explain me something, me = noobish

[crafty]

alright so when people write the compresion of pistons down, wtf do the numbers mean?

i want to put some higher compresion pistons in an LS block that i am building and want to understand what is going with the compresion portion.

any recomendations for stock pistons to put into an LS would be sweet too. i was told use b16 pistons??

[ILIKETODRIVE]

http://www.zealautowerks.com/

[YewllowDA]

lets use an example, 9:1
the ratio of the displacement of air/fuel mixture(compression stroke) between BDC and TDC of the piston

volume of air/fuel mixture in the combustion chamber at BDC= 81cc
volume of air/fuel mixture in the combustion chamber at TDC= 9cc

higher compression = more power
dont get too high

[cowboi]

^^^ basically

[tegmister]

ctr pistons> b16> type r> gsr> ls.

[crafty]

ctr pistons> b16> type r> gsr> ls.

higher compression being high comp>lower comp???

[crafty]

lets use an example, 9:1
the ratio of the displacement of air/fuel mixture(compression stroke) between BDC and TDC of the piston

volume of air/fuel mixture in the combustion chamber at BDC= 81cc
volume of air/fuel mixture in the combustion chamber at TDC= 9cc

higher compression = more power
dont get too high

thanks

so would b16 pistons in a LS be ok??

[YewllowDA]

i guess yeah but it will take good tuning to run it right.
it also depend on the valve train setup

[honduh_head]

b16 pistons would work great, you will really like the power band...make sure you get a header that will be a little more combatible with the higher compression...a dc sport header aint gonna cut it

[crafty]

b16 pistons would work great, you will really like the power band...make sure you get a header that will be a little more combatible with the higher compression...a dc sport header aint gonna cut it

sweet does it need to be tuned like the dood above was saying? or can i just stick em in and have fun?

anyone have any b16 pistons??

[*inFamous*]

tune em!

[crafty]

isn't it expensive too tune? would it be worth the money? it just a stock LS with b16 pistons

[*inFamous*]

its worth the money if you dont want it to explode.

its required if your going to modify the compression ration that drastically.

Cost depends on the system

I personally recommend Hondata and Neptune.
You can find information regarding this two systems in Locash Racings forum in the Vendor section. He's the best honda tuner in town.

[honduh_head]

def tune it...you can never go wrong with tuning it...and with your set up i also say go with hondata or neptune...joe is the man!

[allmotorgsr]

isn't it expensive too tune? would it be worth the money? it just a stock LS with b16 pistons

tuning is ALWAYS ALWAYS worth the money.

[DJ NeX]

tuning is ALWAYS ALWAYS worth the money.

Couldn't of said it better myself mang

[allmotorgsr]

Couldn't of said it better myself mang

thank u sir:blunt:

[onefst91hatch]

i have some ITR pistons for sale. those pitons in a stock ls would take you to 11.67:1 compression compared to your 9.58:1 stock compression.