http://members.iinet.net.au/~zac510/ka24head.html
Hopefully it explains thoroughly all the fuckups involved in the head conversion :)
zac
oh, and let's get some chatter on this list! :)
Zac Campbell wrote:
OK, a few of you know of my bastardised L20b engine...
Well it hit the chassis dyno today for the very first time. Mucked around with niggles and tuning for a few hours then knuckled down for a good power run. It churned out 130kw at the wheels on 16psi! Something in the wastegate was stopping it from controlling boost so it spiralled to 16psi - not that that was a problem, tough ol' L20b took it all :) The tuner did about a dozen full power runs upto 16psi but the poor boost control and some other stuff stopped us from going too much further. It doesn't have an intercooler so intake temps were right up there. In the end I walked away with a sound base map and a result far above my initial expectations.
Of course this doesn't happen on any ordinary L20b, I've fitted a KA24E TRX head and made the few other modifications to make this work. The dead stock bottom end and KA24 head combo can rev to 7000rpm quite easily.
Here is an engine bay photo: http://members.iinet.net.au/~zac510/bay_8.jpg Here is the dyno vid! http://members.iinet.net.au/~zac510/dyno1.mpg (3mb divx)
I'm still working on a page with a thorough walk through of the conversion.
Zac
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