IMPROVED A/C & HEATING SYSTEM - Page 9 - LotusTalk - The Lotus Cars Community
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post #161 of 186 (permalink) Old 03-14-2014, 10:49 AM Thread Starter
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Anyone have these pictures? The orignal post link doesn't work anymore.
Seems to work just fine Improved Ac
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post #162 of 186 (permalink) Old 03-14-2014, 10:15 PM
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Oh thanks I see it now at home. Work must have been blocking it or something.
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post #163 of 186 (permalink) Old 04-23-2015, 12:27 AM
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I have a RHD elise'06.
Did all the mods except installing the thermostat, has anyone here actually managed to install it without the clam off on a right hand drive Elise?

Would be a bummer if I had to take the whole clam off just to install a small thing like a thermostat.

Thks.
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post #164 of 186 (permalink) Old 04-23-2015, 11:36 AM
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@SirLotus , I had an issue where if the ac was not on the vents would blow HOT air all the time. I played with all the air buttons and when I switched the system to recirculated air the air cooled off. I could hear the actuator move when it happened. Now my interior fan will blow cool air instead of hot air without the ac on and ac seems cooler. I take it either the hot water valve or a door flap was not functioning properly. Any thoughts?

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post #165 of 186 (permalink) Old 04-24-2015, 08:02 AM
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#Sirlotus , I had an issue where if the ac was not on the vents would blow HOT air all the time. I played with all the air buttons and when I switched the system to recirculated air the air cooled off. I could hear the actuator move when it happened. Now my interior fan will blow cool air instead of hot air without the ac on and ac seems cooler. I take it either the hot water valve or a door flap was not functioning properly. Any thoughts?
If you want to tag a user, use the @ symbol. @sturgeongeneral
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post #166 of 186 (permalink) Old 04-24-2015, 10:38 AM
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If you want to tag a user, use the @ symbol. @sturgeongeneral
Thanks Doge!

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post #167 of 186 (permalink) Old 04-26-2015, 08:28 AM Thread Starter
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@SirLotus , I had an issue where if the ac was not on the vents would blow HOT air all the time. I played with all the air buttons and when I switched the system to recirculated air the air cooled off. I could hear the actuator move when it happened. Now my interior fan will blow cool air instead of hot air without the ac on and ac seems cooler. I take it either the hot water valve or a door flap was not functioning properly. Any thoughts?
This is a very common problem that is caused by heat soak. The heat from the radiator is heating the ambient air in the main air duct. The answer is to insulate the duct as illustrated in this thread.
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post #168 of 186 (permalink) Old 04-26-2015, 07:10 PM
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This is a very common problem that is caused by heat soak. The heat from the radiator is heating the ambient air in the main air duct. The answer is to insulate the duct as illustrated in this thread.
Michael
At first I thought it was heat soak but when I played with the recirculation control it sounded like the door flap moved and now blows cold air. I was wondering if there was a common problem with the door flap sticking?

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post #169 of 186 (permalink) Old 08-31-2015, 11:22 AM
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Worst part of the elise is mediocre at best a/c!
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post #170 of 186 (permalink) Old 11-09-2015, 05:58 AM
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This is a very common problem that is caused by heat soak. The heat from the radiator is heating the ambient air in the main air duct. The answer is to insulate the duct as illustrated in this thread.
Michael
Would upgrading to a better radiator with better top mounted fans lessen the heat soak issues? I mean, there is only this much you can insulate. The A/C is really killing me....I need some form of major revamp.
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post #171 of 186 (permalink) Old 07-13-2016, 06:47 PM
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Have anyone successfully upgraded the A/C blower? Personally, i will prefer a blower that pushes more CFM
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post #172 of 186 (permalink) Old 07-14-2016, 02:53 AM
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The blower pushes a ton of CFM, unfortunately it gets lost in the distribution plumbing. I estimate 200cfm comes out of the heater box, less then 100 gets out of the vents. If you have removed the cover plates on the recirc vents that is the biggest change.

The blower is actually huge
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post #173 of 186 (permalink) Old 07-14-2016, 07:51 AM
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The blower pushes a ton of CFM, unfortunately it gets lost in the distribution plumbing. I estimate 200cfm comes out of the heater box, less then 100 gets out of the vents. If you have removed the cover plates on the recirc vents that is the biggest change.

The blower is actually huge
Does anyone have the model number of the blower? will try to search for it's specifications.

The blowers on my Toyota can roar at maximum speed, this blower seem to trickle out only

(it is of cos not scientific to compare mass flow base on noise levels)
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post #174 of 186 (permalink) Old 07-14-2016, 08:45 AM
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do you have the recirc panels removed?

there is a thread on blowers, IIRC with little progress noted
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post #175 of 186 (permalink) Old 07-14-2016, 03:20 PM
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Arrow We need a SuperCharger for our AC

Removing the footwell panels definitely helps. I thought the same thing so when I had the airbox out I looked at the blower motor. It does in-fact move a ton of air. I further sealed some potential air leaks, but it only helped slightly.

I agree that most of the air must be getting lost/blocked in the plumbing, but have never looked at all the plumbing to see if there would be any way to make it more free flowing.

I would be interested too if anyone else has looked at the plumbing route. I really am only interested in the AC vents. Maybe blocking off the lower or upper vents would push more air out the AC vents?

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post #176 of 186 (permalink) Old 07-14-2016, 06:56 PM
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Originally Posted by exigegus View Post
do you have the recirc panels removed?

there is a thread on blowers, IIRC with little progress noted
I've had it pried open from the top, shouldn't be impeding flow anymore.
Just hope there is a way to drive the blower at it's maximum or upgrade to a higher flow unit.

If the air flow increases, i believe this will also root out any evaporator icing issues some of us face.
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post #177 of 186 (permalink) Old 07-14-2016, 08:03 PM
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Pry it open from the top?

drill the rivets remove them

look at my thread re:
https://www.lotustalk.com/forums/f313...rework-348738/

I have no icing thus far.

the fan is not the problem, period

I recently messed with the diverter assembly and found no easy way to increase flow. In the linked thread I propped open the heater door, that helps

removing the diverter flaps that control vent vs defrost makes flow worse. Trying to make the corners radiused makes flow worse. I do not have enough knowledge to go any further.


My mods[built on the shoulders of others] make the ac work like a real car

fan just isn't the issue, leakage is the issue
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post #178 of 186 (permalink) Old 07-15-2016, 01:17 PM
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Just came across this thread and want to say thank you to everyone for posting all their findings! Did the recirculating panel on driver side by using a 1/4" bit, took the heads off the rivets but the bodies fell in, however there are no rattles and won't do any damage or anything so no reason to worry. AC blows much better! 5 minute mod was definitely worth it. Leaving the passenger side on. Thanks again
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post #179 of 186 (permalink) Old 07-06-2017, 04:36 AM
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I want to bump and just repeat that I cannot get to many of the links to look up and see a lot of the pictures
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post #180 of 186 (permalink) Old 07-06-2017, 05:00 AM
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Which links are not working?

There are several to the 'improved ac' page, at least some work, but htey are all trying to go to the same place, otherwise there are not many.

Look up also 'Tony Wa mod"
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