Toymods Car Club Inc: General Car Talk => Comparison: B16A vs 20V

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mrsoopra
Regular

Location:
Melbourne
Registered:
July 2002

Re: Comparison: B16A vs 20V - limits anyone ?

Fri, 12 December 2003 00:25

Vtec sounds unbelievable, but quad throttles, mmm soo nice. B16A was released in the JDM EF civic & CRX. the EG civic had the B16A2 which was a revised version of the b16a. and the EK civic had the B16A3 .. Type R EK civic had the B16B engine..

I agree with whats been said sofar, the honda engine is alot more expensive to modify, but i do believe from my experience that it is more rewarding than the 20V..

As for the 'frail' thing, i totally disagree. I've driven quite a few VTEC civics/integras and have never experience anything 'frail'. Infact, i've never had a VTEC engine fail on me.

VVTi & VTEC are actually two different kettle of fish . VTEC is electronically controlled and when its engaged, changes the entire cam profile.. Whereas VVTI is hydraulic controlled and only alters the timing of the current inlet cam ...

Here is a better explanation :

Quote:

Honda was the first to offer what it called VTEC in its Acura-badged performance models like the Integra GS-R and NSX (it has since worked its way into the Prelude and even the lowly Civic). VTEC stands for Variable Valve Timing and Lift Electronic Control. It basically uses two sets of camshaft profiles-one for low and mid-range rpm and one for high rpm operation. An electronic switch shifts between the two profiles at a specific rpm to increase peak horsepower and improve torque. As a VTEC driver, you can both hear and feel the change when the VTEC "kicks in" at higher rpm levels to improve performance. While this system does not offer continuously variable valve timing, it can make the most of high rpm operation while still providing solid driveability at lower rpm levels. Honda is already working on a three-step VTEC system that will further improve performance and efficiency across the engine rpm range.

Toyota saw the success Honda was having with VTEC (from both a functional and marketing standpoint) but decided to go a different route. Instead of the on/off system that VTEC employs, Toyota decided it wanted a continuously variable system that would maximize valve timing throughout the rpm range. Dubbed VVTi for Variable Valve Timing with intelligence (Is this a dig at Honda, suggesting their system isn't intelligent?), Toyota uses a hydraulic rather than mechanical system to alter the intake cam's phasing. The main difference from VTEC is that VVTi maintains the same cam profile and alters only when the valves open and close in relation to engine speed. Also, this system works only on the intake valve while VTEC has two settings for the intake and the exhaust valves, which makes for a more dramatic gain in peak power than VVTi can claim.

I believe the B16 engine would be the better engine to modify for sure.. Anyone seen this engine in RWD form?

Just my 2c Smile

Cheers

Gaz

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