Phenolic Spacers Anyone?

We started the planning stages for our newest modification for the Aveo, Phenolic Spacers.

What are they?
- They are a 1/4" spacer that is placed in between the intake manifold and the head, and in between the throttle body and in the intake manifold.

What do they do?
- They are designed to both increase the velocity of the intake runner, helping the air to flow better, and then they also help lower intake air temperatures because the spacer does not heat up like the intake does, so the cooler intake temperatures will give you additional horsepower for the colder air.

Will I Notice a Difference?
- The phenolic spacer has been proven to create an average of 3.1 horsepower to your system due to it helping the engine run an average 20 degrees cooler. It has also been proven to shift the power curve to the left about 50rpm, which actually help you in acceleration by getting power sooner.

What is included in the kit?
- You will receive everything needed to install (minus a brain and handtools). Comes with Stainless Steel manifold and Throttle Body bolts that are lengthened to accomodate the spacer. You will also receive 2 gaskets per spacer, one for each side of the spacer to seal it to the surfaces.

How much is it?
- The Phenolic Spacer for the Chevrolet Aveo is $69.99, and comes ready to install.

How many people would be ready to buy? Install in less than an hour and get more horsepower than an underdrive pulley...

It also reduces restrictions because of the "added space."

Sign me up

count me in!

was skeptical... googled a bit... these things do appear to work, with dyno runs to back it up.

Will the spacer require longer bolts, and if so will they be included. What about hood/firewall clearance? What's up with the drastic price differences I see. 1" Mustang cobra spacers run $50, audi 4cyl run $119... Why would a 4cyl be more expensive than an 8cyl?

Are they port-matched or gasket-matched?

Thing to remember is that spacers don't give you extra HP, it just slows down the amount of HP loss due to heat soak between the block and the IM. And there is less heat transfer to composite manifolds vs metal ones...
1/4" extra runner length isn't going to do anything considering the VGIS, and I'll give you a dollar if you feel a 50 rpm shift in the torque/hp curve.

Also, don't forget that you should bypass the TB coolant routing in order to get the most out of it.

I'm not knocking the spacer, but the claims are getting close to the point of ebayness.

3 HP isn't close the point of a 20 dollar radio shack resistor, lol...

EX - Yes, it comes with Stainless Steel hardware. And the price different is simply supply and demand... Sell 1 at $115 or Sell 20 at $50...

MTLSwift - We usually design them after the gasket, which is matched to the head, but the intake manifold is usually a little smaller. If you request it, we would have no problem making it to the head specs.

I have used these in my Project Ford Probe, and am also creating them for my 240sx, and while mine have both been in addition to an acid ported intake manifold, you can definitely feel the different...

oh, almost forgot... will it come with a new gasket, or will we have to get one elsewhere?

count me in :)

sorry to rain on your parade but they are done already, I have them in the works for the head-intake, GVIS-plenum, and throttle body.

I started on them when at the same time as the 2.0/2.2 CHECK IT OUT

...HERE TOO

Garrett

I say good, another source for one!

Quote:

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Originally Posted by exodus

oh, almost forgot... will it come with a new gasket, or will we have to get one elsewhere?

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Dudes, everybody has to read the 1st post carefully. It comes with longer bolts AND gaskets.

Quote:

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Originally Posted by mtlswift

Quote:

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Originally Posted by exodus

oh, almost forgot... will it come with a new gasket, or will we have to get one elsewhere?

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Dudes, everybody has to read the 1st post carefully. It comes with longer bolts AND gaskets.

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Yeah I wasn't going to bring that up...

:oops:

Nothing wrong with a little friendly competition... You haven't got them completed, so they aren't to be exclusive... Mine are ready to go...

I was unsure if I should post this, but.... we have plastic intake manifolds. I ran phenolic spacers on my Subaru (http://www.uniquemotorsports.com/subach ... pacers.htm) for a few years and yes they definately keep the intake manifold cooler. Thing is, with a plastic intake, it's not going to heat up. That's one of the advantages to a plastic intake manifold. That said, how is this going to help keep the engine cool on an Aveo when there is no heat transfer anyway? Am I the only one with a plastic intake manifold?

saying there's NO heat transfer is a stretch. Obviously plastic/composite is less conducive to energy than metal.

Has anyone done multiple dyno pulls to actually see if there is or isn't a noticeable drop in power between the first and last pulls?

Another good way to test would be with the use a temp gun, I think. Check the manifold temp at warm idle (before driving, but after warm up). Drive for 20-30minutes, check again. Drive for another 20-30minutes, check again.

Quote:

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Originally Posted by subachad

I was unsure if I should post this, but.... we have plastic intake manifolds. Am I the only one with a plastic intake manifold?

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I said that (composite manifold). Just by touch, it stays pretty cool to the touch, both the manifold and TB (with the coolant lines bypassed) after a 1 hr city driving jaunt this weekend.

We did dyno pulls with our Probe we had, and on a stock engine (I/E/H) we got a 7hp increase. We threw on our ported manifold and got a 25hp increase total...

does a probe use a plastic manifold?

My custom metal intake is HOT to the touch because it was not coated..while i have touched plastic intakes that were at operating temp that were warm...but not HOT.

No probe is Cast Aluminum... thought he meant in general...

Does this mean I can post in your threads as long as no bashing is occurring?

He didn't bash, he asked a legimate question about the intake manifold that did not seem to be meant to deter people from your product. So both xtreme and spec-r let's keep it that way.

someone needs to chop up an aveo IM and measure the thermal conductivity wrt to phenolic. :)
I guess the point is that you can't directly correlate HP gains between a metal IM and a plastic IM... with metal IMs I've read about 4% gains after heatsoak... plastic + ~90 whp stock might net you 1-2 hp max.

From the research I have done which included running phenolic spacers on my Subaru, they don't actually add power, but they help keep you from losing it as your engine gets heat soaked. I can vouch for their effectiveness on an all aluminum engine as found in the subie, but I simply do not see how they could work on a car which already has a plastic intake manifold.

Swaybars would sure be nice though :)

oh yes we definetly need some swaybars big time, this car rolls too much

working on it... but since the only test subject I have is a complete engine on a stand, I don't have much to work with right now for suspension products...