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Old 04-09-2016   #16
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Re: Retrofit A/C

Whilst mulling it over last weekend, I decided to go the whole hog and buy a new compressor and condenser, so ordered the compressor from a company in Spain and the condenser from Germany.
The compressor people offer a 24 hour delivery service at no extra charge and the condenser people said 48 hours. The condenser arrived from Germany as per the promise, but I'm still waiting for the compressor, lost in transit, apparently.

Bad news is that the new condenser doesn't have the right connections, so I'm returning it, Murphy's Law applies.

I went to the car parts shop and bought a litre of professional cleaner to flush the old condenser to make it ready for the R134a refrigerant and PAG 46 oil.
Removed condenser, thoroughly flushed it through and refitted it, hardly any dirt came out, but it's now pristine internally.
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Old 07-09-2016   #17
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Re: Retrofit A/C

Monday 5th Sep (hottest day of the year so far - 41.5 C).
Compressor didn't arrive, supplier said the delivery company lost it and they don't have another.
So back on went the old compressor, hoses fitted and everything ready for a vacuum test, then charge with refrigerant if there are no leaks.

Tues 6th (8 cooler than yesterday).
Vacuum tested negative for leaks, so in went 600 grams of R134a.
Started up, switched on A/C, nothing happened, not even the compressor clutch engaged.
Revved the engine a little and after about a minute, on it came and blew lovely cold air on me.

One small job left to do before using it is to connect the radiator fan to work with the A/C as well as cooling the engine.

NB: Saved almost 200 on compressor and condenser.
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Old 07-09-2016   #18
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Re: Retrofit A/C

Well you've done well. Where is the air intake for the system? What size engine is it on the car?
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Old 08-09-2016   #19
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Re: Retrofit A/C

Quote Originally Posted by jonti View Post
Well you've done well.
Thanks.
It was quite a learning curve spike for this old man.
Quote Originally Posted by jonti View Post
Where is the air intake for the system?
There is no specific air intake for A/C.

Refrigerant passes to a clutch operated compressor in liquid form, then through a condenser radiator (mounted in front of the engine cooling radiator) as a gas to a filter/drier to the evaporator and back to the compressor.
Evaporator (see pic on previous page) has a dual fan to blow the cold air.
That's the basics.
Quote Originally Posted by jonti View Post
What size engine is it on the car?
1372.
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Last edited by SFB; 08-09-2016 at 06:47.
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Old 19-09-2016   #20
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Re: Retrofit A/C

Managed to wire cooling fan to work off A/C trinary switch with a relay.
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Old 08-06-2017   #21
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Re: Retrofit A/C

Quote Originally Posted by varesecrazy View Post
wouldn't it be easier to fit the Fluid PAS from a Brava..??
Stage 1 is complete, the changeover from single V belt, to multi ribbed belt.
Sourcing pulleys was the most complicated part, especially the crankshaft and alternator.
Alternator adjuster bracket had to be made, but that was a simple job.
The water pump was impossible to find due to the housing rarity, so bought a pump with an alloy housing and made it fit with the help of an angle grinder and power file.
End result meant a shorter ribbed belt was required.
Before and after pics attached.

Last stage will be fitting the hydraulic pump with the modified Brava hoses and pipes, rack and pinion, steering column, reset tracking, then top up with oil and test.
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Old 1 Week Ago   #22
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Re: Retrofit A/C

PAS up and running on 12th July with just a couple of niggles to sort out.
It's possible that the hydraulic pump is past it's prime, it screeches at anything above 3000 rpm, but I have a spare to fit if necessary.



Replacing the steering rack was a lot more difficult than I had anticipated, from start to finish. It was hard enough removing the manual rack, but installing the hydraulic one was impossible without lowering the gearbox, which I wasn't ready to do, so the alternative angle grinder was put to work (slightly) enlarging the hole where the column and rack connect.

While I was in there, I noticed that the gear shift levers were floating, so another few hours work ensued, plus sourcing the rubber bung that Fiat no longer stock.
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Old 1 Week Ago   #23
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Re: Retrofit A/C

Tinypic is playing up, so this from Servimg:

Power steering as the install was completed.
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