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great write up and its nice to see some actual intelligence instead of "hey what'd you put on your car, that would look sweet on my car". This is the first time I've heard someone mention "flowing heads" or vvti cam change out issues. I am a fan of N/A, mainly because i come from the motorcycle industry, but also because i live in CA and need my car to pass emissions tests. And no, I'm not going to do a full turbo kit then try to change it all out in a weekend just to pass my smog check up on monday, then put it all back. Ive seen several people over the years that try it and it never works out. If your married at least.... :) again, great info here i love this crap.
 

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Cherisher
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4,800 Posts
this thread should be ON FIRE!! just wanted to bump it. after all, it's a Sticky... are people dissatisfied with their N/A performance? a TB, intake, cams, exhaust (from the head back) should be pretty peppy. the more air you can get in and out of the engine is the goal.. no?
 

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I'm gettin ready to do cams and cam gear with the VB upgrade. This will hold me over while I am putting together my turbo kit part by part... Ill throw up some dyno of before and after from stock to "just" cams and -3 cam gear to see/show how much that combo will yield. And me being the most picky person about mods, I will post up my opinions/ feelings as well
 

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what about modifying the quench area by adding metal alloy to the head chamber to raise the compression ratio? for my case it's cheaper to weld/add aluminium than buying custom made high CR pistons, I have most of the ingredients for modified NA power , cams 264, sprocket, +1mm valves, springs, light weight dampened crank pulley (over drive), XS-power side intake plus 1UZ TB, ECU will be unichip piggyback
currently running long headers plus complete exhaust system (2.5 inches) and flea bay intake and light weight pulleys.
most of the head works on the internet involve increasing or polishing the chamber for boost purpose
but not enough info about adding quench!
 
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