coolant bypass question
#1
Supreme Member
Thread Starter
Join Date: Sep 2003
Location: Readington, NJ
Posts: 1,232
Likes: 0
Received 0 Likes
on
0 Posts
Car: 88 GTA
Engine: 350 TPI
Transmission: T-56
Axle/Gears: 9 bolt w/ 3.73
coolant bypass question
I'm thinking about bypassing the coolant to the TB, but I have a question I want to ask first: does anyone that drives their car up north in the winter get any icing? That was GM’s logic behind making the throttle body warm - to prevent icing that would potentially make the throttle stick.
Unfortunately, it's a daily driver so it will see another winter use this season. Fortunately, I just fixed all my rust spots (2 1” holes in front wheel well and 1 in the rear – both on the drivers side) and will be stripping/por 15ing the entire underbody/wheel wells shortly.
Unfortunately, it's a daily driver so it will see another winter use this season. Fortunately, I just fixed all my rust spots (2 1” holes in front wheel well and 1 in the rear – both on the drivers side) and will be stripping/por 15ing the entire underbody/wheel wells shortly.
#2
Supreme Member
Join Date: Feb 2005
Location: Ajax, ON
Posts: 1,054
Likes: 0
Received 1 Like
on
1 Post
Car: 85Z28 87GTA 91GTA 98SS
Engine: SBC, LS-x
Transmission: T-5, 700-R4, T-56
I'd leave it if you drive in the winter. Mine is connected and stuck about 2 years ago when the car was just started. Scared the hell out of me. Road had a fresh coat of freezing rain. Could barely walk without breaking your neck.
#3
#4
Supreme Member
Join Date: Aug 2004
Posts: 1,327
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1987 IROC-Z Camaro
Engine: 5.7 350 TPI - SLP Runners, AFPR, MSD Goodies
Transmission: 700R4 - Shift Kit, Corvette Servo
Axle/Gears: BW 9 bolt, 3.27s
It's not worth the minimal horsepower gain. If it came from the factory with it like that then there is a reason to leave it like that.
#6
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
iTrader: (1)
Join Date: Jun 2003
Location: Elgin, IL
Posts: 3,085
Likes: 0
Received 2 Likes
on
2 Posts
Car: 1997 Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73 IRS
I bypassed mine when I first flushed the coolant in the car. I drove it in the winter without a problem at all...even when it was cold enough to turn my coolant into slush (yeah...that's what I get for not having a high enough concentration of antifreeze for a while....fixed that BEFORE it got cold this year). Never had a problem. Granted, we don't see the kind of weather in Chicago that the northeast does, so it'd be different if I lived over there. I don't even have heat in my car anymore after my engine swap this past summer. Needless to say, the car gets to sit during the winter months this year.
#7
Member
Join Date: Apr 2005
Location: Long Island NY
Posts: 447
Likes: 0
Received 0 Likes
on
0 Posts
Car: Hers: 88 Formula 350
Engine: TPI
Transmission: Auto
Axle/Gears: 10 bolt Posi
why not leave it for the winter then disconnect for the summer?
side note:
I've ran carbs without chokes and blocked off heat riser ports and have never had a problem (Long Island, so it does get nippy here)
only thing i've had to do was play with the timing a little
i guess it could also depend on what T stat you are using.
if you are using a 180 i'd leave it, then think about it in the spring.
side note:
I've ran carbs without chokes and blocked off heat riser ports and have never had a problem (Long Island, so it does get nippy here)
only thing i've had to do was play with the timing a little
i guess it could also depend on what T stat you are using.
if you are using a 180 i'd leave it, then think about it in the spring.
Trending Topics
#8
Senior Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
iTrader: (1)
Join Date: Jan 2003
Location: New Germany, MN
Posts: 949
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 Iroc
Engine: 5.3
Transmission: 4L80E
Axle/Gears: 9 Inch w/ 3.55
Ok how does it keep your tb from freezing up. The coldest it will ever be is on start up. And how cold it the coolant? As cold as everything else on the car. The reason it is there so it heats the air up going in for emissions. Cause that way the cylinders burn hotter. This is better for burning all the gas.
#9
Supreme Member
Thread Starter
Join Date: Sep 2003
Location: Readington, NJ
Posts: 1,232
Likes: 0
Received 0 Likes
on
0 Posts
Car: 88 GTA
Engine: 350 TPI
Transmission: T-56
Axle/Gears: 9 bolt w/ 3.73
Originally posted by grover85
Ok how does it keep your tb from freezing up. The coldest it will ever be is on start up. And how cold it the coolant? As cold as everything else on the car. The reason it is there so it heats the air up going in for emissions. Cause that way the cylinders burn hotter. This is better for burning all the gas.
Ok how does it keep your tb from freezing up. The coldest it will ever be is on start up. And how cold it the coolant? As cold as everything else on the car. The reason it is there so it heats the air up going in for emissions. Cause that way the cylinders burn hotter. This is better for burning all the gas.
I’m defiantly not arguing that the heated tb is also more emission friendly and that emissions didn’t play a role in GM’s decision. I just want to make sure that my car will remain as safe as it can be while I drive it in the upcoming months.
#10
Senior Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
iTrader: (1)
Join Date: Jan 2003
Location: New Germany, MN
Posts: 949
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 Iroc
Engine: 5.3
Transmission: 4L80E
Axle/Gears: 9 Inch w/ 3.55
I understand your thoughts on this. I personally haven't had a problem with this. I have driven my car in cold months to and from storage and didnt have a problem. I would deem this a safe modification.
#11
Supreme Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
iTrader: (1)
Join Date: Mar 2000
Location: Corona
Posts: 1,692
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Form, 91 Z28, 89 GTA, 86 Z28
Engine: BP383 vortech, BP383, 5.7 TPI, LG4
Transmission: 4L60e, 700R4, 700R4..
Axle/Gears: 3.27, 2.73
The problem isn't in the REALLY cold, it's when it's 32-40 degF. Then there's still some water in the air, and when it goes through the throttle, the expansion at the smallest points drops the temp and freezes the water. The temp recovers on the other side of the throttle -for all you ME's out there that will say there's no temp drop across a throttle by definition, hehe (I'm an ME too - and an EFI engineer).
Thread
Thread Starter
Forum
Replies
Last Post