Extractors not a go for fords...

[Hybrid34]

Went to my mechanic last night and we were talking about cars (Duuurr), apparenlty he was telling me that his mate put extractors on this falcon and he acutaly lost power, i find it hard to belive but he was explaining and tell me about it, the mainifold for a ford is about as good as it gets, and making it breathe to much via extractors to much heat is generated due to the pipes, Just something to think about, ....It was about 15- 20hp loss i think from memory, anyone else heard of this????

[EDXR6T]

Sounds like a load of crap.

[EA2BA]

Possibly he was talking about an XF, and I have heard plenty of stories in relation to that, but also heard/seen plenty of proof to say its not true.

But on an EA onwards it will give you more power, I have not heard of anyone losing power over a stock manifold at all.

EDIT: Did his mate who put extractors on also put a stupid 3" exhaust as well so he had no back pressure what so ever, that will kill power and could cause the problem described.

[DEVL-XR]

Yeah I find this hard to beleive. Like Jason said maybe he had a 3" exhaust too which has already been explained.

[mark_TD]

I just put my Brand New 2.5" sports on the EB (daily) with Hi Tech extractors and I have noticed a huge increase in power. I was keeping up with Grechie last night. The only thing that I have noticed is that since I have put it on my average fuel/100kms has gone from 7.6litres to 11.2litres

[EA2BA]

Originally Posted by mark_TD

I just put my Brand New 2.5" sports on the EB daily with Hi Tech extractors and I have noticed a huge increase in power. I was keeping up with Grechie last night. The only thing that I have noticed is that since I have put it on my average fuel/100kms has gone from 7.6litres to 11.2litres

I think thats just a right foot problem not exactly a direct result as such

[BigDaddy]

You gotta be able to hear it or else there is no point putting the system on the car!! lol

[Christiaan]

Extractors will always give more power as long as the car:

- Has a suitable sized exhaust
- Is tuned properly
- Has no intake restriction.

The better an engine flows (intake air + combustion + exhaust gas), the more potential there is for power, with big cams, bigger exhaust valves, more compression, etc.

[Quasi]

Originally Posted by Hybrid34

Went to my mechanic last night and we were talking about cars (Duuurr), apparenlty he was telling me that his mate put extractors on this falcon and he acutaly lost power, i find it hard to belive but he was explaining and tell me about it, the mainifold for a ford is about as good as it gets, and making it breathe to much via extractors to much heat is generated due to the pipes, Just something to think about, ....It was about 15- 20hp loss i think from memory, anyone else heard of this????

B-U-L-L-S-H-I-T!

Either his mate is lying to him, or his mate (or whoever fitted them) has by some miracle cocked it up and has a serious vacuum leak, or some other reason, but if he is saying this he needs to be smacked up the back of the head.

[Hybrid34]

Yeah look im not putting down extractors for one second, but the mech. was telling me about it how he took him n his friend down to the dyno and all, maby somthing wrong witht the car:S?, oh by the way have you guys heard of this speical tape that you wrap around the exctractors so that the heat doesn't get in your engine bay? its around $50 for it, and apparnlty really affective.

[Sundeep]

Extractors are definitely crap.

Anyone with JMM Streetfighters feel free to PM me I will come get rid of yours they're useless.

Sundeep

[Hybrid34]

extractors are crap? why you say this Sundeep?

[EA2BA]

The tape does work but it can also cause your extractors to get too hot inside and crack or rot essentially, getting them coated like jethot coating is a much better idea.

[mark_TD]

Originally Posted by Hybrid34

Yeah look im not putting down extractors for one second, but the mech. was telling me about it how he took him n his friend down to the dyno and all, maby somthing wrong witht the car:S?, oh by the way have you guys heard of this speical tape that you wrap around the exctractors so that the heat doesn't get in your engine bay? its around $50 for it, and apparnlty really affective.

I was told yesterday when I got my exhaust fitted that the heatproof tape is not good. I was told that with everyday cars the tape shouldn't be used as it burns out the extractors. It should be used for more high powered cars. Does this sound right to anyone? I had the tape on mine so I took it off

[Rmyers]

Originally Posted by EA2BA

The tape does work but it can also cause your extractors to get too hot inside and crack or rot essentially, getting them coated like jethot coating is a much better idea.

Plus that tape looks ugly as...

[mark_TD]

Originally Posted by EA2BA

I think thats just a right foot problem not exactly a direct result as such

LOL. I don't know. I was driving normal on the freeway and the INST LITRES was 9-10, usually it sits at 6-7.

Originally Posted by EA2BA

The tape does work but it can also cause your extractors to get too hot inside and crack or rot essentially, getting them coated like jethot coating is a much better idea.

There is the answer I was after. We must have posted at the same time LOL

[Quasi]

Originally Posted by Hybrid34

oh by the way have you guys heard of this speical tape that you wrap around the exctractors so that the heat doesn't get in your engine bay? its around $50 for it, and apparnlty really affective.

Thermal wrap, yeah been around for years mate.....mostly used on drag cars and that sort of thing. It does a descent job, but not really necessary on normal street cars (unless you also have a 7 foot rear wing and neons underneath ).

[ratman]

Extractors aren't a magic power pill BUT a well considered aftermarket exhaust will always be better than what it came from the factory with (on a Falcon.) There is such a thing as too big an exhaust that affects back pressure but I'd be surprised if extractors were such a negative on their own.

[frd_crzer]

that is bullshit then y did they put extrators an some cars from factory like mark_td LTD its got factory extractors

[MightyXR6Turbo]

Originally Posted by frd_crzer

that is bullshit then y did they put extrators an some cars from factory like mark_td LTD its got factory extractors

Errr.. those pressbent pieces of garbage that E-Series Windsor motors have aren't what you'd call "extractors", they are a terrible exhaust manifold.

[webby_191189]

Originally Posted by Quasi

Thermal wrap, yeah been around for years mate.....mostly used on drag cars and that sort of thing. It does a descent job, but not really necessary on normal street cars (unless you also have a 7 foot rear wing and neons underneath ).

I belive the proper name for that is RICE

[Allen]

Originally Posted by MightyXR6Turbo

Errr.. those pressbent pieces of garbage that E-Series Windsor motors have aren't what you'd call "extractors", they are a terrible exhaust manifold.

Agreed! press bent pieces of crap :P

Any proper tuned length exhaust manifold will be far better than any cast iron manifold.

The lengths and diameters of the primary and secondary pipes have to be carefully chosen to suit the pulse of the exhaust, to give you the optimum amount of back pressure.

A lot of people buy a set of extractors off the shelf, thinking that it will do wonders... Sure lots of R&D have gone into them, but they aren't tailored to your individual engine...

[burkie_21]

thats true, my genie system cost around $2500, makes it sound unreal. glad i didn't pay for it

[Rollin]

As others have said, the mechanic had no clue. First dyno was probably done at JMM and the 'after' dyno was probably done somewhere accurate...

Also, heat tape is bad if you want any kind of life from your exhaust - the metal gets too hot, cools down too fast, gets brittle and then cracks.

Hybrid: Sundeep = sarcasm

[Hybrid34]

Hybrid: Sundeep = sarcasm
haha, so outta all of this the mech i was talking to could be right and not bull shittin?

[gngtho]

I had pacemakers on mine, and found that the car got slugish with better noise, and alot of heat, changed to factory man, with a nice exhaust and its much better, and less fuel is used.

[JC]

Originally Posted by Hybrid34

Hybrid: Sundeep = sarcasm
haha, so outta all of this the mech i was talking to could be right and not bull shittin?

Um, no. The only car I know of that lost power when extractors were fitted was my AU1 XR6 VCT. But it gained around 10% torque, and for that it dropped 1rwkw peak power (still better power thorough the rev range though). It's torque that gets you moving anyway.

Extractors will beat a cast manifold each and every time.

[JC]

Originally Posted by gngtho

I had pacemakers on mine, and found that the car got slugish with better noise, and alot of heat, changed to factory man, with a nice exhaust and its much better, and less fuel is used.

Sounds like a manifold leak to me, rather than an actual problem with the extractors. How can a restrictive system be better than a free flowing system? It can't.

[Rollin]

Hybrid: Sundeep = sarcasm
haha, so outta all of this the mech i was talking to could be right and not bull shittin?

No....sundeep said that extractors were crap and specificly stated he would relieve anyone of their JMM streetfighters if they so desired because he wants a set...it was a joke.

Extractors > cast iron