5GEN Liberty and Legacy 3.6 Exhaust headers

Re: Subaru Liberty and Legacy 3.6 Exhaust headers

Postby Perscitus » Sat Nov 29, 2014 1:19 am

Cold and semi-warm start video of the Raptor headers and AutoMaster/AMR header-back exhaust:

https://www.youtube.com/watch?v=ylgLewUfVb8

Warm start and some revving @ 2:06.

Plus brake flasher mod toward the end of each section (when I apply the brake).
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Re: Subaru Liberty and Legacy 3.6 Exhaust headers

Postby Tradewind » Sat Nov 29, 2014 6:58 am

Thanks for the update - seems to be running perfectly! :)
2015 Liberty 3.6R (6GEN) - Raptor headers and Raptor SUPER MAF
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Re: Subaru Liberty and Legacy 3.6 Exhaust headers

Postby Tradewind » Mon Feb 16, 2015 7:32 pm

Percsitus

Its been quite a while now, any updates to share? You been having the cold weather over there which is always good for engine performance :)
2015 Liberty 3.6R (6GEN) - Raptor headers and Raptor SUPER MAF
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Re: Subaru Liberty and Legacy 3.6 Exhaust headers

Postby Tradewind » Sat Apr 18, 2015 8:27 am

Perscitus isnt updating us, maybe we down under are forgotten

Here is a quote from a recent post on - http://legacygt.com/forums/showpost.php ... count=1505


With the headers, there is enough torque (especially low and mid-RPM) that I rarely ever go WOT or need to downshift - unless I just feel like having some fun and listening to the engine/exhaust tone. On the highway, she's happy between 1.5-2K RPM, sometimes even 1.3K is enough, just cruising along.
2015 Liberty 3.6R (6GEN) - Raptor headers and Raptor SUPER MAF
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Re: Subaru Liberty and Legacy 3.6 Exhaust headers

Postby Perscitus » Fri May 08, 2015 5:29 am

Hi Tim, apologies. Been a hectic couple of months (and one terrible winter).

My Raptor H6 beast has gone catless and she's doing great!

I might re-introduce some spun metal cats back to limit the >4/5KRPM rasp (resonators didn't fully resolve it).

Can you PM me or drop me an email, I wanted to discuss a Raptor SC with you :)
AMR Rob and I talked about it recently....

Latest setup (3rd config)
http://legacygt.com/forums/showpost.php ... count=1511
http://legacygt.com/forums/showpost.php ... count=1513

Previous setup (2nd config; the baffled resonators were not good, amplified rasp and caused pinging):
http://legacygt.com/forums/showpost.php ... count=1496
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Re: Subaru Liberty and Legacy 3.6 Exhaust headers

Postby Tradewind » Fri May 08, 2015 6:03 am

Great to hear from you

Thanks for the updates - you sure have been busy there.

Definitely appreciated the recommendations. Legacy GT must have an FB page - never thought to look for it

I see the PM and am working on that now.
2015 Liberty 3.6R (6GEN) - Raptor headers and Raptor SUPER MAF
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Re: 5GEN Liberty and Legacy 3.6 Exhaust headers

Postby Tradewind » Sat May 09, 2015 7:05 pm

We received word today that the next shipment of headers leaves for Australia in 2 days time. So, just a couple of weeks and we should be in distribution mode
2015 Liberty 3.6R (6GEN) - Raptor headers and Raptor SUPER MAF
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Re: 5GEN Liberty and Legacy 3.6 Exhaust headers

Postby Perscitus » Sat May 30, 2015 1:12 am

One more update from the US.

4th and final revision of the y-pipe fabricated and installed yesterday by AutoMaster Al @ AMR!
Rasp is gone and performance almost as good if not as good as full catless.

http://legacygt.com/forums/showpost.php ... count=1626

With the revisions we've gone through, our findings are similar to 'Daytona's' from the 3.0R Header thread.
viewtopic.php?f=65&t=17262&start=660#p405243

1. The header runner flanges are angled a bit different depending on if the header spacers are used or not to clear the FSB.
This is useful for consideration when designing a custom y.

2. Stock cats will start to fail (its just a question of time) with the headers installed. Exhaust flow and EGTs (especially without a tune) are too high for them to take and they start to collapse, substrate separates from the housing walls. Symptoms: initially some bogging down, sluggish performance, eventually overheating front substrate surface, back-pressure spikes, random mis-fires, random knock. This can be monitored too via logging (BtSSM, FreeSSM,

3. The solution to 2 is either to go a. catless or b. replace OEM cats with larger ID metal core (higher temp tolerating) units. Catless is easier and cheaper, nets a slight performance gain, but calls for a retune (to realize it and to run safe), but results in a RASP >5K RPM that doesn't sound good at all.

Catless: Exhaust fume smell is minimal (potentially thanks to the tune). Using baffled resonators in place of the cats causes pinging within the y-pipe and doesn't eliminate the rasp, using perforated straight through resonators doesn't eliminate the rasp either but eliminates the pinging.

Catted: Using 100 cell race/metal cats only partially eliminates the rasp.
200 and 200+ cell cats eliminate (or rather muffle) the rasp enough to make it livable, streetable.

4. With the y-pipe design figured out (2.5" ID piping throughout, 2x 2.5" 200-cell metal cats), the location and way it mates to the catback is also different from car to car. All depends on what exhaust we're running (stock 3.6R CBE, modified LGT CBEs in either 2.5" ID, 3" IDs, resonated, non-resonated, flanged or not). Depending on the CBE, the inlet can be offset by as much as an 1-1.5" making coming up with a PnP y-pipe tricky.
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Re: 5GEN Liberty and Legacy 3.6 Exhaust headers

Postby Tradewind » Sat May 30, 2015 6:47 am

Hey Per

Can you post a pic of your system in it's latest format
2015 Liberty 3.6R (6GEN) - Raptor headers and Raptor SUPER MAF
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Re: 5GEN Liberty and Legacy 3.6 Exhaust headers

Postby Perscitus » Sat May 30, 2015 12:16 pm

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Re: 5GEN Liberty and Legacy 3.6 Exhaust headers

Postby Spec BSC » Mon Jun 01, 2015 3:44 am

Perscitus wrote:One more update from the US.

4th and final revision of the y-pipe fabricated and installed yesterday by AutoMaster Al @ AMR!
Rasp is gone and performance almost as good if not as good as full catless.

http://legacygt.com/forums/showpost.php ... count=1626

With the revisions we've gone through, our findings are similar to 'Daytona's' from the 3.0R Header thread.
viewtopic.php?f=65&t=17262&start=660#p405243

1. The header runner flanges are angled a bit different depending on if the header spacers are used or not to clear the FSB.
This is useful for consideration when designing a custom y.

2. Stock cats will start to fail (its just a question of time) with the headers installed. Exhaust flow and EGTs (especially without a tune) are too high for them to take and they start to collapse, substrate separates from the housing walls. Symptoms: initially some bogging down, sluggish performance, eventually overheating front substrate surface, back-pressure spikes, random mis-fires, random knock. This can be monitored too via logging (BtSSM, FreeSSM,

3. The solution to 2 is either to go a. catless or b. replace OEM cats with larger ID metal core (higher temp tolerating) units. Catless is easier and cheaper, nets a slight performance gain, but calls for a retune (to realize it and to run safe), but results in a RASP >5K RPM that doesn't sound good at all.

Catless: Exhaust fume smell is minimal (potentially thanks to the tune). Using baffled resonators in place of the cats causes pinging within the y-pipe and doesn't eliminate the rasp, using perforated straight through resonators doesn't eliminate the rasp either but eliminates the pinging.

Catted: Using 100 cell race/metal cats only partially eliminates the rasp.
200 and 200+ cell cats eliminate (or rather muffle) the rasp enough to make it livable, streetable.

4. With the y-pipe design figured out (2.5" ID piping throughout, 2x 2.5" 200-cell metal cats), the location and way it mates to the catback is also different from car to car. All depends on what exhaust we're running (stock 3.6R CBE, modified LGT CBEs in either 2.5" ID, 3" IDs, resonated, non-resonated, flanged or not). Depending on the CBE, the inlet can be offset by as much as an 1-1.5" making coming up with a PnP y-pipe tricky.



Very interesting. I had a system built with 200cel sports cats, within 500 miles they were totally destroyed and the debris was sucked back into the engine causing it to seize. I am currently running catless because of the fear of destroying the engine again. I am currently running a 3" system with the supercharger, no rasp at 5k.

Like your work, good stuff.
The first engine died after eating to much CAT
The second engine died of a broken piston
The third engine is in the car
The fourth engine is in the machine shop

So far: Rotrex Supercharger (16 psi) with WTA intercooler,DW300c fuel pump,565cc Pink injectors
Producing 431bhp and 350 lb/ft torque on the Rotrex SC not finished yet
Raptor headers, 75mm Milltek exhaust with Quad tips,
Custom made 4032 forged pistons by JE Pistons, forged conrods, Exedy Clutch
K sport 8 pot front, 4 pot rears all on 330mm discs, Hel brake lines
Meister R coil overs, Whiteline 21mm rear ARB, Perrin end links and strengthening brackets
Complete Whiteline kit for the front suspension including steering rack
One off Carbon effect Front grill, Carbon lip spoiler, Exterior De-chromed, LED interior light conversion.
Recaro Leather front seats with all functionality.
Waist spoiler, Smoked rear lights,, LED sill plates, LED sidelights
Prodrive PFF7's 18x8, in Bronze shod with 235/40/18 Goodyears.
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Re: 5GEN Liberty and Legacy 3.6 Exhaust headers

Postby Tradewind » Tue Jun 23, 2015 7:50 pm

Update

The new header shipment is now on road freight and will be at Raptor in around 48 hrs time - orders will then start to be processed
2015 Liberty 3.6R (6GEN) - Raptor headers and Raptor SUPER MAF
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Re: 5GEN Liberty and Legacy 3.6 Exhaust headers

Postby Tradewind » Wed Aug 26, 2015 12:36 pm

The next Raptor header shipment is NOW UNDERWAY at the factory - will progress report here as normal. Should be on way here around the 8/10/15
2015 Liberty 3.6R (6GEN) - Raptor headers and Raptor SUPER MAF
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Re: 5GEN Liberty and Legacy 3.6 Exhaust headers

Postby Tradewind » Tue Dec 15, 2015 8:03 am

EZ36 Headers are currently shipping to customers in USA

Get in quick as there are very few sets left. :mrgreen:
2015 Liberty 3.6R (6GEN) - Raptor headers and Raptor SUPER MAF
Tradewind
 
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Real name: Tim

Re: 5GEN Liberty and Legacy 3.6 Exhaust headers

Postby Perscitus » Tue Jun 14, 2016 9:12 am

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