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View Full Version : 034 Intake Manifold Spacer, 1.8t, Phenolic



97_a4_1.8t
11-26-2009, 04:04 PM
034 Intake Manifold Spacer
what are these suppose to do?
is there any benefit in installing intake mani spacers?
would it be worth it for $57?

lbs4
11-26-2009, 04:13 PM
i was wondering the same thing

Altech75
11-26-2009, 04:28 PM
If you're referring to these (http://www.034motorsport.com/product_info.php?cPath=28_61&products_id=764), then they're supposed to keep heat from transferring from the head to the intake manifold and thus help keep the ambient air temp down. I'm not really sure if they work, or if they in some way impede airflow by doing the exact opposite that a port & polish would do. If you're on a dyno and you have them then put them on and see if they actually do anything, but the difference it makes would prolly be really small.

Oceanside
11-26-2009, 04:40 PM
The PowerGasket Plus™ is made from a purpose-built high performance composite material. It conducts on average less than 1/500th of the heat of the steel gasket that it replaces. Your intake manifold will stay 30-50 F cooler and your incoming air will stay 20-30 F cooler.
http://www.newsouthperformance.com/images/pgplus/cars/intake.gif
from Newsouth site

biketsai
11-26-2009, 04:48 PM
Sounds good, but is it true?

salz2135
11-26-2009, 04:55 PM
Maybe an engineer can chime in, but I always thought part of the intake manifold's purpose is to act as a heat sink pulling heat away from the engine block.

If this is correct, then the spacer would actually counter this design element and engine heat would remain higher than without the spacer.

b5andm3
11-26-2009, 05:06 PM
They work because our intake manifolds are made out of metal. Metal is very conducive to heat. By spacing allowing more separation between the IM and the head, IAT should be cooler. By how much, thats up for debate.

I am running the Thermalnator from RAI, http://www.raimotorsport.com/Thermalnator-1-8T-Small-Port-p/tn_025.htm

97_a4_1.8t
11-26-2009, 05:25 PM
yeah
so would it be worth getting it?

b5andm3
11-26-2009, 05:37 PM
meh. It might be good for 3-4awhp

97_a4_1.8t
11-26-2009, 05:42 PM
any addition hp is worth it lol and plus it would give me a reason to take off the intake manifold and sandblast it and possibly paint it.

b5andm3
11-26-2009, 05:51 PM
any addition hp is worth it lol and plus it would give me a reason to take off the intake manifold and sandblast it and possibly paint it.

I would put the money towards a test pipe first in your case. You'll notice that a lot more.

97_a4_1.8t
11-26-2009, 05:53 PM
check my sig
i allready have one :)

blmlozz
11-26-2009, 06:13 PM
I never did any quantifiable tests, however I ran the 034 one that's an acutal spacer rather than mmore of a powergasket type thing. The I/M was defentaly *much* colder after a drive than without. at least by 20 degrees considering that touching would incude burns before and it was almost ambient temp wise after.

97_a4_1.8t
11-26-2009, 06:21 PM
thats good to hear that it makes a noticable difference in temperature.

B6T
11-26-2009, 07:59 PM
Maybe an engineer can chime in, but I always thought part of the intake manifold's purpose is to act as a heat sink pulling heat away from the engine block.

I'm not an automotive or a powertrain engineer, but I was going to say that the intake ports need to maintain a certain temperature to prevent fuel condensation, subsequent pooling, and all the adverse effects that this would cause as air velocity varies through the pooled fuel (try achieving a stable A/F mixture like this!). However, I'm pretty sure the fuel injectors are position in such a way that fuel is shot directly at the intake valves, so there is no risk of this happening. I think it's more necessary for TBI or carbureted engines.

As far as the intake manifold being a heat sink, the more heat you pull away from the combustion chamber, the less efficient the engine is. You want to keep as much heat in the engine as possible since heat is simply energy converted from fuel, and if you start dissipating heat through a sink you might as well pop a pin hole in your fuel line.

salz2135
11-26-2009, 10:28 PM
All right, so if people with experience using a spacer are reporting that the intake manifold feels cooler to the touch, has anyone actually logged intake temps to verify that it's doing anything useful?

ncgti
11-30-2009, 04:33 PM
Maybe an engineer can chime in, but I always thought part of the intake manifold's purpose is to act as a heat sink pulling heat away from the engine block....snip


I am an automotive design engineer.

The intake is not designed to be a heat sink. The head temperature is regulated (cooled) by the water/coolant and oil that is flowing through it.

The PowerGasket and other products like it prevent the heat from flowing through the head to the intake, which in turn lowers intake temps. Does it really work and lower the intake temperatures? Yes it does.

There is a shop in North Carolina that installed a PowerGasket on a 2.7 S4. The shop took the car to a local dragstrip to race head-to-head with an identical 2.7 S4 except the other car did not have a PowerGasket, just the stock gasket. After waiting in the staging line, just before launch, the PowerGasket-equipped S4's intake air temperature was 30F cooler (as read by the VAGCOM) than the stock S4.

oneohone
11-30-2009, 05:35 PM
^Nice!

gli_ryan
11-30-2009, 06:51 PM
and then what happened?

A4-Achtung
12-01-2009, 04:29 AM
^LOL yeah that would be the most important part in my opinion.

gli_ryan
12-01-2009, 08:18 AM
I know right? Its like saying two guys were in a fight, one guy sucked with a gun and the other was a master swordsman with a sword.

RoadRage
12-01-2009, 08:27 AM
I think ECS has one that's ~$10 cheaper right now. Their site also claims 20-40 degrees cooler air/intake manifold.

blmlozz
12-01-2009, 08:48 AM
^LOL yeah that would be the most important part in my opinion.

stock S4s on stock intercoolers? I'm sure the powergasket S4 won assuming all other things are equal.. which is impossible since no two drivers are alike and it's such a small mod that the same driver would probaly not be able to exactly duplicate his driving style twice.

ncgti
12-01-2009, 09:51 AM
and then what happened?

As I recall the S4 with the PowerGasket did win - but I believe that he is a more accomplished driver.

clarkperez2334
01-28-2011, 10:50 PM
The more air your engine has available, the easier it is for it to create power. So, the role of manifold spacer is to provide more air volume for more efficient power generation. And my VMax Manifold Spacer Kit by Street and Performance (http://www.stylintrucks.com/sn.aspx?attribute_value_string|Brand=Street+and+Pe rformance) provides me up to 31% more air volume. :)

SR-71
01-29-2011, 02:47 AM
What? Please explain how you figured that out...

All that gasket will do is make the intake manifold stay cool for longer. Heatsoak will still occur but it will take more time.

blmlozz
01-29-2011, 06:26 AM
What? Please explain how you figured that out...

All that gasket will do is make the intake manifold stay cool for longer. Heatsoak will still occur but it will take more time.

I'm sure it's a ad bot. Let it go. The fact that it's a 2 year old thread give you a clue?