is the bottom end of a crx si the same as a dx??

 

No, the Si is 1.6L and the DX is 1.5L.

 

there is 1.6 dx too. 88-91 the si and dx bottom are different.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 89a6T &raquo;</TD></TR><TR><TD CLASS="quote">there is 1.6 dx too. 88-91 the si and dx bottom are different.</TD></TR></TABLE>

And what 88-91 DX model came with a 1.6L?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Redline130 &raquo;</TD></TR><TR><TD CLASS="quote">

And what 88-91 DX model came with a 1.6L?</TD></TR></TABLE>

None from factory. But my DX will soon have a 1.6 heh

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 89a6T &raquo;</TD></TR><TR><TD CLASS="quote">there is 1.6 dx too. 88-91 the si and dx bottom are different.</TD></TR></TABLE>

And its posts like these that I think should not be made in the first place....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 89a6T &raquo;</TD></TR><TR><TD CLASS="quote">there is 1.6 dx too. 88-91 the si and dx bottom are different.</TD></TR></TABLE>

i think the only dx's that came with 1.6's were the 96+ or it could be the 92+'s also

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Redline130 &raquo;</TD></TR><TR><TD CLASS="quote">

And what 88-91 DX model came with a 1.6L?</TD></TR></TABLE>

he never specified 88-91. he said dx......no year or model.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 89a6T &raquo;</TD></TR><TR><TD CLASS="quote">

he never specified 88-91. he said dx......no year or model. </TD></TR></TABLE>

Being that this is posted in the EF forum and he's talking about a CRX Si, it can be infered that he is talking about 88-91 motors.

 

Are the blocks the same? Can you put an Si(1.6) crank and pistons in the DX(1.5) block ?

 

YOU CAN SWAP MOST D SERIES PART YOU NEED TO FIND SOMEONE THAT IS IN TO BUILDIN MINE ME'S THEY WILL KNOW BEST

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sikocivic &raquo;</TD></TR><TR><TD CLASS="quote">Are the blocks the same? Can you put an Si(1.6) crank and pistons in the DX(1.5) block ?</TD></TR></TABLE>

Blocks are NOT the same. They have different cranks, rods, pistons. Not sure if you can swap the parts though.

 

NO! nothing in the bottom end of a 1.5 and 1.6 are able to be swapped but the pistons..that is all...rods, crank..there both different...the crank has smaller main journals on the 1.5 and the rod ends are smaller in the 1.5 also.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phatrick2332 &raquo;</TD></TR><TR><TD CLASS="quote">NO! nothing in the bottom end of a 1.5 and 1.6 are able to be swapped but the pistons..that is all...rods, crank..there both different...the crank has smaller main journals on the 1.5 and the rod ends are smaller in the 1.5 also.</TD></TR></TABLE>

Pistons cannot be swapped...d15 pistons have a 3mm lower wrist pin location meaning that if they are put in a d16 block they will bang into the head and bend all the rods!

 

actually the dx pistons (pm3) can be used in the 1.6 block..they will bump your compression into the 12's and stick out of the block about 1mm. Dont ask how i kno

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phatrick2332 &raquo;</TD></TR><TR><TD CLASS="quote">actually the dx pistons (pm3) can be used in the 1.6 block..they will bump your compression into the 12's and stick out of the block about 1mm. Dont ask how i kno </TD></TR></TABLE>



The 1.5L rods are 134MM and the 1.6 rods are 137mm, and the wrist pin location on the 1.5L pistons is 3mm LOWER. So...unless you are using two headgaskets then your pistons should be hitting your head...or maybe they are and you just dont know it

 

Does anyone have shelf pistons for the D15 (DX motor) as well as aftermarket rods?

Seems they are only available for the D16

 

https://honda-tech.com/zerothread?id=667290
read.


If you do the math and figure out deck height for a 1.6 with 1.6 rods and the dx pistons...it will come to -0.03937(aka 1mm out of the bore).

Im running an a6 block with dx pistons and a z6 head, a6 headgasket...been clayed and has no issue with valve clearence or "hitting the head".

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phatrick2332 &raquo;</TD></TR><TR><TD CLASS="quote"> https://honda-tech.com/zerothread?id=667290
read.
</TD></TR></TABLE>

What do you want me to read? I'm not sifting through 7 pages.

Interesting information nonetheless...The A6 head gasket is apparently 1.21mm...so I guess that would work... With a Y8 gasket however, your pistons would be slapping the head. But damn... .21mm of clearance...thats pushing it

 

clearence is clearence