Welcome to the North American Subaru Impreza Owners Club Thursday April 17, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Mid West Subaru Owners Club
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Chapters > Mid West Subaru Owners Club Forum -- MWSOC > MWSOC Vendor Classifieds

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Closed Thread
 
Thread Tools Display Modes
Old 07-09-2007, 10:39 PM   #1
GrimmSpeed
NASIOC Vendor
Vendor Sales Rating: (207)
 
Member#: 136396
Join Date: Jan 2007
Chapter/Region: MWSOC
Location: Minneapolis, MN
Vehicle:
2013 BRZ
SWP

Default GrimmSpeed Phenolic Spacers

Do you know what your intake manifold sits on?...a superheated boxer engine. If you don't know already, the cooler your intake air is the more HP your car will achieve.

We present you the answer to this age old problem, raising the intake manifold off the engine with GrimmSpeed's new real Phenolic Intake Manifold/TGV to Engine Thermal Spacers.

Real Phenolic spacers have been used for years by many other specialized automotive companies, but this is pretty new technology to the Subaru world. We have two versions, 3mm and 8mm. The 3mm version is for cars with top-mount intercoolers and the 8mm version is for cars with a frount-mount intercooler or no intercooler at all.

In the weeks to come we will be expanding our phenolic spacer product line to include pieces that fit most 93-01 subarus as well.


-8mm versions come with 8 longer intake manifold bolts.
-Greatly reduces the transer of heat from engine to intake manifold
-One of a kind true Phenolic material, not cutting board material like others.
-The cooler your intake temperature is the denser the air is which leads to more power
-We have installed both with and without OEM Subaru Gaskets and have had no issues with either way. We do recommend using 2 sets of oem gaskets however, one on both sides of the spacer. If you decide to use a gasket both on top and bottom of the 8mm spacer the top gasket will not be held in by the alignment pin, only the 4 IM bolts.
-USA made


Applications:
02-07 WRX
02-07 STi
02-07 Legacy GT
02-07 Forrester XT

3mm Phenolic Spacers link: http://www.grimmspeed.com/catalog/pr...products_id=41
8mm Phenolic Spacers link: http://www.grimmspeed.com/catalog/pr...products_id=54

3mm pictures:







8mm Pictures:









An exerpt from a 3rd party's study...
"Why it Works

While many avenues exist for boosting the power output of an engine, most approaches focus on ways to increase the volumetric efficiency of the system. Ported heads, larger diameter exhausts, headers, and bigger throttle bodies serve to decrease the resistance to airflow through the engine. The modification shown here, however, does not increase the volume of air flowing through an engine, but rather increases its mass flow.

Cold air is more dense than hot air and takes up less space. So if your engine can ingest cooler air, more air can be mixed with more fuel, which gives more power. An additional benefit is that cooler air has a higher resistance to knock, allowing more ignition timing advance - or boost in supercharged applications. Either way, they both equal more power! This is the theory behind cold air intakes, ice on the manifold, and intercoolers.

The intake air in EFI engines is drawn through the airflow meter and throttle body, and then into an alloy intake manifold. During its residence in the intake manifold casting, the air charge picks up unwanted heat from the manifold, increasing its volume and lowering the resistance of the engine to knock.

One of the possibilities for reducing the intake air temperature is to install a cold air intake. However, another possibility is to reduce the heat conduction from the hot engine to the intake manifold by thermally separating the two. By replacing the steel intake manifold gaskets with an insulating spacer, heat conduction to the manifold can be greatly reduced. The best material for the spacers has a low thermal conductivity, high compressive strength, is able to withstand up to 300 degrees F (~150 degrees C), and is affordable. Phenolics, with excellent insulating properties, high stiffness, and the ability to withstand 500+ degrees F (260 degrees C), are commonly chosen for similar applications. Additionally, the coefficient of thermal expansion of a phenolic is similar to that of aluminium, which helps to reduce sealing problems in this particular use.

When compared to the 0.025 inch steel gasket it replaces, a quarter inch thick phenolic insulator will conduct 200-1000 times less heat! Although the insulation benefits increase with thickness, ΒΌ inch (6.4mm) sheet was chosen because this is the thickest that can generally be used with stock mounting studs and bolts.

Manifold Temperature Data
The basic function of the insulators is to reduce intake manifold temperatures, so what better way to test than to record and compare temp data before and after the install? I took the temperature readings from the front centre intake runner using a professional quality CPS T200 temperature sensor with a time constant of the order of 5 seconds. The sensor was mounted on the front middle intake runner for all tests and the vehicle was driven as close to 60 mph (~100 km/h) as traffic would allow. After the driving test, the engine was allowed to idle for a sufficient time to show the maximum temperature.

The data is shown as a temperature change above ambient. As you can see, the temperature of the intake manifold reached a steady state of approximately 30 degrees F (17 degrees C) lower - 40 degrees F versus 70 degrees F - with the insulators than without during 60 mph cruising. During the idle test (the higher temps at the right end of the graph), the non-insulated engine was 52 degrees F (29 degrees C) hotter and still climbing when the test was aborted. A non-quantitative comment: I can place my hand on the intake after a drive with the insulators installed, whereas I would have burned myself previously!
….
Summary

Having seen many people shell out hundreds of dollars for performance mods of dubious value, I wanted as much data as possible to show that this intake manifold insulator thing really worked. I was able to show that:

The intake ran 30 degrees F (17 degrees C) cooler at cruise and at least 50 degrees F (28 degrees C) cooler at idle;
According to my dyno plots, I gained up to 7 horsepower and 11 ft-lbs of torque over the major portion of the power curve.
My best time at the track was ~0.1 seconds quicker and ~1 mph faster "


Justin
www.grimmspeed.com
* Registered users of the site do not see these ads.
GrimmSpeed is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Grimmspeed Phenolic spacers IllNastyImpreza Normally Aspirated with bolt-on Forced Induction Powertrain 7 06-16-2009 06:03 PM
GrimmSpeed Phenolic Spacers, HiFlow Crosspipe, and more.. GrimmSpeed Engine/Power/Exhaust 8 09-27-2007 03:09 PM
FS:(So Cal) APS Inlet, Grimmspeed Phenolic Spacers, Cusco Heatshield and RS-R DP Drag-On Engine/Power/Exhaust 18 08-12-2007 02:05 PM
Grimmspeed Phenolic Spacers snwman Engine/Power/Exhaust 7 07-17-2007 06:18 PM
FS MN: Grimmspeed Phenolic Spacers + Gaskets p@rwrx Engine/Power/Exhaust 5 07-05-2007 11:54 AM


All times are GMT -4. The time now is 11:02 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.