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Thread: New Cooling Fan for C7

  1. #1
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    Default New Cooling Fan for C7

    I lifted this from a dealer friend of mine on another forum:

    DESCRIPTION:
    Chevrolet Performance announces the launch of the 600 watt radiator fan for the Corvette base and Z51 to the Chevrolet Performance Parts Program.

    EFFECTIVE DATE:
    Available Immediately

    ADDITIONAL INFORMATION:
    Warranty Information -12/Unlimited miles on parts only. See the Chevrolet Performance catalog for full warranty details.
    Developed by Chevrolet Performance engineers, this performance 600 watt radiator fan was designed specifically to meet the Z06's track cooling requirements. The additional power, up from the base 500 watt system, raises the fan speed resulting in improved airflow and cooling.
    600 Watt Radiator Fan:
    Part Number: 23376530
    MSRP: $329.00
    IMPORTANT: Correct pricing will be implemented November 1, 2015.
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    2001 Dark Bowling Green Metallic Coupe - 6-spd and mods (400 rwhp)
    2005 Aqua Blur SSR - 6-spd & LS2(Donna's hotrod), bone stock for now

  2. #2
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    I don't think a more powerful fan will be enough to fix the c7z06 heating issues. Latest Motor Trend track test it was a DNF.

    http://www.corvetted.com/z06-finishe...excuses-video/

    2013 Zo6

    2004 Z06/Z16 Stock motor, very modified suspension

    1996 Black/gray LT4 Coupe (sold)

    2007 328i (traded), 2004 IS300, 1995 M3 (sold), Chevy & Ford & Lexus SUV's.

    '06,'09,'10,'11,'12,'13,'16,'17 SCCA Regional Solo Champion

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  3. #3
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    Quote Originally Posted by froggy47 View Post
    I don't think a more powerful fan will be enough to fix the c7z06 heating issues. Latest Motor Trend track test it was a DNF.

    http://www.corvetted.com/z06-finishe...excuses-video/


    That editorial is pretty damning.........
    20+ years ASE and Honda Master Tech

    1998 black 6 spd convertible

  4. #4
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    Yes, the editorial is pretty damning, but there area also folks that have tracked their Z's many times with no issues. Auto cars appear to be more sensitive than the manual cars. The dig about engine failures is also a little unfair. Yes, there have been some failures, but they represent a pretty low rate. No greater than Viper, Porsche, BMW, and other high performance motors.

    That being said, there are some things in the Z that need improvement, IMHO. First, I think a better radiator is in order. Second, the engine oil cooler needs to be relocated or a decent heat sheild put on it ( it is just too close to the cat). Third, the autos need additional oil cooling capacity. GM is actually working on a kit to do just that. Supposed to be available later this year...
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    2001 Dark Bowling Green Metallic Coupe - 6-spd and mods (400 rwhp)
    2005 Aqua Blur SSR - 6-spd & LS2(Donna's hotrod), bone stock for now

  5. #5
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    Quote Originally Posted by LLC5 View Post
    That editorial is pretty damning.........
    Well yes it was, he did not sugar coat anything, but it also seemed pretty "factual" right down to the GM rep's blaming "bad gas". I never heard of the web site until today, but it's a Brave New World, and corporate pr dudes and lawyers etc. are going to have a tougher time spinning the story when things go wrong.

    Least I can say is GM has the balls to "bring the car" unlike 2 or 3 others (super cars) who back out at the last minute.

    All GM needs to do to make me happy is FIX IT! Unfortunately, with the lousy response on the c6z heads I am not hoping for much.

    I do feel bad for the guys/gals who put their heart & soul into these new Vettes, but it seems like (I am not an expert of course) they traded off aero for cooling and this is the result.
    2013 Zo6

    2004 Z06/Z16 Stock motor, very modified suspension

    1996 Black/gray LT4 Coupe (sold)

    2007 328i (traded), 2004 IS300, 1995 M3 (sold), Chevy & Ford & Lexus SUV's.

    '06,'09,'10,'11,'12,'13,'16,'17 SCCA Regional Solo Champion

    Visit my DIY video channel for tips. Click below.

    http://www.youtube.com/user/1947froggy?feature=guide

  6. #6
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    Just pirated this off of corvette forum. Tadge responded to the question and here is his response:

    Tadge answered:
    The short answer to this question is, yes, we check our press cars before we send them out. However, you are probably looking for the full story and how to reconcile how a Z06, actually the exact same Z06, could do so well in Car and Driver's hands for the Lightning Lap and be such a disappointment weeks later in Motor Trend's Best Driver's car issue.

    First a little background: Corvettes are highly sought after test cars for media around the world. The number of requests we get to evaluate cars is well beyond our ability to accommodate them. We have to pick and choose and set priorities. The natural question might be: "You are the manufacturer. Why don't you just make more cars and have a bigger press fleet?" The truth is we have limited resources to manage such fleets and since we are capacity-constrained in production at Bowling Green, every car we put into the press fleet is a car we take away from a paying customer. That means people who have had orders placed for a long time have to wait even longer. We try to accommodate as many media requests as we can and that means there is enormous pressure to minimize the prep time for cars between media loans. Media deadlines are absolute, just like race start times, if you aren't ready when the green flag drops, you don't run. The goal for media prep is always the same: Make the car like-new for each loan. Sometimes this is easy, sometimes there is a lot of work to be done. Magazines and other media rightly expect the cars to be perfect, both mechanically and aesthetically. They usually use the same car for photography and track testing. It would be great to send two cars for every loan, so we would have a back-up, but then we would have to double the size of our fleet (see above). Bottom line is that the Car and Driver loan and Motor Trend loan were scheduled back to back. What could go wrong, right?

    A lot, as it turns out. During testing at C and D the car went off track into a tire wall. Stuff happens. It wasn't the first time this has happened and I'm certain it won't be the last. Fortunately, the damage to the car was cosmetic (rear fascia, supports and the energy absorption assembly). It didn't have any fundamental structural or chassis damage. The alignment was fine. Basically, zip ties and some duct tape was all it took to make it track-worthy. The car then went out and ran the second fastest Lightening Lap they have ever recorded.

    Any time there is an incident like that, we have to tear the car down, replace broken parts and make it like-new again. In the few days we had to prep the car for Motor Trend, we did a tremendous amount of work to make sure the car was safe, capable and pretty. In our haste, two things were missed. We always replace brake pads before delivering a car, but this was missed. I can’t remember this ever happening before, but it did. We have since changed our pre-test check procedure so this can never happen again. Although Motor Trend made it a point in the article, they did not notice any issue with braking performance during their spirited street drives. Our engineer on-site noticed the linings were worn, and they were immediately replaced and burnished. This was done the day before the Z06 was run on track by Randy Pobst and had absolutely no bearing on the results of the test.

    The second unfortunate occurrence related to the intercooler circuit. One of our pre-loan checks is to bleed the intercooler circuit to make sure there is no air in it. Some customer complaints about over heating Z06s have been traced to improperly bled intercoolers. The technician doing the work plugged in the electrical connector for the intercooler pump and it seemed to seat and "click" into position, but the secondary latching mechanism did not fully lock into position leading to intermittent operation. Without the pump running there is no coolant flow, no intake charge cooling and the engine pulls spark to protect itself. That is what Motor Trend experienced at random times during their testing. Unfortunately, the connector was seated enough that the pump and engine worked fine in all the pre-test driving done before trucking the car across the country to Motor Trend in California. Remember this is the same car that performed flawlessly a few weeks prior in sweltering heat during Car and Driver's Lightning Lap. The possibility of bad fuel was discussed because it was clear there was an abundant amount of spark retard, but we didn't discover the true root cause until the car had returned to the Milford Proving Grounds after the test. We have modified our procedure to run the pump remotely during the bleed process so this issue can be avoided in the future.

    Bottom line is that like any team we have good days and we have bad days. We showed well at Car and Driver Lightning Lap and stumbled at Motor Trend. We engineers and technicians on the team are even more disappointed than any in the Corvette community. We are reviewing our prep processes, which loans we prioritize and even the size of our media fleet. We will get better. We will live to fight another day. Motor Trend is planning another test at Laguna Seca in a few months with some very, very capable competitors. We intend to be ready.
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    2005 Aqua Blur SSR - 6-spd & LS2(Donna's hotrod), bone stock for now

  7. #7
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    Saw that.

    These tests by the MAJOR publications are really big deals, some mfg's even prep cheater cars to win these. Not like lending the car to some internet blog site (like IDrive - which is a pretty good one).

    No matter if it's a legit excuse, it's a major "put my foot in it all the way up to the hip" mistake.

    Not letting Tadge et al off easy for this one.

    Thanks for posting here

    2013 Zo6

    2004 Z06/Z16 Stock motor, very modified suspension

    1996 Black/gray LT4 Coupe (sold)

    2007 328i (traded), 2004 IS300, 1995 M3 (sold), Chevy & Ford & Lexus SUV's.

    '06,'09,'10,'11,'12,'13,'16,'17 SCCA Regional Solo Champion

    Visit my DIY video channel for tips. Click below.

    http://www.youtube.com/user/1947froggy?feature=guide

  8. #8
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    Quote Originally Posted by froggy47 View Post
    Saw that.

    These tests by the MAJOR publications are really big deals, some mfg's even prep cheater cars to win these. Not like lending the car to some internet blog site (like IDrive - which is a pretty good one).

    No matter if it's a legit excuse, it's a major "put my foot in it all the way up to the hip" mistake.

    Not letting Tadge et al off easy for this one.

    Thanks for posting here


    Yeah, I'm with you. Too much at stake to NOT be more thorough.
    20+ years ASE and Honda Master Tech

    1998 black 6 spd convertible

  9. #9
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    Quote Originally Posted by LLC5 View Post
    Yeah, I'm with you. Too much at stake to NOT be more thorough.
    You know I prep my car pretty thoroughly for a Sunday autox. Think what these big car companies have riding on those tests. Not a plastic autox trophy.

    2013 Zo6

    2004 Z06/Z16 Stock motor, very modified suspension

    1996 Black/gray LT4 Coupe (sold)

    2007 328i (traded), 2004 IS300, 1995 M3 (sold), Chevy & Ford & Lexus SUV's.

    '06,'09,'10,'11,'12,'13,'16,'17 SCCA Regional Solo Champion

    Visit my DIY video channel for tips. Click below.

    http://www.youtube.com/user/1947froggy?feature=guide

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