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Old 08-22-2003, 09:44 PM   #1
Dr Ken
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Default Where to get Phenolic Spacers

Anyone know where to get precut EJ25 phenolic spacers for the intake manifold?

I've been trying Unique Motorsports, who used to make them, but they aren't replying and I think aren't producing them any longer. Thanks.
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Old 08-22-2003, 11:11 PM   #2
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I am trying to get Hondata to make their heatshield intake gaskets for EJ25. They said they are in the process for making them for WRX, are they the same?
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Old 08-23-2003, 12:36 AM   #3
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Yeah, looks pretty much like the same stuff. I honestly don't know if the EJ20 = EJ25, in this respect.

Here is a pic of the old Unique Motors' for EJ25:
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Old 08-24-2003, 01:32 PM   #4
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I just bought a set from Chad->Unique Motorsports. His service was great, and replies were prompt.

I haven't installed them yet, but they are very nice, I cant' wait to get them on.
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Old 08-24-2003, 02:31 PM   #5
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chad doesn't make them anymore and never made them for the phase 2 motors, he only had the phase 1's.

you are SOL
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Old 08-24-2003, 06:42 PM   #6
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Excuse my egnorance (<--and spelling) but what are Phenolic Spacers and what do they do.
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Old 08-24-2003, 08:11 PM   #7
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Quote:
Originally posted by sti27
Excuse my egnorance (<--and spelling) but what are Phenolic Spacers and what do they do.
Reduce intake temps, by reducing the amount of heat that is transfered from the engine to the intake manifold. Rather having metal to metal contact you have engine + spacer + intake manifold.

Oh yeah Phenolic is the material. http://www.sdplastics.com/phenolic.html
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Old 08-25-2003, 10:30 AM   #8
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anyone know if theres any differences in the intake manifolds on the 02-03's and the 04's besides the plastic? that could be another alt. way to go about things, although a little more expensive
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Old 08-25-2003, 11:33 PM   #9
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Good thought, nySulli.

Compressed, would you consider cloning yours ?

I bet there is a market sufficient to justify the re-fabrication of these things.... a tonne of loot to be made by someone. I'd go so far as to finance a bunch to be laser cut, if someone can develop a prototype.
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Old 08-26-2003, 04:55 AM   #10
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Quote:
Originally posted by Dr Ken
Good thought, nySulli.

Compressed, would you consider cloning yours ?

I bet there is a market sufficient to justify the re-fabrication of these things.... a tonne of loot to be made by someone. I'd go so far as to finance a bunch to be laser cut, if someone can develop a prototype.
you missed what i said about the phase 1 phase 2 comment, you have a phase 2, 98;s were phase one as well at 99 Legacy GT's
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Old 08-26-2003, 11:03 AM   #11
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ahhhh so,
Sorry HndaTch627, I didn't comprehend what you said.... I'm totally cluless with these phases. So Phase-2 is both '00 and '01? Thanks for the clarity.

RokketRide, how's it going with Hondata ?
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Old 08-26-2003, 11:49 AM   #12
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Last week the guy told me about the WRX kit, and thats about it. Is it gonna work on our cars?

I dont know what kind of demand they require to want to have some made (it cant cost them THAT much, they make several different kits now).

Everyone email them and ask if they have something for EJ25.
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Old 08-26-2003, 10:51 PM   #13
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email to Hondata sent
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Old 01-11-2004, 11:26 PM   #14
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If any one is still interested in phenolic spacers, I have just made 15 sets of these for the Phase II SOHC. I am also in the process of producing these for the EJ20 as well.

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2453707499

-Jimmy
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Old 01-12-2004, 02:20 AM   #15
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im very interested but not sure what to expect. anyone?
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Old 01-12-2004, 03:49 AM   #16
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The eBay ad says Imprezas and Foresters... no Legacys?
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Old 01-12-2004, 04:26 AM   #17
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They'll fit fine on 2000+ Legacys and Outbacks, too - same engine.

Darioc, I wouldn't expect much, maybe a couple horsepower at the most. Yes, they'll definitely keep the intake manifold cooler, but that's not gonna make a huge difference. When you think about how quickly air is being drawn through the manifold, it just doesn't spend a lot of time in contact with the hot intake manifold, and therefore doesn't have much time to pick up heat. I've never seen any before/after air charge temperature data - I'd be curious to see how much of a difference it really makes.

Oh, and Jimmy, I noticed that your Ebay ad says that the spacers are intended to replace the intake manifold gaskets. I know in Mustang-land (my other car) the phenolic spacers made by BBK, TFS, etc come with replacement gaskets - one to go between the spacer and the head, and one to go between the spacer and the intake manifold. You need to make sure your customers understand that a phenolic spacer is not a gasket. Also, how do the bolts fit with the phenolic spacers in there - are the stock bolts long enough? Just some things to look out for...

Pat Olsen
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Old 01-12-2004, 10:11 AM   #18
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To comment on Pat's post.

yes, you will need either two separate intake manifold gaskets, or some form of silicone gasket maker to put on the spacers.

The bolt length issue. Honestly, this was the main reason I didn't go with them at the time I had my manifold off. On my car at least, the bolts will reach, however the amount of threads that is actually in the head is not very much, and was a little too close for comfort in my mind. Not sure if the newer motors are the same way. I know if I were to use the spacers, I'd try and source longer bolts.

Just to note: The torque spec on those bolts will relate to how much of the threads are actually in.......like I said....I just don't feel comfortable about it, but that's me....
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Old 01-12-2004, 01:17 PM   #19
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Rule of thumb for minimum bolt ingagement:

into steel-depth = 1 bolt diameter min.

into aluminum-depth = 2 bolt diameters min.

Thus a 1/4" bolt must go 1/4" min. into steel or 1/2" min into aluminum.
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Old 01-12-2004, 02:37 PM   #20
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Quote:
Originally posted by EvasionOfTruth
Oh yeah Phenolic is the material. http://www.sdplastics.com/phenolic.html
i noticed that site said it is a "g-7" material. when i was researching this yesterday (funny, cus i didn't see this post) i read that most of the ford people use a g-10 material. :scraches head: intresting.
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Old 01-12-2004, 05:53 PM   #21
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Here's a pic of the phenolic spacer I use on my '00 RS:

http://www.crownautocross.org/misc/m...d/111_1121.JPG



- Steve
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Old 01-12-2004, 06:09 PM   #22
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Quote:
Originally posted by zzyzx
Here's a pic of the phenolic spacer I use on my '00 RS:

http://www.crownautocross.org/misc/m...d/111_1121.JPG



- Steve
Did the plastic manifold help at all?
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Old 01-14-2004, 08:06 PM   #23
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Finally !

link

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Old 01-15-2004, 06:46 PM   #24
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To address some issues:

I am including 2 sets of gaskets with each set of spacers, as these things seem fairly hard to find, at least around here any way. I wouldn't want somebody to order the spacers only to discover that niether their local dealership or auto parts stores have gaskets on hand.

And as to the bolt length issue, I don't have Subaru to work on any more, so I don't have a way of finding out. However, Dr Ken made his own 1/4" spacers, and he told me there was no problem. I do have a friend with an impreza, so I might be able to get some pictures soon.
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Old 01-16-2004, 06:16 AM   #25
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finally someone made them, i think i might just pick up a set of these
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