I need a little help here, i'v got a buddy with an automatic-trans D15B7 motor, all stock... he sais he needs a new crank shaft

my cousin has a D16Z6, the other night we were rushing to change the oil in the dark and accidentally left the old seal where the oil filter was, so we double sealed it(not knowing until it was examined when the motor was blown)... next day he called me, it threw a rod and got a hole in the oil pan...

we were wondering if it would be possible to put the crankshaft from the D16Z6 into the D15B7...

thanks for any and all help/replies

 

Different sized crank journals all around. It won't fit without major machining which would likely exceed the value of just replacing the engine altogether.

 

Damn that sucks, I had plans of using a z6 crank in my d15b. Oh well.

 

I thought only the rod journals were bigger on the Z6. I thought the mains were the same size or is that just the vtec D15B?

 

Regardless of journal size, if the Z6 threw a rod, I can damn near promise you that that crankshaft is toast lol...

 

Thanks, guys... would it be possible to put the D15B7 auto-transmission on the D16Z6?

 

Unfortunately that's highly problematic.

The ECU is transmission specific so the ECU for the D16Z6 won't be compatible with the B7 auto transmission and vice versa. Even if the Z6 was an automatic you can't cross swap the ECU's to a different tranny. At least that's how I've come to understand it.

Manual trannies is where all the swapping, modding and flexibility is at.

You would have to run your B7 ECU on the Z6 block but that would mean no vtec and it would try and run the 1.6 liter as a 1.5 liter.

Also, I thought you said the Z6 threw a rod, that needs serious work to get running I would think.

 

That really doesn't apply here, it does apply to a lot of OBD2 stuff, but the '92 - '95 D-series automatics are swappable. D15B7 trans with preferable due to being geared lower. The D16Z6 is geared a bit higher since the engine makes enough power that it can haul itself along at lower RPM. (exactly the opposite is true for the manual transmission variants)

 

Ahhh okay, thanks for clarifying.

So the swap problem is 96 on up.... That's good information to know especially since my wife's civic is a B7 auto tranny. I was under the impression that if it died, I'd be up a creek without a paddle.

Glad to know we sneak in before the flexibility was removed.