Hello I've recently blown my d15b I have a d15b2 that smoked I don't know if there is any difference between the two if I'm going to rebuild would the d15 b be any better than the b2?

 

There are three different versions of the D15B engine. The HP is either 103 or 130 depending on if it has VTEC. The D15B2 is 92hp.

You can visit wiki for more detailed information about each engine.

https://en.m.wikipedia.org/wiki/Honda_D_engine





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d15b is JDM .d15b2 is eudm or usdm or wtvr other market..
All 4 digit engine codes are JDM ... and usually JDM engines have higher horsepower and compression ratios than other markets models

 

No, four digit engine codes are not always JDM. Yet another rumor that needs to die.

 

Actually I believe there are 4 versions of the JDM D15B. Dual Carb, Dual vtec (3 stage), non-vtec and vtec (2 stage).

Of note, I know with some certainty that the non vtec and the dual carb has the same bottom end as the D15B2, small rod, small journal motor.

I believe the vtec D15B has the larger rod and journals like the D16Z6.

I am not sure of the bottom end of the Dual vtec model but I suspect it's superior to the D15B2 bottom end.

 

The dual vtec / three stage motor is rumored to have the same bearings and what not as the z6. I've never seen pictures of anyone mic'ing it or anything like that though.