I heard something about this from an old timer. We were BSing about car and he started talking about square motors where the stroke=bore. I was wondering if anyone has done this with hondas and what the bennefits would be.

 

The B16s are close.

 

what about for a gsr motor? that's how we got talking about it

 

The B17A is practically a square engine.

This link has some B-series bores and strokes.

http://g-speed.com/pbh/b16a/index.html

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SleeperGSR &raquo;</TD></TR><TR><TD CLASS="quote">what about for a gsr motor? that's how we got talking about it</TD></TR></TABLE>

GSR motor is 81x87.2
LS motor ia 81x89

 

b17 is 81 X 81.4
thats realllly close.

 

so i'm pretty new to engine tuning, i'm trying to read up as much as possible. From a reliablitly point of view i'm thinking it would be better to increase the bore rather than the stroke for the maximum hp/reliablity gain. i'm going to work on the b18c1. Is this thinking correct?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SleeperGSR &raquo;</TD></TR><TR><TD CLASS="quote">so i'm pretty new to engine tuning, i'm trying to read up as much as possible. From a reliablitly point of view i'm thinking it would be better to increase the bore rather than the stroke for the maximum hp/reliablity gain. i'm going to work on the b18c1. Is this thinking correct?</TD></TR></TABLE>

depends what your power goal is, how much money you have to spend etc. plenty of reliable 200+whp motors have been built on stock sleeves and bore/stroke

 

looking for 200-250whp. i would like to see a good torque gain also. I would like to try to flatten out the power curve and get more acceleration but not to much more top speed. I know this can be done with a 16a tranny. but i want a built motor also. And it's old so i would like to clean everything up, that why i was thinking bore and hone with jdm type r pistons. stage 1 skunk cams and a few other things along with a good tune.

 

k20a's are square. 86x86.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SleeperGSR &raquo;</TD></TR><TR><TD CLASS="quote">looking for 200-250whp. i would like to see a good torque gain also. I would like to try to flatten out the power curve and get more acceleration but not to much more top speed. I know this can be done with a 16a tranny. but i want a built motor also. And it's old so i would like to clean everything up, that why i was thinking bore and hone with jdm type r pistons. stage 1 skunk cams and a few other things along with a good tune.</TD></TR></TABLE>

for that power goal, consider an 85x87.2/89 setup

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by doood &raquo;</TD></TR><TR><TD CLASS="quote">k20a's are square. 86x86.

for that power goal, consider an 85x87.2/89 setup</TD></TR></TABLE>


So i can bore a stock b18c1 block out to 85?

 

no you need to sleeve first

 

yeah i'm a noob.....i always thought a sleeve was bolted between the block and the head? what exactly are you talking about

 

https://honda-tech.com/zerothread?id=565375&page=1

 

ok i'm starting to get it...so if i do any work to the block i will probably need a larger sleeve?

 

not really. just depends on your power goals and budget. you can safely overbore to 82mm on stock sleeves. but that's pushing it a little. stock is 81mm.

there's no replacement for displacement, and that certainly holds true for our little 4 bangers.

 

so going larger than 1mm overbore would require extensive work and machining

 

that's when resleeving comes into play

 

thanks man....is this something you have done. How much does this run?

 

havent done it personally but it's in my long term plans. expect a good sleeve job from any of the top company's out there to run you at least $900.

http://www.goldeneaglemfg.com
http://www.erlperformance.com
http://www.laskeyracing.com

just a few for you to look at

 

so if i went with a .5mm overbore just to clean up the stock sleeve, type r pistons ballance crank. then did some work on the head. Port polish, valves, springs, cams. i would be getting close to 9 on the tach and around 200 hp?

 

depends entirely on the setup

 

well i'm on the right track anyway?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SleeperGSR &raquo;</TD></TR><TR><TD CLASS="quote">so if i went with a .5mm overbore just to clean up the stock sleeve, type r pistons ballance crank. then did some work on the head. Port polish, valves, springs, cams. i would be getting close to 9 on the tach and around 200 hp?
</TD></TR></TABLE>

yes essentially you would. here is an example, this is my old set-up

GSR motor
82x87.2
CTR pistons
CTR crank pulley
Blox HSL cams
Blox intake manifold
pro fab header
tuned on hondata s200
AEM ITR cold air

netted me 225/155

so yes you are on the right track, now just spend time researching parts and what would work best for you