throttle body heat up thing??

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00_slow_5spd_ls

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ok so my mechanic did my vc gaskets and coils today. he seen that i got the kkm filter, i told him it gets kinda hot, so what he did, im guessing these are some sort of coolant lines form the radiator or something thaty he up the throttle body, he discontected the lines and ran a bypass basioclly a little hose from where the intlet and outlet went. he said it will run cooler this way. now when im sitting at a red light, my fan dosnt go on. ill take pics tommorow morning. he said around oct to bring it back and he will connect it back for me.
 
I think that is more of a hotrod trick, mustangs..Trans Am...etc. I dont know how good an idea it is on the LS. I know this has been debated before here.
 
I did the same thing, and did not see much of a change.
 
Couple things to look at here. The LS has sensors all over that expect certain conditions and makes adjustments accordingly. Making mods like this throws these conditions out of the normal range. Its main function is to prevent icing due to the density and velocity of the air moving thru the throttle body in colder weather. Also the time the air spends in the actual "throttle body" isnt nearly enough to absorb much heat. But you have to look at it less as a power improvement but something that can keep conditions at more of an ideal range. Look at it this way...when you first start your car in the morning and take off down the road thats about as good as its gonna get as far as "ideal" conditions. After driving for 2-3 minutes do you notice any significant power decrease? Thats all you'd be preventing. But during temps lower than about 50-60o it can affect idle. Overall its not gonna blow your engine if you do it, but its also not going to increase much either.
 
I did this a few years ago... I've got a pdf how-to kicking around somewhere. I've never had any problems with it.
 
My question is did it actually do any good. I'm a mustang guy (from the pushrod days) and I don't ever remember bypassing the coolant at the throttle body actually doing anything at all.
There are other things that you could do if you have concerns about the Intake air temp because of the Intake tube and filter.
 
there isnt going to be any noticable improvments. Just dont forget to hook it back up before the cold weather gets here.
 
Did it to my SHO while ago. I live in MN, and have driven in -0 weather and never had any issues. Really all it does is keep the intake cooler longer, but that is really the point, less heat saturation = cooler/denser air.
 
Iremoved this on my SC project as well - if you look at the first couple of pages - I actually cutoff the coolant feed nipple from the block - in the lower coolant tree - and filled it with JB-Weld. In Texas - I have no worries of icing the TB.....
 
Maybe install a carb heat switch? :D

I couldn't help it, I've never heard of icing in the TB in cars, but in normally aspirated aircraft we have to worry about it. Most aircraft have a switch called 'carb heat' which closes the intake and forces the engine to use the hot air in the engine compartment. Of course the only way for you to know if it is working is when there's a drop in RPMs. From what I've read you can get carb icing anytime the temp is below 70F, and the dew point is close to the outside temp. You can read about it here:

http://en.wikipedia.org/wiki/Carburetor_icing

Anyways, not sure what any of this has to do with cars, but just found it funny to hear about icing in the TB.
 
Mac98SHO said:
Did it to my SHO while ago. I live in MN, and have driven in -0 weather and never had any issues. Really all it does is keep the intake cooler longer, but that is really the point, less heat saturation = cooler/denser air.
Click to expand...

Yeah, I've run the LS for three years this way with no problems druing winter.
 
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