JChops

ive got a 95 turbo civic ex at only 5-6 psi and i was wondering whats the hightest i could raise the rev limiter to. any advice? i looking to upgrade my ecu and want to know how safe i should polay the revs.
Jason

SLOAZZ95

More info plzzzz. do u have stk internals/ or up graded??? any othe mods done to vehicle.

King Tut33

If you haven't changed anything inside the motor, then don't rev it any higher than your stock rev limiter.

poison

I would not raise the rev limiter unless you have upgraded at least the valve train (valves, valve springs, etc).

JChops

i have a completely stock motor, progress springs, tociko struts, thats it

JICEK9

build the head

SOHC_MShue

get valve springs and retainers

JChops

okay, so because im not a mechanic or experience at all im going to ask some stuff. you guys say build the head, the valvetrain... if i didnt do this, what could i expect to happen to my motor and why. and what would upgading everything do for me? and whats some simple mods i can do to keep the cost down?
thanks alot guys
Jason

Dancing is Forbidden

keep the head stock. With a turbo set up at that kind of boost you arent going to see a lot of gains with better spings and what not.

TrickHonda98

It should be safe to do that. although it does depend on wich ECU you are going to use. If your RPM's reach the 9k area it would be best to put your rev-limiter on and then upgrade the ecu.

JChops

but what im concerned about is breaking something. how is the breathing going to change if i were to rev it to mayube 8000rpm? would it start getting horribly inefficient or break something? what do i have to worry about?

JChops

the stock dmotor will flow pretty well still at real high rpms right? what do you mean for the ecu? a rev limiter, a different fuel map?

mathusala

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JChops &raquo;</TD></TR><TR><TD CLASS="quote">the stock dmotor will flow pretty well still at real high rpms right? what do you mean for the ecu? a rev limiter, a different fuel map?</TD></TR></TABLE>

http://www.hondata.com

unless you replace the cam (timing/lift/overlap) raising the redline won't do much.

JChops

i higher rev limit will at the least keep you in gear longer, letting you make more use out of the lower gears i thought.

mathusala

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JChops &raquo;</TD></TR><TR><TD CLASS="quote">i higher rev limit will at the least keep you in gear longer, letting you make more use out of the lower gears i thought.
</TD></TR></TABLE>
it's more important to keep power to the wheels, torque falls very quickly when you run out of cam. look around at the millions of dyno charts that everyone post.

white ex

that motor produces max hp at 6600 0r 6800 rpms i dont remember which one, after that it drops drastically. so unless you get a different cam, springs, etc. theres no reason to rev it any higher than the 7200 rpm redline.