Phase 9 Mufflers?
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Joined: Aug 2001
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From: Kent, CT
Phase 9 Mufflers?
Hey all, I'm looking at some Phase 9 mufflers to complete a custom exhaust I'm working on. Has anyone used these? I'll be putting them on my 3.2 PCA Club Racing car and wanted to get some feedback regarding, longevity, effectiveness and Db readings( I have to pass 89Db for Limerock). Thanks in advance!
Cheers, James
Cheers, James
Drifting
Joined: Nov 2001
Posts: 2,014
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From: Round Hill, Virginia
I have used them on everything between a 2.7 and a 3.6. If you run them with the silencer (muffler) it is a VERY quite system. I have them on a 3.4 GT-3 911 with just the expansion chambers and it is less than 103db at Summit Point. I do not have any db readings on a car with the silencer installed.
This system makes very good power and is very quite. If you can fit it on your car I would suggest it. I don't think you will find a better all around package.
This system makes very good power and is very quite. If you can fit it on your car I would suggest it. I don't think you will find a better all around package.
Thread Starter
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Joined: Aug 2001
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From: Kent, CT
Chris, If I'm understanding you correctly, you run the phase 9's plus some other silencer after? Do you have any pictures of your system? Also, I'm looking at some 1 5/8 headers, are these a good size for my car?
Cheers, James
Cheers, James
Three Wheelin'
Joined: Feb 2002
Posts: 1,355
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From: Virginia
Muffler alternative
A local speed shop http://www.mufflex-performance.com/ has established a cottage industry adapting monster dual inlet/outlet Flowmasters designed for GM F bodies to 911s, about $600 installed. Passes noise restrictions at LRP. No dyno info but the consensus seems to be positive on power. I believe Dan Jacobs is using this setup along w/ two or three east coast G cars.
Brandon #77 G
Brandon #77 G
Drifting
Joined: Nov 2001
Posts: 2,014
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From: Round Hill, Virginia
James, unless your 3.2 is making big HP I would go with the 1 5/8 headers over the 1 3/4. There are many factors that go into header choice and more often than not people go with the "bigger is better" approach and are not happy with the outcome.
A 2.7 with 46 Webers made 260 rwhp with a relatively mild cam. We recently did a 3.6 with factory 993 RSR intake and butterfly's that made 340 on an engine dyno with this exhaust, it could have made more but we didn't feel it necessary to push the motor since it is going into a 73 chassis.
I have included a pic of the complete system.
A 2.7 with 46 Webers made 260 rwhp with a relatively mild cam. We recently did a 3.6 with factory 993 RSR intake and butterfly's that made 340 on an engine dyno with this exhaust, it could have made more but we didn't feel it necessary to push the motor since it is going into a 73 chassis.
I have included a pic of the complete system.
Thread Starter
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Joined: Aug 2001
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From: Kent, CT
Chris, Thanks again for the great information and the picture! Great work! I have found a set of 1 5/8 headers which I think will work. I agree that 1 3/4 is too big. I was even wondering if the 1 5/8 ones would be too big as well on my stock motor. Anyway, who made those headers? They are very nice. I am a TIG welder so I appreciate the work. Also, what size Phase 9's would you recommend?
Cheers, James
Cheers, James
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Drifting
Joined: Nov 2001
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From: Round Hill, Virginia
That is the Phase 9 system. With the silencer installed they claim 85-95 db at 50'. I would be inclined to go with that system as it is the only one we have seen make real power on the dyno and be anywhere close to quiet. Go with the 1 5/8" header.
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From: La Jolla, CA
I have a JWE/Pete Weber setup just like the one in the picture Chris posted above, but in mild steel with 1-3/4" primaries. I have been under 92db @ 50' at our local venue with a 3.4 liter PMO-carbed engine.
I have been thinking about trying some 1-5/8" headers to get back some of my low end, though, if anyone is interested in this setup. It would be perfect for a 964 based 3.6-3.8L race motor. It is in great shape (5 hours on it) and all JetHot coated in flat black except for two spots where the coating was scraped or rubbed off. $1500 plus shipping would take it- headers, cross-chamber and mounting brackets, plus straight pipe setup after the Phase 9s for louder tracks.
TT
I have been thinking about trying some 1-5/8" headers to get back some of my low end, though, if anyone is interested in this setup. It would be perfect for a 964 based 3.6-3.8L race motor. It is in great shape (5 hours on it) and all JetHot coated in flat black except for two spots where the coating was scraped or rubbed off. $1500 plus shipping would take it- headers, cross-chamber and mounting brackets, plus straight pipe setup after the Phase 9s for louder tracks.
TT
