Just dreaming outloud but has anybody ever done a 4cyl to 6cyl swap and made it work? If possible, do tell, if not, oh well.
Excellent post, I have wondered why the SVX motor was not used or considered. Technology of the new EZ30R is a fair enough answer for me, as the SVX motor has not progressed into newer vehicles, it seems obsolete at this point.SPOOLN STI said:I expect some criticism for what I am about to write. Please take it as my educated opinion. The EG33, SVX motor stock can take more abuse than a stock EZ30R. The EG33 has thicker cylinder walls, has been tried and trued for many past builds. The cons are the rotational mass of the internals, the motor has to be special fabricated to fit the engine bay (custom radiator placement) and will never be able to REV like an EZ30R. What the EZ30R looses in displacement more than makes up in technology and engineering. The main thing that sets the EZ30R apart is the "R" AVCS (subies version of VTEC). Not that i'm a HONDA fan I respect their technology. The EZ30R is just a mere 20mm or (0.8'') longer than a EJ257 motor in an STI. It's almost a drop in minus the motor mounts. You won't loose your cars balance and there isn't as much of a weight increase. Not that the EG33 weights much more than an EZ30R. It's not always how much it weights but, how it carries it's weight. Modded vs modded raises another debate, being that both will cost similar and both will hold plenty of whp. I would say a 1-1.5k higher rev limit, the EZ30R will more than make up it's .3ltr of displacement, especially when a GT40R is thrown into play. The EZ30R's full potential has yet to be proved and it's still climbing. Soon enough there will be a handful of EZ30R's roaming the streets at a 600-800+ whp range. It's only a matter of time and money. Not to debate and undermine someone elses valid educated opinion it's only my opinion. I hope this brings another point of view to displacement. Good luck, I'm happy to hear people go against the grain.
Good resources would be Perrin, PDXTuning, and KingPin. Check them out.