Cheapish way to a full system

[zxsixr03]

Well after hunting around for a full system for my '06 ZX6R race bike, came across a few posts on kawiforums.com on how the Micron Serpent headers fit a lot of other brand Slip on's Akra, Yosh etc
Hence i was on the look out for one viewtopic.php?f=20&t=31370. Micron were flogging these off there website site for $200US which is a steel.

The AUS importer has a full system with the slip on RRP was $2700 selling for $1200 if anyone is interested.
http://wfo.com.au/pages/indexpag.html

I scored a free ARATA titanium header from Trev at Doin bikes and the mid pipe just need to get a small joiner pipe made up to fit my Akra slip on.

So i thought i'd pass on the info regarding the Micron headers as these fit most slip on's with no mods needed and if u already have a slip on its a cheap way to get a full system.

[Wattie]

does the full system on the 6's make much difference??

[zxsixr03]

Yet to find out how much exactly, it will drop a lot of weight, Veichy on RATS had a good midrange improvement on his R6 when he went to a full system.

[tim]

is a full system exhaust is a different beast to a slip-on? (the silencer part itself?)

[zxsixr03]

If i understand what your saying then yes.... in my case the Akra slip on doesn't fit the Akra full system you have to buy the correct silencer diameter wise to fit, in the case of the micron it has a wider diameter header but tapers in at the end of the mid pipe to allow a slip on which is made for the standard size mid pipe from the factory. Bust besides the fitment the actual muffler part is the same as a slip on.

[Blurr]

so is it really a full system if the true full system generates better airflow from the headers all the way to the exit of the pipe?

Reduction in diameter would lead to a reduction/restriction in airflow.

Agreed a great cheap performance mod but not really a full system.

[zxsixr03]

My Arata to slip on Akra will be all of 2.5mm difference at the joiner pipe, i guess the dyno will tell. I'm no engine guru but won't more back pressure give more midrange? yeah in the true sense its not exactly the same a full system but will be very close.
I'll be happier with the weight saving stock 11.2kg, ti headers and ti slip on 3.5kg
Here is my current map with stock headers and the Akra slip on and race filter.
If i can get it to follow the same increase as i got top end but from 8k onwards i'd be very happy.

[Gosling1]

so is it really a full system if the true full system generates better airflow from the headers all the way to the exit of the pipe?

Reduction in diameter would lead to a reduction/restriction in airflow.

Agreed a great cheap performance mod but not really a full system.

the reduction in diameter actually increases the velocity of the flow of exhaust gasses, and this can have a better effect on the efficiency of the system than having larger diameter pipes all the way through.....so a small restriction can actually produce more power than you might think at first glance.....

the whole idea of a 'full system' is pretty flawed anyway - an OEM system is a 'full system', it is just normally heavier than those offered by a/market suppliers, and generally made of plain mild steel. The trick is in the design of the collector box and any balance-pipes across the header pipes....you can put 4 OEM header pipes next to 4 'Brand X' header pipes and guess what - they will look almost identical.

The best advantage of a full system is weight loss, in 99% of cases.

[Strika]

Apart from Gos' weight savings, which is probably spot on with, the real difference in aftermarket systems and OEM systems comes in materials and what it is built to do. You may notice most "Race" Systems for four cylinder bikes, are 4 into 1's. Where most OEM road systems are 4 into 2 into 1. The difference is in what's called scavenging. The road system, with the 4-2-1 set up, will scavenge more effectively at lower to mid revs. As you alter the way the header pipes join together, you alter the prime rev band for that set up to scavenge efficiently in. Scavenging for those who are not aware, is simply using the power pulses of combustion, to suck out any unburnt gasses from the combustion chambers. The shape of the collectors will alter where this is most effective in the rev range. So by using a 4-1 rather than a 4-2-1 you move that efficient scavenging area higher up in the rev range.

Another advantage of the full aftermarket system is in flow. The aftermarket pipes are less restricted due to them not having to meet horrible criteria such as.....Noise and emissions!!!!

nb; This is a dumbed down explanation and there are other factors which effect how a system will operate, but there are so many variables I am not up to writing war and peace on it this morning!!!

[zxsixr03]

Cheers for the heads up Gos and extra info Strika.... should have the new system fitted and dynoed before the RD5 FX at EC

[zxsixr03]

Anyone know if the stock headers has a lambda sensor or will i need to add one to the new headers ?