A couple of Questions?!

[zexls]

- Has anyone taken the cooling lines off of the throttle to cool down the throttle body?
I had a '95 ford (5.0) that I did this to and it seamed to have better throttle response and the intake temperature was cooler.
- Has anyone w/ nitrous had their car dyno tuned ?? and if so, what jets are you using? -- and what are the power readings?

 

[Kelleyo]

- Has anyone taken the cooling lines off of the throttle to cool down the throttle body?
I had a '95 ford (5.0) that I did this to and it seamed to have better throttle response and the intake temperature was cooler.
- Has anyone w/ nitrous had their car dyno tuned ?? and if so, what jets are you using? -- and what are the power readings?

One of the LLSOC members has done it. Not really taking off the lines but bypassing the throttle body. He also did it to his SHO (this was a popular SHO mod). Not sure if it had a big effect.

 

[Fla02LS]

This falls as one of those things that you have to ask why the lincoln engineers did it that way ? If it made sense to allow a cooler intake temp by bypassing the throttle then why wasnt it engineered that way, this isnt a mustang or taurus but a lincoln. The benefit is unknown if any and a possible negative affect wouldnt be worth a couple extra hp anyway.

 

[Quik LS]

Yes - I run with the cooling lines off the TB. It is a pain to remove them - one line come from under the intake in a brass nipple out of the block. I cut the nipple off flush and filled it with JB Weld so there would not be any leaks.

Do a search on the nitrous. I ran a NX #20922 for about a year - this was long before the SCT XCal was on the market - so we could not re-flach the PCM and therefore could not tune the car - dangerous indeed...

I usually ran a 75 shot - did a couple of runs with a 100 shot 13.9350 @ 109.04 (Using street tires and spun very bad).

 

[mharrison]

The "coolant" lines going through the throttle body are to warm the air going into the engine, not cool it. The coolant will reaches around 200 degrees once the car is warmed up, and transmits that heat through the housing of the throttle body like a heater. This heat is there to prevent the throttle body from icing as air expands and contracts around it, which is rare but possible in colder climates. However, for the other three seasons, warm air is less dense than cool air, and therefore contains less oxygen available to burn. Less burnable air results in less power. But, you can get the power back! Do the bypass!

The coolant in the throttle body isn't needed if you are in a temperate climate. Here in Mississippi it isn't a problem at all. If you're in Anchorage, you may want to leave it alone!

 

[2001LS8Sport]

This heat is there to prevent the throttle body from icing as air expands and contracts around it, The coolant in the throttle body isn't needed if you are in a temperate climate. Here in Mississippi it isn't a problem at all. If you're in Anchorage, you may want to leave it alone!

That is EXACTLY why it's there. And you don't have to live in Alaska to suffer from an iced throttlebody. Because of the venturi effect you can get, it is totally possible to ice a throttle body in temps well above freezing. As a matter of fact, you are more prone to see that in Mississippi than say Idaho on a 45 degree day due to the humidity. Have you ever pulled the valve core out of an inflated tire on a 90 degree humid day and seen frost develop around the stem? It's the rapid expansion of the air that does that. Military fighter jets use that same principle to "air condition" the cockpits.

The air doesn't see the throttlebody long enough on the way to the engine to have any noticable difference in inlet temp. I wouldn't waste my time.

 

[GWL]

That is EXACTLY why it's there. And you don't have to live in Alaska to suffer from an iced throttlebody. Because of the venturi effect you can get, it is totally possible to ice a throttle body in temps well above freezing. As a matter of fact, you are more prone to see that in Mississippi than say Idaho on a 45 degree day due to the humidity. Have you ever pulled the valve core out of an inflated tire on a 90 degree humid day and seen frost develop around the stem? It's the rapid expansion of the air that does that. Military fighter jets use that same principle to "air condition" the cockpits.

The air doesn't see the throttlebody long enough on the way to the engine to have any noticable difference in inlet temp. I wouldn't waste my time.

Agree!!!

 

[Fla02LS]

That is EXACTLY why it's there. And you don't have to live in Alaska to suffer from an iced throttlebody. Because of the venturi effect you can get, it is totally possible to ice a throttle body in temps well above freezing. As a matter of fact, you are more prone to see that in Mississippi than say Idaho on a 45 degree day due to the humidity. Have you ever pulled the valve core out of an inflated tire on a 90 degree humid day and seen frost develop around the stem? It's the rapid expansion of the air that does that. Military fighter jets use that same principle to "air condition" the cockpits.

The air doesn't see the throttlebody long enough on the way to the engine to have any noticable difference in inlet temp. I wouldn't waste my time.

Well said. Once again, this LS engine isnt one to be tampered with the same way a mustang or sho motor could be or about 99% of engines. I am going to make a assumption that nobody here is taking their LS to a drag strip for competition purposes. So all this nit picking about doing this or that to gain anything is pointless. You could gain a better 0-60 by removing your interior than any of these engine mods. So unless your a professional trying to gain every 10th of a second to win then just enjoy your LS.

 

[SilverLS]

Ive got a Dyno Day coming up the first week of december I am trying to get a xcal before than so I can play around with the wideband......I hope it turns out to be a productive day But I have to get ahold of the XCAL....

 

[SilverLS]

Opps I guess I meant play around with the timing and fuel jets with a wideband...

 

[2001LS8Sport]

Let us know how that goes Silver. It will be interesting to see what kind of results you get. But a dyno day may not be the place to experiment. All those I've seen maybe give you two pulls. They don't have time to do any playing around. Maybe you can set up a day where they can spend some time (and your money!) playing with the software.

 

[SilverLS]

Yeah this one isnt going to be too bad I have 5 pulls for 50$ and then Im back in line.....There is going to be about 5-6 cars there so I shoulf be able to get some more in.....I also am waiting for a buddy to get his dyno back up that broke some stuff with there new TWIN TURBO VIPER WITH 325 Shot of N20 and propane and tons of other they put down over 1100hp and way more tourque and something is wrong with it but when they get that they will help me out too......Just got to get the software first.......