what kind of power could it make using just the stock ls bottom? and where would the compression ratio be using just the LS stock bottom?
9.5 ratio or atleast close to 10 ?

my example of lsv setup my girlfriend wanted to do just got vtec-
b16 head
b18b block
stock rod
ls pistons
4-1 header and 2.5 inch cat back exhaust

i just trying to see if anyone try using the stock bottom and max it out to make decent power or a NA daily driver.

could you use b16 or gsr piston on ls rods? would i still have to modify the ls rods in order to use it?

 

you can use stock b16 pistons attached to stock ls rods to bump the compression ratio up. its a very popular thing to do in a lsv if u want to use oem parts. if ur gonna tear the block down and get it rebuilt using b16 pistons and new ls rods i would recommend that u also get the cank balanced and u might want to look into getting a 3 main block girdle so the motor wont flex under high rpm conditions. i have seen as much as 210hp out of an lsv with b16 pistons and skunk2 stage 1 cams. the ls block has a lil bit of a longer stroke which inturn makes a lil more torque but the down side is that the ls has no oil squirters on the crank and does not have a block girdle like the b18c1 b18c5 and b16 have. o and ur going to need to get it tuned.

 

im makin 200whp on a stock ls bottom end with gsr mains/girdle.

 

with stock ls pistons?

 

how high is the compression ratio and would i have to shave or trim alittle of the ls rods to make it fit on the b16 piston?

 

no p30 pistons...direct fit onto ls rods. running somewhere around 12.2:1

 

12 c/r high.. would that eat alot of gas? i was thinking about 11 the highest .. wow 12.2:1 . hey is there a different in usdm b16 piston and jdm b16 piston on a LSvtec setup? and would gsr stock piston fit perfectly on the ls rods?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cartune network &raquo;</TD></TR><TR><TD CLASS="quote"> the ls block has a lil bit of a longer stroke which inturn makes a lil more torque but the down side is that the ls has no oil squirters on the crank and does not have a block girdle like the b18c1 b18c5 and b16 have. o and ur going to need to get it tuned.</TD></TR></TABLE>

which b16's come with a girdle? my 00 Si (b16a2) does not have one....sheit i'm about to call the dealer if mine should have came with one....

 

no b16 came with a girdle to my knowledge but why does that matter since were talking b18 bottom ends?

no it doesnt eat gas i still get 28-29mpg and i still need to lean it out more cuz its still running high 11 afr under wot...should be around 12.7.

jdm b16 pistons will yield more compression, but the more compression you go with the bigger the cam you need to utilize it.

the gsr pistons may fit i dont remember, i know you have to shave the rod a tad to fit type r pistons but i dont remember about the gsr's.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by killerpenguin21 &raquo;</TD></TR><TR><TD CLASS="quote">the gsr pistons may fit i dont remember, i know you have to shave the rod a tad to fit type r pistons but i dont remember about the gsr's.</TD></TR></TABLE>

GSR pistons fit (the bore is the same).


To the op I would run b16 pistons. I had them in my GSR motor and it yielded me around 11.4:1 compression. I believe that is a good street comp. ratio.

 

the question wasnt the bore it was if they fit the rod.

 

wouldn't you need to shave to big ends of the rods, since its recommended by arp?

according to bambams thread thats what i conclude to when i read it.

But fill me in if im wrong

https://honda-tech.com/zerothread?id=1676914

 

i didnt but you should.

i also got luckey enough to not need to align hone my mains, they lines up perfectly. so it all comes down to how thing slook on pre assembly.

 

good info everyone...but yeah i got confuse when i start reading some of the older post.

 

if your adding arp rod bolts you will have to have the rod big ends honed/resized round again. the higher torque your applying to the arp's will make the end egg shape.
b16's do not have girdle

 

really? what if i keep it stock and dont rev past 8k?

 

personally i dont think you need a girdle. A lot of people are using lsvtec set ups with no girdle. Just have your rotating assembly balanced.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mmuller &raquo;</TD></TR><TR><TD CLASS="quote">if your adding arp rod bolts you will have to have the rod big ends honed/resized round again. the higher torque your applying to the arp's will make the end egg shape.
b16's do not have girdle</TD></TR></TABLE>

eh not always. just check for roundness....i had no issue.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by killerpenguin21 &raquo;</TD></TR><TR><TD CLASS="quote">

eh not always. just check for roundness....i had no issue.</TD></TR></TABLE>

i do and check with .0001 accuracy and i have always have to do it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by killerpenguin21 &raquo;</TD></TR><TR><TD CLASS="quote">

eh not always. just check for roundness....i had no issue.</TD></TR></TABLE>

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