kantfadedisazn

yeah i was thinking about slapping on some ctr pistons in my b16, i did the compression calculator from http://www.zealautowerks.com/, now that being said my compression would be 11:9:1. would that be safe to use 93 octane pump gas or am i going to run into detonation problems?

Mechman456

u will hve problems wit detonation

cjames235

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mechman456 &raquo;</TD></TR><TR><TD CLASS="quote">u will hve problems wit detonation
</TD></TR></TABLE>

and why is that? people run up to 12.5:1 or even higher on 93 with no problems whatsoever........ this is tuned of course....... anyone in their right mind cant expect it to run with no issues on a stock ecu

1 2 NV

im no tuner but people buy 12.5:1 pistons jabboring about how much compression they have blah blah blah. they usually are too stupid to realize is those pistons are 12.5:1 with X head and 0 PTDH. i was one of these fools back in the day. bought some 12.5:1 JE pistons, actual calculated CR was 11.3:1 w/ a B16 head. a far cry from 12.5:1

kantfadedisazn

dam so im going to run detonation problems for sure then huh, what program would be best recomended to run with those pistons? i was thinking getting my ecu chipped with itr or ctr settings since the compression on those are allmost the same.

1 2 NV

you arent ready to handle building a motor. read read read the archives. dont touch your car.

nvmyb20hatch

<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">you arent ready to handle building a motor. read read read the archives. dont touch your car.</TD></TR></TABLE>

lol. hes only looking for some advice. not that i disagree with you but lets keep it friendly. on 93 octane you WILL run into detonation problems with a factory ecu, especially part throttle. with an ecu capable of timing changes, you wont, but you wont be able to really optimize the power the motor is capable of. i have 13.2:1 pistons in my lsvtec and tuned on pump the car doesnt detonate at all, however with c16 i made over 25 more whp on motor.

kantfadedisazn

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nvmyb20hatch &raquo;</TD></TR><TR><TD CLASS="quote">

lol. hes only looking for some advice. not that i disagree with you but lets keep it friendly. on 93 octane you WILL run into detonation problems with a factory ecu, especially part throttle. with an ecu capable of timing changes, you wont, but you wont be able to really optimize the power the motor is capable of. i have 13.2:1 pistons in my lsvtec and tuned on pump the car doesnt detonate at all, however with c16 i made over 25 more whp on motor.</TD></TR></TABLE>

so what ecu tuning would u recomend?

NA_B18C1

you can't just buy a set of 12:5 compression pistons and expect to get that compression off your motor. remember the motor has to be MILLLLED DOWN TO THE SPEC!!! to get that compression or else 12:5 ain't gonna get you a 12:5 but only a 11 or what so ever. and YES! i have a 12:5 fully builted gsr motor running on 93 with dyno tuned with a upgraded s200

Amped

so i could have a 11.5:1 je piston and have a 12:1 cpr due to the fact it depends how much you mill the motor? I was thinking about megasquirt's do it yourself engine management, is that a good system in honda tuning?

DonF

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nvmyb20hatch &raquo;</TD></TR><TR><TD CLASS="quote">

lol. hes only looking for some advice. not that i disagree with you but lets keep it friendly. on 93 octane you WILL run into detonation problems with a factory ecu, especially part throttle. with an ecu capable of timing changes, you wont, but you wont be able to really optimize the power the motor is capable of. i have 13.2:1 pistons in my lsvtec and tuned on pump the car doesnt detonate at all, however with c16 i made over 25 more whp on motor.</TD></TR></TABLE> That says it all.

1 2 NV

well i based my response on the fact he was looking for a "program" not a ECU management system.
i wont sit here and say that generic programs dont work cause when i built my first motor the best program that worked for me was a skunk2 program. i gained 3MPH and 3/10ths over what i already was using. worked good.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NA_B18C1 &raquo;</TD></TR><TR><TD CLASS="quote">you can't just buy a set of 12:5 compression pistons and expect to get that compression off your motor. remember the motor has to be MILLLLED DOWN TO THE SPEC!!! to get that compression or else 12:5 ain't gonna get you a 12:5 but only a 11 or what so ever. and YES! i have a 12:5 fully builted gsr motor running on 93 with dyno tuned with a upgraded s200</TD></TR></TABLE>

i think i covered this alreay.

anyways, id stick with a P28 out of a 92-95 EX or SI which can be had from 100-130 give or take. then get crome for FREE, get a laptop and buy an ostrich for 175 and your set. might want to get a bootlegged copy of crome pro for datalogging purposes.
i got a custom program for datalogging. i think about 5 people have it, most dont even know it exists.

cjames235

<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">i got a custom program for datalogging. i think about 5 people have it, most dont even know it exists.</TD></TR></TABLE>

now we do ........ so go ahead and upload it somewhere

kantfadedisazn

<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">well i based my response on the fact he was looking for a "program" not a ECU management system.
i wont sit here and say that generic programs dont work cause when i built my first motor the best program that worked for me was a skunk2 program. i gained 3MPH and 3/10ths over what i already was using. worked good.

i think i covered this alreay.

anyways, id stick with a P28 out of a 92-95 EX or SI which can be had from 100-130 give or take. then get crome for FREE, get a laptop and buy an ostrich for 175 and your set. might want to get a bootlegged copy of crome pro for datalogging purposes.
i got a custom program for datalogging. i think about 5 people have it, most dont even know it exists.</TD></TR></TABLE>

fine if i get a p28 will u tune it for me?

1 2 NV

you would be better off having someone local to you AF tune it at minimum. i can only guestimate and thats about it.

The Destroyer

Why are you dead set on such High Comp? You'd probably make more power on a lower compression with more timing/tuning.

kantfadedisazn

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vtaaak y0 &raquo;</TD></TR><TR><TD CLASS="quote">Why are you dead set on such High Comp? You'd probably make more power on a lower compression with more timing/tuning.</TD></TR></TABLE>

why becuase of the ctr cams that i have thats why. and they work best with high compression

2kblusiguy

Yes you can run CTR pistons in a B16 and the compression with a B16 or B18c5 head will be 11:1 ish they have the same head cc at 42.7cc's. you will not have a problem with detonation. you will have to mill the rods by 1mm on each side (small end) to fit any CTR, ITR pistons to stock B16 rods though.

kantfadedisazn

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2kblusiguy &raquo;</TD></TR><TR><TD CLASS="quote">Yes you can run CTR pistons in a B16 and the compression with a B16 or B18c5 head will be 11:1 ish they have the same head cc at 42.7cc's. you will not have a problem with detonation. you will have to mill the rods by 1mm on each side (small end) to fit any CTR, ITR pistons to stock B16 rods though. </TD></TR></TABLE>

i did not know that that is valuable info thanks

1 2 NV

might want to look into omnimans post about CTR pistons in a B16 block. that might be informative. many have made it happen but many have failed too.

The Destroyer

You can make power with your ctr's and lower compression. 11-11.5 compression isnt all that low.

X2BOARD

I've run over 11:1 CR with 91 octane gas with a stock ecu with no detonation problems... no tuning whatsoever... it wasn't the fastest...but it didn't ping.