Tubes on frame

[Mark Norris]

Hi John, yes that's correct. The metal tubes are unique to the Mk2 I believe so if a prior owner of your car removed some (say corroded out) then to get new old ones you could go to one of the specialist who has parting out cars (I know Jack R. at MarkIIEnterprises has a number of parting out MK2's behind the premises) or perhaps have some made in stainless (someone on the Forum might have done this).

[Barry Wolk]

Your drawing is excellent. it would help some if you expanded the circuit to show the lever control moving the water valve control/thermostat in the LH duct controlling the water valves.

Here are some photos of the mandrel-bent tubes. Easy to duplicate. The fittings are off the shelf. I believe the water valve end might just be a copper water fitting.

IMG_3141.jpg

IMG_3139.jpg

[JohnC]

So, I went under the hood and the car today and this is what I have:
On the passenger side of the water pump, I have a hose that runs to the vacuum storage tank{SMH}
On the driver side of the water pump I do have a metal tube, run down and back up and out past the engine block with nothing connected.
I don't have any tubes connected to the block like the drawing has. Where do they get connected too. I found these under the car:

Inked20220310_131526_LI.jpg In front of the motor mount on the passenger side

Inked20220310_131624_LI.jpg Behind the oil filter on the driver side.

What am I looking at?

[Barry Wolk]

Block drains.

[JohnC]

Block drains.

Alrighty...then thats not it...I won't touch those

[Mark Norris]

Your drawing is excellent. it would help some if you expanded the circuit to show the lever control moving the water valve control/thermostat in the LH duct controlling the water valves.

Here are some photos of the mandrel-bent tubes. Easy to duplicate. The fittings are off the shelf. I believe the water valve end might just be a copper water fitting.

IMG_3141.jpg

IMG_3139.jpg

The first photograph shows the unobtainable steel fitting I mentioned before. Be very careful if you ever have to remove it and make sure the antifreeze has corrosion inhibitor in it.

I've never actually seen the vacuum thermostat valve since its hidden away in the ducting (I guess beside the footwell?). I assume the hot air passes over it and if its too hot the vacuum to the brass valve is reduced so closing it a little and reducing the water flow to both heater matrixes? (or should I say matrices). Its funny that it took car designers decades to realize that its cheaper, quicker and easier to regulate heater output by controlling the air flow through the heater matrix rather than the water flow rate though it.

[Mark Norris]

So, I went under the hood and the car today and this is what I have:
On the passenger side of the water pump, I have a hose that runs to the vacuum storage tank{SMH}
On the driver side of the water pump I do have a metal tube, run down and back up and out past the engine block with nothing connected.
I don't have any tubes connected to the block like the drawing has. Where do they get connected too. I found these under the car:

Inked20220310_131526_LI.jpg In front of the motor mount on the passenger side

Inked20220310_131624_LI.jpg Behind the oil filter on the driver side.

What am I looking at?

Hi John, it seems the heater pipework has been removed and messed about with by a prior owner. There is no reason why the water pump suction side should be connected to the vacuum tank! The drivers side seems to have been plugged up probably because the vacuum valve failed (dumping the coolant on the ground) so the owner just removed everything in frustration. I guess some of the fittings locations on the engine have been fitted with 3/8" NPT threaded plugs. You can probably get a pipework set from Jack R. including new brass fittings and vacuum valves and MarkIIEnterprises ..it won't be cheap. The vacuum valves can also be purchased from Dennis Carpenter (about $95 each) since they are also used on Thunderbirds of that era.

The right angle brass fittings are 3/8" NPT male by 7/8-18 UNS-2B 5/8" INVERTED FLARE female, available from hydraulics suppliers or get them from Jack R.

Having said all that the vacuum control thermostat valve might also be missing and I understand thats a lot harder to find (Barry might have some information).

[JohnC]

Hi John, it seems the heater pipework has been removed and messed about with by a prior owner. There is no reason why the water pump suction side should be connected to the vacuum tank! The drivers side seems to have been plugged up probably because the vacuum valve failed (dumping the coolant on the ground) so the owner just removed everything in frustration. I guess some of the fittings locations on the engine have been fitted with 3/8" NPT threaded plugs. You can probably get a pipework set from Jack R. including new brass fittings and vacuum valves and MarkIIEnterprises ..it won't be cheap. The vacuum valves can also be purchased from Dennis Carpenter (about $95 each) since they are also used on Thunderbirds of that era.

The right angle brass fittings are 3/8" NPT male by 7/8-18 UNS-2B 5/8" INVERTED FLARE female, available from hydraulics suppliers or get them from Jack R.

Having said all that the vacuum control thermostat valve might also be missing and I understand thats a lot harder to find (Barry might have some information).

Great info...yes, whoever had the car before really butchered it up... not the guy I bought it from, he had no interest in getting the car back to normal and sat for years....anyway...where would these brass fittings located on the block? Is it near or under the manifold. Thank you for your help and knowledge...much appreciated

[Mark Norris]

Here is the link to the vacuum valves of which you'll need two;

https://www.dennis-carpenter.com/car...embly-in-block

This the link for the vacuum thermostat control valve which is operated from a cable/lever from the control consol, this is the valve Barry mentioned;

https://www.parts123.com/parts123/yb...9a~Z5Z5Z5AAAHV

Here are the brass elbows, you'll need three.

https://www.parts123.com/parts123/yb...Z5Z5Z50000129A

Before all this though make sure you can get or make a set of tubes.

The 5/8" ID heater water hosing is easily found at any car parts store.

The 90 degree brass connector on the drivers side of the engine is screwed into a 3/8" NPT port in the side of the cylinder header head between the front and next exhaust header connections. Can only be fitted with the exhaust header removed if I recall correctly.

Similarly the straight steel fitting on the passenger side screws into a 3/8" NPT port in the side of the cylinder head between the rear and second from rear exhaust header connections. Again most easily fitted with the exhaust header removed.

Note originally the exhaust headers did not have gaskets at their connection to the cylinder heads but I think most owners fit gaskets these days.

I'll take some photos for the 90 degree brass fittings at the water pump suction side.

[JohnC]

Here is the link to the vacuum valves of which you'll need two;

https://www.dennis-carpenter.com/car...embly-in-block

This the link for the vacuum thermostat control valve which is operated from a cable/lever from the control consol, this is the valve Barry mentioned;

https://www.parts123.com/parts123/yb...9a~Z5Z5Z5AAAHV

Here are the brass elbows, you'll need three.

https://www.parts123.com/parts123/yb...Z5Z5Z50000129A

Before all this though make sure you can get or make a set of tubes.

The 5/8" ID heater water hosing is easily found at any car parts store.

The 90 degree brass connector on the drivers side of the engine is screwed into a 3/8" NPT port in the side of the cylinder header head between the front and next exhaust header connections. Can only be fitted with the exhaust header removed if I recall correctly.

Similarly the straight steel fitting on the passenger side screws into a 3/8" NPT port in the side of the cylinder head between the rear and second from rear exhaust header connections. Again most easily fitted with the exhaust header removed.

Note originally the exhaust headers did not have gaskets at their connection to the cylinder heads but I think most owners fit gaskets these days.

I'll take some photos for the 90 degree brass fittings at the water pump suction side.

Wow...thank you for this...I'd hug ya if there wasn't an ocean between us