Check ya Plenum!

Posts specific to the 3.0 litre NA H6 engine

Re: Check ya Plenum!

Postby mekros » Fri Aug 15, 2014 5:32 am

Image

Looks like mine is cracked too.

I'm tempted to see if someone can make a carbon fibre one.
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Re: Check ya Plenum!

Postby sheppo9 » Wed Aug 20, 2014 1:41 pm

Just wondering if all the cracked ones are the pre-facelift models?
If so, they have a white perforated baffle in them (which can be removed if you break it up/twist it around etc - not sure what it's actually supposed to do and don't really care).
The post-facelift do not have this baffle.
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Re: Check ya Plenum!

Postby 3rspecb » Wed Aug 20, 2014 2:21 pm

My Pre Face lift Intake chamber does not have the white insert and is also crack free :) But haven't used it for a while due to S/C :wink:

I have a spare intake chamber I bought from a wrecked Post face lift which has the white insert and the intake chamber is slightly cracked :o ..
Last edited by 3rspecb on Wed Aug 20, 2014 6:42 pm, edited 1 time in total.
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Re: Check ya Plenum!

Postby KiDo_Tuning » Wed Aug 20, 2014 4:25 pm

FYI: Correct terminology is actually a surge tank... this box is designed to give the engine a reservoir to supply air from under high demand situations, ie going from light throttle to full throttle, engine will quickly consume the air in the tank while giving a slow rising load value to the MAF :) Also means on throttle back off, you do not get airflow reversion since the EZ30 motor is capable of more than 100% volumetric efficiency, this tank is important to keep.
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Re: Check ya Plenum!

Postby <GB> » Wed Aug 20, 2014 7:18 pm

ive glued other cars surge tank as matt said using q bond ha ha never seen it on a Subaru like that before
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Re: Check ya Plenum!

Postby Brunsy3.0 » Wed Aug 20, 2014 9:11 pm

If I find kine is cracked what would be best to fix it with? Araldite or 2 part bonding glue? Or would plastic welding be the best fix?
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Re: Check ya Plenum!

Postby Tradewind » Thu Aug 21, 2014 7:22 am

KiDo_Tuning wrote:FYI: Correct terminology is actually a surge tank... this box is designed to give the engine a reservoir to supply air from under high demand situations, ie going from light throttle to full throttle, engine will quickly consume the air in the tank while giving a slow rising load value to the MAF :) Also means on throttle back off, you do not get airflow reversion since the EZ30 motor is capable of more than 100% volumetric efficiency, this tank is important to keep.



What the man said, it is very important to the performance of this motor.
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Re: Check ya Plenum!

Postby Swan_Liberty » Wed Sep 03, 2014 2:17 pm

Noticed the beginnings of a crack, very small at the moment, what do people recommend in terms of fixing it? glue? super glue? super super super glue? araldite? buy a new unit?
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Re: Check ya Plenum!

Postby KiDo_Tuning » Wed Sep 03, 2014 2:54 pm

Swan_Liberty wrote:Noticed the beginnings of a crack, very small at the moment, what do people recommend in terms of fixing it? glue? super glue? super super super glue? araldite? buy a new unit?


Super glue, Sikaflex 227 or even a soldering iron to melt the crack have been used with success
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Re: Check ya Plenum!

Postby kiasu9s » Fri Sep 05, 2014 7:16 am

Drill a tiny hole at the end of the crack to stop it from cracking further. Clean up any debris in there and seal it up with your favourite glue.
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Re: Check ya Plenum!

Postby Out6ack » Fri Sep 05, 2014 8:48 am

Just be mindful peoples that any shavings or dags from inflexible or incompatible glues have got a free pass to your precious cylinder bores. I took mine to a plastic welder who specializes in bumper repairs. Many plastics are incompatible with certain glues etc. Don't stuff around with that area of your engine..
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Re: Check ya Plenum!

Postby chanham » Fri Sep 05, 2014 8:37 pm

mines cracked too :(
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Re: Check ya Plenum!

Postby chanham » Sat Sep 06, 2014 4:20 pm

What's the go with this surely a bit of silicon should fix it yeah?
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Re: Check ya Plenum!

Postby chanham » Mon Sep 15, 2014 10:01 pm

got the soldering iron out to fix it up:

before:
Image

after:
Image
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