Chillers

[2013 ZL1 #7860]

Why couldn't you tune the AC compressor to stay on until 90% throttle and 5,500 rpm and allow it to keep cooling the chiller?

On a road course the car is not always at WOT and redline. Turning and stopping happens too.

I would be willing to bet that tuning the AC compressor to stay on at all times would bring better gain with the chiller than the 20-30 hp loss from having the compressor on.

Ice is not practical in a road race scenario. Why not do both a chiller and a HE and pump along with a large tank for storage?

[LIL QIK]

I've always kind of had doubts that the ac compressor could handle that kind of RPM's or would build up too much pressure in the system. But really doubt it or the clutch could handle the rpm's...

[2013 ZL1 #7860]

Originally Posted by LIL QIK

I've always kind of had doubts that the ac compressor could handle that kind of RPM's or would build up too much pressure in the system. But really doubt it or the clutch could handle the rpm's...

Makes sense but does that mean the compressor will last 10,000 miles or 1 track event? Who knows?

[cdjnight]

They turn it off because its not designed to handle the RPM. You run into over pressure problems and other issues related to AC systems that wouldn't be good. Definitely could add some RPM to the tune without hurting the AC system. But I would leave set to turn off at WOT. Not sure what rpm factory tune is set for? Anyone know?

[ZO6 Bryan]

A/C disables at 5000 rpm.

[2013 ZL1 #7860]

Originally Posted by ZO6 Bryan

A/C disables at 5000 rpm.

Good info!

http://www.hptuners.com/forum/showth...a/c%20settings

Do the issues with changing the compressor on/off parameters as talked about in the link above apply to the ZL1 and the E67 ecm?

[EvilZL1]

So can you run a chiller with a trunk tank, reservoir? Thinking about running these for my future plans with a cam, pulleys. Already have headers and CAI

[GenF-GTS]

Originally Posted by EvilZL1

So can you run a chiller with a trunk tank, reservoir? Thinking about running these for my future plans with a cam, pulleys. Already have headers and CAI

Was just thinking it anyone is worried about spinning the AC too fast you could probably change the wheel on it to be larger.

[Trackman]

Originally Posted by EvilZL1

So can you run a chiller with a trunk tank, reservoir? Thinking about running these for my future plans with a cam, pulleys. Already have headers and CAI

Yes.

[2NASSTY]

Originally Posted by jessrayo

You do not want to put spacers under the supercharger because the supercharger NEEDS to heatsoak back into the engine, there are no water jackets around the rotors and intake manifold. The water going through it is trying to cool air and the air is still getting over 200 AFTER it has been cooled by the water. That means rotor and metal temps are over 300 before the cooling brick.

Great info as always Jess, but this slice of info above has me nervous. I have the RDS phenolic spacers and they work great daily driving and at the drag strip. I have not road raced my ZL1 yet. Are you saying that the blower heat generated from long WOT pulls on a Track day session will be dissipated inside the blower instead of the engine with these plates? Then damage the blower internals.

Not good. Makes sense though. Looks like I won't be Road Racing my ZL1. DAMN

[jessrayo]

Originally Posted by Trackman

Yes.

Did you get your chiller hooked up since we last talked? How is it working for you?

[jessrayo]

Originally Posted by 2NASSTY

Great info as always Jess, but this slice of info above has me nervous. I have the RDS phenolic spacers and they work great daily driving and at the drag strip. I have not road raced my ZL1 yet. Are you saying that the blower heat generated from long WOT pulls on a Track day session will be dissipated inside the blower instead of the engine with these plates? Then damage the blower internals.

Not good. Makes sense though. Looks like I won't be Road Racing my ZL1. DAMN

I haven't actually tested the phenolitic spacers but I'm pretty sure road racing with them would show higher IATs. Because as I stated when the supercharger gets really hot on the normal car it actually raises the oil and water temps.

I have got my IATs so hot the car actually shut down, that was before I had any way to read the temp... CEL code showed it shut down for max IAT2. I've never had any damage to a blower. They seem to be able to take a lot of heat. If you have the spacers in there I would just watch IAT2 and if it gets much over 210 come into the pit. Use the dashlogic, get an aeroforce gauge or get a bluetooth sender and use the torque app or something similar.

A phenolitic spacer is an insulator, like I said in the post above, the vast majority of people are cruising around with the supercharger in bypass but when you road race or try to stand on it for a mile or so, the supercharger is the hottest thing in the engine bay and at those times you don't want to insulate the supercharger from the rest of the engine.

[misterhappy]

*newbie here*
Kind of getting the feel for the cars(going to look at one here soon).
Coming from the import world, and running BIG front mount intercoolers for out turbos, isn't this something that could be using here to avoid heatsoak ect.? I might be totally crazy but i know alot of guys coming from subarus that have top mount intercoolers(which it seems the ZL1's have) and change to the front mount for more power. I might be tottally wrong here as I have very little supercharger experience.

[jessrayo]

Originally Posted by misterhappy

*newbie here*
Kind of getting the feel for the cars(going to look at one here soon).
Coming from the import world, and running BIG front mount intercoolers for out turbos, isn't this something that could be using here to avoid heatsoak ect.? I might be totally crazy but i know alot of guys coming from subarus that have top mount intercoolers(which it seems the ZL1's have) and change to the front mount for more power. I might be tottally wrong here as I have very little supercharger experience.

That works fine with turbos because you are compressing the intake air with the exhaust and have to pump it up to the intake so why not run it through the grill on the way.... With the top mount supercharger the supercharger is basicially the intake manifold and the air is compressed right above the runners into the cylinders, makes no sense to pump it back out to the grill and then back to the engine. Water is a better cooling medium than air... mylftft's water cooling brick for his twin turbos is better than the big air to air units.. it basicially has a huge intercooler brick in the place of the supercharger, you just have to have a big enough air to water intercooler and with the limited space inside the superchargers sharing room with rotors, bearings, and bypass valves this gets pretty tough.