What brand should I get (motordyne,Blox,etc)?

I have a automatic 06.

 

It's called the "search 2000 spacer"

 

too many threads on this

 

Search! Motordyne FTW

 

All you need for your 5AT '06 is MotorDynes 5/16" Spacer ISO, make sure you get the copper gasket since you live in a warm climate. It does a better job of separating the lower plenum from the heat of the engine block, well worth the extra $40.... 800-913-3130 ask for Tony @ Riverside Infiniti
Gary

 

5/16 motordyne

 

Everyone likes MD

 

Don't confuse the newb now...

 

I think you're referring to the Aramid gasket, which is not copper. The Copper upgrade has both the Aramid gasket, which goes between the lower plenum and the upper intake manifold, and the Copper TB unit, which goes between the throttle body and the upper plenum. It's the Aramid gasket that isolates the plenum from the engine block, not the Copper TB unit. In a warmer climate, you don't need the Copper TB unit, whose main purpose is to keep the throttle body warm in colder weather while allowing the upper plenum to stay cool. You need to keep the throttle body warm so ice doesn't form on the butterfly valve.

What you want is the ISO Thermal package, which has the spacer, the Aramid gasket, and a Coolant Control Valve (CCV) that allows you to shut off all heat going to the throttle body and upper plenum. It's designed for climates where temps stay above 45 or 50 degrees. You can always turn the flow back on if it ever gets colder than that, but in Tampa you're maybe talking about a few days a year at most.

Basic: Spacer only.
ISO Thermal: Spacer, Aramid gasket, and CCV. (my recommendation)
Copper ISO Thermal: Spacer, Aramid gasket, and Copper TB unit.

The best setup isn't actually available, and is a combination of the last 2. You have to order the CCV separately to get it. With that setup, the Copper TB unit keeps your throttle body warm in the winter while isolating the upper plenum, allowing it to stay cool. Adding the CCV allows you to run everything unheated during warm weather. You get the best of both options. I'm in the process of going this route with my setup.

 

^ That's kinda pointless... although copper has a high thermal conductivity**, it doesn't hold much heat, nor does it hold heat for too long. On hot days, the warm coolant shouldn't heat up the copper plating and throttle body more than the ambient temps already do. Copper and preferably silver is used in cooling systems for computers for those reasons... in case you missed it, they have high thermal conductivity, but they don't retain the heat.

** (don't mix that up with thermal conductance - the temps of the surface)

 

What's kinda pointless? I'm aware that copper has a fairly low thermal mass and high thermal conductivity, but that heat's gotta go somewhere, and where it goes is the throttle body. I'd say at best, your TB temp will be the same as ambient, but only when the ambient is already pretty high (which you agree with). At worst, your TB temp will be much higher than ambient, and that's not an optimal setup. There's pretty much no scenario with ambient temps above 50 where you're better off having a heated TB. In fact, with ambients between 50 and 85 or so, you're worse off having a heated TB, so why not put in a CCV? The only time a heated TB is better is when it's below 45-50 or above maybe 120, but then it's actually cooling the TB, and at 120, you've got bigger problems than what your intake temps are.

You may think it's pointless, but the combination I described is a better setup than either of the upgrade options they offer. Besides, we're talking about a CCV that costs maybe $7-$8 in parts to build yourself.

 

for the auto: MD 5/16... send Bryan@PrecisionZ a private message

 

I could have sworn that's what I said....isn't separating it from heat and allowing it to stay cool the same thing? I've had my CCV for 4 years in the off position, those of us that live in warm climates don't need the extra heat since our G35s love cool temps/air....
Gary

 

Motordyne offers readily available support and more intimate knowledge of our cars than most companies who manufacture similar spacers.

 

MD 5/16th iso copper