Pls let me know the compression for this set piston!can do more than 11:3:1?

 

There r 84mm!

 

We cant tell you compression without the piston specs and the motor specs..

Cyl head chamber volume
piston to deck height
Piston dome cc
Head gasket thickness
Stroke of the crank in the motor.

 

wait wait wait tom. you mean to tell me that with your eyecrometer and your ability to read the pistons mind that you dont know what compression these pistons will be??? im shocked.

 

I bet i could ballpark it pretty well if i knew which crak he was using.. But then I would be held to whatever i guessed.. so I'll stay neutral till theres more facts.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1 2 NV &raquo;</TD></TR><TR><TD CLASS="quote">wait wait wait tom. you mean to tell me that with your eyecrometer and your ability to read the pistons mind that you dont know what compression these pistons will be??? im shocked. </TD></TR></TABLE>


almost as funny as omniman telling some kid "you must have cnc hands"
hahah

 

erm..........
so how u guess this set piston CR can gain?is it high compression?

 

can some 1 let me know the near answer?

 

They will most likely fall somewhere between 11.5 - 12.5

But they look like 11.5 to me because the dome height is only slightly larger than my 10.5:1 JE's

Google is your new best friend.
CP Only makes two sets of Pistons in the Size noted on your Ring Packaging so...

CP Piston Specs http://www.cppistons.com/sCompactNEW.htm

SC7117 B - Series 3.307" / 84.0mm STD 1.181 CR 11.5

SC7120 B - Series 3.307" / 84.0mm STD 1.181 12.5

 

but this is custom made piston!
so this piston is won't be for Turbo,right?
i buy from ebay from a seller that custom made for his B18C at 11:3:1 he say.but i don't b'live because i the done is abit low!

 

just a guess really, they look allot like my old 2.0 liter wiseco pistons... rated at 11.8 w/ a gsr/itr crank.

 

How the hell are these custom made and you dont even know the specs? stolen, perhaps?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B20[Vtec &raquo;</TD></TR><TR><TD CLASS="quote">]can some 1 let me know the near answer?</TD></TR></TABLE>

You still havent answered any of my questions so how do you expect us to answer yours..What CRANK are you going to run .. It makes a big difference

 

i run B20b Crank!

 

Anyway Thanx all.......

 

Ok then they look to be whats claimed .. if you have a p72 head they will be in the 11.2 range and if its pr3 head it willbe lower ..10.95ish so yours will be the lower since you have a pr3

 

So if you have your block decked so your piston to deck is 0..you will have 11.5 cr (assuming you started with 10.95 that we guessed in the last post, which I used a .020 as a guess for what your pdh was/is now)

 

jesus christ they should have a ****** spec sheet, READ IT!

 

so i cannot do much wif this pistons?i need over 11to1!i run Toda C in my B20b wif PR3 head!

 

anyway can help me...........Please!

 

pls guess how much whp my car can gain?this is my setup!i hope 200WHP!

B20B Bottom End
Type-R Oil Pump
Cp 84mm(PIstons that i show u all)
Toda C Camshaft&Toda Valve Spring
Pr3 Head(Port&Polish and multi angle valve Jobs
310CC Injector base on JDM H22a
Aebs intake manifold
65mm Bored T/Body
4-1 JDM spec
Walbro 190LPH fuel pump
Custom burn chip wif retune with V-Afc

i need 200whp!can i make it??
the engine still in break in process.after this will goin DYno days.post Dyno Graps later.Thanx All!

 

I had a setup a few years ago with 12.9 cr
toda b's
ported skunk mani
68mm tbody
smsp header.

220 whp

 

so.how u think my car?how much WHP if tune well

 

just by the look of the picture i can tell the done is very very small. much smaller than a stock itr pistons so i would say with a 89mm crand and pr3 head it would by in the 10.x's. definately not in the 11's

 

SO.how to do much?i need over 11