
Originally Posted by
thegreatdane
Some of you guys are confusing things a bit.
EURO B20A1 and B20A2 engines without cat are rated at 137hp but have about 145hp on the dyno. They have a 9.5:1 C/R ratio. (B20A8 with cat has a 9.4:1 C/R ratio and rated at 133hp)
All Euro B20A's are using a mechanical ignition advance and only fuel delivery is controlled by the ecu.
JDM B20A engines all have a 9.4:1 C/R ratio and are all with cat, and both run a different distributor and exhaust cam sensor than the Euro B20A's. Goldtop is rated at 160hp, blacktop is rated at 145hp.
Goldtop is running an ecu that is divided into ignition control and fuel control, seperated from eachother. Blacktop is running an ecu with fuel and ignition control combined into one unit.
Goldtop has 1 O2 sensor, egr (prelude or early goldtop might not have EGR?) and singlestage manifold. Blacktop has 2 O2 sensors in the exhaust manifold, egr and a dual stage intake manifold.
As far as cams I dont know if theres any difference between gold and blacktop I havent bothered to compare them, but I can say that swapping JDM B20A goldtop cams into a Euro B20A makes no difference, and I couldnt tell any visible differences between them either. I forgot to measure the lift though, but again no visible diff.
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