chinners10

i don't really have enough money for sleeves....but i have enough for new conecting rods and pistons. how much boost can i run with out a sleeved block? can i go more than 15psi?? im getting SRP pistons and Eagle H-beams...please reply...im running a DRAG III set up on a 98 LS block.. how much boost will i be able to run...

TurboDC4

I thing with good tuning 15 would be the max with that setup.

censored

this question gets asked alot, stock sleeves (maybe blockguard) with aftermarket piston/rods, I really haven't seen a definate answer, bump for you

bretx0r

it all depends on the tuning

Hammer_head

You might ask Hybrid901. I think he's run pretty high boost on a non-sleeved block. Made like 390whp with it too.

chinners10

damn 390hp huh?? i need some more answers...cause if i can hit about 15 psi with rods and pistons and a block guard i'll take that path...but if not...i'll work my *** off and save up for Darton sleeves....thanks and bump

sydag5

hmm, i'm interested in this too. I'll give it another bump

CheezeFrog

I made right around 430hp with 22psi on stock sleeves. Then cranked the boost up to 28psi and didn't have any problems. The problems came when the nitrous was added (jetted for 75hp, which actually turns into more like 100-110hp at the wheels). Only then did I crack a sleeve. This was on an LS motor with a T3/60-1 turbo.

Vampyre

learing as much as ai can about these motors capablitites ttt for ya

the-anti-crack

how long were you running this much power, and was it daily driven?

i have an ls block i need to start working on and dont really know what rout to take.

hmm maybe i will boost the b16 and build the ls....

silverkorn

it all comes down to the tuning
what kind of engine management are you looking to run?

also what compression ratio are you going to run with the aftermarket pistons?

see its kinda hard to just ask hey will 15psi on my block hold? too many factors to just give a simple yes or no.

all in all i would say if you have a great tune, wide band O2 sensor with some dyno runs and a good EMS then you should be able to run 15lbs without a problem.

BrokenVtec

like everyone else said proper tuning is the key..... i have a friend who runs 18psi and 409whp....stock sleeves, no blockguard....

int3gra

Cheesefrog,

what EMS are you using? and how much time did u spend on tuning?
and was the motor ALL stock ?


[Modified by int3gra, 1:18 PM 4/7/2003]

dfoxengr

u can run 20 if u want...

chinners10

hondata S200...and RC engineering injectors (540cc), 9.2 compression dished pistons. someother stuff....but don't know what kind...help?

FOrSfEd

Tunning is what it's all about

Licensed2Spool

so these guys that are running 14-20 psi on a non-sleeveed block, are they using a block guard or not???

MotorMatrix.com

Why not just wait until you have enough for sleeves and then turn it up to 40lbs if you like??? people run sleeve specials all the time for 700-1000. do it right the first time and only do it once!!!

Big Josh

On my car I have hit 15 a couple times with boost creep. Nothing major happened but you do take alittle chance doing all the time. Sooner or later the tops of the sleeves will crack just because of costant high pressure.

Blockguards I heard rumor will vibrate around under high boost and cause the sleeves to crack. Just something I've been told.

I think if I was you I would think about maybe throwing a blockguard in there just to be safe. Like they say better safe than sorry.

Licensed2Spool

I want to hear from people that have used blockguards and had something break. I always hear rumors about them, but no one ever posts saying "oh my block guard didnt save my sleeves from cracking." People using blockguards, please post your setup!

censored

good point, I want to hear this...

INVALID

In the matter of the blockguard I don't have experience, but I do hold on to good information.

Here:

https://honda-tech.com/zerothread?id=412298