about the b20b engine
i got one from 97 cr-v
i plan to turbo it and put it in my 92 civic
i heared that its compression is 8.8:1
is that safty to a 15 psi of boost or i need to
replace a lower pistons?
and how flow of injectors i need to this?
is the exhaust manifold of this engine like
all the B series or different?
any ideas?
thnx

 

The pistons arent a problem, the sleeves are real thin though. Be gentle with her.

 

ok
about the injectors how much cc i need
to cover this boost ?
thnx

 

you will defiantly need larger injectors..........450cc at the minimum depending on how much power you want to make.

 

450 cc?
can the stock pump hold this or i wil going to replace with the 255 lph?
if i want around 300 hp how much boost i need to this engine and is the 450
cc enough?
thnx

 

i say 550cc leave yourself some room for improvements later and a 255lph fuel pump and your set...be careful with those sleeves once denonated occurs means bye bye motor

 

A walbro 190 would be good enough for you..and so you know the stock map sensor is only good till around 10psi,,so if you want to go higher you'll need a different map sensor..tunertoys.com has good prices..

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nonvtecD &raquo;</TD></TR><TR><TD CLASS="quote">The pistons arent a problem, the sleeves are real thin though. Be gentle with her.</TD></TR></TABLE>

its not that,,,its that uni-sleeve design that makes those engines weak..

 

ok thnx alot
how much boost can i drop to this engine in safe
and how much hp i gain from this?

 

you don't have to worry about the sleeves.. the pistons will be the first thing to go upon bad detonation.

 

detonation?
i think higher octane or methanol stop this

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by golf-2 &raquo;</TD></TR><TR><TD CLASS="quote">detonation?
i think higher octane or methanol stop this</TD></TR></TABLE>

one hell of a tune would

 

yea a good tune would...

and yes be gentle...the sleeves are kinda thin..

my bud boosted his b20 12psi on 95oct using t3t4...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Zer0_SpeedWorks &raquo;</TD></TR><TR><TD CLASS="quote">yea a good tune would...

and yes be gentle...the sleeves are kinda thin..

my bud boosted his b20 12psi on 95oct using t3t4...</TD></TR></TABLE>

the sleeves arent thin....they're probably actually thicker then the rest of the b-series,,,its the unisleeve design that makes them weaker then the rest..

 

B20's are worthless and the sleeves crack very easy.

Here is why... http://dwolsten.tripod.com/articles/jan96a.html

Search if you need more info because there is plenty of info on HT to back up what I said...

EDIT: Don't listen to any of these fools that haves B20's who claim they are "fine" to boost, they got lucky if the sleeves haven't cracked and they just don't want to accept the facts.


Modified by beerbongskickass at 4:17 PM 4/27/2006

 

Agreed, if your looking for more reliability I would stay around the 8-10 psi range, 15 psi is flirting with diaster, tuned properly you may be ok, but for reliability I would stay at 10 or under.

 

ok thnx alot for advice
you about saying that is danger to convert the b20 engine due to its sleeves
is the stock B18b more safty to doing this?
and can i lower the compression by putting another
b series rods?
another question plz
if i drop more than 10psi which map sensor i use?
thnx

 

Im running 17psi on my B20 right now, its the stock block and its holding out just fine. PM me for more info.

Blaze

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blaze45 &raquo;</TD></TR><TR><TD CLASS="quote">Im running 17psi on my B20 right now, its the stock block and its holding out just fine. PM me for more info.

Blaze</TD></TR></TABLE>

No one said it couldnt be done, I was simply saying less boost would be more reliable if he intends to use this as a daily driver. B20's arent junk as stated above, but 17 psi on a daily driver increases the likelyhood of breaking other **** plain and simple.

 

b20s will run fine up to 11psi on a good tune. i've never had a problem with mine.

guy who made the thread... do some damn reseach and then ask questions. no u can not lower compression by changing out the rods. u need to change out the pistons!