BlueZ31 Posted October 1, 2008 Share Posted October 1, 2008 ok, i know everyones probably tired of heaps of n/a vg30e posts like "why cant i make as much as (insert name here)'s turbo motor?" but this is actually a serious set of questions. ive always liked reading old engine builders books, and since the engine has a "dynamic flow path" as smokey yunick once put it im having trouble figuring out what the vg30e's primary weakness from a power building standpoint is! we all know there durable and decently fuel efficent motors, and capable of great turbo power, but why is it so difficult to build power without boost or nitrous? Especially given that you do things like the ka24de throttle body, engloids plenum,polished lower intake,headers etc...whats the bottleneck in this system? are the heads/valvetrain the main weakness? or is it possible than nissan's original fuel map is too conservative, or possibly the ignition system? Im at a loss of direction, ive already set aside the following for my motor -engloids plenum fully polished topped by a ka24de body/ lower intake p/p -isky cams/three angle job/JWT springs -headers/hi-flo cat/ cat-back -msd-6a/bosch wires/plugs -nismo t-stat and e-fan/aluminum rad -aluminum flywheel (on backorder:() -a/c delete I just feel as though theres something that hasnt been done before or has been overlooked repeatedly that could free up a good deal of power....i know from experience that on small chevy's one of the biggest increase to be had is from a set of heads/and a compression bump (like a 25% increase on some applications) could it be the heads that are killing any further attempts at power!? maybe some port work/extrude honing? I have no experience with ecu tuning, but i considered a JWT ecu, good idea/bad idea? hope you guys dont mind weighing in on this yet again, and sorry for the overuse of the ???'s im just a little frustrated:evil: Quote Link to comment Share on other sites More sharing options...
Challenger Posted October 1, 2008 Share Posted October 1, 2008 Well I dont know much about the vg's but it seems like your plan really isnt changing anything sugnificantly.. Radiator wont give you power (for the most part), neither will a flywheel. The other parts are pretty insignificant.. Id do some more research to know what other people have done for specific cam specs, valve springs, compression, etc. Quote Link to comment Share on other sites More sharing options...
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