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.

Re: B20 bottom end + B16A2 head = ...? (EdLeake)
 

search man there are lots of posts about b20vtec on here...

Re: B20 bottom end + B16A2 head = ...? (fkncivic)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fkncivic &raquo;</TD></TR><TR><TD CLASS="quote">search man there are lots of posts about b20vtec on here...</TD></TR></TABLE>

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 shit is getting out of hand https://honda-tech.com/forums/images...s/emthdown.gif

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. https://honda-tech.com/forums/images...s/emsmilep.gif

Re: B20 bottom end + B16A2 head = ...? (LSturboEH2)
 

weak sleeves

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 piss out of it. I took mine to 9k with a couple 10.5 pulls. Handled it like a champ.

Re: B20 bottom end + B16A2 head = ...? (b20vtecEK)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b20vtecEK &raquo;</TD></TR><TR><TD CLASS="quote">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 piss out of it. I took mine to 9k with a couple 10.5 pulls. Handled it like a champ.</TD></TR></TABLE>
I beat the shit 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

Re: B20 bottom end + B16A2 head = ...? (GTlvr82)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GTlvr82 &raquo;</TD></TR><TR><TD CLASS="quote">
I beat the shit 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
</TD></TR></TABLE>

I still have my motor, thinking of dropping it in another civic to enjoy chirping 5th again. Only time will tell.

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)

Re: B20 bottom end + B16A2 head = ...? (fkncivic)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSturboEH2 &raquo;</TD></TR><TR><TD CLASS="quote">

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 shit 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. </TD></TR></TABLE>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..

Re: B20 bottom end + B16A2 head = ...? (fkncivic)
 

and i wasnt a dickhead 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 shit togeter..

Re: B20 bottom end + B16A2 head = ...? (B20ZVTECHB)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B20ZVTECHB &raquo;</TD></TR><TR><TD CLASS="quote">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)</TD></TR></TABLE>

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. http://images.honda-tech.com/set1//smile/emcrook.gif

Re: B20 bottom end + B16A2 head = ...? (LSturboEH2)
 

the b20 z came with higher compression and more power.

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 . .

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. https://honda-tech.com/forums/images/smilies/emthup.gif

Re: B20 bottom end + B16A2 head = ...? (racer_x_eg)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by racer_x_eg &raquo;</TD></TR><TR><TD CLASS="quote">My B20 is going on 2 years with no problems. I take it to 8500-9000rpm constantly. I say go with it. https://honda-tech.com/forums/images/smilies/emthup.gif </TD></TR></TABLE>

is it b20z or b and also what is your bottom end setup, is it built?

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?

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

Re: B20 bottom end + B16A2 head = ...?
 

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

Re: B20 bottom end + B16A2 head = ...?
 

https://honda-tech.com/forums/all-motor-naturally-aspirated-44/how-build-%22reliable%22-lsvtec-b20vtec-1676914/

Read this

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.

Re: B20 bottom end + B16A2 head = ...?
 

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

http://i36.tinypic.com/20aw0uh.jpg

Re: B20 bottom end + B16A2 head = ...?
 

lol i started reading the op then was like 2004 wtf?!

Re: B20 bottom end + B16A2 head = ...?
 

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