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Is the a big difference between reg iso thermal and copper iso thermal plenum spacers

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Old Nov 16, 2008 | 04:54 PM
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Default Is the a big difference between reg iso thermal and copper iso thermal plenum spacers

I'm gonna get a plenum spacer and thenismoshop.com has a sale with free shipping on them and the price isnt that big of a difference between the iso thermal and copper iso thermal spacers. Is there a big difference in performance as far as heat soak or not?
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Old Nov 17, 2008 | 03:16 AM
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I think the Iso Thermal is better at not heat soaking so badly. Get the iso thermo spacer
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Old Nov 17, 2008 | 04:25 AM
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Big. Very big.
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Old Nov 17, 2008 | 05:13 AM
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i was told there wasnt that big of difference, unless you live in a very hot climate
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Old Nov 17, 2008 | 05:16 AM
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well, im on long island ny, should i just go with the reg iso thermal then or the copper?
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Old Nov 17, 2008 | 06:38 AM
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well, i went with the basic 5/16" spacer, i think thats all you need
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Old Nov 17, 2008 | 07:01 AM
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the iso thermal helps with heat soak, but get the copper if it gets really cold in your area. So in NY, get the copper iso thermal
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Old Nov 17, 2008 | 07:57 AM
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I think you (and some others on here) are confused as to what the 'copper' and 'non copper' parts are.

the iso thermal spacer is the same for both kits. 'iso thermal' relates to the Aramid material the gasket is made of.

The 'copper' is actually a copper throttle body plate that has a coolant tube connected to the top of it. you then reroute the coolant from the plenum through this to keep intake temps down, while still getting the throttle body up to temp so it doesn't stick in cold weather.

the 'non-copper' uses a bypass valve that you splice into the coolant line to the upper plenum that you can open and shut to control the coolant flow. I wasn't aware they were still making this kit. They both will work, but the copper bypass is the better kit because you don't need to adjust it.

I know motordyne's website probably explains all of this, I would look there.

let me know if you have any questions.
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Old Nov 17, 2008 | 08:38 AM
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Originally Posted by Motormouth
I think you (and some others on here) are confused as to what the 'copper' and 'non copper' parts are.

the iso thermal spacer is the same for both kits. 'iso thermal' relates to the Aramid material the gasket is made of.

The 'copper' is actually a copper throttle body plate that has a coolant tube connected to the top of it. you then reroute the coolant from the plenum through this to keep intake temps down, while still getting the throttle body up to temp so it doesn't stick in cold weather.

the 'non-copper' uses a bypass valve that you splice into the coolant line to the upper plenum that you can open and shut to control the coolant flow. I wasn't aware they were still making this kit. They both will work, but the copper bypass is the better kit because you don't need to adjust it.

I know motordyne's website probably explains all of this, I would look there.

let me know if you have any questions.
thanks motor that helped me alot, im gettin the copper one
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Old Nov 17, 2008 | 09:34 AM
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that is the kit I have. super easy install and worth the extra few bucks. I don't like the idea of cutting my hose, if I ever need to take it all off for some reason.
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Old Nov 17, 2008 | 10:43 AM
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good response
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Old Nov 17, 2008 | 11:24 AM
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Originally Posted by 2004Black350z
good response
lol ari gold is the man

Last edited by Silver_Z33; Nov 17, 2008 at 11:27 AM.
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Old Nov 17, 2008 | 04:18 PM
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I would have chimed in here but Motormouth explained it to a T.
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Old Nov 17, 2008 | 07:25 PM
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yeah i didn't really explain that well lol, thanks motormouth. I also have the copper kit, definitely easy to install
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Old Nov 17, 2008 | 07:40 PM
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Getting a copper kit soon. Gotta love a New England winter
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Old Nov 18, 2008 | 05:44 AM
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Originally Posted by Hydrazine
I would have chimed in here but Motormouth explained it to a T.
what I want to understand is how I have a higher iTrader rating than you :P


Obama is already distributing **** around! lol
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