there are no good boosted Vtecs

[WPN.22R]

A'PEXi wrote:
theres a guy with a h22a twin turbo around here

theres also a guy with a h22a with a t4 on it!!!! 8)

[A'PEXi]

theres a guy with a h22a twin turbo around here

just cuase something is twin, doesnt mean its 'faster'.

i purely replied to 'there are no good boosted vtecs'.... i did not mention whether it was fast or not, the fact that the guy did most of the work himself, i think deserves some respect.

[A'PEXi]

its a eg civic btw.

[BLKCRX]

Yeah turbo and vtec does't work.. thats why my car and so many others are soo slow !

Regards James

[joyride]

type R turbos are fast.

[one more chance]

in response to the TTH22A EG civic..
it's a tough set-up and i have driven it first hand....but the truth is that there are 2 WRX turbos running off a 2.2L engine! even at 19psi, the engine is not making enough power to get the turbo working at their full efficiency! great work of engineering though! The welding work in particular is spectacular! 8)

[saboteur]

The guy that built it was an engineer, so I'm guessing that since it was his own ride he put a hell of a lot of time into that thing. Has it got stock internals?

[TODA AU]

im came across this on the web anyone agree with this.


"Normally aspirated cams, especially high RPM oriented such as [acronym:0bda72b9d5="Double Overhead Cam"]DOHC[/acronym:0bda72b9d5]
[acronym:0bda72b9d5="Valve Timing and lift Electronic Control"]VTEC[/acronym:0bda72b9d5]'s have longer duration and overlap. when you use force induction,
you don't need all this duration and overlap... a properly engineering
[acronym:0bda72b9d5="Valve Timing and lift Electronic Control"]VTEC[/acronym:0bda72b9d5] cam for turbo applications would offer KILLER torque curve and
power."

Overlap is used as a way of exiting exhaust gases to actually suck in
the intake charge. This is partly what [acronym:0bda72b9d5="Valve Timing and lift Electronic Control"]VTEC[/acronym:0bda72b9d5] does, kind of a wanna be
turbocharger. So imagine if you have a lot of overlap on a turbo.
Under boost, the compressed air would blow right through the cylinder.
You wouldn't get all that quality compressed air to stay in the cylinder!

This is why B18A/B motors respond so well to turbocharging with
cam sprockets and JG Engine Dynamics #1001 camshafts. The camshafts
are used to maintain peak cylinder pressure and sprockets dial it all in.
The turbocharger can cram all of it's boost into the cylinder.

So far no one has good turbo [acronym:0bda72b9d5="Valve Timing and lift Electronic Control"]VTEC[/acronym:0bda72b9d5] cams. It is questionable whether
or not sprockets can dial enough overlap out to use 100% of the turbocharger's
output.

[acronym:0bda72b9d5="Valve Timing and lift Electronic Control"]VTEC[/acronym:0bda72b9d5] motors do respond well to turbocharging, but there's still a lot of room
for improvement.

No... (Disagree)
That statement is complete nonsense...
Zero overlap turbo systems are a thing of the past...