i'm working on building a B series motor on paper, and i wanna figure out how to get H22-like torque out of a b18c block.

..............H22 ..................................B18C1 ................................ MINE
bore: 87mm ............................bore: 81mm ...................... bore: 84mm
stroke: either 90 or 91mm .........stroke: 87mm ......................stroke: ??
(i don't remember)

ok, if i know for a fact and i hear a fair many testimonials proving that i can use an 85mm bore for a reliable street application, i will probably go ahead and try it. this IS for a street car tho, and it has to last. so it will probably be 84mm. as for the stroke, i was thinking of 93mm or so. i'll be adding a deck plate to increase the stroke. here's where i want opinions: will a 93mm stroke give me a torque figure close to that of the H22? if not, should i go with a 94mm or even 95mm stroke? also, i want this motor to rev to about 8500. will such a long stroke cause the engine to rev too slowly? i don't want it to just work its way to the top of the powerband, i want it to rev decently fast. if i knife-edge and micropolish the crank (which will probably be the 3.504 LS crank, not the 3.7xx GSR crank) will it rev fine? is it possible to go with a bigger stroke and still have it rev ok? i don't need it to whip up like a b16b, but i'd like it rev about as fast as my stock gsr, or better.

and btw, please don't offer advice if you're not 100% sure about what you're saying and if you're basing your advice off of what you've heard, not what you've experienced first hand. i just don't need to sift through the posts and figure out which ones are good, and which are trash.

thanks in advance

also, i posted this in the Tech forum too, but i didn't think i would get hits fast enough there, so i came here.

 

Well from my own knowledge, you'd be better off simply swapping in an H22 rather than dealing with trying to stroke out a B18C1. The H22 is overall a bigger displacement motor, where the increased bore helps to balance out the increased stroke (over the C1's). If you bored out the C1 to 84mm (?) and stroked it out to 93mm...you'd be dealing with having to get the block resleeved along with forged rods/pistons, etc and you'd still be dealing with a pretty horrible rod-stroke ratio. My advice to you: Either buy an H22 and swap that right in, go for forced induction to gain the HP and TQ numbers you want, or look into a stroker package from companies like Eagle, etc. The packages include forged pistons, rods, and a good crank, and eliminate most of the 'guess work' from a project such as yours. Good luck

 

i thought about swapping the H22, but i would like to have the chance to build a motor too. and if i buy a kit, it takes the fun out of it. i don't wanna go with forced induction cause i think a honda just isn't meant to have it.

maybe i should just look into building an H22.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Train &raquo;</TD></TR><TR><TD CLASS="quote">maybe i should just look into building an H22.</TD></TR></TABLE>

I like this idea. Get ahold of Turbo Sam, he knows his way around the H series engines better than most.

 

Why not build up a b20z.Change the IM,p/p the head and you will have torque and flexible hp.IMHO

 

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

I like this idea. Get ahold of Turbo Sam, he knows his way around the H series engines better than most.</TD></TR></TABLE>

thanks buddy.

 

K series

 

that would be cool, but its a little rich for my blood. after buying the engine for like 4-5 grand, i'd wanna build it too, and that can get expensive.

wish i had the funds tho