I have a b17 crank and a b16 crank and cant remember which one is which, is there any way to tell the difference between the two?

 

ok, don't quote me on this, but I know that the b16 and b17 block are the same. And the B17 is destroked for an under-squared motor, so the main journals on the B17 should have smaller diamater than the B16.

You might be able to use the numbers on the crank, they extrapolate into the honda bearing color codes.
-PHiZ

 

The B17 will have a longer stroke. And speaking of which, you wouldn't want to sell the B17 crank would you?

 

Yeah, looks like I had my terminolgy reversed.

Rod length / Stroke(determined by crank) == R/S ratio


B16:
134mm/77.4 == 1.73

B17:
132mm/81.4 == 1.67

So the B17 does have a longer stroke (81.4 > 77.4). But that reduces the rod stroke ratio, which is what I guess I was thinking of.

And as far as oversquare/undersquare, that has to do with BORE*STROKE, so I was talking out my *** on that topic.

So, my new understanding is that the stoke is increased by increasng the offset of the rod journal from the centerline of the crank.

Sorry for the bad info, I welcome any and all corrections.
-PHiZ

 

I used to want to sell it cause i had no use for it, but now im doing an lsvtec and im using the b17 crank to help with the r/s ratio. I know that using the b17 crank will destroke my motor but i will bore out the cyclinders and put the biggest pistons i can (safely) and maybe some darton sleeves. But if my plans change ill post it for sale on this site.

 

Thanks for all the help guys!(or girls)

 

In either case (b16a/b17 crank) i "think" you will need custom rods.

the b17 will require custom length rods to fit in the ls block

the b16A crank will use b16B length dimensions, but will require the smaller b16a journal dimensions

 

there is a way to visually tell the difference between a B16 & B17 cranks.

Take note of the counterweights on either crank:
(sorry if the pics take a few moments to load)





dc231,

I have a clean *** B17 crank for sale if you're interested. Crank only, been checked and cleaned/polished. Hit me up if you're interested. I have pics.

 

It looks like you spun the bearing on the B17's rod #2!!!

Funny the B17 has bigger counterweights; I would of thought the B16 would have bigger counterweights to aid in revving.

 

[B]THANKS KATMAN [B] that really helps (I love Jdmhondaparts.com) now ive heard about needing custom length rods have any ideas?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LudeyKrus &raquo;</TD></TR><TR><TD CLASS="quote">Funny the B17 has bigger counterweights; I would of thought the B16 would have bigger counterweights to aid in revving.</TD></TR></TABLE>

Less rotational mass, plus less friction due to near perfect rod/stroke, maybe?
-PHiZ

 

What's the redline on the B17 GSR? It has to be lower than the B16.

Most people think that the less rotational mass thing is true, but actually bigger counterweights are better for a higher-revving motor.....which made me think that about that B16/B17 pic

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by towcivic &raquo;</TD></TR><TR><TD CLASS="quote"> [B]THANKS KATMAN [B] that really helps (I love Jdmhondaparts.com) now ive heard about needing custom length rods have any ideas? </TD></TR></TABLE>

your welcome.
Yes, you'll need custom rods for sure, but I don't know what exact size you'll need n' all that. sorry. I've never aided in the build up of a 1.8L block w/B17 crank before.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LudeyKrus &raquo;</TD></TR><TR><TD CLASS="quote">What's the redline on the B17 GSR? It has to be lower than the B16.

Most people think that the less rotational mass thing is true, but actually bigger counterweights are better for a higher-revving motor.....which made me think that about that B16/B17 pic</TD></TR></TABLE>

redline of a 92-93 GSR is about 8200-8300rpm.

True about heavier counterweights helping out in the high revs dept. A type-R crank is a prime example of that.