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Power
Hey Viper, I'm also running the BT/A20A3 with the 12 valve head. It totally sucks trying to find anything for this engine since it's non-vtec sohc relic.
I like this motor though, I'm a softy for originality and more than slightly annoyed with the current Vtec swapping subculture.
My 86 Si is currently recieving a head overhaul which will include a 3 angle valve job and port and polish, all being done by the Honda dealership near my house in Houston. I can't wait to get it back and feel the difference. Those two flow improvements and a short ram air intake are my only mods, so you're a step ahead of me. I plan on putting in a full exhaust as well.
Depending on how deep you want to get into your quest for more out of our humble A20A3, I suggest staying all motor, avoid forced induction, & definetely stay away from NOS!! Screw that 2 fast 2 furious bullshit!
Don't be a squid man.
Go with a 1 above stock cam, matched set of lightweight pistons, connecting rods and crank, chromoly rings and a lightweight flywheel. And maybe a .20 over bore on the cylinders. Then, as I am doing, go with a port & polish, as long as your engine is apart anyway, right? Send the head to a machine shop.
You've got your exhaust and & intake, the above mentioned engine and head mods, add in hotter ignition (although this is difficult, I've had no luck in locating an MSD coil that has the harness necessary for our year model) MSD wires and a good synthetic oil, either Royal Purple or Redline. If not one of those, then Mobil 1 synthectic, all 5 W 30 btw.
From my point of view, these will safely add more power with out imminently destroying your engine, although PRICEY...yes..very. The Head work being done to mine is costing me around $1,500 Infact, in the long run, it would be more cost effective, probably cheaper and much more efficient to swap but everyone is swapping, wouldn't you like to dust Vtec roddie with an A20?
Okay, let the vultures and trolls out there begin feeding. Bring it on.
Greg
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