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  1. All Motor K series Technical Discussion
    Hi Compression test results, What you think? Engine cold. Intake manifold off. Toda cams. Its a new cheap gauge so not sure how well calibrated it is. From what I googled so far I should be happy they are all 4 similar but maybe all a bit on the low side Cilinder 1 : 155psi (Wet 170psi)...
  2. Advanced Engine Theory and Design
    I run a k20a2 with rbc , 70mm tb , dc exhaust manifold , 550cc fuel injectors and and a programmable ecu . I am planning on upgrading the head with , toda compression gasket , dual valve springs 80lbs and titanium retainers . I am also thinking putting TODA A2 camshafts but i dont know how much...
  3. All Motor K series Technical Discussion
    Ok guys just got my NA K20Z1 build together on my 06 type s. I've dropped endless amounts of money into this motor and am now highly disappointed in the numbers the car has put down. Car put down 210WHP/131TQ on a mustang dyno. Those are numbers people are hitting with just bolt ons and a tune...
  4. Advanced Engine Theory and Design
    We've got some brains on this forum so it's probably a good audience to ask for contributions. I initially wanted to pose the question, "If increasing the compression ratio of an engine shows diminishing returns, what factors are truly the limiting factors?" But I think I have more questions...
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