Viva Mexico - bringing #854 back to life

Hello lbird...

A while back you posted a question about part no 48 from the QP1 manual. I
know you have answered your question, but thought I would add a picture
of what is in my Mexico... And actually, this is what came out of my QP1..
I suspect the QP1 parts manual is from the Series 1 QP1's.. The series 2 QP1's
had much in common with the Mexico when it came to what was under the
hood (engine, cooling, etc...)... Does this look like what is in your car?

Mike
Image Unavailable, Please Login

 

A great reflection on the guys of Paderborn, and the reason I have dubbed Paderborn Germany, "The Modena of the North"
Beautiful!! Simply a work of Art... Well done.
Ciao,
FGM

 

lbird...

If you don't have it, check with me.. The one pictured is a spare that I had
cleaned up, blasted, and painted... I will also check on the hoses at the firewall
in my car this evening...

Mike

 

Hello Olaf...

Before you purchase this tube, let's see if you really need it.. So some questions:

1. Are you using a Mexico radiator - the one with the hose in the top center of the
radiator that goes to the thermostat housing inlet?

2. I see you are using the heat exchanger that houses the oil filter. Do you plan
on converting to a spin on filter?

3. Your intake manifold is the one piece, NOT the two piece shown in the QP1 manual,
correct?

I tried to take some pictures on my Mexico, but they were to blurry when I downloaded
them so will try again later today or tomorrow... But from looking at my firewall, I saw
four tubes, 2 related to the AC and two related to the heating system.

A very short tube leads out of the firewall to the heater valve that sits in the back
of the intake manifold on the passenger side. The other tube, which is quite long, leads
to the front of the intake manifold to a fitting just below the thermostat housing.

The tube I indicated I would sell you came out of my QP1, which as we know from the
manual is different than the Mexico.. Look at table 32 of the QP1 parts manual, you
will see this tube right off the radiator with no identifying number. Note also they show
nothing in common with the intake manifold. The parts manual is for an early QP1 so
I suspect much changed when they got to the Mexico and the Series II QP1.

So I think the plumbing routing is as follows.

1. Hose from top of radiator goes to the thermostat housing
2. Hose from bottom of radiator goes to the lower tube of the oil cooler cylinder
3. Hose from upper tube of the oil cooler cylinder goes into the water pump
4. Short hose coming through the firewall goes to the heater valve on the intake manifold
5. Longer hose coming through the firewall goes to the fitting on the front of the intake
manifold under the thermostat housing.

I think that about covers it.. As indicated, I will try and take some pictures tonight or
tomorrow..

So in my opinion, you may need a metal tube and/or large diameter hoses to get from
the bottom outlet of the radiator to the oil cooler. You may not need the tube I showed
which has the two smaller outlets coming off it, as I believe the Mexico heating system
hot water comes from the intake manifold.

Hopefully, Paul or another Mexico owner will chime in and confirm this is what is on
their car..

Let me know what you think...

Mike

 

Hello Olaf...

Before you purchase this tube, let's see if you really need it.. So some questions:

1. Are you using a Mexico radiator - the one with the hose in the top center of the
radiator that goes to the thermostat housing inlet?

2. I see you are using the heat exchanger that houses the oil filter. Do you plan
on converting to a spin on filter?

3. Your intake manifold is the one piece, NOT the two piece shown in the QP1 manual,
correct?

I tried to take some pictures on my Mexico, but they were to blurry when I downloaded
them so will try again later today or tomorrow... But from looking at my firewall, I saw
four tubes, 2 related to the AC and two related to the heating system.

A very short tube leads out of the firewall to the heater valve that sits in the back
of the intake manifold on the passenger side. The other tube, which is quite long, leads
to the front of the intake manifold to a fitting just below the thermostat housing.

The tube I indicated I would sell you came out of my QP1, which as we know from the
manual is different than the Mexico.. Look at table 32 of the QP1 parts manual, you
will see this tube right off the radiator with no identifying number. Note also they show
nothing in common with the intake manifold. The parts manual is for an early QP1 so
I suspect much changed when they got to the Mexico and the Series II QP1.

So I think the plumbing routing is as follows.

1. Hose from top of radiator goes to the thermostat housing
2. Hose from bottom of radiator goes to the lower tube of the oil cooler cylinder
3. Hose from upper tube of the oil cooler cylinder goes into the water pump
4. Short hose coming through the firewall goes to the heater valve on the intake manifold
5. Longer hose coming through the firewall goes to the fitting on the front of the intake
manifold under the thermostat housing.

I think that about covers it.. As indicated, I will try and take some pictures tonight or
tomorrow..

So in my opinion, you may need a metal tube and/or large diameter hoses to get from
the bottom outlet of the radiator to the oil cooler. You may not need the tube I showed
which has the two smaller outlets coming off it, as I believe the Mexico heating system
hot water comes from the intake manifold.

Hopefully, Paul or another Mexico owner will chime in and confirm this is what is on
their car..

Let me know what you think...

Mike

 

Hello lbird...

I have some pictures of the plumbing setup in my car.. Not the best pictures,
but hopefully useful. The first shows the major plumbing at the firewall. Ignore
the striped hoses and ignore the cloth A/C hose. The hose resting on top of the
thin metal bar is the fuel inlet to the carbs, so we can ignore that one as well.
The two hoses below the A/C hose are the ones we really are concerned with.
The one with the drop of green coolant attaches to the heater valve which bolts
toward the back of the intake manifold. The other hose is the one that loops around
and attaches to the front of the intake manifold.

The second picture is terrible, but enough for you to see where the outlet from the
radiator connects to the bottom of the oil cooler canister, and the hose from the top
of the canister connects to the water pump.

Hope this helps...

Mike
Image Unavailable, Please Login
Image Unavailable, Please Login

 

Hello lbird...

I am not sure your assumption is correct. Attached is a picture of my
intake manifold. The big inlet on the thermostat housing is where the radiator
hose is attached. It is the inlet below to the left (circled in red) that is in question,
as the other is probably the temperature sending unit. In my previous post where I
listed the plumbing routing, number 5 indicates a long hose that comes out of the firewall
and connects to an inlet in the front of the intake manifold. It is this inlet, circled in red,
that the long hose attaches to.

To put it another way, the long hose that comes through the firewall from the heater core
attaches to the inlet on the intake manifold circled in red.

On my car, I didn't see any hose connection between the oil cooler and the intake
manifold.

It would be good if another Mexico owner confirmed all this...

Hope this helps...

Mike
Image Unavailable, Please Login

 

Hello lbird...

I looked at another diagram for the Mexico/QP1 and you are correct. My car is not
set up correctly. I am missing the small hand valve (left side of engine from front).
Another issue I will need to sort out! When I lived in Florida, I never used the heater.
Living here in TN, I haven't used it either.. But, I am sending you a PM... I am glad
there is someone else here to discuss these issues with.

Mike

 

Hello again lbird...

Looks like this pipe is available from MIE... Part No. 64651... Member cost is approx.
$247.. Read my PM and let me know how you would like to proceed...

MIE website: Maserati Club, Maserati Parts, MIE Corp. MaseratiNet Store

Mike

 

Hello lbird...

The oil temperature sender is typically located in the back by the oil pressure sending
unit. According to the parts manuals for the Ghibli and QP1 (on which the Mexico
is based), the part number for the Water Temp Sending Unit and the Oil Temp sending
unit are the same. According to these manuals there is a difference, depending on
whether you have Smith's or Borletti gauges.

I would probably try MIE for the sending unit, but if yours is Smith's, you may have
luck finding them in the UK..

If you need a picture of what the sending unit looks like, let me know and I can send
you a picture of the Water Temp Sending unit which is identical to the Oil Temp Sending
Unit.

Mike

 

MIE also carries the sending unit for the Veglia gauges. Try this link:

Maserati Club, Maserati Parts, MIE Corp. MaseratiNet Store - TEMPERATURE SENDING SWITCH

Ivan

 

Just wire in a resistor with whatever sensor you prefer. Can be hidden up behind the dash. They are very cheap and you can easily experiment until the gauge reads as you want. Been there and done this but not on a Maserati.

Pete

 

All,

Does anyone know what these vent thingies originally looked like? Were they painted black? Mine were so old that it was hard to tell whether the black residu they had was 47 years of dirt or remainders of what was once black paint.

Thanks!
Bart
Image Unavailable, Please Login

 

The ones like this on my Ghibli had black wrinkle/crinkle paint.

 

Very fine black wrinkle.
FGM

 

Lbird on your post #194 the engine is fitted with a dual clutch flywheel. On post #217 it appears to be a single disc clutch flywheel. Did you change it? or is it just a bad picture. IF you changed it why?