what I need so chances are I'll buy a tube of the right length and a suitable spigot and then get somebody to glue them together.

I've just thought, to get around the problem with the profiles, I could just buy standard aluminium joiners of the two different diameters - which obviously have the spigot/retaining ring profile on them and cut and weld them together....

Schrödinger's cat - so which one am I ???

i dont know if these help at all rod ,mk 1 metro thick rad ,and the bottom hose has 2 take offs, one heater, one header tank , i dont know what that hose is off i built it in 1998 so my memory has failed pathetically.

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Thanks Robert, just shows every one is different.....

Looking at this,



it looks like the standard Metro (with two stubs) but shortened a bit where it goes on the pump.

Was it a "standard" Metro T3 setup back in 98 (hence trying to avoid the actuator) ???

Unfortunately I've just looked at mine and can't replicate it

As I was doing testing with a sidemount radiator I've used the later timing chain cover with the flatter but deeper (front to back) and taller breather cannister so I can't cut the hose and bring it forward...

Schrödinger's cat - so which one am I ???

yes good point rod it was on the t3 then .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM