Originally Posted by ca18hmm i am going to speculate here, but the reason i think what really kills the torque down low is the 6.6mm ex cam, so say you switch at 5k a de with a 10mm lift cam is going to make more from around 3k-5k.The other being the 48deg of overlap once you hit high lobe, so this means you really need to rev it to make power in a forced fed induction situation.
However in saying that i feel there is a really good solution (although i havnt tested this first hand yet)
as you can see here, the problem with taking out overlap on the high lobe is that the low lobes have no overlap so you create a siltation where the intake and ex are closed.
however if you set up your solenoid so that the ex lobe is always on high, then get some cam gears and retard intake 10deg and advance ex 10deg (obviously fine tune this on the dyno to your engine) all of a sudden you have 0 deg overlap on the low lobes and 28 deg over lap on the high lobes, which is the dame amount as s4's if i am not mistaken.
so this will give you a 224 8.4in and 268 10.3ex low with a 264 10.7in and 268 10.3ex high. In short a similar set up to the vet but with more duration and the vet smashes the det in torque and torque delivery. Peak torque before 3k from memory
i think this set up would be well suited to your turbo, and are you running standard manifold?
however i would swap the blocks and heads round, so put the vet head on the det block, i am not familiar with the bluebird motor all that well, but to my knowledge its not like the gtir? the studs are the same as the rwd det?
That sounds like a very interesting plan right there. And thats where the VVL will kill over a Vtec engine. haha. That could very very well work with great results. I think Coheed should be the first to jump onto trying this out or someone with a build coming up
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