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Author EcoTec Valves...
Jamie
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Registered: 1st Apr 02
Location: Aberdeen
User status: Offline
27th Sep 04 at 18:44   View User's Profile U2U Member Reply With Quote

Whats everyones views on these...? Heard mixed opinions

quote:
ECOTEK VALVE CB-26P
There are three main benefits from fitting an Ecotek CB-26P. These are:

PERFORMANCE Because the effect of the CB-26P is to create a better suspension of fuel molecules in the mixture you get an improvement in the combustion process. In other words you get a better bang - or more bang for your petrol. This makes acceleration smoother and more rapid and has cured flat spots in the rev ranges of numerous sports cars. The Ecotek CB-26P is used by tuners of performance engines and on a number of competitive touring and sports cars because it incorporates the same 'swirl' technology now commonly used in high performance racing engines. Turbulence in the inlet manifold (as produced by the CB-26P) is also known to reduce fluctuations in operating efficiency and flat spots caused by petrol vaporisation at high temperatures as well as the effects of performance tuning through high lift cams and competition exhaust systems. On almost all-non-performance cars the first experience you will get from the CB-26P is considerably improved throttle response. Improved engine pick up is the first symptom of better more efficient combustion.

PETROL CONSUMPTION If you do not use all the benefits of this improved combustion in tearing around at twice your normal speed you will notice a significant improvement in petrol consumption - especially at motorway speeds. Independent figures and 'real world' tests show that, on anything other than the very newest vehicles, improvements in petrol consumption of 15% are commonplace. At speeds of 80 mph engineers have actually recorded fuel savings of 29.7%.

EMISSIONS Because you get a better bang you also get a cleaner bang. Because the fuel molecules are more evenly suspended, more of them are burnt properly so you get less hydrocarbon (a pollutant that is effectively unburned petrol) and because less petrol is burned you get less carbon monoxide. Another benefit of less pollution is less exhaust and engine corrosion, particularly carbon build up (through hydrocarbons and soot) so your engine and spark plugs run at peak efficiency for longer and your exhaust system and your catalytic converter will last longer. Conventional combustion theory is based on the smooth flow of induction and exhaust gasses. In the old days if you wanted to improve your cars performance you might have your head ‘gas flowed’ – this basically involves polishing the inlet and exhaust ports to make the gasses flow faster. More recently however, F1 engine development has involved what has become known as ‘swirl’ technology. This contradicts old notions by suggesting that turbulence in the induction gasses creates a better suspension of fuel molecules and thus more effective combustion.



The Ecotek CB-26P can be fitted directly in the inlet manifold or to a vacuum servo/breather hose close to the inlet manifold. It is a non-return valve with a Venturi construction, which injects minute quantities of agitated air into the manifold at certain specific pressures. Whilst this will lean the mixture very slightly the quantities of air are so small as to make little difference (5% approx) but they are sufficient to create the turbulence necessary to produce such a dramatic improvement in combustion efficiency. Such improvements more than overcome the slight leaning of the mixture and practical experience has shown that many engines actually run cooler with the device fitted.




http://freespace.virgin.net/steven.crook-dawkins/tuning%20guide/ecotec.htm

[Edited on 27-09-2004 by J-Me]
Mattb
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Registered: 2nd Feb 03
Location: Under your sisters bed
User status: Offline
27th Sep 04 at 18:46   View User's Profile U2U Member Reply With Quote

wank, basically leaks vaccum from the inlet manifold, and causes the car to run lean, you'll loose torque bottom end, and it wont run too well.
BeArDy
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Registered: 7th Aug 00
Location: Manchester
User status: Offline
27th Sep 04 at 18:46   View User's Profile U2U Member Reply With Quote

there crap
they give u a air leck and make your car run lean.
BeArDy
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Registered: 7th Aug 00
Location: Manchester
User status: Offline
27th Sep 04 at 18:47   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Mattb
wank, basically leaks vaccum from the inlet manifold, and causes the car to run lean, you'll loose torque bottom end, and it wont run too well.


got there before me
Mattb
Member

Registered: 2nd Feb 03
Location: Under your sisters bed
User status: Offline
27th Sep 04 at 18:51   View User's Profile U2U Member Reply With Quote

haha!

 
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