Early GTV6

[GG105]

Thanks Guys.

Forum 1 - Me 0 

MD, thanks for the aircon heads up. We know about the system constraints. Not only is it because it only operates through the central vents, there isnt enough space between the dash and firewall to re-engineer it.

Benincas told me they thought transplanting a 75 system would be effective, but they'd never done it.

[MD]

Sportiva. That's a Watts link fulcrum.

GG105

Please refer to the attached photos which detail the core problems with the original 116 air conditioner system. It makes some suggestions for minor improvements. Also explains why the 75/90  works better even though essentially its the same parts just reconfigured. Neither systems has any decent air filtration or screening so that these units get filled with leaf debris and general air borne litter to the point that the airflow in them is abysmal. Taking the entire box out for a clean out is akin to removing tonsils via your anus.

[GG105]

MD, thanks, I see your point and its never going to work with that tiny evaporator. Do you have a picture of a 90/75 box?

Sportiva, in my single piece dash car we swapped them, I didn't do it in the split dash as it is a bit of a mission.

As to rub strips, to the best of my knowledge:

Split dash cars dont have them, nor do pre 83 single piece dash cars remembering all LHD cars are single piece dash, I think.
OZ 83-85 Single piece dash cars have rub strips with silver underneath and silver on the window surrounds
Very late pre Grand Prix cars have the rub strip but no silver underneath.

Correct me if I'm wrong here.

John

[MD]

GG105

See page no.4 from shiny:
http://www.alfaclubvic.org.au/forum/index.php/topic,7349.msg77032/topicseen.html#msg77032

[LukeC]

Benincas told me they thought transplanting a 75 system would be effective, but they'd never done it.

In case you did not see my link:

http://www.alfabb.com/bb/forums/hvac/468889-116-gtv-franken-c-install.html

Effectiveness test performed yesterday: 36* at 7:00 when I did a run to get some Asian takeaway... Cold as ice. I would say it was "Effective".

[carlo rossi]

I thought it was the Watts linkage not panhard
Ill check it out this could well be the drift problem
that dash still great!! love the centred tacho

[Craig_m67]

Benincas told me they thought transplanting a 75 system would be effective, but they'd never done it.

In case you did not see my link:

http://www.alfabb.com/bb/forums/hvac/468889-116-gtv-franken-c-install.html

Effectiveness test performed yesterday: 36* at 7:00 when I did a run to get some Asian takeaway... Cold as ice. I would say it was "Effective".

There's great info hidden in this thread. Perhaps an aircon discussion sticky for all models might be useful, I know that this time of year is the only time I think about selling my 156... Simply because the aircon is so bloody useless! 

[Garibaldi]

Benincas told me they thought transplanting a 75 system would be effective, but they'd never done it.

In case you did not see my link:

http://www.alfabb.com/bb/forums/hvac/468889-116-gtv-franken-c-install.html

Effectiveness test performed yesterday: 36* at 7:00 when I did a run to get some Asian takeaway... Cold as ice. I would say it was "Effective".

There's great info hidden in this thread. Perhaps an aircon discussion sticky for all models might be useful, I know that this time of year is the only time I think about selling my 156... Simply because the aircon is so bloody useless! 

My 147 air conditioning is pretty much the same but as it is not my daily drive I can live with it.

[rowan_bris]

It was 83

I have tinted the windows in my car, upgraded the condesor and compressor and the AC is acceptable if you don't park the car out in the sun and expect it to cool it down

[GG105]

Luke and MD, thanks for the links.

Luke that is great work, I'm not sure the 75 unit will work very well with a split dash, but well worth considering for a single piece dash car. Initially, I think I will upgrade the condensor and see if that helps. I've thought of tinting the windows but I don't think I like the look.

[GTVeloce]

All early GTV6's had a split dash was it 83 I think that a revision to the interior included the single dash and recaro seats?

Interestingly, I have had two 83 GTV's that still had a split dash. I think the GTV's went to single dash in 84.

Clayton - well done on the conversion. Having a 75 and a GTV I can vouch that the 75 AC is much better than the GTV. I have a spare GTV heater box I intend to play with to see if I can rebuild it better whilst maintaining the original exterior. My biggest aim is to push the air rather than pull it.

Tinting is a huge improvement. I cannot stress how much of an difference it made to both my cars. I went for the strongest UV and heat blocking properties rather than the darkest and can now get into the car on a searing hot day and the AC has a chance to get the heat load down to a pleasant level before I have melted. I am also running the TS compressor and hydrocarbons but with the original condenser and evaporator.

[MD]

GTVeloce

I have a spare GTV heater box I intend to play with to see if I can rebuild it better whilst maintaining the original exterior. My biggest aim is to push the air rather than pull it.

That's the ticket. It's why the 75/90 air works better. However it will still lack real air volume to distribute via face level air registers. Air speed and volume is the second key problem with these systems. Insufficient fan capacity. In areas of low humidity, these systems will do an adequate job.

I don't know where you live but here in Queensland (coastal) you don't need a heater and so the quickest way to make the Alfetta evap. boxes get efficient even though the fans are still in the "pull" mode is to lose the heater core.

It may be possible to replace it with some form of 12volt electric heater element that would occupy a fraction of the  original heater core volume and provide perhaps only enough heat for demisting purposes. Just a thought on the fly.

Mate I think you are victim of the "placebo effect". 

Solar films are of marginal value because their main filtration is for UV which does not produce heat. Whereas infrared is not blocked by solar films allowed on car windows and that's where their real worth is. The mirror like reflective films do a good job in this regard but they are not legal for automotive application.

[poohbah]

And the 88 model might have looked like this

Have to say I'm glad the 88 didn't go into production. Interior looks ok, but to my eye the external face-lifts would have really vandalised the sharp lines of the earlier models.

Much better that they progressed to an entirely new look and launched the 75.

[David Mills]

Chassis No 2024 has surfaced in NSW, two before my car, also red, no sunroof, but with a tan leather interior, we don't know if it was factory. No compliance date, as usual, however, the build date says March 82.

Out of sequence builds are nothing unusual in car manufacturing. This seems supports the theory that all the split dashs were built as a batch?

Come on guys, how about some more chassis numbers?

John

My son is thinking of selling his car (see my earlier post #5 for pic).

Chassis 2031,   engine 3751

[GG105]

@ GTVeloce, I think its pretty clear that the split dash cars were mostly built in 1982 and maybe late 1981 and maybe in one batch if the number of 35 - 50 is correct and I believe they were all registered in 1982. We've now identified four with consistent chassis numbers, there must be more out there?

I think the first single piece dash Australian cars were built in 1983.