How to throttle body bypass ????
#1
Instructor
Thread Starter
Member Since: Feb 2001
Location: cameron mo
Posts: 132
Likes: 0
Received 0 Likes
on
0 Posts
How to throttle body bypass ????
Looking for ideas on how to do throttle body bypass
1. kit from ecklers --a piece of pipe
2. new hose run from radiator to T on driver side where
throttle body hose did connect
3. proper size bolt and hose clamp in
each hose at throttle body---
which would block flow of coolant
is it ok to block of this flow?
Thanks for your help
1. kit from ecklers --a piece of pipe
2. new hose run from radiator to T on driver side where
throttle body hose did connect
3. proper size bolt and hose clamp in
each hose at throttle body---
which would block flow of coolant
is it ok to block of this flow?
Thanks for your help
#2
Tech Contributor
Member Since: Dec 1999
Location: Anthony TX
Posts: 32,736
Received 2,180 Likes
on
1,583 Posts
CI 6,7,8,9,11 Vet
St. Jude Donor '08
BARBBED MALE to MALE brass fitting from Home Depot ($3.00) Two hose clamps AutoZone, $1.99 BAM,,,, your done
The hoses are Two different sizes. Dont let that bother you. Get a fitting that the small hose will expand over and the large hose will clamp on to. I installed the fitting where the hoses meat at the TB. DONE!
The hoses are Two different sizes. Dont let that bother you. Get a fitting that the small hose will expand over and the large hose will clamp on to. I installed the fitting where the hoses meat at the TB. DONE!
#3
Burning Brakes
I found a nylon (or whatever) hose slice at Advance Auto for less than a dollar and then reused the existing clamps. I only did the by-pass because I had to remove the throttle body and figured I'd do the by=pass now and not have to disconnect the coolant line if i ever remove the TB again.
The following users liked this post:
ArmchairArchitect (02-23-2020)
#6
Racer
The two hoses that get connected together to bypass the throttle body are originally connected to each side of the throttle body. Coolant flows in through one hose, around the throttle body, and back out the other hose on the other side. The reason that manufacturers do that is because when it's really cold out and the engine is stone cold it's possible for condensation inside the intake to freeze. In this case, the condensation inside the throttle body. If ice accumulates around/on the throttle body or butterfly while you are driving, then when you take your foot off of the gas the throttle body won't close all the way. That will cause all kinds of problems with idling, but the bigger problem is that with automatic transmission cars the engine will be racing at 'idle' causing the car to want to GO while you're standing on the brake at a red light trying to keep the car from rolling. The warm coolant keep ice from forming around the outside of the throttle body, preventing the butterfly from closing. It's really a system who's purpose is served the first several minutes of driving. After that heat soak from the engine will keep ice from forming on the TB.
This is standard practice on modern cars and a trick that has been around for quite a while - all three of my Taurus SHO's has their TB's bypassed. Since most Corvette owners don't drive their cars when it's cold enough for ice to form around the TB we just bypass them since HOT coolant running around the perimeter of it the rest of the time just heats the intake air that is passing by it. Cold air is denser and will produce more power than hot air, hence the reason people bypass the coolant lines.
Make sense? I don't think I misspoke, but if I did let me know. Still on my 1st cup of coffee!
This is standard practice on modern cars and a trick that has been around for quite a while - all three of my Taurus SHO's has their TB's bypassed. Since most Corvette owners don't drive their cars when it's cold enough for ice to form around the TB we just bypass them since HOT coolant running around the perimeter of it the rest of the time just heats the intake air that is passing by it. Cold air is denser and will produce more power than hot air, hence the reason people bypass the coolant lines.
Make sense? I don't think I misspoke, but if I did let me know. Still on my 1st cup of coffee!
The following 4 users liked this post by kmetros:
ArmchairArchitect (02-23-2020),
bigsapper (02-22-2020),
Energy CC (12-29-2020),
jjc508520 (02-15-2019)
The following users liked this post:
ArmchairArchitect (02-23-2020)
#8
Instructor
Thread Starter
Member Since: Feb 2001
Location: cameron mo
Posts: 132
Likes: 0
Received 0 Likes
on
0 Posts
One more question on tb bypass--
THANKS GUYS FOR HELPING WITH THIS
JUST ONE MORE QUESTION---
IS IT OK TO BLOCK OFF ALL COOLANT FLOW THRU
THROTTLE BODY PATH?
do not want any cooling problems for rest of engine
thanks
JUST ONE MORE QUESTION---
IS IT OK TO BLOCK OFF ALL COOLANT FLOW THRU
THROTTLE BODY PATH?
do not want any cooling problems for rest of engine
thanks
#9
Racer
I've never disrupted the flow of the coolant - I've just bypassed the TB. Bypassing it allows the coolant flow to continue as the engineers designed it to. That being said, I have no idea of where the coolant hoses come from or where it goes to on the other side of the TB, so maybe it really doesn't matter if you just plug them.
#10
Team Owner
Not worth any HP whatsoever. As previously stated, it does make for easy removal of the TB & intake for future mods.
And rather than using a piece of tubing to conect two hoses, you can just go buy one longer hose at the auto parts store. Less clamps, less places to leak.
And rather than using a piece of tubing to conect two hoses, you can just go buy one longer hose at the auto parts store. Less clamps, less places to leak.
#11
Tech Contributor
Member Since: Dec 1999
Location: Anthony TX
Posts: 32,736
Received 2,180 Likes
on
1,583 Posts
CI 6,7,8,9,11 Vet
St. Jude Donor '08
It was one of those things the GM decided to do to cover one EXTREME weather condition that may happen to someone some where some how. Ive only experienced TB Icing once in my life and that was on an old Small Block Chevy with a carb.
You will be fine with out it..
BC
The following users liked this post:
ArmchairArchitect (12-12-2018)
#13
Burning Brakes
The following users liked this post:
ArmchairArchitect (02-23-2020)
#15
Heel & Toe
C5 throttle body by-pass
not worth any hp whatsoever. As previously stated, it does make for easy removal of the tb & intake for future mods.
And rather than using a piece of tubing to conect two hoses, you can just go buy one longer hose at the auto parts store. Less clamps, less places to leak.
And rather than using a piece of tubing to conect two hoses, you can just go buy one longer hose at the auto parts store. Less clamps, less places to leak.
#17
Cruising
Kent
#18
Heel & Toe
[QUOTE=kentsimon;1598630414]it's 5/8" out of the block on my 85, I'm not sure what the other side is stock because my heater valve and the tee for the oil cooler have been replaced a few times already, the heater valve is 3/4" to the throttle body. just replaced all the hoses this last week, including the oil cooler hoses.TH
THANKS KEN, I APPRECIATE YOUR HELP MY FRIEND;
THANKS KEN, I APPRECIATE YOUR HELP MY FRIEND;
#20
Tech Contributor
Member Since: Dec 1999
Location: Anthony TX
Posts: 32,736
Received 2,180 Likes
on
1,583 Posts
CI 6,7,8,9,11 Vet
St. Jude Donor '08
A NOTE AND POSSIBLE WARNING!!!!!!!!!!! What ever you do,,,,,,,,,, DO NOT,,, use a PLASTIC BARBED FITTING to connect the hoses together. They are easy to SNAP and really not made for a heated pressurized coolant system.
Find a stainless or brass/bronze barbed fitting.. If you have a plastic barbed fitting, I STRONGLY recommend changing it out for a metal fitting.
This has been a public service announcement!
Bill
Find a stainless or brass/bronze barbed fitting.. If you have a plastic barbed fitting, I STRONGLY recommend changing it out for a metal fitting.
This has been a public service announcement!
Bill
The following 2 users liked this post by Bill Curlee:
ArmchairArchitect (02-23-2020),
Gene805 (02-12-2019)