Oldenzaal Classics "in-house" Air Conditioning kit

E

eb88

Well-Known Member
Messages
84
Reaction score
39
Location
London
For those not on Facebook, thoughts?

BMW E9 in the workshop for an A/C installation. In the past few months we've designed, engineered and produced our own E9 A/C kit.

-New, modern compressor in custom bracket.
-New, modern condensor with new fan and wiring
-New evaporator and fan
-New center console as per OEM looks with new grilles and ducting.

This car is getting our in-house designed A/C system. All new parts in the engine bay, in the interior looking OEM original. The new condensor, drier and fan are already in.

473357098_1158184682981736_2175884208414858899_n.jpg
473658566_1157581936375344_2358083397473874500_n.jpg
473710845_1157581979708673_6600806339673007329_n.jpg
473627382_1157582056375332_2414033687975203877_n.jpg
473620303_1158184739648397_1180718055189473328_n.jpg
 
How does the center console in the inside look with the evaporator box? The condenser & fan and drier are aftermarket stuff you would use in a retrofit. The evaporator always is the bottleneck due to limited space, the console sides, the front plate, base plate, switches..... if you want to keep the OEM look.
 
Doesn't Don have a kit? I was going to inquire with him... seems much more logical as he is a "local" and obviously knowledgeable guy.... plus I always want to support fellow board members.
 
nyccsi said:
EBAY
www.ebay.com

CNH ZFAD-00036 Siroco 02221332 Blower Fan | eBay

New, but has been sitting in an auto warehouse for a while. Box may be a little dusty or dirty but we do clean them off the best we can.
www.ebay.com
Click to expand...
yes, thanks-- that's blower. I have a 3-speed blower from the same manufacturer in my stock evaporator box. I am curious to see the console, evaporator box, face plate a.s.o.
 
Hats off to these guys if they can fit that evaporator and fan into the stock envelop. Would love to see those photos as to the fitting. That's a big blower, not sure where it is going?

I just recently upgraded my system using @Blinkling evaporator and am satisfied with the results living in Fl. Lots of photos of my installation showing how things were fit.

DIY - Aftermarket Evaporator Installed In A Coupe

Hi Team. I set out this year to find a replacement evaporator for the AC systems in our E9s and E3s (and E12s and E21s). I found one (originally made for a 2007 Land Cruiser). It fits in the original box pretty well and it’s in my car working now. I’ll show you how I did it and then update...
e9coupe.com e9coupe.com

The only thing left to do down the road is to provide full battery voltage to the stock A/C blower via a local relay.

But again any improvement to the evaporator is the key.

jjs2800cs
 
  • Like
Reactions: Dlc
Don sold me the entire A/C and cooling system. The car runs cold in South Florida's heat and humidity. The modern Sanden compressor does not take much of the torque and power from the engine when accelerating. The engine temperature is the same with or without the A/C running. His new parts replaced all the components, and the OEM evaporator was removed and cleaned.
 
Hi Greg, yes I also purchased the hoses and bracket from Don and agree it all works very well. It's covered extensivley here.
This thread is about a garage called Oldenzaal Classics in Holland and an AC kit they are developing / offering.
 
Thread brings up a question. Has anyone completely redesigned the heater-A/C "box" by not using any of the stock components, but still keeping the external envelop the same. Is that what @x_atlas0 and

Oldenzaal Classics​

are doing?

The heater box itself, even if one does not have A/C is quite large and complicated with all of its internal vents and flaps. Seems like there is some "room" there to play with.

Someone some where must have tried a redesign! Photos please.

Honestly most of us who live in warmer climates rarely if ever use our heaters if they are even connected. I'm in FL 34 years never used the heater, so it seems like one could really reduce the the space a heater core needs.

jjs2800cs
 
Last edited:
  • Like
Reactions: Dlc
jjs2800cs said:
Thread brings up a question. Has anyone completely redesigned the heater-A/C "box" by not using any of the stock components, but still keeping the external envelop the same. Is that what @x_atlas0 and

Oldenzaal Classics​

are doing?

The heater box itself, even if one does not have A/C is quite large and complicated with all of its internal vents and flaps. Seems like there is some "room" there to play with.

Someone some where must have tried a redesign! Photos please.

Honestly most of us who live in warmer climates rarely if ever use our heaters if they are even connected. I'm in FL 34 years never used the heater, so it seems like one could really reduce the the space a heater core needs.

jjs2800cs
Click to expand...
I've been working specifically on a combination box, changing as little as possible, in order to minimize extra parts required. That also brings complications, like how do you control something for which there are no stock controls? Where do you put it without compromising the original function? Do you just stick with the base scope, or do you improve the heater too, 'while you're in there'? It's a very interesting set of constraints, as cost will also drive a lot of elements. Given these cars now go for crazy money compared to even 10 years ago, that increase in the price cap leads to interesting alternatives.

To your point, here's the heater cross section diagram from the blue books:
Heater diagram-small.jpg


You can see the heater core takes a lot of space, but there's a lot of functions to consider. The shut-off flap in particular makes it more complicated because it sweeps through the largest open volume.
 
x_atlas0 said:
I've been working specifically on a combination box, changing as little as possible, in order to minimize extra parts required. That also brings complications, like how do you control something for which there are no stock controls? Where do you put it without compromising the original function? Do you just stick with the base scope, or do you improve the heater too, 'while you're in there'? It's a very interesting set of constraints, as cost will also drive a lot of elements. Given these cars now go for crazy money compared to even 10 years ago, that increase in the price cap leads to interesting alternatives.

To your point, here's the heater cross section diagram from the blue books:View attachment 196532

You can see the heater core takes a lot of space, but there's a lot of functions to consider. The shut-off flap in particular makes it more complicated because it sweeps through the largest open volume.
Click to expand...
We all wish you success in your redesign and please keep all of us up to date with your progress.

Yes the heater core/box indeed has a lot of functions, as advanced degrees are in order in trying to understand all the different settings and controls. So certainly some simplification could help reduce the complexity. I just recently completely redid my box as part of a restoration and upgraded the A/C components, and as I posted, my heater core is completely bypassed.

As far as heater functions, basically, at least to me, one only needs some heat at the footwells. some dash vents, and of course a defrost function. I think a different way of controlling the temperature by means of throttling the hot water (temperature) flow instead of mixing not so cold outside air old and always hot air. I think my old Austin Healey had a valve that restricted the water flow to the heater core. I know there has been discussions about the need to have a complete return of the hot water thru the head after the heater core, negating doing that in our case unless one gets into some bypass plumbing. I tried that years ago and there is just not enough space with the Zenith carbs and are too many hoses. So if I ever move to cooler climes I'll just hook up the core again.

Again good luck.

jjs2800cs
 
You must log in or register to reply here.
Back
Top