junior40er

Does a jdm d15b vtec need higher octane? I think it does but im not so sure? I want to put the right octane cause I dont want quick wear on my engine. Any help would be great thanks.

idriveadelsol7

87

junior40er

But I thought a engine with higher compression need higher octane. I just wanna make sure. Like everyone else I want my car to last.

South Bay Surfer

i dunno but i put 89 for my d15b.

EK k kay

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by junior40er &raquo;</TD></TR><TR><TD CLASS="quote">But I thought a engine with higher compression need higher octane. I just wanna make sure. Like everyone else I want my car to last.</TD></TR></TABLE>

JDM D15B isn't high compression. It has the same compression as a z6.

1995Ex_Sedan

Its a D-Series. It'll run on water if you squint your eyes hard enough.

drewbie*

z6 is 9.2 d15b is 9.6 ... i thinnk

EK k kay

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Drew95eg &raquo;</TD></TR><TR><TD CLASS="quote">z6 is 9.2 d15b is 9.6 ... i thinnk</TD></TR></TABLE>

It's somewhere around 9.2 or 9.3. Still doesn't matter though because y8 is 9.6 and only requires 87. My mini me is 9.9 and runs fine on 87 too.

junior40er

thank guys for the info. I just wanted to make sure.

young noob

i run on 91, and i have a stock y7

93CX

But what about how JDM motors were designed to run on a higher octane? Since this is a JDM only motor you might want to think about that.. but my guess is that it will be fine on 87.

Scrapin4DR

http://www.jspecautosports.com says that jdm d15b vtec has 8:8:1 CR , i dunno here's the link to it : http://jspecautosports.com/cat...d=263 somebody correct me if i'm wrong

EK k kay

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by young noob &raquo;</TD></TR><TR><TD CLASS="quote">i run on 91, and i have a stock y7</TD></TR></TABLE>

Username explains it all

junior40er

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93CX &raquo;</TD></TR><TR><TD CLASS="quote">But what about how JDM motors were designed to run on a higher octane? Since this is a JDM only motor you might want to think about that.. but my guess is that it will be fine on 87.</TD></TR></TABLE> Yeah thats what I thought since in japan they have higher octane ratings than us.

92ehatch

i have a d15b7, when i run it on 87 it seems to have a lagging issue when trying to accell, with 89 it doesnt do that. my engine just sucks tho

you should be fine with 87 in it, why pay the extra money if you dont have too

StreetEG

ya its the difference of 50 cents a gallon by me... 87 all day.....damn b series....

MugenHonda

with gas being so expensive, why put premium

lowridincivic92

Ok compression on the d15b vtec is 9.6:1 and here is the link http://www.jdmenginescorp.com/..._id=6