franky motors, with stock bottem ends.... How far can someone go doing an all motor setup on either of these two motors... Heard something about adding a block gurdle to the b20 and ls block to help.

I really want to go b20, because of the torque factor, and I need something to move my EK 4door. I don't have the money to build a bottem end, as far as sleeving, and new pistons rods yet,

If vtecvodoo is reading, help me out man. I saw your setup in red hatch and, well im in love....... what should i do? buy a b20 and build the bottem end.... or just buy a b16 and swap out the block latter???


BTW: for the new forum, was wondering when you guys were gunna add this.

 

I believe B20bastard had a stock b20 bottomend with a B16 head. It put down excellent numbers. Just don't rev the **** out of it and you will be fine. 7500 is plenty for it.

Just install a GSR t-belt and water pump and you will be ok.

 

If your money is tight then just doing the swap and frankenstien it ut dont rev over 7500 if your are not going to build the bottom end, I mean in reality your car is not that heavy so you really wouldnt need to rev high then that.

7500 is an awesome number for that setup and I would imagine that you would pull good numbers with it. Hope that helps......

Oh yeah, Blake your the man!

 

I'm working on building a B20 vtec for my crx. Its going to be built to Honda Challange rules so the bottom end is definately stock. I heard (if i remember right) that a B20 with B16 head was running about 205hp at the wheels with cams. I dont know what cams... it was just track talk and guesses from competators... but the numbers were from the driver. I'm sure if you build the top end right, and get a B20Z bottom (higher stock compression), 7500-8000 will be very comfortable as the red line. My money is tight right now but i'm going with an ITR head. people tell me i should just port the B16 head... but i'm not totally sure on its legality with HC.

edit: what ecu do people usually run with the B20tec? Thats my next item to sort out with this moster motor... B20Z bottom with ITR head... suggestions?

 

205 at the wheels with stock pistons sounds fishy to me.

 

205 whp seems hella high, i have seen those go for about 180, p28s work great, can you run a chipped ecu in the honda challenge?

 

205 sounds a little high, but i know people with LS/VTEC's that walk all over GSR's all day, so figure adding in a new big bottom end and that might get you close to 200

 

Get a Dart Block and call it a day.

Or get a GSR block and resleeve it to 2.0L via some Darton MID.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WAFFLES &raquo;</TD></TR><TR><TD CLASS="quote">205 at the wheels with stock pistons sounds fishy to me.</TD></TR></TABLE>

doesnt to me...below is a pic of my motor, notice the dyno doesnt even extend past 7800, i told the tuner to take it to 8k, but he went just short of it, my graph is still climbing...

stock jdm b20b with **** 8.8:1 cr pistons
stock itr head with cams, intake manifold
stock jdm itr 4-1
stock b16 thorottle body
stock airbox with k&n
full exhaust apexi rs

slap on some real cams and can we say 200+? and this is on the LOW CR crap b20b pistons, imagine the b20z pistons...

 

damn that some serious power.

You got the ITR head tho, which has awesome head flow.

I'd die if I couldn't rev it to 8500K tho. That's what I dont like about the B20 setups.

Have you ever thought about ditching the B20 crank and run the GSR crank, GSR or fored rods, and high comp pistons? Say 12.5 :1 ?

I belive if you got everything balanced with the GSR crank you could rev well into the 9's.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by P1mpSlap &raquo;</TD></TR><TR><TD CLASS="quote">damn that some serious power.

You got the ITR head tho, which has awesome head flow.

I'd die if I couldn't rev it to 8500K tho. That's what I dont like about the B20 setups.

Have you ever thought about ditching the B20 crank and run the GSR crank, GSR or fored rods, and high comp pistons? Say 12.5 :1 ?

I belive if you got everything balanced with the GSR crank you could rev well into the 9's. </TD></TR></TABLE>

yea im sure the itr helps, but not as much as a REAL full port job, which is up next for my new project, but i plan on keeping the ls/b20 crank, new rods and pistons though, after those go in, ill have no prob revin to 9k+, but i dont think ill have to rev past 9500.

 

B20 Cylinder wall failure ever concern you?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by P1mpSlap &raquo;</TD></TR><TR><TD CLASS="quote">B20 Cylinder wall failure ever concern you?

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

no, not with tuning, tuning is key, cant be slappin on expnesive *** parts here and there and expect it to last and give lots of power w/o proper tuning

 

B20 Cylinder Walls can break from big cylinder pressure....your not gonna break them on 185whp tho.

 

I was concerned with the thin walls on the B20 (apparently if you hold them up to the light you can see thru them)

IMHO, keep the compression in the 10's, no nos, no boost, no problems. I think mine would be close to 200 whp. Mine is a Z with about 10.5 to 1, toda A's, stand alone etc

 

with sleeving and stroking all b18 and b20 shortblocks are capable of the same things

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AussieB20vtec &raquo;</TD></TR><TR><TD CLASS="quote">I was concerned with the thin walls on the B20 (apparently if you hold them up to the light you can see thru them)</TD></TR></TABLE>

did u know b16's have so little torque they roll backwards on slight inclines?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sp00n'd Supra &raquo;</TD></TR><TR><TD CLASS="quote">

did u know b16's have so little torque they roll backwards on slight inclines? </TD></TR></TABLE>
what.
with the clutch in, of course...

 

I think that was a "joke".

joke 1 a : something said or done to provoke laughter; especially : a brief oral narrative with a climactic humorous twist b (1) : the humorous or ridiculous element in something (2) : an instance of jesting

2 : often taken by individuals literally who live to serious of a life.

 

well i'm building a set up of a b20 with itr head.... but i got some arais 84mm forged domed pistons.... but debating if i should put the pistons in. I'll be running them with cunnham ultralite rods, due to i don't wnat to run fucken race gas god damn it.... hahahah **** is sooo expensive..


Modified by TrevorHiroshima at 5:04 AM 6/3/2003

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr Milano &raquo;</TD></TR><TR><TD CLASS="quote">I think that was a "joke".

joke 1 a : something said or done to provoke laughter; especially : a brief oral narrative with a climactic humorous twist b (1) : the humorous or ridiculous element in something (2) : an instance of jesting

2 : often taken by individuals literally who live to serious of a life. </TD></TR></TABLE>

: Puzzled : youre gay. you dont have to give me the def of a joke. it had nothing to do with anything.



Modified by hybridvteceg at 12:41 PM 6/1/2003

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">did u know b16's have so little torque they roll backwards on slight inclines? </TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybridvteceg &raquo;</TD></TR><TR><TD CLASS="quote">
what.
with the clutch in, of course...</TD></TR></TABLE>

Yeah neither did either of these posts, or this post right now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TrevorHiroshima &raquo;</TD></TR><TR><TD CLASS="quote">well i'm building a set up of a b20 with itr head.... but i got some arais 84mm forged domed postons.... but debating if i should put it in with the cunnham rods due to i don't wnat to run fucken race gas god damn it.... hahahah **** is sooo expensive..</TD></TR></TABLE>
ugh..cunningham rods?
i'm assuming it's the piston that primarily dictates the compression...
get a lower compression piston then?

 

i have a BONE stock b20b bottom end + b16a2 head. All i have is a CAI right now. The thing STOCK kinda falls on its face after 7000, but I added an adjustable fpr and the thing pulls pretty good til' 7800 or so, but at 8100 its definately revving slower than my b16. But for a stock bottom and top end, im VERY happy with it.

mike

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sp00n'd Supra &raquo;</TD></TR><TR><TD CLASS="quote">

did u know b16's have so little torque they roll backwards on slight inclines? </TD></TR></TABLE>

Hahaha