Fordmods Logo

3" exhaust with good mufflers 

 

Page 3 of 6 [ 88 posts ] Go to page Previous  1, 2, 3, 4, 5, 6  Next

 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Fri Sep 16, 2011 2:15 pm 
Stock as a Rock
Offline

Age: 51

Posts: 158

Joined: 25th Dec 2010

Ride: 1995 EF Falcon

Location: Adelaide
SA, Australia

skidder wrote:
chris sieclay wrote:
Let me whisper a little something in your ear.. its not 'just' the exhaust, its fairer to say that a engine that cant adjust its fuel delivery needs back pressure to perform.


Are you on crack?

I suppose it was inevitable that someone would bring up "back pressure".


can you read?.. no you dont need back pressure

its myth anyway theres no such thing

 

_________________

South Australia.. Heaps good.

Last edited by chris sieclay on Fri Sep 16, 2011 2:26 pm, edited 1 time in total.

Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Fri Sep 16, 2011 2:18 pm 
Getting Side Ways
Offline
User avatar

Age: 28

Posts: 2515

Joined: 27th Mar 2006

Gallery: 1 images

Ride: FG MkII Xr6t Ute

Location: Brisbane
QLD, Australia

You just said "needs" back pressure :|

Maybe it was just poorly worded. I just don't see the words "restriction" or "back pressure" as being conducive to explaining exhaust systems as they are never interpreted the right way.

 

_________________

EVL098 wrote:
Cramping in the hand from having it on your Wang for an excessive period of time is a definate con.
Seriously do people google "f**k up modifications for Fords owned by Jews" and get linked straight to this site nowadays?

AU,factory fitted tickford kit/IRS, t5,Sports ryder/KYB: gone.

Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Fri Sep 16, 2011 2:29 pm 
Stock as a Rock
Offline

Age: 51

Posts: 158

Joined: 25th Dec 2010

Ride: 1995 EF Falcon

Location: Adelaide
SA, Australia

skidder wrote:
You just said "needs" back pressure :|

Maybe it was just poorly worded. I just don't see the words "restriction" or "back pressure" as being conducive to explaining exhaust systems as they are never interpreted the right way.


yes i worded that way cause thats the first term people use, its a myth.

Totally agree with you skidder, i built headers for a major manufacturer here in adelaide for 8 years.

 

_________________

South Australia.. Heaps good.

Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Fri Sep 16, 2011 3:04 pm 
Getting Side Ways
Offline

Posts: 2410

Joined: 4th Sep 2006

Location: Sydney
NSW, Australia

Have u considered how much its going to cost you versus the gain your going to get???

Cheapest high flowing muffler would be Lukey

 

_________________

Wanted Either Capri/Cortina/XY/XW/XR/XT with tough V8 stroker engine, auto, 9inch, upgraded brakes etc[/SIZE][/size][/color]

Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Fri Sep 16, 2011 4:14 pm 
Stock as a Rock
Offline

Age: 26

Posts: 137

Joined: 8th Apr 2010

Ride: Dohc el futura, ea falcon

Location: horsham
VIC, Australia

i got a 3 inch on my na6 el for $550 with one muffler.. had to custom make the centre section and got the tale pipe off the shelf... sounds good but probs is a bit loud... project car anyway so dnt really care
Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Fri Sep 16, 2011 9:17 pm 
Smokin em up
Offline

Age: 26

Posts: 249

Joined: 18th Jan 2010

Ride: Ford EB GLI

Location: Morwell/Inverloch
VIC, Australia

I've got a full 3" defilippo exhaust with two mufflers for sale if your keen. Only done about 5,000k and was on my turbo EB.

 

_________________

EBT-747 -

Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Sun Sep 18, 2011 8:31 am 
Stock as a Rock
Offline

Age: 33

Posts: 100

Joined: 7th Feb 2009

Ride: EL Fairmont Ghia

Location: Gold Coast
QLD, Australia

tickford_6 wrote:
ELboy wrote:
tickford_6 wrote:
GeZza200 wrote:
its not overkill, I will show the next dyno sheet when a 3" system is on it.


Back to your original question, I think you'll just have to squeeze and as many mufflers under it as you can.


That doesn't make sense at all. Why fit 3" exhaust if your going to fit more mufflers to quieten it? It's actually mufflers that cause a restriction :roll:



Go away, learn about exhausts and then back and start posting. :roll:

Tha Cons wrote:
ELboy wrote:
Can you come up with one good reason why 3inch is overkill?


Um well first where talking about a NA Ford 4.0 I6 not some high performance turbo engine.

I'm not just some kid with no knowledge giving my opinion, i'm talking from years of research training and experience i've only been a fully qualified mechanic for 7yrs but have a lot of knowledge from working with guys that have 30+ years in the trade. I don't care what your dyno read out says, dyno's do not measure real world performance! They measure the amount of maximum power your engine makes at the rear wheels. So because a 3" inch system might make a little more power at max revs does not mean anything, do you constantly drive at max revs, is this a race or drag car or just your daily drive? If it is for a daily drive it is overkill and not to mention will sound terrible

Where did you hear that your 2.5" system is too restrictive? If anything it would be your mufflers causing a restriction not pipe diameter, a good section of straight pipe will flow around 115 CFM per inch of diameter.

Exhaust gas is hot and it's best to keep it hot throughout the exhaust system. Why? Cold air is dense air, and dense air is heavy air. An extremely large exhaust pipe will cause a slow exhaust flow because the gas cools and becomes heavier

Mass of air that the engine breathes in + mass of fuel = mass of exhaust gases. A 2.5" diameter is well suited to a 3984 cc engine that revs to only 6000rpm. Turbo or supercharged engine is total different story

The problem is exhaust shops are just fitters most do not know much at all and they will tell you fitting 3" system will improve performance.



^^^^^^^^ hit it right on

Same goes for you.

You have both just posted utter usless crap, and any one that reads it has just become ever so slightly stupider for it.

There is far more to it then I quite frankly have the patience to sit here and explain to people that currently have such a poor understanding of it.
There is plenty of good literature and practical experience to be found if you spend the time to look for it. ALL of it far better then you will learn from a few 50 year old mechanics that have 30 year old advice to give.

But to give you a head start on it all. The power is made by the headers, and that doesn't you jam a short 3 inch long collector on the end of the secondary pipes and call it a job done.
The rest of the exhausts job is ONLY to provide a means of removing the exhaust gases to a suitable location. That job needs to be done with ZERO restriction over the entire operating RPM.

If you want to fill in the blanks you need to do you're own research.[/quote]

Man your a total wanker tickford 6! So exhaust does not affect power its only the headers? Well i think you need to come back with some better knowledge
Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Sun Sep 18, 2011 8:52 am 
Stock as a Rock
Offline

Age: 33

Posts: 100

Joined: 7th Feb 2009

Ride: EL Fairmont Ghia

Location: Gold Coast
QLD, Australia

Tickford 6 i have met many people like you in the trade, total know-alls that apparently know everything and don't like taking advice from people that have more experience your what we call a total wanker. So you know more then a performance engine builder of over 30 years do you? i don't think so mate!

What's utter crap you wanker?

Most of what i wrote was out of one of my exhaust text book, so it is fact.

If what your saying is true then we wouldn't need an exhaust, how untrue is that have you tried driving a 4.0 falcon with just headers and no exhaust? Well i have, car was so gutless barely made it up a hill
Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Sun Sep 18, 2011 9:04 am 
Stock as a Rock
Offline

Age: 33

Posts: 100

Joined: 7th Feb 2009

Ride: EL Fairmont Ghia

Location: Gold Coast
QLD, Australia

67RCE wrote:
ELboy wrote:
Without being forced induction a 3" system is just over kill. I've had major head work done to my 95DT head by Gilbert's P & A Cylinder Head Services, these guys really know the EA-AU 3.9/4.0. I've tried like every off shelf system made for EL 4.0, it's taken me years to make a system that flows very well but also sounds good. I running 4480 pacemaker headers 2.5" redback high flow cat, 2.5" mandrel bent pipe into hotdog just before diff then 2.5" mandrel bent tail pipe with a mercury 2.5" high flow muffler cut in. This system sounds nothing like an off shelf sports system, it has no drone at all it is actually pretty quiet highway driving. Has a real nice lumpy growl not that horrid droning bark sound most falcons with sports exhaust have, sounds really good echoing off buildings even turns heads

Real world experiences have prove what you are saying is wrong. There are 2x13 second N/A 6cyl E Series in QLD running 3" exhausts. One of the cars has a head built by Gilberts. I'm going with tickford_6 AND CVE on this one.


Well an NA falcon running 13's is more then likely not a roadworthy car. I'm talking about your daily drive a car that is driven on the streets not a drag car. Yes if you built a hardcore engine that does 13sec 1/4 mile then 3" exhaust is not overkill at all but don't twist my words, fitting a 3" exhaust to a daily driven falcon is just stupid it will just end up annoying your neighbours
Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Sun Sep 18, 2011 11:32 am 
Oompa Loompa
Offline

Age: 27

Posts: 24

Joined: 27th Aug 2011

Gallery: 2 images

Ride: '06 MKII FmG

Location: South East, Melbourne
VIC, Australia

Who needs fight music when you can just wake up on a nice Sunday morning and jump on FordMods.

I wish I knew more about exhausts n sh*t.

I wouldn't wanna say something and then get reamed for it.

Anyway OP, I say get a million Varex mufflers and join them together. That way you can adjust every single inch of your entire exhaust.. it will be very very long, but put a nice tip on it and it should be fine, mate. Giggity.

Greggy B

P.S.

Definition of REAM. transitive verb. 1. a: to widen the opening of (a hole)
Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Sun Sep 18, 2011 12:02 pm 
Stock as a Rock
Offline

Age: 51

Posts: 158

Joined: 25th Dec 2010

Ride: 1995 EF Falcon

Location: Adelaide
SA, Australia

ELboy wrote:
Tickford 6 i have met many people like you in the trade, total know-alls that apparently know everything and don't like taking advice from people that have more experience your what we call a total wanker. So you know more then a performance engine builder of over 30 years do you? i don't think so mate!

What's utter crap you wanker?

Most of what i wrote was out of one of my exhaust text book, so it is fact.

If what your saying is true then we wouldn't need an exhaust, how untrue is that have you tried driving a 4.0 falcon with just headers and no exhaust? Well i have, car was so gutless barely made it up a hill


You've taken Tickford 6 out of context.. and he does know what he's talking about.

 

_________________

South Australia.. Heaps good.

Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Sun Sep 18, 2011 2:14 pm 
Getting Side Ways
Offline

Posts: 6449

Joined: 11th Nov 2004

ELboy wrote:
Tickford 6 i have met many people like you in the trade, total know-alls that apparently know everything and don't like taking advice from people that have more experience your what we call a total wanker. So you know more then a performance engine builder of over 30 years do you? i don't think so mate!

What's utter crap you wanker?

Most of what i wrote was out of one of my exhaust text book, so it is fact.


No need for name calling.

The difference between you and me is I go by personal first hand experience. You go by reading texts books and believing anything that other bloke tells you. ( he's gone from a mechanic on your other post to a 'performance engine builder' in this post????????

You've also come at this whole thread from the wrong angle.
Right from the start it was a thread about a heavily worked engine where the current 2.5 inch system had already been proven to be holding the engine back.
You then realised that after a few days and have now tried to back flip.

ELboy wrote:
Well an NA falcon running 13's is more then likely not a roadworthy car. I'm talking about your daily drive a car that is driven on the streets not a drag car. Yes if you built a hardcore engine that does 13sec 1/4 mile then 3" exhaust is not overkill at all but don't twist my words, fitting a 3" exhaust to a daily driven falcon is just stupid it will just end up annoying your neighbours



Quote:
If what your saying is true then we wouldn't need an exhaust, how untrue is that have you tried driving a 4.0 falcon with just headers and no exhaust? Well i have, car was so gutless barely made it up a hill


Again overly simplistic. ALL current off the shelf headers are a compromised design for fitment to stock to lightly modified road cars. That obviously includes the full length exhaust system.

and just to quote my self..
Quote:
The power is made by the headers, and that doesn't you jam a short 3 inch long collector on the end of the secondary pipes and call it a job done.


What that means is pulling the exhaust system off a car with ANY current off the shelf brand name header does NOT equal a properly designed system that will make good power.
What it does mean is that if you talk to some like Burns stainless and give them ALL of the engine info they need they will design a header that works for your engine.

Do a search in here for all the times people have asked about what size exhaust they should get. %99 of the time I have recommended an off the shelf 2.5inch system of what ever brand is the cheapest in persons area. The other %1 has been times like this where the engine will benefit from a larger system.


I have been modifying cars and building engines for probably 12 or so years now, The single biggest thing i've learned is that you don't ask your 'common performance engine builder' about any thing other then SBC and SBF engines. ask any of them about a 6cyl engine and the first thing that happens is their brain switches off and goes into 'those things don't make power mode' and they sprout bull s**t like 'those things only need a 2.5inch exhaust'.

 

_________________

PERMANENTLY BANNED

Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Sun Sep 18, 2011 2:44 pm 
Getting Side Ways
Offline

Age: 29

Posts: 2563

Joined: 19th Feb 2007

Gallery: 21 images

Ride: 98 EL Futura

Power: 199 rwkw

Location: Lilydale
VIC, Australia

CVE will be making the 3" exhaust for me, it will have a before and after dyno as well. Here is how it sounds at the moment.

http://www.youtube.com/watch?v=dizIKbbDQC4

 

_________________

EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come

Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Sun Sep 18, 2011 4:50 pm 
Getting Side Ways
Offline
User avatar

Age: 28

Posts: 2477

Joined: 10th Mar 2007

Gallery: 27 images

Ride: 1995 EF Fairmont

Location: Auckland
New Zealand

Will be good to see how much better it goes with the 3" system, even better to see another NA i6 in the 13sec bracket hopefully.

Gotta love the lump to that idle with the cam, sounds mint Gezza!!

 

_________________

Money Talks, But All Mine Ever Says Is Goodbye
EF Fairmont - EFF111 Build Thread

Top
 Profile  
 
 
 Post subject: Re: 3" exhaust with good mufflers
Posted: Sun Sep 18, 2011 5:02 pm 
Getting Side Ways
Offline
User avatar

Age: 25

Posts: 4599

Joined: 30th Aug 2010

Ride: BF XR6,

Location: NEWCASTLE
NSW, Australia

KWIKXR wrote:

Gotta love the lump to that idle with the cam, sounds mint Gezza!!

+1 for that grumpy as f**k sound, sounds really good for a 6

 

_________________

BF XR6
xr8 snorkel,typhoon lower snorkel,territory intake pipe,20% underdrive kit,pacemaker extractors,high flow cat,xforce exhaust,t56 conversion hd turbo clutch/ flywheel,m86 3.45 lsd,custom tune187.1rwkw as an auto

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 3 of 6  [ 88 posts ]  Go to page Previous  1, 2, 3, 4, 5, 6  Next

Who is online

Users browsing this forum: Alexa [Bot] and 41 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Mon Dec 11, 2017 5:11 pm All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names