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XES-PAK
26-08-2007, 04:43 PM
Just wondering what would be a good set of extractors for my AU ute.
I was thinking of a set of Pacemaker PH4480 or PH4499
and what would be the the advantages of either one.

PH 4499(left) PH4480(right)

sbutler
26-08-2007, 06:16 PM
Im no header expert, but it depends on what your looking to gain.
If its a top end [above 3000 to 6000rpm] Or you want torque for pulling power at 1000 to 5000rpm
I like the look of the 4499s, Ask the pacemaker what the differencers are & what will it do..

Falc'man
26-08-2007, 06:56 PM
Hi mate,
Hopefully my little story can help you decide...
I asked the muffler man to fit the 4495 (equivalent to your 4480) due to popular demand from those on another forum. The guy installed the 4490's instead (equivalent to your 4499). I told him he put the wrong ones on and that he should change them to 4495. So after a week, he did so.
The good thing that came out of this is I had driven the 4490's for a week and it gave me the opportunity to compare them back to back.

When the 4490's were installed I was very happy with there performance, from 2000rpm right through to the redline there was a major increase in power.

The 4495's, also known as competition headers, are exactly that... for the 1/4 mile. Their lack of power under 3000rpm was a complete joke... I'm willing to say even worse than stock. But, when they hit 4000rpm there's a huge amount of power... but only for 2000rpm...

So if your planning to mod your engine for the track ie, cams, head porting and polishing, higher compression, low diff gears etc... then go for the 4480's, they're better up top than the 4499's

Looking at your signature though, if you're planning to keep it that way, you should use the 4499's, you won't regret it.

What did I do? I went back after one day with the 4495's and had the 4490's reinstalled... And drove home with a smile...

XES-PAK
29-08-2007, 09:06 PM
Thanks for that Falc'man I thought that the 4499's would be better for low
down torque than the 4480's.

Falc'man
30-08-2007, 07:12 PM
Thanks for that Falc'man I thought that the 4499's would be better for low
down torque than the 4480's.

Why did you think that? The reason wouldn't have anything to do with speaking to a sales guy at Pacemaker would it?
LI only say that because last night I met a bloke at the dragstrip. He asked me what I had and told 4490's. Also told him my story. He was really upset because the guy at Pacemaker told him the 4495 comp headers were better for bottom end torque and so he went ahead and ordered them along with HPC coating... completely misinformed by the manufacturer itself!!! I hope they're not telling people that just because they making more money out of them.

XES-PAK
30-08-2007, 09:48 PM
na I haven't talked to a sales bloke, I was thinking that the 4499's would have better low down torque that the 4480's cause the 4480's are designed for racing so topend power rather than low down torque..

Krisisdog
30-08-2007, 10:31 PM
The 4480s are tuned length, and, from what I've heard, have it all over the 4499s from idle to redline. Supposedly around a 5rwkw gain over the 4499s across the entire rev range.
The comps do cost a lot more than the std ones though dont they? like a couple of hundred $$$.

My extractors look identical to the 4499s and I'm happy with them. Down low (<2000rpm its lineball I guess, though I can cruise in 5th at 55kmhr happily now) theres not much diff to stock, but yeh, upwards from there its alll gooood.

Falc'man
30-08-2007, 11:42 PM
The 4480s are tuned length, and, from what I've heard, have it all over the 4499s from idle to redline. Supposedly around a 5rwkw gain over the 4499s across the entire rev range.
The comps do cost a lot more than the std ones though dont they? like a couple of hundred $$$.

My extractors look identical to the 4499s and I'm happy with them. Down low (<2000rpm its lineball I guess, though I can cruise in 5th at 55kmhr happily now) theres not much diff to stock, but yeh, upwards from there its alll gooood.

In that case I'd certainly get opinions other than mine. I've only based what I've said by the amount of secondaries, 4499 (4490) having two rather than three as per the 4480's (4495). I could be wrong XES-PAK so do a little more research, I don't want to give you bumsteer mate.

Cheers.

buickman
02-09-2007, 07:39 PM
I had the ph4499 on my old AU VCT Ghia with red back system was happy with them and at a dyno day there was only about 4rwk difference with a AU XR6 VCT fitted with the ph4480 hardly noticable. Plus the PH4499 look neater in the engine bay. But its your choice in the end.
http://i47.photobucket.com/albums/f171/ioannid/Picture018.jpg

buickman
02-09-2007, 09:09 PM
A copy of a chart from the Pacemaker site. If you want to run LPG PH4480's will not fit.


PaceMaker PH4499

FALCON | EA-EB-ED-EF-EL-AU | XG-XH-AU UTES
FAIRLANE | NA-NC-NF-NL
3.9-4.0 LITRE | Manual & Automatic | TRI-Y Design



P/Steering:

Yes Gasket:
DSF 61
Air Con:

Yes Primary Pipe:
1 ⅝"
(41mm)
Oxy Sen:

Yes Secondary Pipe:
1 ⅞"
(48mm)
E.G.R:

N/A Outlet (flanged):
2 "
(63mm)
Y Branch:

N/A Fitting Time:
1 Hrs

Note: Will fit AU column change auto.


--------------------------------------------------------------------------------
Pacemaker PH4480


PH 4480 - COMPETITION HEADER
FALCON | EA-EB-ED-EF-EL-AU | XH-AU UTES
FAIRLANE | NA-NC-NF-NL
3.9-4.0 LITRE | Manual & Automatic | TRI-Y Design



P/Steering:

Yes Gasket:
DSF 61
Air Con:

Yes Primary Pipe:
1 ⅝"
(41mm)
Oxy Sen:

Yes Secondary Pipe:
1 "
(44mm)
E.G.R:

N/A Outlet (flanged):
2 "
(63mm)
Y Branch:

N/A Fitting Time:
1 Hrs

Note: Will not fit with Factory LPG. Refer PH4499.
Will not fit XG ute.

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Cobba
03-09-2007, 03:22 PM
When I got my extractors I went for the 4499 (or eqivalent), mainly because that was what was recommended by the exhaust retailer. The story was that the 4499 was better for normal road driving and as the name suggested, the 4480 was better for on the track where the car would be kept higher in the rev range. While I may not have compared the two, I have been happy with the end result.