Exhausted - Page 2

Zetec20 · 04-09-2006, 05:33 PM

also i'd heat wrap the entire intake pipe and the extractors (when i get them done) to keep the temperatures all good

melbzetec · 04-09-2006, 05:43 PM

Or get the headers ceramic coated. Wrapping can trap moisture and lead to early corrosion on the headers. Also looks better!!! A little extra bling

Pieoter · 04-09-2006, 05:52 PM

Wrapping the intake pipe would be useless. You arn't passing over anything hot.

But melbzetec is right cermaic coating is the way to go

More revs · 04-09-2006, 10:02 PM

Outstanding, thanks guys.

I'm determined to get 180HP for the simple joy of saying.. "coz I can" to a mate who spent many $1000's on a 2l Ford Pinto to get close to 180HP.

I wonder what the actual butterfly measures, would be great if it was 60mm, no need to change it then.

Some silicon elbows and SS tubing and a pod.

Oh and possibly an ECU reflash.. Fairly sure this should be done too.

Zetec20 · 04-09-2006, 10:16 PM

Quote:

Originally Posted by Pieoter

Wrapping the intake pipe would be useless. You arn't passing over anything hot.

But melbzetec is right cermaic coating is the way to go

yeah but ceramic is expensive, plus the whole engine bay heats up a shi tload all the time so it would make sense to protect it, or vent the bonnet....

05-09-2006, 10:11 AM

Quote:

Originally Posted by More revs

Outstanding, thanks guys.

I'm determined to get 180HP for the simple joy of saying.. "coz I can" to a mate who spent many $1000's on a 2l Ford Pinto to get close to 180HP.

I wonder what the actual butterfly measures, would be great if it was 60mm, no need to change it then.

Some silicon elbows and SS tubing and a pod.

Oh and possibly an ECU reflash.. Fairly sure this should be done too.

Butterfly does measure 60mm(has a 5mm lip around the circumferance), but Id look at grinding a bit of the lip where it goes from 70mm to 60mm, to make it more streamlined. Likewise for the otherside to reduce drag.

Id upgrade the fuel pump as well. From what I can tell the standard pump starves the engine in certain situations. (ie on startup and driving up hills). Injectors may be a possibility as well (what comes standard?)

If you are going to do a custom ECU reflash anyway, you may as well look at the quad TB setup anyways and reprogram the intake module of the flash.

A 30kw gain from just doing primarily intake and exhaust (and possibly fuel) is a pretty healthy jump, especially for a 4cyl.

Does anyone know the compression ratio on these things? Would it be able to handle a shave?

05-09-2006, 10:15 AM

Quote:

Originally Posted by Pieoter

Wrapping the intake pipe would be useless. You arn't passing over anything hot.

But melbzetec is right cermaic coating is the way to go

You should have felt my airbox last Wed night at WSID. Anything you can do for Focus to get rid of engine bay heat will be a good thing for the intake.

Zetec20 · 05-09-2006, 10:22 AM

Quote:

Originally Posted by BlackLS

If you are going to do a custom ECU reflash anyway, you may as well look at the quad TB setup anyways and reprogram the intake module of the flash.

Just out of curiousity, how much effort and $$$ would a quad TB setup cost? would it be possible to adapt the quad TB off the sr20det from the pulsar gtir?

05-09-2006, 10:25 AM

Quote:

Originally Posted by More revs

Outstanding, thanks guys.

I'm determined to get 180HP...

This will get us better times than the Corolla Sportivo times of a mid 15 sec pass. At more usable RPMs as well. Pretty good for just DOHC, no VVTLiiciiiteiikiciiiiiri or something like that

melbzetec · 05-09-2006, 10:29 AM

Quote:

Originally Posted by BlackLS

You should have felt my airbox last Wed night at WSID. Anything you can do for Focus to get rid of engine bay heat will be a good thing for the intake.

And ceramic coating reduces under bonnet temperature.

I'm sure the cold air feed on my Pipercross Viper is carbon impregnated (or similar) to shield against under bonnet temperatures. The filter housing certainly is carbon fibre for this reason.

NB (On an LR Focus)

Zetec20 · 05-09-2006, 10:36 AM

Quote:

Originally Posted by melbzetec

carbon impregnated

sorry that's just the funniest thing i've heard in a while.... any idea of the costing of ceramic coating?

melbzetec · 05-09-2006, 10:46 AM

Quote:

Originally Posted by Zetec20

sorry that's just the funniest thing i've heard in a while.... any idea of the costing of ceramic coating?

If that's the funniest thing you've heard in a while....you need to get out more!!!!

I think ceramic coating will cost you about $150-200 on a existing header

These are the people to talk to:

http://www.jet-hot.com.au..

4 cylinder shouldn't be too hard.

My Ford Racing long tube header is costing me an extra US$150 for the ceramic coat- but that is straight from the manufacturer.

05-09-2006, 10:56 AM

Quote:

Originally Posted by Zetec20

Just out of curiousity, how much effort and $$$ would a quad TB setup cost? would it be possible to adapt the quad TB off the sr20det from the pulsar gtir?

Depends on ECU parameters. If you can get away with the ecu using only the Oxygen sensor to determine the fuel mixture then a mechanical throttle setup (including quadies) will be fine.

If there is a MAF sensor somewhere along the line, you may need to compensate for this. (Perhaps a log-style manifold which fits tightly over the quad throttles, and have the maf on the intake part of the log.

Also, you'll need to work out a way for the Accelerator cable to be cable again or somehow adapting the existing throttle butterfly controller to electronically run the 4 mechanical butterflies. By adapting I mean butchering up

melbzetec · 05-09-2006, 11:10 AM

This is an interesting crowd. I think they make some of their Alfa kits for the 2.0 litre duratec
http://www.webcon.co.uk/
http://www.webcon.co.uk/alpha/AlphaPlusKits.htm

Prepare to pay though!

05-09-2006, 11:15 AM

They look very interesting. What worries me is how will the standard ECU behave because of this?

Zetec20 · 05-09-2006, 11:15 AM

AHA! this looks good... http://www.webcon.co.uk/Downloads/Duratec%20Flyer.pdf

Pieoter · 05-09-2006, 11:52 AM

I don't know the injector size on the stock focus but the Fiesta ST which uses the same engine will get very close 200HP with Exhuast, Intake and ECU tune.

The reason the duratec is so responsive to mods is becuase of the head. It has MASSIVE valves standard because of that it flows like crazy. Cosworth keep the same OE valves size for all there engines (making 260hp+)

It fit quad throttles (Cosworth ones will set you back 3g not fitted) will require alot of work. You can resort back to a mechanical cable or modify the electronic control from a stock car. You will also need a new fuel rail, injectors and all the assosicated fuel mods.

Go with the simple exhaust, intake and custom ECU tune and see how you go.

05-09-2006, 12:07 PM

Pieotor, could cams with more lift benifit by any chance?

Pieoter · 05-09-2006, 12:21 PM

Of course, Cams will more lift and/or duration will create more power but if you go too far you will start losing power down low. The limiting factor for lift is the relationship between duration and lift.

Cosworth don't even have cams for anything under 200hp. If you get some timid custom grinds you can get some nice gain across the boards with breathing mods and could raise the rev limit.

05-09-2006, 12:40 PM

It doesn't have any torque low down until about 2500 anyways lol.

For the duratec, most benefit is probably around the 3-7000rpm range.

FocusLX06 · 05-09-2006, 06:21 PM

Ok cars aren't my speciality, what is a "CAT back"? Help a rookie out

Pieoter · 05-09-2006, 06:53 PM

Cat back is an exhaust from the catalitic converter back. Your replacing most of the piping and the mufflers and resonators.

photn · 05-09-2006, 07:55 PM

in case you dont know what a cat is(catalytic Conveter)...which pie should of explained its a device that sits just outside the other end of your exhaust manifold....it reduces noise and emmissions......all vehicles in australia are required to have one......legally.....there are 2 mufflers on the exhaust system after the Cat...these mufflers reduce noise and make the car quite.....replacing these with sports mufflers allows the air to flow more free'er and sound better....also a resonator will make more sound....hence you get a sportier sound....thats a Cat back system....

Pieoter · 06-09-2006, 12:25 AM

To further complicate things
Catalitic Converter: A device usually made from a ceramic honeycomb that primary function is the reduction of vehicle emissions via chemical reations (NOx to nitrogen and oxygen. Carbon monoxide to Carbon dioxide. Unbrunt hydrocarbon to carbon dioxide and water). Most new vehicles come with multiple cats and the new fab is to have them cast into the exhuast manifold.

Mufflers: Are there to reduce noise. Work on the concept of destruction interference to reduce noise levels. Packed muffler are packed with sound absording material to reduce noise level and produce different sounds. Don't be afraid to add an next straight through muffler to your exhaust if yours is too loud (You don't need to keep the same number as the stock car. You can have more or less its up to you). A straight through will reduce sound levels and pose almost no restriction to the exhuast gases. Different styles produce different sounds, talk to your exhaust guy about the sound you want and he/she will be able to help you out.

Resonator: These are tuned to a specific length and volume to cancel out sound frequencies. Again work via destructive interference but a resonator has a narrower muffling frequency. Great to add if you are after a specific sound or have a drone.

FocusLX06 · 06-09-2006, 06:09 PM

So with a cat back system you leave the cat converter in and replace the rest of the exhaust?

melbzetec · 06-09-2006, 06:33 PM

That's absolutely correct. You replace from the "cat" back to the rear exhaust pipe

On LR focus (not sure about LS) "catback" is also a misnomer. After the catalytic converter, there is also a flexpipe (allows for engine movement). Most "catbacks" actually replace the exhaust sytem from the flexpipe back.

But certainly when you see the term "catback", the catalytic converter stays where it is