Outer Limits 4x4 Board

Does a throttle body need coolant running threw it in SE Qlds climate? or is it just for cold areas to warm the unit?

I take it off in all performance applications, its there mainly for emmissions and to reduce light throttle response, the heated air is less dense and means the throttle progression at light throttle is smooth as less air is being put in at light throttle, at heavy throttle the water heating makes little difference to the intake air temps.
Joel

PGS 4WD wrote:I take it off in all performance applications, its there mainly for emmissions and to reduce light throttle response, the heated air is less dense and means the throttle progression at light throttle is smooth as less air is being put in at light throttle, at heavy throttle the water heating makes little difference to the intake air temps.
Joel

I love it when you get the people who tell you that all the ancilliary things fitted to motors these days are for emissions and that unplugging them will somehow unlock the beast within.

The cooling lines going to your throttle body are for the warm up period only. There is a port with a plunger moved my a bimetallic spring that lets a small amount of air bypass the throttle plate so you get a slightly higher idle whilst the engine is warming up. As the temperatre of the engine increases this port closes.

Unless the SEQ climate is around the 80-90 degree mark leave it conected or it will run like shit when its cold. Dont listen to people who have no idea what they are on about.

Gribble wrote:Dont listen to people who have no idea what they are on about.

This is the best advice............................................. SO.......................
ignore all of the above advice!
Firstly you need to tell us wether or not you are talking about about a throttle body heater or a waxstat.
The PGS post is relevant to a throttle body heater which by the heading is a fair presumption.
The Gribble post is relevant to a waxstat located on the throttlebody which as mentioned is a cold high idle device that you need. so it was a fair comment to bring it to your intention incase you're not aware these things exist.....
Now we can sort out which post is relevent to your query and thank the other person for the information they provided...




flaming not required.

Cheers Dan

II got two lines going in Il just hook both them up then

Yea, I assumed he meant a throttle body heater as used in Early Gen 3's (deleted with LS2 due to fly by wire technology)and 80 series 4.5 cruisers etc, there are plenty of vehicles like the GU 4.5 and 100 series 4.5 that use water heated wax pellet to cam a fast idle either by opening the throttle as in the GU or opening an air slide in the 100 series both of which are assited by a idle speed contol motor as well. My origional comments are correct for a throttle heater.
I think you'll find from my previous post I didn't say to remove it, I do but some increase in light throttle agressivness would be noticable, on the Gen 3 and V6 Holden the throttle also has a build up on one side of the blade to reduce air flow at small throttle openings so the vehicles dont lurch or be too agressive under light throttle, it may be the case in a 4wd under winch or rock crawling where light throttle accuracy is required there would be a benefit in keeping the warmed throttle heater.
Cheers Joel

Its also my understanding that a heated throttle body helps prevent the throttle icing up when driven for extended periods of time at a constant thottle in cold climates.

My previous ride was a twin turbo 300zx and when I rebuilt the heads I removed all the associated coolant lines that ran to the throttle body. (coolant leaks waiting to happen) They are not needed on a vehicle driven in australias climate, however, in japan i think its a good idea to have them.

300zx + cold climate (sub zero?) + constant throttle (cruising) @ fast speed = iced up throttle body = unable to back off throttle

Makes sense, didn't think of that also.

What an awesome motor the VG30DETT is, it's a pitty it's to reliant on electrical do-dads cos it would be an insane 4wd motor left stock but with 12lbs of boost it would run forever (untill you did a bog hole ).