A/C experts required

[Hoonigan]

Hello,

I am in need of some A/C advice, I'm looking to install it I'm my GT40 replica was planning on fitting this kit

http://www.carbuildersolutions.com/uk/universal-ai...

As specified by SouthernGT, in fact I have found this same kit cheaper second hand (albeit new and unused) so all good but then got thinking... I am not requiring nor connecting the heater matrix of this unit as I will be installing a heated screen and have a 400BHP heater in the boot and there is no shortage of hot air in these cars! So instead I am thinking about getting this one instead with a four output plenum

http://www.carbuildersolutions.com/uk/universal-ai...

But I have noticed there is a big difference in BTUs 17000 compared to 10800! Now that means bugger all to me but I assume it's not as good at cooling? Is that correct? or does the fact that one has a heater mean it has a bigger BTU rating and the cooling would be the same, I have called CBS but they did not know the answer either??

Obviously I would like the saving of the cheaper unit but not at the expense of cooking on the way to Le Mans, and A/C expert out there who could advise?

Cheers

Edited by Hoonigan on Thursday 27th March 21:24

[Fastdruid]

Actually the first one doesn't mention if that's cooling or heating!

There should be a BTU rating for each 'function', ie the one I'm fitting to mine is 290CFM, 14000 A/C BTU and 12000 BTU heat.
http://nostalgicac.com/evaporator-units/indash-eva...

I did buy it from the USA while on holiday and 'ship' it back in my luggage though.

[Fastdruid]

Actually that first one looks identical to mine apart from the outlet.

[powerstroke]

the second one Looks like standard univesal 757 formula hang on evaporator I've fitted them in mini buses and security vans it will be more than enough for a car !!the other one with a heat coil would also work fine,the main thing is get the biggest condenser that will fit in and make sure it gets plenty of air flow, best to Wire a second relay into the compressor relay feed so the cooling fan/s run with the compressor this makes it work efficiently keeps the system pressures low and less load on the compressor....hope this helps..

[Hoonigan]

Great thanks for all the advice. Dave the Nostalgic AC unit you bought, does it come with a wiring loom, relays fuses etc...?
I notice they do a cooling only version of it that would be perfect for me and being the same unit as the CBS would take the custom plenum that SGT make.

http://nostalgicac.com/evaporator-units/indash-eva...

Cheers

Paul

[Fastdruid]

Yes, wiring loom, relay, thermostat and heater valve.

I know what you're saying about not fitting heating but I'd recommend you at consider at least fitting a combo unit with a heater even if you don't connect it. Relatively easy to connect up if you ever want (two 'T' sections in the front, a valve and a bit of piping) but a pita to swap an air-con only unit for a combo unit if you decide you want some heat.

[Hoonigan]

Cheers Dave, fair point about the heater and I think I will take your advice and go with the heat too

Just battling with the brake pipes at the moment, I had completely forgotten what a bd this stuff is to work with....

Edited by Hoonigan on Wednesday 2nd April 00:23