I've searched some, but also need a quick answer. I shot a rod in my 90 CRX si D16a6 block this past weekend. I can get a good D15 block real cheap. Just wondering what are the differences with the block? No issues with putting the D16a6 head and intake on either right?

 

the D15 block is not the same as a D16 - not as tall

 

which is taller the d16?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by exsinnovation &raquo;</TD></TR><TR><TD CLASS="quote">which is taller the d16?</TD></TR></TABLE>

yep. 3mm taller.

 

Thanks...I knew something was different!

 

but to answer your question, It will work as a replacement, The blocks are almost the same a few more differences than listed above but, The A6 and D15 heads are identical, the difference being the cam & cam gear.

as for the block itself, The Main journals are smaller, so it will not accept a D16 crank.
But the Rods are the same.

 

Thanks Kryogen! Just what I was looking for!