Just want to know if its possible from cam gear and crome tuning. What i mean is, say I want to keep the stock redline (8100), but the cams i have make power to 8600 or so. Can the tuner adjust it so peak is at 8100? Wouldn't this shift the entire power curve 500rpm's to the left? or did i miss the concept?

 

why are you so bent on not revving your motor??
if you have a cam why not rev it to where it makes power...

 

Its just personal preference. Stock gsr valvetrain is also being used. So just want to keep the stock redline. Bump for an answer.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .xcalibur. &raquo;</TD></TR><TR><TD CLASS="quote">. Can the tuner adjust it so peak is at 8100? Wouldn't this shift the entire power curve 500rpm's to the left? or did i miss the concept?</TD></TR></TABLE>

So basically if we exaggerate your example... and your tuner adjusts and shifts the power curve by 7000rpms to the "left", you can make your power at 1,100 Rpm? See how thats not going to work.

 

It could definately work. Cam gear tuning will only get you so far though. You may be able to shift the powerband down with cam timing. move them both in the same direction on the dyno and see what happens. Im not going to tell you which direction, thats the fun of experimenting.

But to really shift the curve around, youd have to change other parts, which would kind of be pointless because for the cost, you could just change the VT and rev the motor like it was meant to be revved.

 

advance both cams = shift the power band down

retard both cams = shifts the powerband up

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spun Vtec &raquo;</TD></TR><TR><TD CLASS="quote">advance both cams = shift the power band down

retard both cams = shifts the powerband up

</TD></TR></TABLE>

what a spoil sport.

 

haha.... hey anything to save time on the dyno.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spun Vtec &raquo;</TD></TR><TR><TD CLASS="quote">
advance both cams = shift the power band down

retard both cams = shifts the powerband up
</TD></TR></TABLE>

what happens to the power band if you advance the intake cam and retard the exhaust cam? and vice-versa?

 

Would peak power remain the same or would it lessen when shifting the powerband around?

 

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

what happens to the power band if you advance the intake cam and retard the exhaust cam? and vice-versa?</TD></TR></TABLE>

If you spread the lobe centers , you are effectively decreasing overlap. Put it on a dyno and find out.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .xcalibur. &raquo;</TD></TR><TR><TD CLASS="quote">Would peak power remain the same or would it lessen when shifting the powerband around?</TD></TR></TABLE>

Youre peak power would probably fall a bit. Because youd probably produce the same TQ/BMEP, but with less RPM. See above answer.

 

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

If you spread the lobe centers , you are effectively decreasing overlap. Put it on a dyno and find out.
</TD></TR></TABLE>

*waits for Spun Vtec to spoil it* j/k

&lt;---too broke these days to get to the dyno, just here reading to learn.

Spreading the lobes: on a B16 (I'm trying to visualize it) does that mean the exh.cam is advanced and the int.cam is retarded? If so, would that cause a drop in dynamic compression?

EDIT: maybe i was visualizing it upside-down....when you say "spread the lobes" ....affuhck it I need to get back to work before my head explodes....

 

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

what happens to the power band if you advance the intake cam and retard the exhaust cam? and vice-versa?</TD></TR></TABLE><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption &raquo;</TD></TR><TR><TD CLASS="quote">

If you spread the lobe centers , you are effectively decreasing overlap. Put it on a dyno and find out. .</TD></TR></TABLE>

That's impossable for me to do

 

LOL oh yeah forgot about that whole single-cam thing....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spun Vtec &raquo;</TD></TR><TR><TD CLASS="quote">advance both cams = shift the power band down

retard both cams = shifts the powerband up

</TD></TR></TABLE> early stage of vtec will help also

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by manoy &raquo;</TD></TR><TR><TD CLASS="quote"> early stage of vtec will help also
</TD></TR></TABLE>

It will help the engine BOG if you engage it before the reat of the motor is "ready" for it.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .xcalibur. &raquo;</TD></TR><TR><TD CLASS="quote">Just want to know if its possible from cam gear and crome tuning. What i mean is, say I want to keep the stock redline (8100), but the cams i have make power to 8600 or so. Can the tuner adjust it so peak is at 8100? Wouldn't this shift the entire power curve 500rpm's to the left? or did i miss the concept?</TD></TR></TABLE>

Not sure what cams you're running but limiting RPM is not going to save your engine from trying to run big cams on stock valvetrain. The instant VTEC engages, it's already too late and that engine's running on borrowed time.

Hondas are designed to rev to make power, trying to alter that would suggest you don't bother to modify the car at all or buy a different type of car that doesn't need to rev to make power.