futurefastguy

ok, i have a d15b7 block with a b8 head.(don't ask my why). now, i know that redline on a b7 is around 6000rpm and the b8 is like around 4800. is it safe to rev my motor to 6000 or will my motor go BOOOMM!!!?

seeeya04

Hummmm think about

better not be 6k rediling it all the time everyday when you limit it 4k

james p.

4800rpm redline?

Why is it diesel?


redline it till destruction and get a real motor

Crasian

whats a B8?

futurefastguy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FarOutCoupe &raquo;</TD></TR><TR><TD CLASS="quote">whats a B8? </TD></TR></TABLE>

i was refering to the d15b8 engine. is a p.o.s. cx motor.

Luserkid

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by james p. &raquo;</TD></TR><TR><TD CLASS="quote">
redline it till destruction and get a real motor</TD></TR></TABLE>

Hell yea you could get a D15b VTEC long block for like 250 or so.

futurefastguy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by james p. &raquo;</TD></TR><TR><TD CLASS="quote">
redline it till destruction and get a real motor</TD></TR></TABLE>

since my suspension is finally in, i can start saving for my motor. your i dea sounds like fun . <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid &raquo;</TD></TR><TR><TD CLASS="quote">

Hell yea you could get a D15b VTEC long block for like 250 or so. </TD></TR></TABLE>

my friend is gonna pick one up soon, ill see how it feels on his eg and if i like it, ill pick on up and boost it hehe


Modified by futurefastguy at 2:26 PM 6/7/2005

IHateJDM

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by futurefastguy &raquo;</TD></TR><TR><TD CLASS="quote">
my friend is gonna pick one up soon, ill see how it feels on his eg and if i like it, ill pick on up and boost it hehe </TD></TR></TABLE>

you better boost it, that motor is slow as hell na.

BauleyCivic

Who cares if it blows up?

Put a 100 shot on that sucker and rev it to 8500

Bense

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by futurefastguy &raquo;</TD></TR><TR><TD CLASS="quote">ok, i have a d15b7 block with a b8 head.(don't ask my why). now, i know that redline on a b7 is around 6000rpm and the b8 is like around 4800. is it safe to rev my motor to 6000 or will my motor go BOOOMM!!!?</TD></TR></TABLE>

i have a d15b8 in my 94 cx right now, and I used to have the b8 head. then i put the d15b7 head on it. I have a ex cluster in it so i know the RPM for sure.
d15b8 = 8valve 70hp, 91 ftlbs. 6000rpm redline.
d15b7 = 16 valve 100hp ?? ftlbs ~6600 redline.

you can safely rev your motor to 6000 easily, cause my bottom end sees redline all the time.
however the cx head was designed to not have power in the high RPMs so reving past 5000 rpm is absolutely pointless. with my old b8 head and my cx/vx tranny, it took me longer to get to 75 mph (where 2nd gear ends at 6000rpm with the cx/vx tranny) when i rode 2nd to the end than if i switched to 3rd at 5000 and rode 3rd through. the d15b7 and d15b8 blocks are identical. It uses the same headgasket and timing belt. 8valve d15b8 is VERY weak, but it WILL get you from point A to point B. hope this helps.




Modified by bense at 9:48 PM 6/8/2005

futurefastguy

great info bense, helps out alot

Bense

if you need the ecu, lemme know

civiccpedx

wow that sucks, i would just kill the motor and go to a junkyard and pick up a d16z6 and boost it...lots of fun

when you do decided to destroy it though be sure to get it on film i wanna see how much a motor can take of that much beating, the last video i saw made the damn things look bullet-proof