was shopping around for cams for my skyline, came across this thread on nico. some might not give a ****, some might learn a thing or 2, i thought it was pretty good.

Who is Colt Cams?
http://www.coltcams.com
Owner Geoff provides custom camshaft grinding using the latest technology for the “next level” in performance.

Geoff has over 25 years experience in camshaft grinding and design. His custom camshaft designs are well known in the automotive world and he has expertise in all types and makes of camshafts.

Colt Cams Inc. is a Canadian based business, but work closely with many customers in the United States as well as worldwide. Geoff and the crew at Colt Cams Inc. are a team that strongly believes in great customer service and relations.

What is Tri Flow Technology?
The most common problems encountered when performance camshafts are installed are the loss of bottom end torque, poor idle quality and computer problems.

This phenomenon has been more and more prevalent with high-revving, multi-valve engines. When two valves open at the same time, there is twice as much room for the air to move through. Picture a vacuum hose that has a diameter of say 1". It could quite easily suck up marbles or small rocks. If that same vacuum was hooked up to a vacuum hose of say 5" diameters, what could it pick up? Maybe a feather, but the marbles and small rocks are totally out of the question. An engine works the same way!

When an engine is optimized for HIGH-RPM power, the LOW-RPM power will unfortunately have to be sacrificed... or will it?

What if someone could make a performance camshaft that could make better power at HIGH-RPM with a minimum low - rpm torque loss, without the use of a variable lift cam system? Colt Cams has managed to do just this for virtually ANY multi-valve engine. By staggering the opening times of the two intake lobes, we have created a swirl in the system. The principle behind this design is to open the intake valves progressively. Opening one valve first allows the fuel to travel across the chamber at a greater velocity due to the smaller venturi action, it then helps pull in the second charge at a faster rate.

This gives the equivalent to the secondaries opening up in a carburetor. In turn, with the larger cam, the engine has better vacuum at idle since there is less overlap, throttle response is greatly increased, and turbocharged vehicles have noticed less lag and faster spool up time.
Geoff's theories on the "Tri-flow" have been proven time and time again, on many different engines. The testing has proven the theory, and now it is time to let the world see the results.

All the above information as well as other services, testimonials, pictures, and additional misc can be found at http://www.coltcams.com

****Colt Cams also makes ALL of http://www.pdm-racing.com cams if anyone wants a reference point of quality and performance.

 

Stock B-VTEC cams have staggered lift and duration already, on the non-VTEC lobes. To promote "swirl". This is not new technology. Not a bad idea for non-VTEC motors.

 

Yeah I'm not sure how this is new information?? Maybe true for Skyline's....**** I know NOTHING about camshafts for those things lol!

 

nissan motors lift the intake/ex valves at the same time.

i think this applies more to the naturally asp guys because at 22 psi, i dont think the combustion chamber gives a ****. man im starting to sound like don flores.