i'm lookin into buyin a b20b and thinking about putting my turbo kit on it.......until my sleeved b16 block and head is done.......my question is is this a decent motor for boost??? and is my t3/t04e turbo gonna work decent on this engine??? anyhow if anyone has a boosted b20 post your motor/turbo info, i've heard horror stories that the b20's have weak sleeves?

 

Two things kill: detonation and over revving. A straigt B20 will handle 7-8 psi no problem, but take some timing out to (~1 deg/lb). Limit the revs to 7500

I run a B20 VTEC-T with a 1.92 mm head gasket to bring down CR to 9.0. Stock B20B CR is 8.8 to 9.0 (I've heard differently from different sources)

A B20B w/a VTEC head will give you a 10.9:1 CR. That's why people blow them.


Sean


[Modified by hybridsol, 9:57 PM 3/27/2003]

 

im sure its ok for low boost. under 8 psi. people crack sleeves because they want to boost 8+.

 

b20 sleeves are the weekest b series sleeves!

 

nothing a blockguard or sleeves couldn't cure

mike

 

Don't boost over 9psi on stock sleeves. We made 270hp at 9psi on a B20Z/Vtec.


[Modified by FUCATYPR, 1:52 PM 3/28/2003]

 

on a b20z with a t3/t04e turbo, on hondata, with rc injectors, i beleive they are 860's it it safe to say i could get around 300whp on 10psi, or is that pushing it too much, this just has to be my driver until my b16 is done, but i want it to be fast so just incase i my motor doesnt' get done until after summer i have something fun and quick to drive this summer at the track

 

anyone??? someone has to have just a straight turbo b20, no b20 vtec or anything........

 

Turbo b20 with LS ecu reving to 6800 is fine at 10 psi IMO maybe even 12. That is onyl if its tuned right...

 

so, you guys think that a b20b at 10 psi with btm and fmu is a bad idea?

 

my B20B blockguard - works wonders... sleeves don't crack anymore

 

what block guard is that, something you make or is that like an str one??? i think a press in block guard would be an inexpensive fix, as long as it's tuned correctly wich mine will be.......i'm tryin to figure out what kinda numbers i'm gonna be able to turn outta the motor on around 15psi and what it will run in my si hatch....

 

The one thing that needs to be replaced when turboing a B20 block is the crankshaft. Replace it with a B18B for turbo.

 

i hear block guard is prone to detonation.. because it creates a little hotspot at the top of your cylanders.

 

you sure its a 10.9:1 ? I just did a compression cal. on c-speed site. I got 9.0 with b16 head , 3 layer head gasket, b20b piston, b20 block.

 

That is incorrect, The correct compression with P3F pistons/pr3 head and a 3 layer headgasket is 9.0:1 With a GSR head, its 9.2:1. If you have a 99-00 jdm b20b or a USDM 99-00 B20Z then the compression is 10:1 w/b16 head and 10.2:1 w/ GSR head

They have the exact same crank, look up the part # from honda.

The block gaurd, if installed properly, will not creat hotspots at the top of the cylinders, I dunno where u heard that from, I havent heard that, maybe im wrong.

Unless ur using a GSR head, which makes it 9.2 with p3f pistons, if ur using PHK pistons which are on the 99-00 JDM b20b and the 99-00 USDM B20Z, then it raises compression to 10:1 and 10.2:1

 

good **** irev

 

thats some great info......thanks does anyone think that i could run low 12's on slicks, with this setup on my b20z:
stock b20z with press in block guard
hybrid turbo kit, setup for b16, has t3/t04e turbine
hondata s200b with 860 rc injectors
ls tranny, with lsd
the car is a relatively lightened 92 si hatch, with full interior.......should be around 2600 with me as driver and i weight about 250......could it possibly be faster, or am i lookin at much slower times?

 

dustin your car will be potty knock muhahaa.. Cuz you didnt take pictures under the full color change..
And my sohc turbo will hit 12's before yours ever does...
well maybe not.
Who knows I am a skinny *** and my car is light as ****.

Just go to johns and buy a damn b20z and be done with it. Put your turbo on and be done with it till frank does your b16. I want to ride in that car with a turbo again!!@!@!@!@!@!@!@!@ No fmu and missing link this time.. But anyways you will be fine with block guard and tuning up to 10-15 psi


[Modified by ghettocrxsi, 9:13 PM 3/30/2003]

 

thats what i think i'm gonna do.........i'm just concerned about if it will fill my need for speed temporarily.......

 

aren't 860cc injectors a little big for 10 psi?

 

yea they prolly are.......but i'm building a sleeved b16 that i plan on running upwards of 20 psi on so i am plannin the setup for that, and i just want to drive the car.......between the motor and the paint/bodywork it's been like just under a year since i last drove the car

 

let me warn you. B20B turbos have mad torque.

 

The problem with b20's are they crack between each cylinder. The lining on b20 cylinders are one piece where as b18c and others have separate linings for each cylinder. Dont know if that sounds right but if you compare the two side by side you'll see.

 

now heres another question, i have an ls tranny, that i'm goin to install a type r lsd into........my question is for the b16 i was gonna put the jdm itr final drive into it, thus giving me wider 3rd,4th,and 5th gear.......should i leave it alone for the b20 and just install the lsd??? i heard the b20 makes like peak torque at like 3000rpm...is this true?