For those with the Vmount and running AC... did you notice any difference? My car is JDM and factory denso R134a so it’s going to work with the kit no problem... more curious if you noticed your AC not cooling as well or better?

 

There's a Greddy V-Mount thread that had some helpful tips on A/C for LHD drivers on the latter part of the thread. I'm installing a V-Mount soon on my stock TT as well (as soon as IRP is able to get them to ship) and curious about how well the A/C functions with this as well.

Currently I think I have a A/C leak that needs to be assessed as it's blowing hot air right now tho

 

Correct, but there hasn’t been a discussion about its efficiency changing or not.

 

for me running 134a it seemed to work pretty good and I leave in fl..
I had temps as low as 45* coming out the vents, putting a small fan on condensor may help with stop and go situations.
​​the condensor needs air flow and with the big gap it has (the way greddy set it up for) its hard for stock fans to help cool.
I'm not using a fan but I made sure I tried to seal every gap possible

 

Adding an aux fan on the condenser helps, especially in hotter climates and when sitting in traffic.

 

@IRPerformance What is the typical mounting orientation for it? On top as a blower?

 

I place it on top of the condenser to help blow air down through it. There really isn't enough room between the radiator and condenser to place it underneath.

 

Do you wire it into the fans or it’s own switch?

 

Run a separate relay, using the Compressor Wire to trigger the coil...the aux fan will automatically turn on when the AC turns on...

 

Where is this located? Have you run it this way?

 

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​​​​​​It's a black wire coming out of the compressor. I wired a fan last summer but it didn't solve my problem, mainly because my fan size was insufficient, I couldn't fit a larger fan in that spot.

 

What size fan did you run? CFM?

Were you just drawing power from that wire and grounding the fan to chassis?

 

@IRPerformance what fan do you select and how do you prefer to wire it?

 

I used a SPAL 5.2" puller fan 342 CFM. I probably have to check the freon level on AC system. I ran a separate relay to get full power directly from battery...

 

With you Greddy VMIC, are your fans hooked up with fan extension? Mine appear to be pushing air up instead of sucking it down… what about yours?

going to get mine in the air soon to take the belly pan off and see wtf is going on.

 

I'm using a Greddy fan extension harness, your radiator fans are supposed to pull air down...

 

Yeah, the OEM fans are puller. Are you sure you are not just feeling the air flowing into the opening? When my fans are running I can feel air being suck into the bumper opening.

 

i don’t feel suction at the radiator. I feel the hot air being blown up into the bumper rather than being sucked down through the radiator.

Does your car have the belly pan on it still? Going to be checking the fans out tomorrow hopefully to see which way they are spinning. I don’t know why they’d spin the wrong way if they are since they are factory fans with just the Greddy fan extension.

 

Yup, I have the belly pan on.

 

I have a greddy v-mount, no additional fans on it, in very hot/humid climate(Okinawa, Japan) and I have no issues with it. But I did replace the compressor, condenser and receiver dryer with brand new parts because my olds ones were not in great shape. My FD has cooler A/C than my family car now haha

 

So I tested my fans… they spin clockwise.

I had pulled the pan down and viewed operation of the fans. They seem to be working as intended. With the pan off, I put a nitrile glove on the radiator to see if it would blow off. It did not. It appeared to be sucked into the radiator. I could feel the air being pulled down and into the pan.

I didn’t find any issues with any fan relays. They actually all look and feel very new.

It seems with my pan on that air is almost being backfed out of the radiator. However, it is still sucking hard. Beginning to think freon is the issue.

I cut the pan as directed in the instructions.






Any other ideas? My pressures on high side will spike to 300! Prior to the VMIC I had ice cold AC. My car is JDM 134a Denso.

 

I do not have a v-mount, but am curious from other owners, would removing the undertray with a v mount improve airflow/cooling?

 

It likely wouldn't.

I'm taking the car back into the AC shop this Friday to have the r134a levels checked. Speaking with @DaleClark we are both pretty convinced that my system may be overcharged. Fans are operating properly and I get suction through the condenser with fan operation. The compressor is working properly and all the other systems as well. I'll update after my Friday visit with my AC tech.

 

I don't have a part number but a spal or similar fan around 6-8" should be fine. I wired a separate relay and have it triggered by the ac relay so when the ac comes on the fan spins.

 

iirc, the pressures vary according to whether the system is mana or denso so have them check that too