electric fans with AC

[bt20v]

what fans are you guys running with AC at the moment I have a stock radiator and stock fan. Its just not moving enough air to cool the system well enough. what Electric fans are you running size placement and CFM...Also has anyone put a small 10 in pusher frt of the condenser to help with the cooling of the ac?

[bt20v]

bump

all you guys in Texas dont run AC??

[mooreofit]

i dont have a\c in any of my cars.but i'm ok with a\c. what makes you think its lack of airflow across the condesor?.

[bt20v]

All new ac parts...cleaned and flushed the lines. The pressure on the high side is a little high once you run water over the condensor or start moving it goes down quite a bit. i just want it cooler once im stopped in traffic. My buddy Mckenney ran 2 600 cfm 10" and they did not cut it. I was looking at 2 1000 cfm 10" but they are proform so reliability and accuracy is at question. I just weighing my options.

[bt20v]

I found some 10" 2500 cfm 7 amp draw fans from summit and went ahead and bit the bullet and ordered one I will let you guys know how it works out.

[coupesprinter]

I'm running 2 x 8.5" fans in Hawaii:


One of them is wired to the A/C, and the second is wired to the coolant temperature sensor.

Ideally, I wanted to wire them for a slower speed with the A/C on, and full speed with the coolant temperature activated.

[bt20v]

i like the lay out of that but im in texas and this week we are not getting below 100-102 with a high of 106 in the shade....My buddy used 2 600 cfm fans and they didnt cut it. so im going to run one on the key and the second is gonna run with the ac on...

[mbehrens]

really you can just use any pusher fan on the front of your a/c condensor as long as the shrod is the same size you a/c fan is really mostly on when your city driving and idleing... also if you dont use a fan clutch you can use a double stage fan ... low is for cooing system high is for a/c and thats a sucking fan ... look at pt cruisers and some saturns sl use that system ... bmw e30 and e36 use the fan clutch with a pusher fan in front or the condensor... like i said make sure the the shrod fits the condensor if yor using the pusher fan... no to know what works for you... go get some a.c gauges and connect them to you a.c valves ... with the pump runing your low side should be about 40 to 45 psi and your high side should be about 200 to 240 ... no when the pump is running the freon is heating up ... so then the fan should turn on then watch your gauges if your high side reading starts to climb then the fan is not pushing enough air to cool the system dont let it get over 250 but deffently dont let it get to 350 or the pressure releave valve will go off if equiped if not then pop goes a seal or a.c parts lol... hope this helps you ...

[bt20v]

really you can just use any pusher fan on the front of your a/c condensor as long as the shrod is the same size you a/c fan is really mostly on when your city driving and idleing... also if you dont use a fan clutch you can use a double stage fan ... low is for cooing system high is for a/c and thats a sucking fan ... look at pt cruisers and some saturns sl use that system ... bmw e30 and e36 use the fan clutch with a pusher fan in front or the condensor... like i said make sure the the shrod fits the condensor if yor using the pusher fan... no to know what works for you... go get some a.c gauges and connect them to you a.c valves ... with the pump runing your low side should be about 40 to 45 psi and your high side should be about 200 to 240 ... no when the pump is running the freon is heating up ... so then the fan should turn on then watch your gauges if your high side reading starts to climb then the fan is not pushing enough air to cool the system dont let it get over 250 but deffently dont let it get to 350 or the pressure releave valve will go off if equiped if not then pop goes a seal or a.c parts lol... hope this helps you ...

I def appreciate the insite...Its going to be hard to run a pusher as there in not a lot of room in the front with the support bar and the ac lines and oil cooler and lines. I have looked at quite a few fans and might be going with the ford focus svt fan as it looks like it will fit over the radiator nicely. i will post pics once i get moving along a little better.

since u seeem to know a little about a/c I have a question for you. As long as the heat/pressure is maintianed then you can put more then 80% of r134 in the lines hence making the system work better as there is more freon in the lines to cool?

I have converted a few 80's toyota trucks and they were so much colder then my current system. This has a new compressor, expansion valve, and dryer. The lines were flushed and vaccumed down.

[mbehrens]

well i do a/c work on the side ... lol...
but umm well you need to make sure you the vacume stays at 30hg of vacume... or you will have a air bubble... the big deal with air bubble is that air compresses and so you look like you have enough freon in the system and you really dont ... the way to tell is that your gauges will read theres enough freon and it should be blowing ice cold but its only getting a little cold... problems that would become from underline cause is blown o rings or a the pump will blow up lol... and send debree in the lines...

what i like to do is when i redue a a.c system ( clean lines replace all a.c parts ext. ) you need to vacume out the system for at least a 30 minutes .. i like to do a hour sometimes a little longer the more moisture and apsolutly no air means colder a.c.
also when i finish vacuming the system i dont like to just throw in freon i like to leave the gauges valve shut off and go do something else for like 30 min ... then come back open the low side valve and if the vacume pressure moved a little ( needle moves from say 30hg to 25 hg ) there is a leak some were that you need to find. i like to take a steath-a-scope and remove the end and use just the hose and you can hear the suction through it from seals and so forth.

also if you dont have enough oil in your compressor and to much freon the compressor heats up and also wont blow as cold...

by the way you said you put on a new compressor ... did you make sure to put the right amount and the right wieght of oil in .... example .. no compressor comes with the right amount of oil... so you need to get the specs on the fluid .. say 8oz and then drain what ever oil is in the pump into a cup it helps to turn the clutch to make sure you get all the oil you can ... then take some oil out of the cup or add some ... i have had some pump come with to much oil and some with really only 1oz... like i did a 06 ford focus saterday the pumpo had only 1/2oz but was supposed to have 8oz...

so this post should also answer your quistion in easier terms... you can have good low and high side pressure with the heat minimal but with out enough oil in the system you will not blow cold...
you need to have the right amount on both side...

P.S if you do what i do to check to make sure the a.c lines hold vacume dont leave the main line (yellow) hooked to the vacume pump i had one leaking on me and had a hell of a time trying to find a air leak somewhere on the car when it was just the vacume pump just cap of the main line ... thats what i do ...

I hope this answers your quistions and help you because i do like to ramble and lose my point... lol...

[bt20v]

I had a close friend/ase master tech do the work for me. I am starting to question if he acutally flushed the system...I will rent a vaccume machine and pull vaccume down on it and try it again...Thanks for all the insight its a big help