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Author Topic: Extractors / Headers to suit C4  (Read 19404 times)

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Offline White88

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Extractors / Headers to suit C4
« on: August 12, 2005, 03:46:37 PM »
Has any body had extractors / headers fitted to their C4. Just would like to know of any OZ companys make headers to fit right hand drive C4's. Or do I have to get a set made up, just got a price today, $1,200 to make a set up from scratch and fit them, is this okay?
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Offline 77CVT

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Extractors / Headers to suit C4
« Reply #1 on: August 12, 2005, 04:13:06 PM »
About $800 is the norm up here.  For $1200 I would want mandrel bent!

My system cost $1600 right through to the exhaust tips (no cats) and the headers are HPC coated.

I don't think anyone has them off the shelf.
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Offline BOSCHVETTE

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Extractors / Headers to suit C4
« Reply #2 on: August 12, 2005, 05:39:10 PM »
i got a set of brand new hooker headers of the U.S ebay landed to my door for $300 aus. and fitted for $200. brilliant fit great result that my exhaust man said he would have charged me $1400 to get the same quality.
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New toy about to breath life and we will have a strangle hold on the leadfoot forever 850hp 1150kg Australian sports sedan series here we come.
Z06 sports sedan about to be semi retired.
Old C4 weapon now retired to the garage
450 RWHP WITH MORE TORQUE THAN MUNDINE
BUT IT LOOKS LIKE YOU HAVE BOUGHT A BAG OF ROCKS TO A GUN FIGHT.....

Offline Stingraynut

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Extractors / Headers to suit C4
« Reply #3 on: August 12, 2005, 05:54:38 PM »
Are you still lefthand drive ? I thought the steering conversion prevents US headers from fitting?

I believe someone in Brisbane has now made a jig to make RHD headers but the cost is up around $1000

S'nut
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Offline Vette Obsessed

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Extractors / Headers to suit C4
« Reply #4 on: August 12, 2005, 06:02:56 PM »
There is one company in Australia that makes off the shelf headers for C4's that I know of (I think it was Hurricane Headers..).  If you call Tuffy Mufflers in Waterloo they will be able to advise you (they told me about the locally available pipes when I had my headers made).  What particular conversion of car these fit I don't know.  I was told a price of $900 for these locally made headers a little over two years ago when I was getting quotes for my headers.

Whether the $1200 price is good depends.  I assume that is for uncoated mild steel pipes with press bends?

My headers cost me $1750 - these were ceramic coated (about $300 worth of value) and are mandrel bent with flanged collectors.  I'm very happy with what I got for my money.

Check the work of who is doing the work if you get some made up - for one thing you don't want your collectors to hang too low so they get cleaned up by the first bump in the road.  Make sure who does it is going to package it well if you go custom.  (So your spark plug access isn't too badly effected for instance).

I would recommend either ceramic coating or heat wrapping too just to keep your underhood temps reasonable and to ensure all the plastic connectors and the like in your engine bay live a little longer rather than going brittle and breaking over time from heat exposure.
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Offline Vette Obsessed

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Extractors / Headers to suit C4
« Reply #5 on: August 12, 2005, 06:10:24 PM »
BTW white88 - your car sounded pretty nice when you took off from Robertson last Sunday. ;27

Quote
Originally posted by Stingraynut
Are you still lefthand drive ? I thought the steering conversion prevents US headers from fitting?

S'nut


When I had a set of US headers test fitted on my car they hung so low it wasn't funny.  They hung below the floorpan. :b4

I wouldn't import headers again because it is basically a gamble whether they will fit.
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Offline BOSCHVETTE

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Extractors / Headers to suit C4
« Reply #6 on: August 13, 2005, 07:14:45 AM »
S'nut
i think it would depend on the style of convertion, but  these fitted really well.my car is RHD but they seem to be a really good quality header as i have seen them for sale for around $400 US. i think i was lucky getting them for the price i did,but in saying that i have got alot of performance parts of ebay and if you do your research properly it can make things that would not normally be affordable now achiveable.
cheers boschvette
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New toy about to breath life and we will have a strangle hold on the leadfoot forever 850hp 1150kg Australian sports sedan series here we come.
Z06 sports sedan about to be semi retired.
Old C4 weapon now retired to the garage
450 RWHP WITH MORE TORQUE THAN MUNDINE
BUT IT LOOKS LIKE YOU HAVE BOUGHT A BAG OF ROCKS TO A GUN FIGHT.....

Offline ben73

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Extractors / Headers to suit C4
« Reply #7 on: August 14, 2005, 08:52:59 PM »
CES Racing Systems in Bris has a jig to make them so you won't have to surrender your car for weeks on end.

www.cesracing.com.au

Here's mine:

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Offline BOSCHVETTE

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Extractors / Headers to suit C4
« Reply #8 on: August 15, 2005, 07:22:09 AM »
great job done on them.what kind dollars do they want for them?
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New toy about to breath life and we will have a strangle hold on the leadfoot forever 850hp 1150kg Australian sports sedan series here we come.
Z06 sports sedan about to be semi retired.
Old C4 weapon now retired to the garage
450 RWHP WITH MORE TORQUE THAN MUNDINE
BUT IT LOOKS LIKE YOU HAVE BOUGHT A BAG OF ROCKS TO A GUN FIGHT.....

Offline ben73

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Extractors / Headers to suit C4
« Reply #9 on: August 15, 2005, 07:33:41 AM »
Don't remeber exactly, somewhere around the $1000 mark..
They are a nice piece, all tig welded mandrel bends etc...
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Red/Red '84  12.4@111.6mph

Offline Thunder Kiss

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Extractors / Headers to suit C4
« Reply #10 on: August 15, 2005, 09:48:27 PM »
Those look great ben, any photos of them fitted to your car?
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Offline Vette Obsessed

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Extractors / Headers to suit C4
« Reply #11 on: August 15, 2005, 10:29:14 PM »
Interesting how they didn't merge the pipes until right at the collector instead of using the conventional  "4 into 1" setup.
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Offline ben73

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Extractors / Headers to suit C4
« Reply #12 on: August 16, 2005, 05:30:08 AM »
Quote
Originally posted by Thunder Kiss
Those look great ben, any photos of them fitted to your car?


Ummm, maybe, I'll have a look....
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Red/Red '84  12.4@111.6mph

Offline Thunder Kiss

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Extractors / Headers to suit C4
« Reply #13 on: August 16, 2005, 09:04:16 AM »
Quote
Originally posted by Vette Obsessed
Interesting how they didn't merge the pipes until right at the collector instead of using the conventional  "4 into 1" setup.

They commonly call that a tri-y design.  It is meant to be better for mid range torque where a 4 into 1 is meant to be better for higher rpm horsepower.

Ben, did you notice much of an increase in power/torque after fitting those?
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Offline Vette Obsessed

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Extractors / Headers to suit C4
« Reply #14 on: August 16, 2005, 09:21:14 AM »
Quote
Originally posted by Thunder Kiss
Quote
Originally posted by Vette Obsessed
Interesting how they didn't merge the pipes until right at the collector instead of using the conventional  "4 into 1" setup.

They commonly call that a tri-y design.  It is meant to be better for mid range torque where a 4 into 1 is meant to be better for higher rpm horsepower.


I know - I was just commenting as I really haven't seen them offered for our cars.  Every other type of header I recall having seen is 4 into 1 style.
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Offline White88

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Extractors / Headers to suit C4
« Reply #15 on: August 16, 2005, 11:39:19 AM »
I agree, Hooker, Hedmen and TPIS are all 4 into 1 type. Never seen Tri-y for a C4 before.
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Offline 77CVT

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Extractors / Headers to suit C4
« Reply #16 on: August 16, 2005, 12:22:40 PM »
Quote
...Ben, did you notice much of an increase in power/torque after fitting those?


It was mostly due to the new 383 they were attached to!  :evil  ;39
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Offline White88

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Extractors / Headers to suit C4
« Reply #17 on: August 16, 2005, 05:27:42 PM »
Quote
Originally posted by 77CVT
Quote
...Ben, did you notice much of an increase in power/torque after fitting those?


It was mostly due to the new 383 they were attached to!  :evil  ;39




;41;41;41;41;41;41;41
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Offline 87Z51

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Extractors / Headers to suit C4
« Reply #18 on: August 25, 2005, 11:13:00 PM »
Pacemaker make then for C4s ,both mirror and chain drive conversion
Part # 5300 /5301   (1 +3/4 only (1+5/8 special order)

Any exhaust shop should be able to order them.
Approx $800 but a dealer on eBay was doing them for $550 earlier this year.

Conventional 4 into 1 ,header flange is approx 20mm below floor pan.Mine is lower than stock with Z51 susp and have not hit them yet.Perfect fit , no 2 plug is a bitch as pipe bends back and in over plug to clear steering shaft.
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Offline Thunder Kiss

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Extractors / Headers to suit C4
« Reply #19 on: August 26, 2005, 07:24:01 PM »
Pacemaker, very interesting.
More info here.  They're mandrel bent with no AIR pump lines and it says you need a hi torque starter as they may not clear the original one.

I'd love to see pics 87Z51.
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