ls/vtec

[-EJ1 Freak-]

wat pistons should i put on my ls block that is going on my coupe. CTR or ITR? wat has higher compression or which would go better?

[Dead Bird]

CTR yields a higher compression

What head are you using?

Before you ask anymore questions, please go to the Tech Forum and click All Motor. EVERYTHING you need to know is there

[Dead Bird]

Click this link

http://www.azht.net/forum/forumdisplay.php?f=91

[hondafan2]

imo
i heard ctr pistons will probably hit your valves-depends on what cylinder head you are using along with the cams- unless you use a really thick head gasket and you are gonna have to put at least 91 octane all the time. with the itr pistons you are good to go!!!

[jdm jess]

wat kinda head???
go with p30 pistons..u will need 2 run 91 octane

[-EJ1 Freak-]

im thinkin of using a b16 head. i would go with itr but too much money. What are p30 pistons?

[hondafan2]

p30=ctr
itr=p73

if you use p30 pistons, make sure the b16 head you are using it has NOT been milled to much and keep in mind that aftermarket thick head gasket. Never mind about the cams since i believe you are gonna use stock ones.

[ReyEG2]

p30=b16a
PCT=CTR
itr=p73


fixed:hithead:

here some more info this website at b20vtec. it is proven that CTR (PCT) piston has the highest compression.
http://rds.yahoo.com/_ylt=A0Kjq7KFS8RKpyUAh3kPxQt.;_ylu=X3oDMTExZW1jOHI wBHNlYwNzcgRwb3MDMwRjb2xvA3NwMQR2dGlkAwRsA1dTMQ--/SIG=13jc5ivue/EXP=1254464773/**http%3A//www.b20vtec.com/forums/b-series-tech/72854-ctr-pct-piston-compression-clarification.html



B16A block, B16 head and:
GS-R pistons 8.7
USDM ITR pistons 9.5
92-93 GS-R pistons 9.56
JDM ITR pistons 9.9
B16A pistons 10.2
CTR pistons 10.8

B16A block, GS-R head and:
GS-R pistons 9.0
USDM ITR pistons 9.9
92-93 GS-R pistons 9.94
JDM ITR pistons 10.3
B16A pistons 10.6
CTR pistons 11.3

B18C block, B16/ITR head and:
GS-R pistons 9.65
USDM ITR pistons 10.6
92-93 GS-R pistons 10.64
JDM ITR pistons 11.0
B16A pistons 11.36
CTR pistons 12.0

B18C block, GS-R head and:
GS-R pistons 10.0
USDM ITR pistons 11.0
92-93 GS-R pistons 11.1
JDM ITR pistons 11.5
B16A pistons 11.9
CTR pistons 12.6

B18B (LS) block, B16/ITR head and:
GS-R pistons 9.8
USDM ITR pistons 10.8
92-93 GS-R pistons 10.84
JDM ITR pistons 11.2
B16A pistons 11.6
CTR pistons 12.3

B18B (LS) block, GS-R head and:
GS-R pistons 10.2
USDM ITR pistons 11.2
92-93 GS-R pistons 11.3
JDM ITR pistons 11.7
B16A pistons 12.1
CTR pistons 12.85


a lot of those so called calculaters on the internet are JUNK. i did however find a decent one that is pretty close in case u were wondering of some other setups for your ls/b20 vtec build:

here ya go...

Honda Piston Measurments:http://www.theoldone.com/articles/pistons/

Combination motor/piston/head calc: http://www.bojangs.com/calculator/

[ej1freAk]

wat pistons should i put on my ls block that is going on my coupe. CTR or ITR? wat has higher compression or which would go better?
copycat

[-EJ1 Freak-]

copycat

lol woops didnt know u had da name

[-EJ1 Freak-]

p30=ctr
itr=p73

if you use p30 pistons, make sure the b16 head you are using it has NOT been milled to much and keep in mind that aftermarket thick head gasket. Never mind about the cams since i believe you are gonna use stock ones.

ok thanx alot

[fRoSt]

^^^ u should thanks RayEG2 for all the info. honda fan got it wrong.

jdm b16= p30 gives u high compression below P73-A0

usdm b16= pr3 the lowest of the group just right below p30

jdm itr= p73-00 gives u high compression below PCT pistons

usdm itr= p73-A0 gives u high compression below P73-00

jdm ctr = pct gives u highest compression and only be used with b16 head to be safe

these pistons are the only oem pistons that will give u the combination to reach high compression.

[ReyEG2]

^^^ u should thanks RayEG2 for all the info. honda fan got it wrong.

jdm b16= p30 gives u high compression below P73-A0

usdm b16= pr3 the lowest of the group just right below p30

jdm itr= p73-00 gives u high compression below PCT pistons

usdm itr= p73-A0 gives u high compression below P73-00

jdm ctr = pct gives u highest compression and only be used with b16 head to be safe

these pistons are the only oem pistons that will give u the combination to reach high compression.

:snookems:

[crxb16t]

gsr block, ctr pistons, gsr head,itr cams = fun. i had this set up for 2 years and never had any issues. and it got the piss beat out of it.

[VtecCr-x]

im looking at the b16a block with gsr pistons and a turbo set-up....

[-EJ1 Freak-]

frost-jdm-stylez and reyeg2 thanx alot guys

[ReyEG2]

ur welcome buddy. now go get some CTR piston ;)

[Jason.AZ1]

imo
i heard ctr pistons will probably hit your valves-depends on what cylinder head you are using along with the cams- unless you use a really thick head gasket and you are gonna have to put at least 91 octane all the time. with the itr pistons you are good to go!!!

Your suppose to run 91 anyways with a vtec motor ;)

[ReyEG2]

Your suppose to run 91 anyways with a vtec motor ;)

u got that right :snookems:
gosh gotta love the sound of VTEC kicking in :thumbup:

[DarkAngel]

^^^^^^ x2.

I just cant see myself getting rid of my VTEC kicking teg LOL.

[-EJ1 Freak-]

lol i think i will go with jdm itr to be on the safe side

[ICD]

Click this link

http://www.azht.net/forum/forumdisplay.php?f=91

You should be thanking this guy. :idiot:

[-EJ1 Freak-]

Thank you everybody =)

[Dead Bird]

i wonder if i'll ever have enough money to put my knowledge to good use.

anyone wanna sponsor me?


brad you should take a ride in this nasty k i half built

[xracerx]

nice