genies, hm or paccies

sprjenkins · 02-08-2006, 05:43 PM

Yeah i was wondering if anyone had genies or hm headers. my mate from ford reckons these are the go but how do they stack up?

Casper · 02-08-2006, 05:52 PM

Have a look around all the cars and exhausts. Most are running Pacies and those that arnt... probably 50% wish they were. I ditched JMM race headers for 4480 paccies and I'm glad I did.. need I say more?

stiddy · 02-08-2006, 05:53 PM

Mate of mine had genies on his car, I had pacemakers on my old car, and I dont know much about HM headers..
But paccie comps are the pick of the bunch.. most people will tell you that.

sprjenkins · 02-08-2006, 06:06 PM

how much does a set of paccie comps cost?

bArNsY · 02-08-2006, 06:14 PM

check out egay

sprjenkins · 02-08-2006, 06:20 PM

ok so $424 to buy them how much to fit them

bodes-sh · 02-08-2006, 07:10 PM

^^nothing if you do it yourself, probably anything up to 100+ depending on where you are and how much they charge

EFFalcon · 03-08-2006, 01:56 AM

I'm not trying to have a go Casper, i'm simply curious as to how your opinion could have changed so much.

Quote:

Originally Posted by Casper

As for the 4480 pacies, theres been a few with them (including you) that never saw any significant results from them as is usually expected when fitting extractors.
I personally do not think they work very well, if at all, with the VCT engine as far as performance goes.
There is, however, a new twist to this which I am unsure how it effects the results.
All the VCT's I'm aware of that had the 4480 pacies were series1. On a series2 the results may be a little different (although I expect not) as I suspect there is a slight running change on the VCT head between models.
There appears to be a flaw in the Series1 head design that has dropped its compression ratio slightly. This seems to have been fixed in the AU2/3 VCT head.
I have no proof of this yet, just speculation, however I will have my hands on a VCT Series2 head shortly....and answers will be found.

Was there ever answers found, especially since now you have 4480's?

blackers10 · 03-08-2006, 02:36 AM

HM headers are used on HSVs.. unsure what else they are used on..
we sell them at supercheap auto
ask for them at the spare parts counter.

camerooch · 03-08-2006, 09:27 AM

HM Headers do a lot of research and development before they release any products.
Sometimes this means other manufacturers have their products out first, but at least you know HM headers will release something that will give you great performance.
(The give a 10 Year warranty on their headers too !!)

ClassicAU · 03-08-2006, 09:37 AM

i have also noticed that the concensus seems to be with the PH4480's. what i would like to know is though, if i had them on my car would i need to rev the guts out of it to get to the power? i want to change the exhaust soon, but i would rather low end torque than power higher up, but i have heard the competition headers are designed to be revved?

camerooch · 03-08-2006, 10:09 AM

That's where the HM's come out in front IMO.
Great low and midrange torque where you can use it, not just top-end where some other headers make their power.
You will pick up about 8-10 KW.

nat_daly · 03-08-2006, 10:30 AM

what about the pacemaker 4499's then? would they make better power through the midrange? people that have or have ahd pacemaker 4480's, what rpm range did these extractors use? and if anyone has or has had 4499's>the same question directed at you also

Futura01 · 03-08-2006, 10:40 AM

very simple pacies are the go !!!
4499 - for mild engines
comps - for worked heads
Simple as that . when you overkill on exhaust you loose performance

Casper · 03-08-2006, 10:58 AM

Quote:

Originally Posted by EFFalcon

I'm not trying to have a go Casper, i'm simply curious as to how your opinion could have changed so much.

Was there ever answers found, especially since now you have 4480's?

I never got a definitive answer to the head issue unfortunatly. Since then it has also been found that, for some weird reason, the AU1 heads "seem" to flow better on average than the AU2 or AU3 heads.
All this basically means that, regardless of what Ford say, there is enough annicdotal evidence to say that there is most certainly something different between series 1 I6 heads and the series 2/3 heads.

As for the Pacemaker 4480's now working for VCT's, thats a simple answer. Pacemaker saw there was an issue and changed both the shape and pipe diameter of the latest Comps.. problem solved.
Also, in honesty, my cars rev range and tune has also been greatly effected by the histall and edit, this too may have had an effect on header performance as well.

Casper · 03-08-2006, 11:02 AM

Quote:

Originally Posted by Futura01

very simple pacies are the go !!!
4499 - for mild engines
comps - for worked heads
Simple as that . when you overkill on exhaust you loose performance

Other way around actually. The 4480's are for mid range torque etc as they have the smaller secondaries.
The 4499's are bigger in the secondaries, flow more but lose lower rpm performance slightly.

Futura01 · 03-08-2006, 11:19 AM

Quote:

Originally Posted by Casper

Other way around actually. The 4480's are for mid range torque etc as they have the smaller secondaries.
The 4499's are bigger in the secondaries, flow more but lose lower rpm performance slightly.

really so infact 4499 would work better on worked motors???

2002auxr6 · 03-08-2006, 11:29 AM

Im getting the 4499 fitted on Monday for $400 new, not a bad price i think

bArNsY · 03-08-2006, 12:26 PM

Quote:

Originally Posted by camerooch

That's where the HM's come out in front IMO.
Great low and midrange torque where you can use it, not just top-end where some other headers make their power.
You will pick up about 8-10 KW.

So it would be fair to say that if I don't intend to do any work on a stock engine I am better off buying the HM over the Comp Pacemaker?

I believe that one of the companies make the same dimensions as the competition pacemakers without the premium price. I'll try and find the brand when I get a few quotes around town.

Is it possable to get an extractors guide thread similar to the pre-AU rims thread? Any thoughts?

Thanks
Adam

ClassicAU · 03-08-2006, 12:32 PM

Hi-Tech headders i think is the bargain brand that i can remember?

i think i might ask at my local exhaust place if i get a chance this weekend. i am after more low end torque and not to be loud. i actually heard that i can use 2 1/4 inch pipe mandrel bent to give better back pressure at a sacrifice of note (which i dont care about anyway) can anyone confirm this?

Perana · 03-08-2006, 12:37 PM

Quote:

Originally Posted by Casper

Other way around actually. The 4480's are for mid range torque etc as they have the smaller secondaries.
The 4499's are bigger in the secondaries, flow more but lose lower rpm performance slightly.

4480's do have 3 secondaires compared to 2 on the 4499's hence why they are smaller

Pic of 4480's
Pic of 4499's

buickman · 03-08-2006, 07:00 PM

Just a query I had the 4499 Pacemakers fitted to my VCT Ghia in 2001. I don't think there was a 4480 being manufactured by Pacemaker at that time other wise I would have had them fitted as i beleive they do give a slight increase in mid range but any good extractor & exhaust system gives a good increase over the stock manifolds.