Coolant bypass...mod?

[BlkZoomZoom]

Just curious to see how many people have tried the "coolant bypass mod." on a MSP. Since I put my ported throttlebody on this week I decided to try it out. For those who arn't sure what I am talking about the throttlebody has a coolant passage through it to prevent ice formation during winter months or during cold conditions. I had a roomate that did it on an LT1 camaro, and I also know a couple of people that have done it on Spec-V Nissans.

The idea behind it is the coolant is a min. of 200*F (usually around 210-230*) by the time it gets to the throttlebody, which is hotter than the air going into the throttlebody. Thus heat from the coolant would get sucked into incoming air...

 

[mazpro]

I heard of it but never tried it. how is it done??

 

[BlkZoomZoom]

You disconnect the coolant lines going to the throttlebody and run them in a loop. Then plug off the lines on the throttlebody.

 

[mazpro]

do you have a picture of which lines to disconect?

 

[cosmo420]

Just curious to see how many people have tried the "coolant bypass mod." on a MSP. Since I put my ported throttlebody on this week I decided to try it out. For those who arn't sure what I am talking about the throttlebody has a coolant passage through it to prevent ice formation during winter months or during cold conditions. I had a roomate that did it on an LT1 camaro, and I also know a couple of people that have done it on Spec-V Nissans.

The idea behind it is the coolant is a min. of 200*F (usually around 210-230*) by the time it gets to the throttlebody, which is hotter than the air going into the throttlebody. Thus heat from the coolant would get sucked into incoming air...

you know what? i too had done this with my LT-1 and forgot all about the mod, let me ask you this how is the port job doing on your MSP, i have been thinking about it too before i shell out some $$$$ for a bigger throttle body

 

[505zoom]

Great idea man. Keep the old school stuff coming.

 

[Puckpimp71]

Did this on the SHO... First thing I ever did to it, too. Made a pretty significant difference on alleviating heatsoak. After an hour drive in rush hour, I could actually lift my hood and put my hand on the intake manifold and just hold it there. It was still a little warm, but not nearly as hot as before the bypass. I never really looked at the throttle body of the MSP, but I'm sure it's as easy to to do. Maybe I've got a new project for my next day off.

 

[Black Majik MSP]

Someone will have to explain this...it sounds like a good idea, but I have no idea what it really means.

 

[mazpro]

Did this on the SHO... First thing I ever did to it, too. Made a pretty significant difference on alleviating heatsoak. After an hour drive in rush hour, I could actually lift my hood and put my hand on the intake manifold and just hold it there. It was still a little warm, but not nearly as hot as before the bypass. I never really looked at the throttle body of the MSP, but I'm sure it's as easy to to do. Maybe I've got a new project for my next day off.

hey, if you do it, take some pics of the hoses you got to take off please (headbang)

 

[Glowmunkey]

Someone will have to explain this...it sounds like a good idea, but I have no idea what it really means.

Coolant is routed to the throttle body, where it's used to heat up the incoming air to aid in warm up during cold days. It's mostly for emissions and to get the car into closed loop ASAP. All you have to do is locate the two coolant lines that connect to the throttle body, take them off the throttle body, and connect them together... super simple and insanely cheap mod.

 

[BlkZoomZoom]

Here is a pic. of the throttlebody already installed ...you can see the bottom coolant hose connected to the metal tube I used to connect them. I can't tell you the performance difference since I put everything in at the same time, but I will tell you it feels pretty strong in the high rpm range.

 

[Black Majik MSP]

If someone could write a How-To, I'd definitely like to do this. DIY mods are always the most satisfying.

 

[BlkZoomZoom]

here is a basic how-to....

Disconnect intake pipe from throttlebody, Disconnect two coolant hoses located on left side of throttlebody (top and bottom), Get a 3" piece of 5/16" tubing (complete with already flared ends), Connect one coolant line taken off to one end of the tube and the other end to the other coolant tube(you should be able to use existing clamps if you bought the right size tube), No real need to block off the ends left on the throttlebody but you can if you want, Connect everything disconnected, Spray area off with hose or whatever you use to clean engine bay, start vehicle and check for leaks, top off coolant system.

 

[Puckpimp71]

That's pretty much all that's involved. If you get a good look at the TB it'll be a little more apparent that what we've talked about here. The only reason to not do this mod is basically if it's the dead of winter in Alaska and you're worried about the TB freezing shut.

 

[1FASTMSP]

i am going to do this soon, too hot here in houston...

 

[jersey_emt]

Hmmm interesting

 

[Stormtrooper77]

I did this mod with my old Summit. Very easy to do. But just a note of warning to people who have very cold winters (Canada mainly). You will lose some of your in-cabin heat. It just won't feel as warm.

 

[dj JINX]

thinking about thinking about this soundd useful here in NC where its hot and humid,

 

[ForceFed]

This is an old trick...I did this with all of my Fox body mustangs....Couldnt tell a huge difference, but any little bit will help.

Matt

 

[Protege_Speed]

Could you set up some bypass valve so that in the summer it would bypass the TB and in the winter just flip the valve to go throught the TB?