I tried to do some searching but couldnt find anything useful. Why do you need to get the copper motordyne plenum "if it snows in your area"? What other metal do they use? Does it really matter. Sorry if this is a repost.

thanks guys

 

You are probably confused but nothing that a visit to the Motordyne website wouldn't fix.

The spacer is not copper, there is a "heater plate" make of copper that goes between the neck of the plenum and the throttle body. The water lines connect to that copper plate rather than the normal connections on the neck of the plenum. That allows the plate to heat the throttle body and not the plenum - that helps to keep temperatures in the plenum down.

The throttle body needs to be heated, especially up north where it snows and you get low temps. If not, ice deposits can form on the throttle valve causing it to stick open/closed. MD recommends using the heater when temps are below 50ºF.

 

The purpose of the Copper throttle body heater is to reroute hot engine coolant comming out of the engine. The hot coolant is normally flowed into the plenum assembly to heat it up which in turn heats the throttle body that is bolted to it.

The Copper heater heats your throttlebody (like stock) but without heating the entire plenum assembly (like is done in the stock setup).

The regular Iso Thermal does the same thing but with a switchable valve.
If you use the regular Iso Thermal version with the Coolant Control Valve (CCV), keep the valve in the closed position during warm weather, but be sure to open the valve when it gets really cold outside.

The purpose of opening the CCV is to keep the throttle body heated so it won't get iced up or frozen to the open position. The throtle body getting frozen to the open position could cause lean stalling when you let off the gas.

So this is the reason for opening the CCV in cold weather.

In a place like So. Cal., Texas, Florida, Hawaii or similar, freezing is almost non-existant. So you can use the regular Iso Thermal kit. And in the rare occasion when it does get freezing cold, just open the valve.

But if you live in an area where it regularlly gets really cold... Colorado, Montana, Chicago, NY, Alaska, Canada, etc. Use the Copper Iso Thermal version.

The copper costs a little more, but it is completely automatic and fool proof. Install it and forget it. Your upper and lower plenum assembly run a lot cooler and your throttle body will never freeze up.

Both systems are complimented with the Aramid gasket.

 

i have a cooper, since i travel around alot.

 

 

Like a mini?

On a serious note. I have the MD spacer and love it. Best bang for the buck. Everyone talks about doing intake/exhaust first. I did a drop in filter, exhaust, and then spacer.

Great mod and motordyne is a great company.

 

I wish I had waited for MD before getting this AAM spacer. Mine didn't even come with hardware haha. MD seems like they have their **** together.

 

MD also gives a 15% military discount, can't beat that if you are in the military. I am about to order my 5/16" spacer either today or tomorrow.

 

Absolutely they have their **** together. Besides the performance gains, I am most impressed with the completeness of the kit. They supply exactly the quantities of hardware that you need, and each type of hardware is in a separate and labeled bag. If MD charges a premium for that (and I'm not sure that they do, since I never compared anyone else's kit pricing), it's completely worth it because it eliminates any head-scratching you would have to do during the installation, like "will the stock studs be long enough?" or "now that I have my car torn apart how do I get to the hardware store to buy the correct studs?" or "how on earth am I ever going to find studs at the local store that look just like the OEM ones but a little longer?"

I am also in the engineering field and based on my own work experience I can appreciate the thought and foreseight that goes into packaging such a complete kit.