Has anyone tried this?
Has anyone tried this?
just came across this. Looks like it would be an easy way to bypass the IAC valve and save headaches of having to clean it. Also supposed to give a little tq bump.
Modification Number Six: Throttle Body Coolant Bypass
This one I saved for last, and for good reason. This is
perhaps one of the best modifications that you can do for
basically nothing. As you'll see in the dyno below, which
is of my Integra LS motor in a 92 Civic hatchback, before
and after: I got back almost 10ft-lbs of torque over
the entire rev range. 10ft-lbs that was present in the engine
when completely cool, but once at operating temperature was
no longer available. This is good for about 0.2 seconds in
the quarter mile in my particular vehicle - needless to say
I'm very pleased with this modification.
Above you see a diagram of how coolant normally flows
through a throttle body (illustration is from an Accord).
All you need to do on any vehicle is to take those two
coolant lines, disconnect them from the throttle body and
connect them with a coupler available in the vacuum hose
section of your auto parts store. It's basically two nipples
connected to each other that allow you to connect two pieces
of coolant hose.
If you have problems with erratic idle afterwards. You will
need to find your fast idle (or idle air control valve),
and disable it by blocking it off or somehow keeping it closed.
This occurs mostly in Hondas to my knowledge, and it's pretty
hard to explain in a "universal" manor.
Modification Number Six: Throttle Body Coolant Bypass
This one I saved for last, and for good reason. This is
perhaps one of the best modifications that you can do for
basically nothing. As you'll see in the dyno below, which
is of my Integra LS motor in a 92 Civic hatchback, before
and after: I got back almost 10ft-lbs of torque over
the entire rev range. 10ft-lbs that was present in the engine
when completely cool, but once at operating temperature was
no longer available. This is good for about 0.2 seconds in
the quarter mile in my particular vehicle - needless to say
I'm very pleased with this modification.
Above you see a diagram of how coolant normally flows
through a throttle body (illustration is from an Accord).
All you need to do on any vehicle is to take those two
coolant lines, disconnect them from the throttle body and
connect them with a coupler available in the vacuum hose
section of your auto parts store. It's basically two nipples
connected to each other that allow you to connect two pieces
of coolant hose.
If you have problems with erratic idle afterwards. You will
need to find your fast idle (or idle air control valve),
and disable it by blocking it off or somehow keeping it closed.
This occurs mostly in Hondas to my knowledge, and it's pretty
hard to explain in a "universal" manor.
just figured it'd be an easy alternative to cleaning the IAC. I just went and took a look at the IAC. From the instructions to disassemble and clean, it doesn't seem like something i'll be able to do in the dark or with a 1/2 hour time limit.
HOW would this be an alternative to cleaning the IACV? The IACV has nothing to do with the TB, or the coolant lines you are referring to. The IACV still works regardless of bypassing those coolant lines or not.
And there is no way you will gain 10 lb. tq by doing this
And there is no way you will gain 10 lb. tq by doing this
Maybe because if this route is taken, one could possibly disconnect the IAC without suffering ill effects. Haven't tried it, so not sure if it would work. And yeah, with the tq gains, 10 upon cool run. 0 present upon operating temp (stated in the paragraph). Wow, what an awesome deal. lol