Throttle body bypass
Drifting
Joined: Sep 2017
Posts: 1,932
Likes: 677
From: Avon Lake OH
Even though mine is by-passed as well and I also did it on several other cars in the pass, they all hibernated over winter and it was never a concern with me personally. Now the engineers put it in there for a reason (of course for safety and liability) and I am sure that at some intake air charge combination of; flow rate, velocity, temperature, pressure and humidity you will encounter an icing condition. Now just how close to any of those combination of conditions would be seen during "normal" driving, I am not 100% sure. Just to error on the safe side of things, if you regularly drive your Corvette in cold, damp conditions, it maybe best to not by-pass the throttle body coolant loop.
Last edited by JHrinsin; Dec 21, 2017 at 02:35 PM.
Team Owner
Joined: Oct 1999
Posts: 31,976
Likes: 486
From: Guinness Its whats for B'fast JAWGA
CI 3-4-5-9 Veteran
Race Director
Joined: Apr 2007
Posts: 11,150
Likes: 889
From: South Western Ontario
GM doesn't use coolant to heat the throttle bodies on the C6 and newer (as well as other vehicles) and there is no other means to heat the air or heat the throttle body on a C6. So, that tells me it wasn't much of an issue. I'm actually not sure why the throttle body doesn't freeze on those cars but apparently it's OK.
I have driven my C5 below -5*C and had no issues with the bypass and a Vararam intake.
I have driven my C5 below -5*C and had no issues with the bypass and a Vararam intake.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette
Pouria Savadkouei
Drifting
Joined: Sep 2017
Posts: 1,932
Likes: 677
From: Avon Lake OH
GM doesn't use coolant to heat the throttle bodies on the C6 and newer (as well as other vehicles) and there is no other means to heat the air or heat the throttle body on a C6. So, that tells me it wasn't much of an issue. I'm actually not sure why the throttle body doesn't freeze on those cars but apparently it's OK.
I have driven my C5 below -5*C and had no issues with the bypass and a Vararam intake.
I have driven my C5 below -5*C and had no issues with the bypass and a Vararam intake.
Race Director
Joined: Apr 2007
Posts: 11,150
Likes: 889
From: South Western Ontario
The C6 is qualified for all weather operation. I'm also pretty sure other GM vehicles like their pickup trucks are expected to be driven in cold weather.
Melting Slicks
Joined: Jul 2015
Posts: 2,264
Likes: 222
From: Round Rock Texas
What is weird the size from the radiator to the manifold are two different sizes. I had to use a piece that was a size between the two.
Last edited by sirdano; Dec 25, 2017 at 06:30 AM.
Team Owner
Joined: Oct 1999
Posts: 31,976
Likes: 486
From: Guinness Its whats for B'fast JAWGA
CI 3-4-5-9 Veteran
The sizes are 1/4 and 5/16. You can buy a splice off Amazon, Jegs part 555-19545 or buy a kit. I would go with a brass splice.
Last edited by 93Polo; Dec 25, 2017 at 11:22 AM.
Team Owner
Joined: Oct 1999
Posts: 31,976
Likes: 486
From: Guinness Its whats for B'fast JAWGA
CI 3-4-5-9 Veteran
I believe it helped with cold weather idle and with drive by wire TBs and more advanced ECUs, it just isn't needed.