Best plenum spacer??
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.
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.
Last edited by dofu; Apr 20, 2010 at 06:56 PM.
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
Gary
Then what's the point of having the copper plating in your throttle body? The whole point is to eliminate heat from the coolant on warmer days, but still have the coolant flowing through to heat up the throttle body on cold days. If you must be able to control it to know it's working, then you might as well use just the valve and save some money because you're not going to utilize the copper plating for anything anymore. Water carries more and transfers heat better for colder days anyways.
CCV Only: Pros - unheated TB and plenum in warm weather, heated TB in cold weather. Cons - heated plenum in cold weather.
Cu ISO Only: Pros - heated TB and unheated plenum in cold weather, unheated plenum in warm weather. Cons - heated TB in warm weather.
Combining them gets you all the Pros and none of the Cons, i.e. everything unheated in warm weather, and only the TB heated in cold weather. I'm not saying which setup is the best setup for the money, I'm merely describing the best setup, and that's to have both the CCV and the Copper ISO unit.
The point of having the copper plating between the TB and the plenum is so that the plenum stays cool in cooler weather, but the TB gets heated to keep the butterfly valve from freezing up.
CCV Only: Pros - unheated TB and plenum in warm weather, heated TB in cold weather. Cons - heated plenum in cold weather.
Cu ISO Only: Pros - heated TB and unheated plenum in cold weather, unheated plenum in warm weather. Cons - heated TB in warm weather.
Combining them gets you all the Pros and none of the Cons, i.e. everything unheated in warm weather, and only the TB heated in cold weather. I'm not saying which setup is the best setup for the money, I'm merely describing the best setup, and that's to have both the CCV and the Copper ISO unit.
CCV Only: Pros - unheated TB and plenum in warm weather, heated TB in cold weather. Cons - heated plenum in cold weather.
Cu ISO Only: Pros - heated TB and unheated plenum in cold weather, unheated plenum in warm weather. Cons - heated TB in warm weather.
Combining them gets you all the Pros and none of the Cons, i.e. everything unheated in warm weather, and only the TB heated in cold weather. I'm not saying which setup is the best setup for the money, I'm merely describing the best setup, and that's to have both the CCV and the Copper ISO unit.
I still don't see the point in having both... The coolant isn't bringing that much heat to the throttle body that we need to be so paranoid about the heat being transferred from the water to the copper to the throttle body, but you're going to shut that down when temps get warm anyways, and the aramid gasket is already keeping the plenum cool so there's already a very minimal amount of heat being transfered to the throttle body from there. Either way, keeping the throttle body that much cooler than the plenum isn't going to help lower air intake temps anyways. And keeping the coolant valves the way it is would keep the butterfly valve from freezing better than this would with a copper plate there, so why do you need the copper plate again?
The whole point of having the copper plate is so you can get the best of both worlds.
Last edited by dofu; Apr 21, 2010 at 01:40 AM.
Well, I can't say it any clearer. You asked what pros and cons ^^, and I've already clearly laid them out. If you don't understand them, then I can't help you. Having the copper plate is NOT the best of both worlds because in warm weather it continues to heat the TB while the CCV doesn't.
And I never said it was some earth-shattering difference in the amount of heat, I just said it's a better setup, and so far you haven't shown that I'm wrong. The best setup for warm weather is a CCV because nothing is heated. The best setup for cold weather is the Copper ISO because only the TB is heated. Combining them allows you to have the best setup for warm and cold weather.
And I'm not being paranoid, I'm just pointing out the facts. We'll just have to agree to disagree.
And I never said it was some earth-shattering difference in the amount of heat, I just said it's a better setup, and so far you haven't shown that I'm wrong. The best setup for warm weather is a CCV because nothing is heated. The best setup for cold weather is the Copper ISO because only the TB is heated. Combining them allows you to have the best setup for warm and cold weather.
And I'm not being paranoid, I'm just pointing out the facts. We'll just have to agree to disagree.
Yea, the 5/16 is like the best of both worlds, from what i gathered from my research a while back, the 5/16 is for more city driving, while the 1/2 is more for the track and freeway.
I installed the Skunk 2 phanolic plastic 1/2" spacer with silicone gaskets. I chose not to bypass the TB. I also installed a Mototdyne lower plenum at the same time. Seat of the pants dyno felt a real improvement in mid range torque.
Thread
Thread Starter
Forum
Replies
Last Post
thechitoguy
G35 Sedan V35 2003-06
12
Oct 1, 2015 05:25 PM
