...Ok I posted this in the "All Motor" section and couldn't get a straight answer

I've got a '89 crx w/jdm d15b vtec motor. I just finished the swap and Im trying to check the ignition timing.

I was told that the d15b block is identical to the d15z1 and the d15b head is identical to the d16z6. So my question is which specs should I time it to?

D16z6- 16* BTDC (RED) at 670 rpm

D15z1- 16* BTDC (RED) at 600 rpm

I know there isnt much of a difference besides the rpm but Ive got it timed to 16* BTDC @ 700 rpm and when i put it under a load (heater, lights, wipers, etc..) the timing goes to about 0* BTDC @ 700 rpm.

Does this sound right to anyone?

 

no one has any suggestions?

 

c'mon this is honda-tech...

normally i'll have 20 replies by now

 

16 Degrees is what i heard aswell, not much more than that.

 

yeah i get that much... for the most part all d-series are between 16-20* BDTC

but i dont get why its way off under a load (lights, heater, wipers, etc...)

 

lame...