I will be working on my engine in the next 6 months or so. My goal is a streetable, autoX and track race car. (i.e. no drag racing). I will have suspension + safety mods done before the engine setup, so no preaching please.

What I want to know is if the following combos would be safe and reliable to use:

Combo 1:
1. Mugen ECU or Chipped ECU to rev to 9,100 rpm
2. Mugen Valve spring
3. JDM 2.5" header + cat + exhaust
4. No V-AFC, no FPR

Combo 2.
1. Stock ECU
2. Toda valve springs. (Are Ti retainers necessary?)
2. Toda spec A.
3. JDM OE header, cat, exhaust
4. Do I need balanced pistons? (i.e. Spoon, etc?)
5. V-AFC, FPR

Combo 3.
1. Mugen or Chipped ECU to rev to 9,100rpm
2. Toda Spec A
3. Toda or Mugen valve springs (Ti retainers?)
4. 2.5" plumbing
5. Balanced Pistons?
6. V-AFC, FPR

My main concern is 100% reliability. I don't care about max HP. I prefer a setup that does not require frequent tune up.

 

# 2 and omit line item 4

 

Jack - is it "bad" to rev to 9,100 rpm? Is Mugen blowing smoke when they say 9,100 rpm w/ Mugen ECU w/ stock internals? Or, is it just not cost effective and not reliable? Thanks.

 

extra wear and tear on the motor, plus the stock cams will not make power that high..

 

Thanks.

You're still dropping by for ATL dyno day, right?

 

Stock or spec A cams use stock valvesprings.