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| azza |
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Got some competition pacies on my EF the other day and it hasnt really improved my power. It doesnt feel any faster. My engine internals are stock. Just wonderin if i would see the best potential from these extractors with some porting and larger cam,valvesprings....etc. im not keen on touching the bottom end yet coz thats wen the big dollars come in.
Also can anyone recomend a place in perth that does head porting
_________________ BA XR8 manual ute black |
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| twr7cx |
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Try a cam to boost low down power and that - Wade 1604 or something and Tickford ECU. Worked well for me.
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| KTASTRPHE |
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I cant remember the blokes name, but if you ring dim from prestige auto's in welshpool he can tell you the name of the guru in perth.
Not worth flowing your head if you arent going to upgrade your cam or adding forced air. |
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| Vic |
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AFAIK comp pacies are for competition engines that make power up high in the rev range.
_________________ 5.6L of carbon footprint. |
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| twr7cx |
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Vic wrote: AFAIK comp pacies are for competition engines that make power up high in the rev range.
Nah, there actually great for low down power increase. I thought it was for up high in the rev range, but I talked to a fair few exhaust shops and that, and they all reckoned that from the specs they'd be better down low and that. I'm not going to argue about it, as I don't know the details of why, just saying what I've been told, and I mean it didn't really matter to them weather they sold me the standards or the comps as they were still going to get paid for the labour to fit them and make profit off the hi flow cat regardless! |
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| Disco Frank |
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twr7cx wrote: Vic wrote: AFAIK comp pacies are for competition engines that make power up high in the rev range. Nah, there actually great for low down power increase. I thought it was for up high in the rev range, but I talked to a fair few exhaust shops and that, and they all reckoned that from the specs they'd be better down low and that. I'm not going to argue about it, as I don't know the details of why, just saying what I've been told, and I mean it didn't really matter to them weather they sold me the standards or the comps as they were still going to get paid for the labour to fit them and make profit off the hi flow cat regardless! hey tweedle dee tweedle dumb! vic is right the comp series pacies have larger primaries to boost torque and power high in the rev range were most "race" cars have the engines spinning not often that u want low down grunt in a race car
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| Lindsay |
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Quote: PH 4499
Prim. Pipe 1 5/8" 41mm Sec. Pipe 1 7/8" 48mm Outlet (flanged) 2 ½" 63mm TRI-Y Design Competition Header Falcon Part No. PH 4480 Prim. Pipe 1½ " 38mm Sec. Pipe 1 7/8¾" 44mm Outlet (flanged) 2 ½" 63mm TRI-Y Design Actually, the 4480s have a smaller diameter primaries and secondaries. Taken from the http://www.pacemaker.com.au/ford.htm#6Cyl web site. |
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| voxace |
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They are better all round really. The smaller diameter gives good down low performance, and the tuned length design is great for high rpm.
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| jonbays |
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voxace is right they use primary size and length to tune both ends of the powerband.
My guess is the JMM race series will give better low end (really long secondaries) but the pacies will rev out better. I don't know why they don't work for you azza but I am very happy with mine. I did a before and after dyno and no doubt they work. I think its posted up in my gallery |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
when i fitted the comp pacies to my car, the 1/4mile time droped from 15.5 to 15.2
they do work. maybe you where just expecting to much and feel let down by what you got???? |
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| voxace |
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Is the rest of your exhaust up to scratch?
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| twr7cx |
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Disco Frank wrote: hey tweedle dee tweedle dumb! Turns out I was right, aswell as Vic being right, and what I had been told was correct too, as Voxace said: Quote: The smaller diameter gives good down low performance, and the tuned length design is great for high rpm.
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| Disco Frank |
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twr7cx wrote: Disco Frank wrote: hey tweedle dee tweedle dumb! Turns out I was right, aswell as Vic being right, and what I had been told was correct too, as Voxace said: Quote: The smaller diameter gives good down low performance, and the tuned length design is great for high rpm. pretty sure he was referring to the 4480's not the competion
_________________ RIP SCOTT |
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| voxace |
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Competition Header
Falcon Part No. PH 4480 |
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| twr7cx |
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Disco Frank wrote: pretty sure he was referring to the 4480's not the competion
Pacemaker PH4480's are the Competitions, PH4499 (I think or something similar) are the Standards, and as you can ssee from his post above he was refering to the Comps. |
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