Plenum spacer fit with stock strut bar?
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From: Middletown Delaware
Plenum spacer fit with stock strut bar?
Hi i have a 05 350z and i just bought the intake and throttle body spacer, so i'm looking at some minor intake work. I'm interested in buying a 5/16" plenum spacer. Ive read on certain brands on their website and they say it will fit with the front strut bar in place and on other websites ive read that it doesnt, and you have to keep the front strut bar off. Does any one have the spacer in place with the stock strut bar. I just wanna know that it fits before i order it. i do wanna keep my stock strut bar in place. thanks
Motordyne 5/16" Basic Plenum spacer
This stealth modification adds 10HP-13HP and is the simplest to install. The 5/16" plenum spacer is fully compatible with all stock and aftermarket strut bars. The engine cover easily fits and never needs to be cut. With the engine cover and strut bar in place the engine bay looks completely stock.
This stealth modification adds 10HP-13HP and is the simplest to install. The 5/16" plenum spacer is fully compatible with all stock and aftermarket strut bars. The engine cover easily fits and never needs to be cut. With the engine cover and strut bar in place the engine bay looks completely stock.
Last edited by davidv; Apr 9, 2008 at 03:02 PM.
Originally Posted by davidv
5/16" Basic Plenum spacer
This stealth modification adds 10HP-13HP and is the simplest to install. The 5/16" plenum spacer is fully compatible with all stock and aftermarket strut bars. The engine cover easily fits and never needs to be cut. With the engine cover and strut bar in place the engine bay looks completely stock.
This stealth modification adds 10HP-13HP and is the simplest to install. The 5/16" plenum spacer is fully compatible with all stock and aftermarket strut bars. The engine cover easily fits and never needs to be cut. With the engine cover and strut bar in place the engine bay looks completely stock.
...which spacer are you considering, MD?
Si, it works!
Originally Posted by Mxriderd18
i was looking at getting the Motordyne 5/16" Iso Thermal Plenum Spacer . Is there any fitment problems with the stock strut bar with this plenum spaer?
http://www.motordyneengineering.com/350Z.htm
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Hey guys,
I'm considering getting the MD 5/16" Thermal, however, I wanted to know one thing. Is it recommended to get the ECU reflashed? I've heard people go both ways in my searching. Some say install it and just reset the ECU yourself and it should adjust itself.
Didn't want to create a new thread b/c I know I'll be told to Search haha. Just wanted some opinions... thanks guys!
I'm considering getting the MD 5/16" Thermal, however, I wanted to know one thing. Is it recommended to get the ECU reflashed? I've heard people go both ways in my searching. Some say install it and just reset the ECU yourself and it should adjust itself.
Didn't want to create a new thread b/c I know I'll be told to Search haha. Just wanted some opinions... thanks guys!
Originally Posted by JonnyC
Definitely no need to get an ECU flash. Just reset the ECU and you're good to go.
One more question that I can't find throughout a number of posts. The Thermal Spacer kit from MD comes with a CCV (Coolant Control Valve) that they claim you should adjust throughout different temperatures (+/- 55*F). Now, is this something that is required or recommended? I live in the NorthEast (PA) and temperatures are consistently different.
Would it be advisable to just go with the Basic Spacer kit they offer?
Originally Posted by rotchcrocket04
Is it recommended to get the ECU reflashed?
If you had a intake, spacer, headers, test pipes and exhaust, yes, I would recommend it.
Otherwise "most" people can do an intake, spacer, test pipes and exhaust without requiring a tune. Each car varies on how it reacts to mods.
Originally Posted by rotchcrocket04
Cool, thats good to hear.
One more question that I can't find throughout a number of posts. The Thermal Spacer kit from MD comes with a CCV (Coolant Control Valve) that they claim you should adjust throughout different temperatures (+/- 55*F). Now, is this something that is required or recommended? I live in the NorthEast (PA) and temperatures are consistently different.
Would it be advisable to just go with the Basic Spacer kit they offer?
One more question that I can't find throughout a number of posts. The Thermal Spacer kit from MD comes with a CCV (Coolant Control Valve) that they claim you should adjust throughout different temperatures (+/- 55*F). Now, is this something that is required or recommended? I live in the NorthEast (PA) and temperatures are consistently different.
Would it be advisable to just go with the Basic Spacer kit they offer?
I posted it earlier over on G35 driver. Some poeple over there had the same question.
http://g35driver.com/forums/showthread.php?t=213401
The Copper throtle body heater is need when it gets really cold outside.
Its needed for the same reason Nissan/Infiniti heats the throttle body. The purpose of heating the throttlebody is to prevent ice formation inside the throttle body or on the butterfly valve.
If the butterfly valve is iced up while driving, it can cause a potentially dangerous situation. If, for example, you are driving on the freeway in cruise control on a snowy day, if the throttlebody is not heated it could get iced up.
When you tap the brakes to let off the cruise control the ecu will disengage the cruise control, stop flowing fuel to the engine and close the throttlebody.
But if the throttle body is iced up and stuck in the open position, the ecu will still stop flow of fuel to the engine. This will lean out the engine and cause it to stall. This obviously is never a good situation while driving and this is why Nissan keeps it heated. Its for safety reasons.
What the Copper does is re-route the hot coolant flow from the plenum and directs the heat only to the throttle body. What Nissan does is heat the entire aluminum plenum which in turn keeps the TB hot.
But its not necessary to heat the whole plenum to keep the TB heated. They could have just heated the TB in the same manner as the Copper TB heater does.... but that would have cost more.
The Copper TB heater gets hot on bare copper side where the TB bolts to it. And it stays cool on the insulated side where it bolts up to the plenum.
Note: With the new HR and VHR engines Nissan/Infiniti is now using the same concept as the Copper Iso Thermal. A plastic plenum assembly for total thermal isolation and hot engine coolant flowed directly to the TB to keep it heated.
----------------------------
PS
I often get the question as to why the Coolant Control Valve should be switched on below 50'F (which is well above freezing).
Joule Thompson cooling effect... Otherwise known as adiabatic expansion.
As the air flows past a partially closed throttle body it undergoes a rapid expansion and decrease in pressure. For the same reason a refrigerator pump cools your refrigerator down, the same effect is happening inside your plenum.
On a cool 40'F day, the air flowing past the TB cools down significantly below ambient temperature. In fact, immediatly behind the TB the plenum goose neck gets much colder than the incomming air and actually goes below freezing.
If the air is humid, the water vapor will freezout and stick behind the throttle plate.
50'F gives enough thermal margin to prevent ice formation on the throttle body plate.
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<!-- / message --><!-- sig --><!-- / message --><!-- sig -->
welcome. First read this :https://my350z.com/forum/2003-2009-nissan-350z/197329-the-top-100-common-questions.html
When you started this thread did you see this? :
Be Sure to use the Search feature first, as the topic may have been posted already.
it just takes 5 minutes to seach for an answer as easy as the one you have posted. thanks.
When you started this thread did you see this? :
Be Sure to use the Search feature first, as the topic may have been posted already.
it just takes 5 minutes to seach for an answer as easy as the one you have posted. thanks.
Originally Posted by Hydrazine
Here is a semi quick description of the Copper Iso Thermal and the CCV.
I posted it earlier over on G35 driver. Some poeple over there had the same question.
http://g35driver.com/forums/showthread.php?t=213401
The Copper throtle body heater is need when it gets really cold outside.
Its needed for the same reason Nissan/Infiniti heats the throttle body. The purpose of heating the throttlebody is to prevent ice formation inside the throttle body or on the butterfly valve.
If the butterfly valve is iced up while driving, it can cause a potentially dangerous situation. If, for example, you are driving on the freeway in cruise control on a snowy day, if the throttlebody is not heated it could get iced up.
When you tap the brakes to let off the cruise control the ecu will disengage the cruise control, stop flowing fuel to the engine and close the throttlebody.
But if the throttle body is iced up and stuck in the open position, the ecu will still stop flow of fuel to the engine. This will lean out the engine and cause it to stall. This obviously is never a good situation while driving and this is why Nissan keeps it heated. Its for safety reasons.
What the Copper does is re-route the hot coolant flow from the plenum and directs the heat only to the throttle body. What Nissan does is heat the entire aluminum plenum which in turn keeps the TB hot.
But its not necessary to heat the whole plenum to keep the TB heated. They could have just heated the TB in the same manner as the Copper TB heater does.... but that would have cost more.
The Copper TB heater gets hot on bare copper side where the TB bolts to it. And it stays cool on the insulated side where it bolts up to the plenum.
Note: With the new HR and VHR engines Nissan/Infiniti is now using the same concept as the Copper Iso Thermal. A plastic plenum assembly for total thermal isolation and hot engine coolant flowed directly to the TB to keep it heated.
----------------------------
PS
I often get the question as to why the Coolant Control Valve should be switched on below 50'F (which is well above freezing).
Joule Thompson cooling effect... Otherwise known as adiabatic expansion.
As the air flows past a partially closed throttle body it undergoes a rapid expansion and decrease in pressure. For the same reason a refrigerator pump cools your refrigerator down, the same effect is happening inside your plenum.
On a cool 40'F day, the air flowing past the TB cools down significantly below ambient temperature. In fact, immediatly behind the TB the plenum goose neck gets much colder than the incomming air and actually goes below freezing.
If the air is humid, the water vapor will freezout and stick behind the throttle plate.
50'F gives enough thermal margin to prevent ice formation on the throttle body plate.
------------
<!-- / message --><!-- sig --><!-- / message --><!-- sig -->
I posted it earlier over on G35 driver. Some poeple over there had the same question.
http://g35driver.com/forums/showthread.php?t=213401
The Copper throtle body heater is need when it gets really cold outside.
Its needed for the same reason Nissan/Infiniti heats the throttle body. The purpose of heating the throttlebody is to prevent ice formation inside the throttle body or on the butterfly valve.
If the butterfly valve is iced up while driving, it can cause a potentially dangerous situation. If, for example, you are driving on the freeway in cruise control on a snowy day, if the throttlebody is not heated it could get iced up.
When you tap the brakes to let off the cruise control the ecu will disengage the cruise control, stop flowing fuel to the engine and close the throttlebody.
But if the throttle body is iced up and stuck in the open position, the ecu will still stop flow of fuel to the engine. This will lean out the engine and cause it to stall. This obviously is never a good situation while driving and this is why Nissan keeps it heated. Its for safety reasons.
What the Copper does is re-route the hot coolant flow from the plenum and directs the heat only to the throttle body. What Nissan does is heat the entire aluminum plenum which in turn keeps the TB hot.
But its not necessary to heat the whole plenum to keep the TB heated. They could have just heated the TB in the same manner as the Copper TB heater does.... but that would have cost more.
The Copper TB heater gets hot on bare copper side where the TB bolts to it. And it stays cool on the insulated side where it bolts up to the plenum.
Note: With the new HR and VHR engines Nissan/Infiniti is now using the same concept as the Copper Iso Thermal. A plastic plenum assembly for total thermal isolation and hot engine coolant flowed directly to the TB to keep it heated.
----------------------------
PS
I often get the question as to why the Coolant Control Valve should be switched on below 50'F (which is well above freezing).
Joule Thompson cooling effect... Otherwise known as adiabatic expansion.
As the air flows past a partially closed throttle body it undergoes a rapid expansion and decrease in pressure. For the same reason a refrigerator pump cools your refrigerator down, the same effect is happening inside your plenum.
On a cool 40'F day, the air flowing past the TB cools down significantly below ambient temperature. In fact, immediatly behind the TB the plenum goose neck gets much colder than the incomming air and actually goes below freezing.
If the air is humid, the water vapor will freezout and stick behind the throttle plate.
50'F gives enough thermal margin to prevent ice formation on the throttle body plate.
------------
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So, in conclusion... Copper Thermal 5/16" MD FTW? It surely seems worthwhile in comparison to the Thermal which is only 30 some dollars cheaper. Thanks again!
MD is good stuff, I just ordered one after doing a TON of research.
Also, Tony is always on here answering questions. Can't put a money figure on getting that type of service and expertise.
I ordered the 5/16s Copper.
Also, Tony is always on here answering questions. Can't put a money figure on getting that type of service and expertise.
I ordered the 5/16s Copper.
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