Putting all these P to W numbers aside for a bit, anyone who has driven even a bone-stock engined B-Zen will vouch for the fact that it isn't very confidence inspiring. If you compare its braking and turning capabilities to a VTEC, the latter seems like a sports saloon. One can't drive the Zen fast just about anywhere, like a VTEC.
Regardless of whatever suspension/brakes upgrade the B-Zen goes through, its basic chassis dimensions and dynamics, which include the wheelbase, rear torsion bar suspension, narrow track etc. make it a hairy experience at even half-decent speeds. A VTEC with good suspension setup can stay planted at 200kph, can brake and change lanes from those speeds when required. Stock brakes are VERY good and though a tad over-assisted, one gets used to it. Forget about these antics in a Zen, even at 150kph it feels flighty. A brake upgrade is absolutely essential, which does NOT mean an Esteem Type II swap, but something bigger and better, or you might as well be playing Russian Roulette
However, a lot of work into a Zen can indeed produce results. The 1.3 Zens running on the track are as competitive as an equally-powered Esteem. Those cars have extensive work into them, which includes a rear Esteem subframe wedged in to allow a rear multilink setup from the saloon to fit in. The track has been widened as well. After all this work and a lot of chassis reinforcements by way of a rollcage and stabaliser bars, it still can't keep all four wheels on the ground through the cambered double-apex C1 of the KMS track, due to its inherently short wheelbase, which can't be changed, whereas a half-decently setup Esteem clears it with all wheels on terra-firma for most part while the Zen is a tripod almost from entry till exit, which is when the steering lock is unwound.
In a drag setup, Zens have a huge advantage in terms of weight, so if you're building a race-only car then the Zen maybe suitable. But if one has any intention of driving AND enjoying it on the road, might as well pass it up. A stock-engined Zonda with stock/Esteem TII brakes is scary on the road even in a straight line. Its not just the power to weight, its the fact that you know you can't stop when you need to. I would value that over that 0.5 second saved in a quarter-mile.
Last edited by doomsday : 20th January 2010 at 11:47.
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