b16b vs b16a crank


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xchipx

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Aug 15, 2008
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Not much info is brought up by searching, here or anywhere.
So.
b16b crank vs b16a crank. Whats the difference?

From what i gather, different bearing widths. But everything else is the same. They have differnt counterweights too.
But what about the overall weight etc?
 
16B crank is heavier because of the additional counterweights.
 
ahhh really? i thought it would be lighter guys for less parasitic loses
 
no, the 18C(R) also "suffers" from this....the R cranks are all heavier for better balancing/stability at high revs.
 
Infact thinking about the true definition of the term, youd usually use it to describe parts after the flywheel.
Parasitic loses are items such as ancillaries like power steering , aircon, alternator ( all sapping away at that power figure )

Thinking about it, i probably actually used it wrongly.
Its rotating mass , which is one of the factors ( such as friction etc ) inside an engine that also saps away power. Not sure whether you class this as a parasitic loss, or just engine design
But people know what i meant, either way . :)
 
Also it leads me to question : how are there quite a few guys pushing silly rpm on the b16A crank without really running into porblems with the ( weaker ) lighter crank?
Im thinking something to do with the deck height / rod length/ stroke ( and rod-stroke ratio itself ) perhaps putting extra strain on the type R cranks, thus honda reinforcing these?

This also brings me to the block brace that the type R's have. The b16a doesn't. Quite a few guys ive seen are revving past even the type R rev-limiter range, and havn't had issues with blown head gaskets, cracked liners etc. Perhaps this is just luck? Or perhaps the shorter deck on the b16A is less prone to twist or flex apposed to the slightly longer type R blocks.
Wonder if anyone knows the answer to that ?

fyi, my stock b16a crank will be hitting 9500rpm shortly ;)
 
Last edited:
xchipx said:
who said anything about sir and type r
Click to expand...

you asked the difference, he is telling you what cars they come in, thats a difference so he is answering your question.

xchipx said:
Also it leads me to question : how are there quite a few guys pushing silly rpm on the b16A crank without really running into porblems with the ( weaker ) lighter crank?
Im thinking something to do with the deck height / rod length/ stroke ( and rod-stroke ratio itself ) perhaps putting extra strain on the type R cranks, thus honda reinforcing these?

This also brings me to the block brace that the type R's have. The b16a doesn't. Quite a few guys ive seen are revving past even the type R rev-limiter range, and havn't had issues with blown head gaskets, cracked liners etc. Perhaps this is just luck? Or perhaps the shorter deck on the b16A is less prone to twist or flex apposed to the slightly longer type R blocks.
Wonder if anyone knows the answer to that ?

fyi, my stock b16a crank will be hitting 9500rpm shortly ;)
Click to expand...


b16a crank is in NO WAY weaker than a b16b crank.
 
Sorry for resurrecting the dead but,
Is there a major size difference between the width of the b16b rod bearings and the b16a's?
 
Hey guy's .. i have a question .. is there a difference between the b16b and b16a crank pulley? i need a crank pulley for my b16b but a b16a is available. i don't even have a b16b pulley to match it up with :(
 
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