tonight while driving my friend and I went to a deserted parking lot and drag raced each other. During this drag I revved my stock d16a6 motor past redline to about 6700 rpm before i upshifted into the next gear. This happened twice in a row.

how much damaged would I have done to my motor? I know the springs begin to float at that rpm which probably isn't good for my valves or cams.

The car drives fine and isn't making any funny noises but i'm concerned that I may have mucked something up.

Thanks

 

Do you have the stock ecu? If so, it will prevent over revving on upshifting. The stock tach is notoriously off so you don't have to worry about a thing.

 

Redline is below 6700RPM? Damn, things I should know when I shift at 7,000RPM passing

 

when racing i shift at 7200, jdm d15b sohc vtec p08 ecu

 

you didn't damage anything most likely. I shift at 7k on my 110k mile Si all the time. The fuel cut is at 7200 or so. The tach is probably off but yeah, the ecu will prevent over revs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by p1nkunit &raquo;</TD></TR><TR><TD CLASS="quote">when racing i shift at 7200, jdm d15b sohc vtec p08 ecu</TD></TR></TABLE> Now what does that that have to do with the D16A6 rev limit and such what?

 

over-rev protection from ecu even on an obd0 engine?

I didn't think that the crx had a rev safety on it

Thanks

 

every car ever has a rev limit, if not there would b people reving to 12000, or untill the rod bearing were gone or what not, my pr4 is at 7200

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ridexstraight &raquo;</TD></TR><TR><TD CLASS="quote">every car ever has a rev limit, if not there would b people reving to 12000, or untill the rod bearing were gone or what not, my pr4 is at 7200</TD></TR></TABLE>

This isn't true, most oem manufacturers have a fuel cut, however a lot of chipped ecu's as well as tunable ecu's like hondata/motec/ems do not.

 

i have a 91 crx Si with 173k miles on it....i shift at 7200 all the time.

 

well yea i meant a point that motor wont rev controlled by the ecu, fuel cut spark cut which ever ud like u get the point, and im talkin about factory cars not atfermarket goods

 

i revved my old d16a6 past the tach redline daily.

when i sold it to a guy for parts it had a 3 inch hole in the block

 

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

how much damaged would I have done to my motor? I know the springs begin to float at that rpm which probably isn't good for my valves or cams.

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

am i the only one who noticed he said cams??? but yeah you shouldn't of hurt anything.

 

does a crx still make power that high ?

 

A6 fuel cut is at 7200. I constantly have it on the rev limiter at autocrosses and the track. You won't hurt it, other than accelerated rod bearing wear. Valves probably won't float until around 8000.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RexOwner &raquo;</TD></TR><TR><TD CLASS="quote">does a crx still make power that high ?</TD></TR></TABLE>
Dyno charts have shown that the D16A6 peaks around 6400 or so . . . it's not as far off from a D16Z6 as Honda wants you to believe. I've seen stock A6es and SOHC ZCs put 114hp to the ground.

 

it does feel like after 6500 theres nothing left in it.
stock zc's laid down 114whp, i wish i could see where im at. i still dont see why everyone takes it to fuel cut, your not accelerating any faster.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Targa250R &raquo;</TD></TR><TR><TD CLASS="quote">A6 fuel cut is at 7200. I constantly have it on the rev limiter at autocrosses and the track. You won't hurt it, other than accelerated rod bearing wear. Valves probably won't float until around 8000.


Dyno charts have shown that the D16A6 peaks around 6400 or so . . . it's not as far off from a D16Z6 as Honda wants you to believe. I've seen stock A6es and SOHC ZCs put 114hp to the ground.</TD></TR></TABLE>

the stock tachs are WAY off. BUT on the dyno, running advanced +8 on the cam my motor is still climbing for power when we hit the 7200 fuel cut.

 

i shift at ~6k in my a6, i have never touched redline on my car according to stock tach, but thats cause im paranoid, and poor.

i have long wondered what i would need to do to raise that line safely. i know i would probably have to replace the valve springs w/ after market peices, and maybe a higher lift cam? but what else to safely rev higher but maintain streetability? any thoughts? im running completly stock d16a6.

 

You would be surprised how consistantly u can rev above the given redline.

 

i have a stock 90 crx dx with a 89 crx si motor in it and it has a 168000mil on it
and ever day i drive it see the rev limiter if some thing is going to brake it will ( i don't give a sh** )

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ridexstraight &raquo;</TD></TR><TR><TD CLASS="quote">every car ever has a rev limit, if not there would b people reving to 12000, or untill the rod bearing were gone or what not, my pr4 is at 7200</TD></TR></TABLE>

Wrong, my std didn't have a rev limiter. Thats an 88 pm5 ecu nor the 91 dx pm5 it put in. Now with mpfi, im runnin an 88pm6 and it doesn't seem to redline ever?? its crazy, it seems like it doesn't have a redline, it just keeps going. Weird...

 

also, my A6 was throwing a code for the O2 and that eliminated the fuel cut... ;-) found that out on the dyno too lol when the snap on gun ran to 7400 ;-)

 

i redline it daily on my a6 with 173k like i said. but another reason i dont shift till 7200 is because when i hit second i chirp the **** out of the tires....just makes me feel like i have more power