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Old 10-23-2004, 10:55 AM   #1
EdLeake
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Default B20 bottom end + B16A2 head = ...?

Some of you will have noticed a hardened b20 bottom end for sale on the forums which has been slightly modified to allow it to connected directly to b16 head.

Question, is this a sensible modification i.e. reliable and powerful? I assume its both but don't really know wat to expect especially with a stock head. Would I be better getting a stage 2 head and then consider the b20 bottom end? Can the b20 take 8400 rev limit?

The reason I like the idea is the big torque improvement I'd see from this engine mod, however I doubt it'd produce a massive HP increase. Tell me otherwise of course.

Spec looking at is:

Blue printed B20B block
85mm high com pistons
H22A injectors
balanced and lighten crank etc.
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Old 10-23-2004, 11:00 AM   #2
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Default Re: B20 bottom end + B16A2 head = ...? (EdLeake)

search man there are lots of posts about b20vtec on here...
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Old 10-23-2004, 11:28 AM   #3
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Default Re: B20 bottom end + B16A2 head = ...? (fkncivic)

Quote:
Originally Posted by fkncivic
search man there are lots of posts about b20vtec on here...
best advice i have seen all day (sad thing is u wont see the sarcasm in that)

it takes u an equal amount of time to reply SEARCH as it would to answer some of these questions. i dont get it. some of this **** is getting out of hand Click the image to open in full size.

as to answer ur question

powerful: it can be, but dont expect the reliability unless u get a full build by someone who knows what they are doing

reliability: well ive heard very mixed reviews about the b20/vtec, once again that plays into depends on who builds it.

b20 with a 8400 rpm, i wouldnt but hey u can try. Click the image to open in full size.
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Old 10-23-2004, 11:29 AM   #4
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Default Re: B20 bottom end + B16A2 head = ...? (LSturboEH2)

weak sleeves
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Old 10-23-2004, 11:36 AM   #5
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Default Re: B20 bottom end + B16A2 head = ...? (EJ7COUPE)

its really hit or miss on a b20vtec unless you have it done right. Mine never gave me a single problem and all I did was beat the living **** out of it. I took mine to 9k with a couple 10.5 pulls. Handled it like a champ.
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Old 10-23-2004, 12:31 PM   #6
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Default Re: B20 bottom end + B16A2 head = ...? (b20vtecEK)

Quote:
Originally Posted by b20vtecEK
its really hit or miss on a b20vtec unless you have it done right. Mine never gave me a single problem and all I did was beat the living **** out of it. I took mine to 9k with a couple 10.5 pulls. Handled it like a champ.
I beat the **** out of mine....and took it to 9.5 on occasion....and I had no issues....that is until a lady in a Trailblazer slammed into me at 40mph and destroyed my motor.....if I were to do it again I would LS/vtec it and build it over for what I am using it for...so it stays within its limits
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Old 10-23-2004, 12:33 PM   #7
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Default Re: B20 bottom end + B16A2 head = ...? (GTlvr82)

Quote:
Originally Posted by GTlvr82
I beat the **** out of mine....and took it to 9.5 on occasion....and I had no issues....that is until a lady in a Trailblazer slammed into me at 40mph and destroyed my motor.....if I were to do it again I would LS/vtec it and build it over for what I am using it for...so it stays within its limits
I still have my motor, thinking of dropping it in another civic to enjoy chirping 5th again. Only time will tell.
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Old 10-23-2004, 01:59 PM   #8
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Default Re: B20 bottom end + B16A2 head = ...? (EdLeake)

in 2001 i did a b20b block with a 90 sir1 b16 head and i reved it to 8500 everyday for 2 years. never had a problem except my piston rings got fried but since then i had ls vtec and a b16 while building my b20vtec. now i have the same motor just built with b20z internals and it still runs great after almost 3 years and i perfer it over the ls vtec and b16 anyday just my opinion hope it helps.. (ls vtec still is a good setup i just like the torque from the b20 a lil better)
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Old 10-24-2004, 12:24 AM   #9
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Default Re: B20 bottom end + B16A2 head = ...? (fkncivic)

Quote:
Originally Posted by LSturboEH2

best advice i have seen all day (sad thing is u wont see the sarcasm in that)

it takes u an equal amount of time to reply SEARCH as it would to answer some of these questions. i dont get it. some of this **** is getting out of hand

as to answer ur question

powerful: it can be, but dont expect the reliability unless u get a full build by someone who knows what they are doing


b20 with a 8400 rpm, i wouldnt but hey u can try.
well man honestly whenever i had a general question when i was kinda new on here i was always told to search and it is alot better to search for a variety of threads on the same topic then to sit here and have to keep checking ur post every 5 minutes to see if anyone replied... and u are supposed to search so that the forum isnt filled with faq's that are widely available in the archives..
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Old 10-24-2004, 12:57 AM   #10
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Default Re: B20 bottom end + B16A2 head = ...? (fkncivic)

and i wasnt a ******** about it and im sure the mods will agree with me on this but ok if u want me to answer his question i will.. I too am doing b20 vtec and in my searches i have found may people that daily drive and rev to 8200 rpms without thinking twice about blowing up but i have also come across the contrary... myself untill i have money to build the block i am doing upgraded rod bolts and rod bearings to help keep **** togeter..
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Old 10-24-2004, 07:13 AM   #11
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Default Re: B20 bottom end + B16A2 head = ...? (B20ZVTECHB)

Quote:
Originally Posted by B20ZVTECHB
in 2001 i did a b20b block with a 90 sir1 b16 head and i reved it to 8500 everyday for 2 years. never had a problem except my piston rings got fried but since then i had ls vtec and a b16 while building my b20vtec. now i have the same motor just built with b20z internals and it still runs great after almost 3 years and i perfer it over the ls vtec and b16 anyday just my opinion hope it helps.. (ls vtec still is a good setup i just like the torque from the b20 a lil better)
correct me if i am mistaken, but the b20b (not b20b4) was the same as a b20z and b20z2. it didnt have the 8.8:1 compression it had the 9.2:1 (or whatever it is). im pretty sure i read that somewhere but maybe it was flase. Click the image to open in full size.
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Old 10-24-2004, 10:59 AM   #12
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Default Re: B20 bottom end + B16A2 head = ...? (LSturboEH2)

the b20 z came with higher compression and more power.
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Old 10-28-2004, 02:51 PM   #13
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Default Re: B20 bottom end + B16A2 head = ...? (fkncivic)

i just bought a bone stock 2000 si and i want to do that B20vtec convertion, and as i am not a wrench and i dont know anything about cars . .

if anyone in AZ can point me to a shop that might do it the "right" way with the right tranny i would appreciate it . .
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Old 10-28-2004, 03:32 PM   #14
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Default Re: B20 bottom end + B16A2 head = ...? (dj_BUDDAH)

My B20 is going on 2 years with no problems. I take it to 8500-9000rpm constantly. I say go with it. Click the image to open in full size.
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Old 10-30-2004, 10:07 AM   #15
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Default Re: B20 bottom end + B16A2 head = ...? (racer_x_eg)

Quote:
Originally Posted by racer_x_eg
My B20 is going on 2 years with no problems. I take it to 8500-9000rpm constantly. I say go with it. Click the image to open in full size.
is it b20z or b and also what is your bottom end setup, is it built?
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Old 11-09-2004, 10:30 AM   #16
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Default Re: B20 bottom end + B16A2 head = ...? (b20vtecEK)

ok so you say that you have not had problems with your b20 setup but that you would build the ls/vtec if you had it to do over.... was that a money driven decision or just a personal choice?
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Old 11-09-2004, 07:23 PM   #17
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Default

guy on here had a stock b20b bottom, ported stock b16 head w/ itr cams. made 197whp 152tq with hondata. drove it to 8k for like 3 years. never busted it. just went bigger with another build.


Modified by yaya at 3:58 PM 11/10/2004
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Old 12-07-2011, 10:28 AM   #18
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Default Re: B20 bottom end + B16A2 head = ...?

Quote:
Originally Posted by EdLeake View Post
Some of you will have noticed a hardened b20 bottom end for sale on the forums which has been slightly modified to allow it to connected directly to b16 head.

Question, is this a sensible modification i.e. reliable and powerful? I assume its both but don't really know wat to expect especially with a stock head. Would I be better getting a stage 2 head and then consider the b20 bottom end? Can the b20 take 8400 rev limit?

The reason I like the idea is the big torque improvement I'd see from this engine mod, however I doubt it'd produce a massive HP increase. Tell me otherwise of course.

Spec looking at is:

Blue printed B20B block
85mm high com pistons
H22A injectors
balanced and lighten crank etc.
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Old 12-07-2011, 10:29 AM   #19
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Default Re: B20 bottom end + B16A2 head = ...?

Possibly b series injectors would be better idk what the h series are but the b are 240cc Is the b20 bottom good with b16a head im wanting to do the same thing
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Old 12-07-2011, 10:54 AM   #20
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Default Re: B20 bottom end + B16A2 head = ...?

http://honda-tech.com/showthread.php?t=1676914

Read this
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Old 12-07-2011, 01:32 PM   #21
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Default Re: B20 bottom end + B16A2 head = ...?

@rednwhiterocket, way to bump a 7 year old thread you tard.

And yes, read the link esoteric posted, then read again.
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Old 12-07-2011, 01:35 PM   #22
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Default Re: B20 bottom end + B16A2 head = ...?

holy ****, i need to start looking at the dates of these threads..

Click the image to open in full size.
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Old 12-07-2011, 01:45 PM   #23
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Default Re: B20 bottom end + B16A2 head = ...?

lol i started reading the op then was like 2004 wtf?!
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Old 12-07-2011, 01:51 PM   #24
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Default Re: B20 bottom end + B16A2 head = ...?

Quote:
Originally Posted by EdLeake View Post
Some of you will have noticed a hardened b20 bottom end for sale on the forums which has been slightly modified to allow it to connected directly to b16 head.

Question, is this a sensible modification i.e. reliable and powerful? I assume its both but don't really know wat to expect especially with a stock head. Would I be better getting a stage 2 head and then consider the b20 bottom end? Can the b20 take 8400 rev limit?

The reason I like the idea is the big torque improvement I'd see from this engine mod, however I doubt it'd produce a massive HP increase. Tell me otherwise of course.

Spec looking at is:

Blue printed B20B block
85mm high com pistons
H22A injectors
balanced and lighten crank etc.
Don't need to bore that much from the original 84mm. don't thin out the wall and keep it 84mm to 84.5mm maximum.

H22A injectors are only 290cc . Won't help much.

Here's EVERYTHING YOU NEED TO KNOW..
http://honda-tech.com/showthread.php?t=1676914
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