bub

A bit off topic, but when was the change from aluminum to carbon fiber on the 4 corner chassis brace bars (as shown in the video) made? My early '15 (VIN# 01515) is aluminum for these braces.

Mad Dog 24

I believe the CF is an option to purchase through GM not standard. My late build 2015 Z is aluminum also which I prefer.

urslooow

Has anyone tried to get this aux water cooler installed? if so how much for parts? labor? thx

urslooow

Aren't the cats left exposed b/c they need some airflow around them? My 2016z has the pipe leading to the cats heat wrapped from factory. thx

Mad Dog 24

Interesting, If you get the chance post a few pics I like to see the diff from the 15 to 16 Zs. With the DEI covers they have stand off brackets that allow air to pass thru.

Gomer

Sorry to ask, I did look but this thread is huge.

Anyone have the GM Part# for the secondary radiator?

I found what I think is the 600 watt fan, Part# 23376530 but what I am looking for is the secondary radiator that I think was announced at SEMA.

Thanks!

garychurch

The secondary radiator was announced at SEMA. There are pics on one of the threads with the part number.

The Z06 already has a 600 watt radiator fan and no fan is required for the secondary radiator which lies flat in from of the primary radiator.

Snorman

Here you go, Paul.
http://www.trunkmonkeyparts.com/corv...8/?parent=1163

GM part #84037858, MSRP is $895.
S.

Bravo Killo

This thread is ridicules! First 40 pages should be removed, I think everyone has their own opinion of Porsche vs Corvette, but that shouldn't be hashed out in a Tech Thread IMHO.


Some one that has been following this thread since at least page 42, should update and compile where we stand, IE; what we have found out so far that is causing the overheat (cooling capacity, lack of air flow, components mounted next to super hot exhaust components) and what is out there in the works for fixes (Dewitt radiator, LG aux radiator system, GM aux radiator, wrapping cats) and post updated results of what works.


Seems to me that a better/bigger cooling system is the avenue that everyone seem to be going down, has anyone installed the Dewitt radiator? is there any updated info for it?
BK.

energystar

you are absolutely right...maybe the forum could start a new post and name it as part of the original and state that the post have to be about the issue only.

0Tom@Dewitt

DeWitts

Bravo Killo

Sorry Tom, I stand corrected, Dewitt radiator....


any new input/Data?

Poor-sha

I tried to recap and start over once. It didn't go so well.

https://www.corvetteforum.com/forums...ng-issues.html

Bravo Killo

They should unstick this thread and sticky yours, at least yours stays on track with the issue, just needs to be updated.


Still no update on radiator swap? has anyone upgraded just the radiator and logged runs to compare data?

garychurch

I did two days at Sebring in the Z06 with the Z07 track package with ambient temps in the 90s.

I did have some problems related to an oil change overfill. Remember there are TWO drain plugs not one. Forget one and you have an oil ingestion problem that plagued me for a day and a half with a ambient pressure sensor fouled from oil in the intake. This problem caused the supercharger to shut down at higher RPMs. It was eventually fixed by a great Corvette Dealer, Alan Jay, in Sebring with no permanent damage. The Corvette mechanic I worked with, Dave, was incredible - kudos to Dave and Alan Jay!

I ended up with an afternoon running the A8 with the paddle shifters and doing laps with shift about 6,000 RPM with the air temps in the low 90s. The new DeWill radiator specifically for the Z06 A8 did a very commendable job - no overheating with temps no higher than 280 or so. I will pull the PDR and look at the data next week for the specifics. Unfortunately I did not hammer the car to max redline for multiple laps (i.e., six or more) so I really don't know how effective the DeWitt radiator will be. But I am certainly very encouraged, because until this event I would have believed I needed a supplemental oil cooler as well. Now I am not so sure.

I will be at VIR in mid-March and have another chance to put the Z06 through its paces. By the way for those that are interested it looks like a set of Cup 2s and a set of CCB brake pads (Pagid now has RSC1's available for a lot less than Corvette OEMs) are needed to take you comfortably through a couple of track days. That's $3,000 plus $500 in 98 to 100 LL fuel. Who said this was cheap?

Snorman

When was this, and was this the 2nd generation Dewitt radiator? Any idea of your pace?
I've always been of the opinion that a more robust radiator was all that was needed for high ambient temp (90+) use.
S.

garychurch

Yes, it is a new DeWitt design. You can contact John Dingman for additional information. Lap time at Sebring in the 2:20s this week.

Snorman

Thanks. I'm guessing you were there on Tuesday and or Wednesday with David Murry. Wish I could run with them but the schedule never seems to fit mine.
S.

peterjank

Yes, I updated to the Ron Davis radiator and reported results here:

https://www.corvetteforum.com/forums...-radiator.html

2cnd Chance

I don't know if someone else mentioned this or not, but during the Daytona 24 race the interview with Mark Reuss he mentioned Aero and twice Thermo as to what they're learning to bring back to the production Z06.