CiViC SiR

i went to dyno yesterday to check the power i would gain from replacing my old hybrid t3/t4(which mad 454whp@16 psi) with t3/60-1, my first run (4th gear) when i hit the NOS(50shot dp) and got full boost(28psi) it rev to 8600 direcly it gave me 280whp and my speed was only 75mph they told me the clutch sliped, in the second and 3rd run i hit 315whp and 380whp & max speed 93mph and 97mph, in the last run i made 401whp & max speed 102.5mph. i was sure that i had wheel spin but the michanic was telling it was clutch slip. so what do guys think?
i was getting full boost @4500rpm and hit nos @5000rpm
my a/f was 12:0 all the way
i'm using non lsd gear and some old tires 195/55/15

my old dyno was 454whp and my speed was 121mph

riceball777

you cant really tell
since the clutch is sliping yo know your making more power than before
get a new clutch that wull hld the power and go back to the dyno

CiViC SiR

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by riceball777 &raquo;</TD></TR><TR><TD CLASS="quote">you cant really tell
since the clutch is sliping yo know your making more power than before
get a new clutch that wull hld the power and go back to the dyno </TD></TR></TABLE>
since i'm using non lsd gear and old tires, will it make the car to wheel spin on dyno?

CiViC SiR

if it comes to buy a new clutch kit which one do you guys reccomend? lets say 500+ (this is a drag use only car)
i'm using aluminum flywheel and i preload the car for lunching at drag (6500rpm) so i think if i put ceramic disc it will damge my flywheel right?
i'm using now Centerforce dual F. kit

11SEC CIV

what kinda tourqe you putting down?
takes a whole lot to spin the wheels on the dyno

CiViC SiR

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 12SEC CIV &raquo;</TD></TR><TR><TD CLASS="quote">what kinda tourqe you putting down?
takes a whole lot to spin the wheels on the dyno</TD></TR></TABLE>
344trq when i made 401whp

sewell94

The fact that your mph is alot lower tell me that somehting spining or slipping. very well could be the clutch, u have a copy of the graph, spinning clutches have a disctinct pattern on the chart usually

CiViC SiR

igo4bmx

do you have any datalogging of you on the dyno?
a speed vs rpm graph would help alot

CiViC SiR

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by igo4bmx &raquo;</TD></TR><TR><TD CLASS="quote">do you have any datalogging of you on the dyno?
a speed vs rpm graph would help alot </TD></TR></TABLE>
no i dont have any

igo4bmx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CiViC SiR &raquo;</TD></TR><TR><TD CLASS="quote">no i dont have any </TD></TR></TABLE>

any way you can?
basically if you see your rpm climb and your speedo stay steady or go down... u have a slipping clutch

SOHC_MShue

sounds like a slipping clutch to me.

notoriousB

I'm surprised a centerforce dual friction even held that much power, my DF (when I had it) didn't like to hold much power at all. +1 for slipping clutch.