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Old 16-04-2009, 11:12 AM   #1
redauxr8
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Default Extractors for my AU XR8?

Hi, everyone!

Should i get new extractors for my XR8? Im lookin at pacemaker competition headers....

Cheers

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Old 16-04-2009, 01:16 PM   #2
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Get tri y, secondaries instead ;) only get comps if you plan to stroke, supercharge etc? tri y's are quicker street wise.
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Old 16-04-2009, 01:45 PM   #3
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What part number are they for pacemaker? IS it PH 4001?
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Old 16-04-2009, 05:56 PM   #4
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I can't remember the part number, but I went with the Pacemaker 4-2-1. I noticed a difference straight away once they were fitted.

You soon get used to it though,and start looking for more power, then the vicious cycle begins....
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Old 16-04-2009, 09:40 PM   #5
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You have plans of supercharging so get the 4into1's, you'll kick yourself later if you dont.
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Old 17-04-2009, 10:20 AM   #6
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Yeh thats what i was thinking.... But if i do it, in the meantime will it have any good gains still?
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Old 17-04-2009, 11:18 AM   #7
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PH4001's are pacemaker tri y's t0 suit AU v8's
PH4006's are pacemaker c0mp 4 int0 1's f0r AU.

We've fitted a few pairs 0f extract0rs t0 AU v8's and had better perf0rmance fr0m the c0mp 4 int0 1's 0ver the tri y's, 0n st0ck and w0rked cars. I d0 rec0mmend u g0 the c0mps, just be warned that they aint a nice fit with the b0lts int0 the heads, and it is w0rth y0ur while g0ing and getting a set 0f alley key headed unbreak0's instead 0f the supplied b0lts.

Als0 AU extract0r gaskets are different t0 n0rmal winds0r as the p0rt height is different, s0 make sure u get the c0rrect 0ne's 0therwise ur wasting ur extract0rs by bl0cking them 0ff 1/4 inch at t0p 0f p0rt.
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Old 17-04-2009, 02:52 PM   #8
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The PH4006 Pacey Comps are great, I love them.

Dont let anyone talk you into "4-1's are too big....tri-y's make more torque" rubbish, they still have a small 1 5/8" primary and 2 1/4" collector.

Agreed they are a bit tricky around the bolts. I definitely recommend allen keys as well.

They retail for a lot more than the tri-ys, but you should be able to find them for a lot less than the RRP...
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Old 17-04-2009, 05:54 PM   #9
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Im getting it done at a exhaust shop... Do i still need to give them allen key bolts? Or will they sort it out?
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Old 17-04-2009, 06:41 PM   #10
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The other headers to look at are the Di Fillipo 1 3/4" 4-1s, especially if you are planning on a blower later down the track.
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Old 17-04-2009, 09:32 PM   #11
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A memeber has a PH 4001's for sale in the for sale section... very cheap!
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Old 17-04-2009, 09:39 PM   #12
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Quote:
Originally Posted by dreadly
A memeber has a PH 4001's for sale in the for sale section... very cheap!
Link?
I can only find the e-series PH4000's for sale?
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Old 17-04-2009, 11:13 PM   #13
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Maybe i read it wrong... lol few coopers will do that to ya ;)
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Old 18-04-2009, 05:57 PM   #14
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i recomend the PH4006's highly! i got a set and the full system. the difference in the top end was very noticeable straight away.
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Old 19-04-2009, 10:40 AM   #15
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so what's the best bang for buck for a 200kw auto? tri-y's or comps? exhaust, cai and tune is all she'll ever get. I always thought the tri-y's would be best?
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