Opinion On Quarter Mile Time..

[WazR32GTSt]

broke my drag racing virginity thursday night at Willowbank, QLD

car:

r32 gtst

rb20det automatic

155rwkw

time:

ET = 14.714

speed = 98mph

60' = 2.503

The 2 things that were hurting me:

takeoff with the auto and rb25 turbo was hard. stomped on accelerator and brake and pulled up handbrake, but couldn't build positive manifold pressure as it has an rb25 turbo that's slightly too big to get boost at that load

i run out of power about 6000rpm as seen on the dyno, so the auto changing at 7500rpm wasn't helping.. would ideally have changed at 6500rpm of there abouts

any ideas to improve?

does that mph match the ET?

i'm considering a shift kit and going to ring MV automatics next week..

cheers,

Warren

[GTAAAH]

Umm try turn the economy/power switch to economy and itll shift sooner. Dunno if that helps, wasnt sure if u thought of it hehe

[RB SANDY]

hi what are the mods are you running and the boost

a 14.7 is ok a ba xr6 turbo only runs 14.9

here is a link with all the ba xr6 turbo specs

http://www.mynrma.com.au/falcon-xr6-turbo_...n_xr6_specs.asp

[WazR32GTSt]

my mods:

http://www.skylinesaustralia.com/forums/in...=115398&hl=

XR6 turbo only runs 14.9?

[WazR32GTSt]

argh!

why was this thread moved?

no one looks in teh stupid drag section!!

[MrBlonde]

argh!

why was this thread moved?

no one looks in teh stupid drag section!!

You'll be flooded with help now!

[Pal]

not a bad time, i think a stock auto r33 runs low 15ns to very high 14ns. looks like your 60' is killing you

[rev210]

I don't know if these things will work for you but...

1)a: S-AFC to sort out the top end AFR's a tad.

b: R32 ROM reprogram or other ecu to sort out the ignition maps that aren't going to suit the cams you now have. This is probably the biggest probelm the motor has at the moment.

2) Do the trans. Stall and shift kit it.

3) Have you gutted the standard R32 box of that air baffle thingo they have? If not probably do that and make sure there is a nice clean air feed (not familiar with r32 gtst's tho')

The MPH is better than the E.T, 2.5 sec 60ft even with over reving shifts means you got a 13 second car at the moment if you can knock it down to a 2.1 or so.

[WazR32GTSt]

thanks for the advice, rev210... jsut what i was after

i will be doing the ECU, but what i was waiting for was for my other engine mods to be done first. i'm not going to be doing much else to theengine for a while (have just done rb25 turbo and cam gears), so new EPROM is the go i think

trans will be next, however. shift kit is a definate. high stall? well i'm not sure that thie would suit the fact that its an everyday driver and lack of low-down torque is the problem at the moment.. i mean i could try to get like a 2300-2500rpm torque converter maybe? like a small increase? not sure about my options though and how much it will cost..

my airbox has been heavily tampered with. i have removed the baffles and re-routed 2 ram-air feeds.. next quarter run i might remove the air filter too..

a 13sec car?? really?? so you think dropping 60' by 0.4 will take almost a second off the ET?? hmmmmm

[rev210]

the mph is good enough, the 0.4 and perhaps a better shift or two will do wonders.