TB42e Throttlebody coolant bypass

[Jimbo]

I noticed that my TB42e has a coolant line running into the throttle body. Is it worth me bypassing it??? Maybe it would run a little cooler in summer?

Just a thought.

James

[mikesmith]

on gen 3's and 6ltrs we used to take this off! its to heat the throttle body for better warm up running. take it off and bypass it and the inlet temps will come down also!!.

[PGS 4WD]

There was a thread on this some time ago. The main purposes is to make the throttle less sensitive at light throttle by warming the air at low air speed, and to improve combustion and hence emissions at light throttle as warm air aids fuel vapourization at low air speed, it has little or no effect on peak power.

Joel

[DanGrey]

There was a thread on this some time ago. The main purposes is to make the throttle less sensitive at light throttle by warming the air at low air speed, and to improve combustion and hence emissions at light throttle as warm air aids fuel vapourization at low air speed, it has little or no effect on peak power.

Joel

Howdy fella, I know its a little bit old, I wanted to ask about the old thread you where saying.. I think I need more idea with this Coolant Bypass Line.. thanks! I'll greatly appreciate your replies..

[patrol_maverick]

I bypassed mine on my N16 Pulsar. It didn't make any differance. Just a complete waste of time.

[PGS 4WD]

There was a thread on this some time ago. The main purposes is to make the throttle less sensitive at light throttle by warming the air at low air speed, and to improve combustion and hence emissions at light throttle as warm air aids fuel vapourization at low air speed, it has little or no effect on peak power.

Joel

Howdy fella, I know its a little bit old, I wanted to ask about the old thread you where saying.. I think I need more idea with this Coolant Bypass Line.. thanks! I'll greatly appreciate your replies..

At low air speeds such as idle and part throttle where fuel atomization is important for emissions and in regards to a gen III where the throttle is quite large the heating of the air helps fuel atomization at low air speeds due to less turbulence. At high throttle openings where air speeds are high the coolant heating the throttle has little or no effect. It gets technical but also at idle for economy it helps if the air is less dense as this reduces vacuum as the butterfly will be more open, this in turn reduces pumping losses.