So I want to stuff some aftermarket pistons and rods into my B18B. People tell me that I need to bore/hone my cylinder walls before I do so. This block has about 20k on it and the walls look pretty good to me, but what do I know. Take a look at the pic. Opinions needed!

 

just go to kragen or any part store...get a honing tool its pretty easy its like a triangular tool....(has patches of odd looking magnetic bars that go in contact with the walls to brush it up )you insert it into each cylinder to clean it up alittle......i think its called an honing deglazer.......man at 20kmls its not neccessary to bore and hone....

i had a 65kmls b18b did an ls/vtec with usdm itr piston the shop did this same procedure

 

It might not be necessary to bore it but, any time you are installing new rings/pistons the block should be honed. Your new rings won't seat properly on the old hone.

 

thanks for the info guys

 

look sfine but you can also get one tool that hooks into a drill, and has some beads, its basically a honing tool, you can do it for like about 30seconds up and down in each cylinder, and put a nice little crosshatch on it, but i think i can still see the factory cross hatch on yours

 

i would just pay the 80$ at a machine shop and have them hone it... a bore def isnt necessary if there are no visible marks on the cylinder walls.

its a very important step in a build. if your rings dont seat right you'll be pissin oil for the rest of time u have the motor...

 

should always hone if putting new rings in, should bore if you cracked a ring land

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaguyef &raquo;</TD></TR><TR><TD CLASS="quote">It might not be necessary to bore it but, any time you are installing new rings/pistons the block should be honed. Your new rings won't seat properly on the old hone.</TD></TR></TABLE>

sure...everytime...backt to the quesiton


WHAT ARE THE BENIFITS OF getting the block "honed" + "bore"

 

honing provides a rough surface for the rings to bed in on

boring increases displacement slightly, but i wouldnt do it unless it needed it

you can tell if it needs it by carefully inspecting each bore and any scratches you see scratch at it with ur fingernail; if it catches chances are that a hone will not remove it. then u have to bore it over

also if the bore is egg shaped or out of round it needs bore over

 

thanks again.

 

You don't need to. A lot of Acura Legends that roll into the Acura dealership come in smoking purple with over 100,000k+ miles. They drop in new piston rings without honing the cylinder walls and the car leaves the dealership purple-smoke free.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BG Boost &raquo;</TD></TR><TR><TD CLASS="quote">You don't need to. A lot of Acura Legends that roll into the Acura dealership come in smoking purple with over 100,000k+ miles. They drop in new piston rings without honing the cylinder walls and the car leaves the dealership purple-smoke free.</TD></TR></TABLE>
but with a FI application its well worth it, right?

 

On a friends B20, we put in forged pistons with new rings and we did a very "light" hone to break the glaze on the walls. The motor only had around 30,xxx miles.