Civicman86

OK well I was always under the impression (at least on a stock motor) to shift right before fuel cut. Then I hear some people saying the drive and find what shift points are the best. Well how do these people go about finding the right point? It seems to me that if you shift any earlier than the latest point in the gear or fuel cut then you just placing yourself lower in the powerband after you shift.

So tell me is their really a science?

0554

a good driver can basically feel when to shift. i.e. can feel the cars power dropping off. i never even looked at the tach when going down the track for the most part.

91civicDXdude

in all hondas, i usually shift as high as possible in atleast 1st and 2nd gear as to drop back into powerband higher, but in the higher and longer gears i shift earlier if i can feel the power start to drop.

hybridmiklo

Don't listen to these guys. Get the engine dynoed. Look at the dyno sheet and see where you get the peak power at right before you start to lose power. That's when you shift. It's useless to take the engine farther than you should if it doesn't make any more power. Butt dynos are useless. Mainly because everybody's butt dyno is different.

9k_s2k

I shift at 9,000 ....When I'm racing I just keep my tach in my perifrial vision...And as stated above a "butt dyno" is useless on a tqless honda..if you want to be totally serious about it you "could" go to a dyno and shift on those points..but I shift right before my tach blinks red.

hondaguyef

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybridmiklo &raquo;</TD></TR><TR><TD CLASS="quote">Don't listen to these guys. Get the engine dynoed. Look at the dyno sheet and see where you get the peak power at right before you start to lose power. That's when you shift. </TD></TR></TABLE>

Unless shifting there will drop you out of the power band then you must shift higher

*don't listen to us though we don't know anything*

Phil

Civicman86

Ok cool, so basically on stock relimiter just shift as high as i can. If i shift below then i usually drop out of the powerband.

I wont have time to go to a dyno to see where there power band is (main reason why i asked on here if their was something else that I was missing on).

Thanks for the help guys. Wish me luck. Wanting a 8.2 on my stock y8 motor, BFG in the 1/8.

PM-Performance

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ALL M0T0R CRX &raquo;</TD></TR><TR><TD CLASS="quote">a good driver can basically feel when to shift. i.e. can feel the cars power dropping off. i never even looked at the tach when going down the track for the most part.</TD></TR></TABLE>
Ill agree with this. You shift right before your power starts to fall off

DaveF

shift a bit past your peak power, so you are still in your "effective powerband" when the rpms start coming down. that way, you are putting the most power possible to the track at all times.

jdkindle

To answer your question, there is a science about it, but you do not seem to be that serious about it, but if you ever do.........

If your goal is quicker E.T.'s, you should use a dyno and find where you can shift that provides you with the most effective gross power. A formula would be something like;

(Max power at pre-shift RPM - Max power at post-shift RPM)/2 = gross power

Now, you have to vary that based on track conditions, suspension and tires, but that gives you the scientific median.

Furthermore, on a street car, you really just want to be consistent more than anything else, so do what feels comfortable and natural and just repeat it over and over again.

Civicman86

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdkindle &raquo;</TD></TR><TR><TD CLASS="quote">To answer your question, there is a science about it, but you do not seem to be that serious about it, but if you ever do.........

If your goal is quicker E.T.'s, you should use a dyno and find where you can shift that provides you with the most effective gross power. A formula would be something like;

(Max power at pre-shift RPM - Max power at post-shift RPM)/2 = gross power

Now, you have to vary that based on track conditions, suspension and tires, but that gives you the scientific median.

Furthermore, on a street car, you really just want to be consistent more than anything else, so do what feels comfortable and natural and just repeat it over and over again. </TD></TR></TABLE>

Yeah Im not to serious about drag yet. Im really big into autocross but I want to do decent in drag also. Not looking to go out and make any records or anything, at least not with this car.

Your method makes sense. Though, thanks for the help

jdkindle

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Civicman86 &raquo;</TD></TR><TR><TD CLASS="quote">

Yeah Im not to serious about drag yet. Im really big into autocross but I want to do decent in drag also. Not looking to go out and make any records or anything, at least not with this car.

Your method makes sense. Though, thanks for the help </TD></TR></TABLE>

Don't stress about the drag strip then......just do whatever you are comfortable with and repeat. At autocross, you just want to stay wherever your peak torque is in a Honda. With my RSX, I would almost ALWAYS stay in second gear; shifts take alot of time there.

Turbo-charged

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybridmiklo &raquo;</TD></TR><TR><TD CLASS="quote">Don't listen to these guys. Get the engine dynoed. Look at the dyno sheet and see where you get the peak power at right before you start to lose power. That's when you shift. It's useless to take the engine farther than you should if it doesn't make any more power. Butt dynos are useless. Mainly because everybody's butt dyno is different.</TD></TR></TABLE>

my power band is flat from about 8300 rpm to the rev limiter at 9500. power never drops off! i wish i could get another 50 horsepower out of this turbo and i'd be damn happy. i usually shift around 9k anyways just for the hell of it.