Throttle body
Thread Starter
Drifting
Joined: Jun 2004
Posts: 1,565
Likes: 5
From: Mechanicsville VA
St. Jude Donor '08
Throttle body
Need help with the TB. Was checking my son's 02 Z06 tonight for our track day, Friday. Saw a vacuum port on the bottom of the TB with nothing hooked to it. No hose anywhere. Don't recall ever seeing this. Came home and checked my Z06 (02) and it does not have this port.
Is anyone familiar with this? His car runs fine, but this will drive me bonkers till I find out what goes. Thanks,
Gene
Is anyone familiar with this? His car runs fine, but this will drive me bonkers till I find out what goes. Thanks,
Gene
Safety Car
Joined: May 2007
Posts: 4,812
Likes: 46
From: Taylorsville North Carolina
Are you referring to the fresh air hose that runs from valve cover to tb? If that is it, it should be plugged or at least connected. That is unmetered and unfilltered air going into intake.
PS Are you doing the ReZoom at VIR Friday? If so, look me up. I haven't seen you there in a while.
PS Are you doing the ReZoom at VIR Friday? If so, look me up. I haven't seen you there in a while.
Thread Starter
Drifting
Joined: Jun 2004
Posts: 1,565
Likes: 5
From: Mechanicsville VA
St. Jude Donor '08
Not sure . Did not see any loose hose anywhere. Will look at this tomorrow. Not sure why his car is different than mine. Both are 02 Z06.
We will be at VIR this Friday. Will look for you.
We will be at VIR this Friday. Will look for you.
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
Yes, it sounds like the throttle body bypass mod has been done in the vehicles past. It is very common and serves a couple minor functions. One is to keep the throttle cool by not having hot coolant run through it. The other is to allow the TB to be removed without having to mess with coolant.
Melting Slicks
Joined: Sep 2002
Posts: 3,311
Likes: 8
From: Plano Texas
St. Jude Donor '12-'13-'14-'15-'16-'17
Yes, it sounds like the throttle body bypass mod has been done in the vehicles past. It is very common and serves a couple minor functions. One is to keep the throttle cool by not having hot coolant run through it. The other is to allow the TB to be removed without having to mess with coolant.
Yes those are coolant lines to cool the TB.
Safety Car
Joined: Sep 2008
Posts: 4,753
Likes: 167
From: Youngsville North Carolina
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Thread Starter
Drifting
Joined: Jun 2004
Posts: 1,565
Likes: 5
From: Mechanicsville VA
St. Jude Donor '08
Talked to a vette mechanic today and his thoughts were that a bypass had been installed on the TB. Looks like some plumbing has been done judging from the hose clamps I saw. Did not look OEM.
With no port on my TB, it is likely that the previous owner installed a different TB. All appears to be well. Thanks for everyones help with this.
Gene
With no port on my TB, it is likely that the previous owner installed a different TB. All appears to be well. Thanks for everyones help with this.
Gene
Last edited by 71corv; Sep 19, 2012 at 09:55 PM.
Tech Contributor
Joined: Jan 2007
Posts: 19,360
Likes: 1,127
From: Dyer, IN
I guess it helps if one actually knows the intention of the design. Coolant flowing through the bottom of the TB, was intended to prevent icing during cold weather operation. Obviously, it was deleted on the LS2. Most guys don't drive their vettes in the winter, so they bypass it, with visions of big HP gains dancing in their heads.
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
Yep, how about it? I guess it helps if one actually knows the intention of the design. Coolant flowing through the bottom of the TB, was intended to prevent icing during cold weather operation. Obviously, it was deleted on the LS2. Most guys don't drive their vettes in the winter, so they bypass it, with visions of big HP gains dancing in their heads.
I guess it helps if one actually knows the intention of the design. Coolant flowing through the bottom of the TB, was intended to prevent icing during cold weather operation. Obviously, it was deleted on the LS2. Most guys don't drive their vettes in the winter, so they bypass it, with visions of big HP gains dancing in their heads. Was taught that the coolant running thru the TB was to warm it up in frezzing weather--- --Heat in not anyone's friend on electronics such as on the drive by wire TB's-- Not neccesarily the heat itself but the contnued cycling from HOT to COLD
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Yep, how about it? I guess it helps if one actually knows the intention of the design. Coolant flowing through the bottom of the TB, was intended to prevent icing during cold weather operation. Obviously, it was deleted on the LS2. Most guys don't drive their vettes in the winter, so they bypass it, with visions of big HP gains dancing in their heads.
I guess it helps if one actually knows the intention of the design. Coolant flowing through the bottom of the TB, was intended to prevent icing during cold weather operation. Obviously, it was deleted on the LS2. Most guys don't drive their vettes in the winter, so they bypass it, with visions of big HP gains dancing in their heads.
Safety Car
Joined: Sep 2008
Posts: 4,753
Likes: 167
From: Youngsville North Carolina