rite now i have a b18a1 boosted on 5 psi
i am gettin ready to build a b18b with rods and pistons i wunt to go b20 pistons
but i wunted to kno how much boost will the sleeves hold up to.. and should i go with a block gurd???? i also have a b16 head with springs and retainers

thanks for the help i don't plan on builden this motor intill i get all the infostraight

 

you cant bore stock b18 sleeves to 84mm. you would need to sleeve the motor.

 

what he said. plus using stock pistons and rods is like re-using a condom

 

i was always told you could bored a ls to 84mm
i am plaining on getin turbo pistons and rods

i am don't plan on building this intill i get all my info straight thats why i am on here askin

 

the biggest you can go on a stock sleeve LS is 81.5mm. If you run aftermarket sleeves, you can go 84mm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schister66 &raquo;</TD></TR><TR><TD CLASS="quote">the biggest you can go on a stock sleeve LS is 81.5mm. If you run aftermarket sleeves, you can go 84mm</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxsteve &raquo;</TD></TR><TR><TD CLASS="quote">rite now i have a b18a1 boosted on 5 psi
i am gettin ready to build a b18b with rods and pistons i wunt to go b20 pistons
but i wunted to kno how much boost will the sleeves hold up to.. and should i go with a block gurd???? i also have a b16 head with springs and retainers

thanks for the help i don't plan on builden this motor intill i get all the infostraight

</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike@synapse motorsport &raquo;</TD></TR><TR><TD CLASS="quote">you cant bore stock b18 sleeves to 84mm. you would need to sleeve the motor.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bigbadboy &raquo;</TD></TR><TR><TD CLASS="quote">what he said. plus using stock pistons and rods is like re-using a condom</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schister66 &raquo;</TD></TR><TR><TD CLASS="quote">the biggest you can go on a stock sleeve LS is 81.5mm. If you run aftermarket sleeves, you can go 84mm</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bigbadboy &raquo;</TD></TR><TR><TD CLASS="quote">what he said. plus using stock pistons and rods is like re-using a condom</TD></TR></TABLE>


lol thats gross.

i wouldnt go over 81.5mm on a stock sleeve, you can go up in the 85mm range on most sleeved motors, depending on if you o ringed or not

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxsteve &raquo;</TD></TR><TR><TD CLASS="quote">i was always told you could bored a ls to 84mm
i am plaining on getin turbo pistons and rods

i am don't plan on building this intill i get all my info straight thats why i am on here askin
</TD></TR></TABLE>
Who have you been listening to?

 

The person who told you this information may have failed to mention that you must get aftermarket sleeves for that size bore...its not a huge deal.

 

What is your horsepower goal? If you have a high goal, I suggest you sleeve the block (and as Schister stated, youre gonna have to anyway, if you go up to 84mm).

5 to 10 psi on an ls/vtec setup like youre about to do will be fine with an 81.5mm bore and aftermarket pistons/rods and a good tune. But when you start puttin some REAL boost to that B18 block, youre gonna put some real stress on the block with that B16 head spinning that much RPM on the stock sleeves due to the LS's 1.54:1 rod-to-stroke ratio.

Sleeve the block, so you can do your 84mm bore. Its the best insurance you can have for your motor. Remember, its all about your horsepower goal, and what you wanna get out of your setup.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schister66 &raquo;</TD></TR><TR><TD CLASS="quote">the biggest you can go on a stock sleeve LS is 81.5mm. If you run aftermarket sleeves, you can go 84mm</TD></TR></TABLE>

LIES!! to the op: DO IT!!!!