View Full Version : My Rotorstock 1/4 results
Last year I ran a 13.47 @ 106.33mph
60ft 2.26
This year with better, wider tyres and launch control I managed...
13.45 @ 102.73mph :rolleyes:
60ft 2.08
I struggled for grip a little and seemed to make a little less boost this time even though it was nice and cold this year. I think the car is a little bit heavier too with R33 GTR rear brakes and a half roll cage.
I was racing my mate in this STI RA, he beat me by 0.02 seconds!!!!! He sailed past off the line and I was catching him all the way, we pretty much crossed the line at the same time. With his low ratio box he crossed the line @ 8000rpm in fourth!
Would I benefit from lower ratios? I was thinking about changing my diff final drive to lower the ratios a little (keeping the S15 torsen).
what engine spec you running?
if you have shorter ratios you will benefit from acceleration but will lose top end.
Also remember because you will have shorter ratios you might be slightly quicker but you will also be changing gear more so that will lose you time. you need to find a happy medium.
mattkeeber
11-08-2008, 13:26
The wind was pretty strong - and a headwind too. I wouldn't be too fussed about the time.
I'm not worried about the time, just beating the scoob next year :D
I'm running stage 2, about 300bhp. I have a 1 piece ally prop, lightened flywheel, S15 diff and I was running 255 falkens on the rear. The TC does need setting up, but I didn't have a laptop with me.
Next year I should have a GT28RS, so I'll be running 330ish. I am changing up to fourth a little before the end of the 1/4, if I ran slightly lower ratios then I still wouldn't be adding a gear change.
Its great fun and somehow my 103k gearbox is still going :wack:
The wind was pretty strong - and a headwind too. I wouldn't be too fussed about the time.
Any idea how much difference a head wind makes? It was a bit breezy :)
[QUOTE=paullen;4164301]Next year I should have a GT28RS, so I'll be running 330ish. I am changing up to fourth a little before the end of the 1/4, if I ran slightly lower ratios then I still wouldn't be adding a gear change.
QUOTE]
No you would deffo be changing up a gear with shorter ratio,s.
less whell spin and you would of had him from what you have said:thumbs:
I don't think my 255/45/17 tyres helped much either, they are over 4% out.
So if I had slightly lower ratios, you think I'd be changing up into 5th?
200sxslide
11-08-2008, 16:09
a bit breezy???lol:nod:
had a good day at rotorstock yesterday think i saw ure car mate was u with another s14a that was the same colour ??
steve whittaker set a new european drag record in his supra 7.7@(i think)174mph awesome
saw lots of 200sx but my favourite ones had to be the pastel red and blue s13s that were down at the r.w.y.b drift arena most of the day
all in all a good day made even better by the excellent hks drag series come on big tone enter it next year in the street class youd be right up there ??and would love to see a 200sx whipping some skyline and supra butt :wack::thumbs:
I was with a red drift look 200 and two blue ones.
I missed the 7.7 run :mad: That car is awesome though :cool:
Nismo_Freak
11-08-2008, 17:20
For a stock turbo car you'd want a 4.08 or 4.36 rear end ratio.
For something larger you'll want to actually lower the ratio to around 3.5x or 3.7x, somewhere in that range.
The reason is with a 4.08 you will be crossing the line as you shift into 5th at 106 MPH. With a 255/45/17 you'll be crossing the line at the top of 4th at 106 MPH.
The reason for lowering the gears is to stay in boost longer. More shifting, less load, means less time spent making power in a bigger turbo car.
Right now with your combo you have a good big turbo gear setup, but you lack a big turbo, so it's just slowing you down.
Ok so, with a GT28RS, running 330bhp and 255/40/17 (gonna change them when I can afford it), what would be the ideal ratio to cross the line at the top end of fourth?
I need to do a bit more reading up on drag racing. Has anyone got any good links?
Saw you running 2 m8, and believe me from the stands it was quite breezy:wack:
Yust regretting the fact i didn't bring mine and drove there in my :sleep:diesel
See ya next year:wack:
Sideways14a
11-08-2008, 21:53
Something was seriously wrong with your car, i had a terminal of 103mph with just 250hp last year
On another run I hit a terminal of 107.11mph, but only ran a 13.61
:smash:
Saw you running 2 m8, and believe me from the stands it was quite breezy:wack:
Yust regretting the fact i didn't bring mine and drove there in my :sleep:diesel
See ya next year:wack:
Lol, I'll be there next year doing my best to beat the scoobies :wack: I'm think I'm going to get an auto diff and chuck my torsen in that.
This is what happens when we lose
http://img515.imageshack.us/img515/7306/dsc00186pp8.jpg
This is how much I was struggling to get off the line
http://img.photobucket.com/albums/v696/scott_saxo/IMG_0583.jpg
Thats a pretty much stock civic VTI! I did manage to get traction and beat him :wack:
I would ask the guy with the scooby to a dry track and see who,s better:rant::whip::D
:) Its ok, he was much slower at Japfest, although my mate in his RA was very quick out there!!!
If it had been 1/2 a mile the 200s would have easily won, we were pulling on the scoobs once we gained traction.
with a 107 terminal you should be able to run very low 13's if not scrap into the 12's
your low terminals could of been from an over keen traction control in the lower gears or a bit of clutch slip in the higher gears from too much heat in the clutch by slipping it off the start
330bhp should have you well into the 12's as 800bhp has shown running 12.5's
with a 107 terminal you should be able to run very low 13's if not scrap into the 12's
your low terminals could of been from an over keen traction control in the lower gears or a bit of clutch slip in the higher gears from too much heat in the clutch by slipping it off the start
330bhp should have you well into the 12's as 800bhp has shown running 12.5's
It could have been the TC as it wasn't setup perfectly. The clutch slipped when cold on the first run, but was fine after that. Thanks for the feedback :thumbs: I'm sure the car has a low 13 in it now and I'm determined to hit a 12 next year.
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