B16B and B16A crank comparison..... (lots of pics)
Thread Starter
Honda-Tech Member
Joined: Apr 2002
Posts: 2,750
Likes: 0
From: Marysville, WA, USA
B16B and B16A crank comparison..... (lots of pics)
well i have seen some post in the past about B16B and B16A cranks, well i bought a B16B crank for a upcoming project of mine so i took some pics of both... found some intesting things...
first of which was that the B16B crank seemed heavy, i went and grabbed my B16A2 crank, and sure enough the B16B crank is about 5lbs heaver. not sure exactly the wieghts cuz someone apears to have set something too heavy on the scale and messed it up...
i tried to take all the pics from the same direction...
looking at the crank the B16B crank has more material on it, the counter wieghts are bigger, there are no indentions in the wights like on the B16A2. my guess is that is for the extra weight of the longer rods and for more balancing?
also the measurement on the journals... the reason i have the B16A2 crank is i assumed that it would be the same (other than maybe some other differnance that you can see above) but the B16B uses the GSR/ITR sized rod bearings...
well this will be my first all motor build...hopefully it turns out nice...
Modified by turbohf at 9:53 AM 12/21/2005
first of which was that the B16B crank seemed heavy, i went and grabbed my B16A2 crank, and sure enough the B16B crank is about 5lbs heaver. not sure exactly the wieghts cuz someone apears to have set something too heavy on the scale and messed it up...
i tried to take all the pics from the same direction...
looking at the crank the B16B crank has more material on it, the counter wieghts are bigger, there are no indentions in the wights like on the B16A2. my guess is that is for the extra weight of the longer rods and for more balancing?
also the measurement on the journals... the reason i have the B16A2 crank is i assumed that it would be the same (other than maybe some other differnance that you can see above) but the B16B uses the GSR/ITR sized rod bearings...
well this will be my first all motor build...hopefully it turns out nice...
Modified by turbohf at 9:53 AM 12/21/2005
Thread Starter
Honda-Tech Member
Joined: Apr 2002
Posts: 2,750
Likes: 0
From: Marysville, WA, USA
Re: (clean rice)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by clean rice »</TD></TR><TR><TD CLASS="quote">Are you going to be using the 6B crank in the A block or what? What is your build going to consist of? Thanks for sharin the pics 
</TD></TR></TABLE>
i will be using a B18C1 block, B16B crank, B16B rods, PCT pistons, PR3 head (hopefully) milled with springs/retainers (thinking RM), not sure on cams probly start with ITR/CTR cams and see what that gets me...
im building a B16B....
someting odd to note: the B16B rods caps have P72 cast into them??? but my P72/B18C1 rods are shorter (both measure out to the numbers on Zealautowerks calculator)
</TD></TR></TABLE>i will be using a B18C1 block, B16B crank, B16B rods, PCT pistons, PR3 head (hopefully) milled with springs/retainers (thinking RM), not sure on cams probly start with ITR/CTR cams and see what that gets me...
im building a B16B....
someting odd to note: the B16B rods caps have P72 cast into them??? but my P72/B18C1 rods are shorter (both measure out to the numbers on Zealautowerks calculator)
Honda-Tech Member
Joined: Jan 2004
Posts: 2,733
Likes: 0
From: Unknown
Re: (DavidR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DavidR »</TD></TR><TR><TD CLASS="quote">Just curious why you want to build a B16b?</TD></TR></TABLE>
he can do whatever he wants to! GOSH!!
he can do whatever he wants to! GOSH!!
Thread Starter
Honda-Tech Member
Joined: Apr 2002
Posts: 2,750
Likes: 0
From: Marysville, WA, USA
Re: (SkRiBLaH)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SkRiBLaH »</TD></TR><TR><TD CLASS="quote">
he can do whatever he wants to! GOSH!!</TD></TR></TABLE>
i like that awnser, i should use that one
why am i building a B16B?.... simple, i cant afford (well, wont spend the 4500bucks) a B16B. i have never 'built' and all motor setup. i say 'built' cuz i have had many all motor cars, but they where just waiting on fund/time to put my turbo kit on
and on the same note i am building another turbo motor and it will replace this motor when its ready. if i like this setup it will go into my DB2.
i really like the B16B motor setup, i really like the idea of smooth high revs that the engine will not mind, my LSVTEC hated being reved i could feel it. i think Honda had the right idea de-stroking the ITR motor, but they care about emissions i dont. so i will be doing this with motor more compression, bigger cams, and more throttle bodies
....oh and for cheaper than what you can buy the swap for
also, i think i have read just about every B16B thread on Honda-Tech so your "swap the crank for a GSR/ITR/LS crank" comments are not needed... but your more than welcome to swap your B16B crank out, i have a GSR crank/rods for sale too if you need them and thanks to who ever donated this crank
as for WHP goals and whatever...there are NONE...it will make the power it makes. i would say more than the local kids with there B18C1 swaps (with ITR/CTR pistons, and tipical ricer mods), but im sure it will be faster either way... i will be going to the dyno and will be sure to post the charts whatever the outcome...
he can do whatever he wants to! GOSH!!</TD></TR></TABLE>
i like that awnser, i should use that one
why am i building a B16B?.... simple, i cant afford (well, wont spend the 4500bucks) a B16B. i have never 'built' and all motor setup. i say 'built' cuz i have had many all motor cars, but they where just waiting on fund/time to put my turbo kit on
and on the same note i am building another turbo motor and it will replace this motor when its ready. if i like this setup it will go into my DB2.i really like the B16B motor setup, i really like the idea of smooth high revs that the engine will not mind, my LSVTEC hated being reved i could feel it. i think Honda had the right idea de-stroking the ITR motor, but they care about emissions i dont. so i will be doing this with motor more compression, bigger cams, and more throttle bodies
....oh and for cheaper than what you can buy the swap for also, i think i have read just about every B16B thread on Honda-Tech so your "swap the crank for a GSR/ITR/LS crank" comments are not needed... but your more than welcome to swap your B16B crank out, i have a GSR crank/rods for sale too if you need them
and thanks to who ever donated this crank as for WHP goals and whatever...there are NONE...it will make the power it makes. i would say more than the local kids with there B18C1 swaps (with ITR/CTR pistons, and tipical ricer mods), but im sure it will be faster either way... i will be going to the dyno and will be sure to post the charts whatever the outcome...
Trending Topics
Crazy Honda Guy
Joined: Sep 2003
Posts: 8,025
Likes: 19
From: Calgary, AB, Canada
I have a B16B block and am doing the exact opposit of what you are doing, ha ha.
The reson the B16B crank is heavier, is because it is 20% more stable after 8000 rpm. That engine is made to rev past 9000 rpm, thats where all the power is.
The reson the B16B crank is heavier, is because it is 20% more stable after 8000 rpm. That engine is made to rev past 9000 rpm, thats where all the power is.
Member
Joined: Aug 2002
Posts: 3,864
Likes: 1
From: Wilmington, De, USA
Re: (BlUeHoOdCiViC99)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlUeHoOdCiViC99 »</TD></TR><TR><TD CLASS="quote">ctr crank and the itr would be the same right </TD></TR></TABLE>
No, they are different.
No, they are different.
Thread Starter
Honda-Tech Member
Joined: Apr 2002
Posts: 2,750
Likes: 0
From: Marysville, WA, USA
Re: (Deetz)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Deetz »</TD></TR><TR><TD CLASS="quote">I have a B16B block and am doing the exact opposit of what you are doing, ha ha.
The reson the B16B crank is heavier, is because it is 20% more stable after 8000 rpm. That engine is made to rev past 9000 rpm, thats where all the power is.</TD></TR></TABLE>
how much you want for that crank/rods? (shoot me a PM). thats the reason we came up with on the weight differenance too...plan on reving past 9000 though...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlUeHoOdCiViC99 »</TD></TR><TR><TD CLASS="quote">ctr crank and the itr would be the same right </TD></TR></TABLE>
no a ITR has a 87.2mm stroke and a CTR has a 77.4mm stoke
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91’ LS-VTEC »</TD></TR><TR><TD CLASS="quote">Did not know the diffrance between the B16B & B16A cranks. Thanx for sharing.
Keep us posted on this build. </TD></TR></TABLE>
no problem, and i will keep posted...
The reson the B16B crank is heavier, is because it is 20% more stable after 8000 rpm. That engine is made to rev past 9000 rpm, thats where all the power is.</TD></TR></TABLE>
how much you want for that crank/rods? (shoot me a PM). thats the reason we came up with on the weight differenance too...plan on reving past 9000 though...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlUeHoOdCiViC99 »</TD></TR><TR><TD CLASS="quote">ctr crank and the itr would be the same right </TD></TR></TABLE>
no a ITR has a 87.2mm stroke and a CTR has a 77.4mm stoke
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91’ LS-VTEC »</TD></TR><TR><TD CLASS="quote">Did not know the diffrance between the B16B & B16A cranks. Thanx for sharing.
Keep us posted on this build. </TD></TR></TABLE>
no problem, and i will keep posted...
Re: (turbohf)
Awww...damn. I was hoping to buy a B18C block and throw a B16A crank in there before and go with some ctr rods and pistons. 
So in short, I must find a B16B crank to do this then, right?
So in short, I must find a B16B crank to do this then, right?
Trial User
Joined: Apr 2000
Posts: 1,345
Likes: 1
From: Toronto, On, Canada
Re: B16B and B16A crank comparison..... (turbohf)
thanks a ton for taking the time to do this. you know how long I've waited to see a b16b rod length confirmation ? LOL
so basically the b16b crank is an 87.2 stroke itr crank.
so basically the b16b crank is an 87.2 stroke itr crank.
Thread Starter
Honda-Tech Member
Joined: Apr 2002
Posts: 2,750
Likes: 0
From: Marysville, WA, USA
Re: (-=Zeqs=-)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by -=Zeqs=- »</TD></TR><TR><TD CLASS="quote">Awww...damn. I was hoping to buy a B18C block and throw a B16A crank in there before and go with some ctr rods and pistons. So in short, I must find a B16B crank to do this then, right?
</TD></TR></TABLE>
where where you going to find some CTR rods? i didnt find any that didnt have a CTR crank or full swap bolted to them... but yes you need the crank and rods togther.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Michael Delaney »</TD></TR><TR><TD CLASS="quote">thanks a ton for taking the time to do this. you know how long I've waited to see a b16b rod length confirmation ? LOL
so basically the b16b crank is an 87.2 stroke itr crank. </TD></TR></TABLE>
no problem, felt it was my duty (btw the exact legnth is like 142.3-142.5mm).... NO, an ITR crank is 87.2mm and a CTR crank is 77.4mm... so its like an ITR crank with a 77.4mm stroke...
So in short, I must find a B16B crank to do this then, right?</TD></TR></TABLE>
where where you going to find some CTR rods? i didnt find any that didnt have a CTR crank or full swap bolted to them... but yes you need the crank and rods togther.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Michael Delaney »</TD></TR><TR><TD CLASS="quote">thanks a ton for taking the time to do this. you know how long I've waited to see a b16b rod length confirmation ? LOL
so basically the b16b crank is an 87.2 stroke itr crank. </TD></TR></TABLE>
no problem, felt it was my duty (btw the exact legnth is like 142.3-142.5mm).... NO, an ITR crank is 87.2mm and a CTR crank is 77.4mm... so its like an ITR crank with a 77.4mm stroke...
Trial User
Joined: Apr 2000
Posts: 1,345
Likes: 1
From: Toronto, On, Canada
Re: (turbohf)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbohf »</TD></TR><TR><TD CLASS="quote">
NO, an ITR crank is 87.2mm and a CTR crank is 77.4mm... so its like an ITR crank with a 77.4mm stroke...</TD></TR></TABLE>
I see, then, the B16B block deck height is the same as the ITR.
https://honda-tech.com/zerothread?id=106322
https://honda-tech.com/zerothread?id=107759
As you can see in 2002 I asked this question but only katman's answer was direct and as it turns out wrong.
The common way that we deduced the b16b length was to presume that it used an ITR block and worked out the number indirecty.
if the ITR uses an 87.2 mm crank (known for sure at that time for sure) and the CTR uses a 77mm crank (known at that time) , the difference is 10.2 mm. Therefore, the crank throw would have to be 5.1 mm longer on the CTR. Since the ITR rod length was 137.9 mm (known at that time), you had to deduce that the CTR rod had to be 137.9 + 5.1 mm = 143 mm.
No one and I mean no-one up until your post on any honda board (Asian, European, North American, South American, African...) confirmed it with a real world measurement. It was all speculation.
Your photo is pretty much archived and bookmarked as physical proof of what is the real rod length.
You should be proud.
Cheers
NO, an ITR crank is 87.2mm and a CTR crank is 77.4mm... so its like an ITR crank with a 77.4mm stroke...</TD></TR></TABLE>
I see, then, the B16B block deck height is the same as the ITR.
https://honda-tech.com/zerothread?id=106322
https://honda-tech.com/zerothread?id=107759
As you can see in 2002 I asked this question but only katman's answer was direct and as it turns out wrong.
The common way that we deduced the b16b length was to presume that it used an ITR block and worked out the number indirecty.
if the ITR uses an 87.2 mm crank (known for sure at that time for sure) and the CTR uses a 77mm crank (known at that time) , the difference is 10.2 mm. Therefore, the crank throw would have to be 5.1 mm longer on the CTR. Since the ITR rod length was 137.9 mm (known at that time), you had to deduce that the CTR rod had to be 137.9 + 5.1 mm = 143 mm.
No one and I mean no-one up until your post on any honda board (Asian, European, North American, South American, African...) confirmed it with a real world measurement. It was all speculation.
Your photo is pretty much archived and bookmarked as physical proof of what is the real rod length.
You should be proud.
Cheers
Honda-Tech Member
Joined: Jan 2005
Posts: 365
Likes: 0
From: Kingston, Jamaica
Re: B16B and B16A crank comparison..... (turbohf)
yup the itr and the b16b uses the same blockits a common swap here in jamaica to take out the b16b crank and swap it with a with a b18c crank to have the b16 look with the b18 power
Thread Starter
Honda-Tech Member
Joined: Apr 2002
Posts: 2,750
Likes: 0
From: Marysville, WA, USA
Re: (Michael Delaney)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Michael Delaney »</TD></TR><TR><TD CLASS="quote">
I see, then, the B16B block deck height is the same as the ITR.
https://honda-tech.com/zerothread?id=106322
https://honda-tech.com/zerothread?id=107759
As you can see in 2002 I asked this question but only katman's answer was direct and as it turns out wrong.
The common way that we deduced the b16b length was to presume that it used an ITR block and worked out the number indirecty.
if the ITR uses an 87.2 mm crank (known for sure at that time for sure) and the CTR uses a 77mm crank (known at that time) , the difference is 10.2 mm. Therefore, the crank throw would have to be 5.1 mm longer on the CTR. Since the ITR rod length was 137.9 mm (known at that time), you had to deduce that the CTR rod had to be 137.9 + 5.1 mm = 143 mm.
No one and I mean no-one up until your post on any honda board (Asian, European, North American, South American, African...) confirmed it with a real world measurement. It was all speculation.
Your photo is pretty much archived and bookmarked as physical proof of what is the real rod length.
You should be proud.
Cheers</TD></TR></TABLE>
yeah like i said i have read shitloads of posts on this subject, and have found many awnsers on the accual legnth of a B16B/PCT rod. it looks to be that the ZealAutowerks calculator is correct now with its rod legnth and compression hieghts on the CTR/B16B/PCT. i have been using that one for all my calcuations lately
dont know why no one has done this before? im not the first to have a B16B crank/rods in my hands... it would be awesome if someone could put this in the link/FAQ thread
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr.Wizard »</TD></TR><TR><TD CLASS="quote">But a B16B and a B16A use different size rod bearings.The B16B uses the same as a GSR or ITR.And the B16A uses the wider bearings.LS style.</TD></TR></TABLE>
yeah...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ghostskinner »</TD></TR><TR><TD CLASS="quote">yup the itr and the b16b uses the same blockits a common swap here in jamaica to take out the b16b crank and swap it with a with a b18c crank to have the b16 look with the b18 power </TD></TR></TABLE>
price, avalablity, shipping quotes to 98203 via PM please....thanks...i would like another crank/rods for turbo testing
I see, then, the B16B block deck height is the same as the ITR.
https://honda-tech.com/zerothread?id=106322
https://honda-tech.com/zerothread?id=107759
As you can see in 2002 I asked this question but only katman's answer was direct and as it turns out wrong.
The common way that we deduced the b16b length was to presume that it used an ITR block and worked out the number indirecty.
if the ITR uses an 87.2 mm crank (known for sure at that time for sure) and the CTR uses a 77mm crank (known at that time) , the difference is 10.2 mm. Therefore, the crank throw would have to be 5.1 mm longer on the CTR. Since the ITR rod length was 137.9 mm (known at that time), you had to deduce that the CTR rod had to be 137.9 + 5.1 mm = 143 mm.
No one and I mean no-one up until your post on any honda board (Asian, European, North American, South American, African...) confirmed it with a real world measurement. It was all speculation.
Your photo is pretty much archived and bookmarked as physical proof of what is the real rod length.
You should be proud.
Cheers</TD></TR></TABLE>
yeah like i said i have read shitloads of posts on this subject, and have found many awnsers on the accual legnth of a B16B/PCT rod. it looks to be that the ZealAutowerks calculator is correct now with its rod legnth and compression hieghts on the CTR/B16B/PCT. i have been using that one for all my calcuations lately
dont know why no one has done this before? im not the first to have a B16B crank/rods in my hands... it would be awesome if someone could put this in the link/FAQ thread
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr.Wizard »</TD></TR><TR><TD CLASS="quote">But a B16B and a B16A use different size rod bearings.The B16B uses the same as a GSR or ITR.And the B16A uses the wider bearings.LS style.</TD></TR></TABLE>
yeah...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ghostskinner »</TD></TR><TR><TD CLASS="quote">yup the itr and the b16b uses the same blockits a common swap here in jamaica to take out the b16b crank and swap it with a with a b18c crank to have the b16 look with the b18 power </TD></TR></TABLE>
price, avalablity, shipping quotes to 98203 via PM please....thanks...i would like another crank/rods for turbo testing
Crazy Honda Guy
Joined: Sep 2003
Posts: 8,025
Likes: 19
From: Calgary, AB, Canada
Re: B16B and B16A crank comparison..... (eViL-DaRkNeSs)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eViL-DaRkNeSs »</TD></TR><TR><TD CLASS="quote">Hi there
Does anyone know the part number of B16b Crank?
Where can i buy it?
</TD></TR></TABLE>
I have 2 of them, pm'd
Does anyone know the part number of B16b Crank?
Where can i buy it?
</TD></TR></TABLE>
I have 2 of them, pm'd
