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Whats 50rwkw Worth Down The Strip?

bretto

By bretto,
in Motorsport Discussion & Builds

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bretto Proficient

bretto

Posted
Posted

Hey guys

just wondering from a few of you with a bit of experience with drag racing in skylines, what would 50rwkw be worth in an r32 gtst??

I had a r32 a few yrs back which made 125rwkw (i dont care how low you think this figure is) and ran a 14.1 with a slightly slipping clutch.

Ive just had my car tuned and was told it made approx 175rwkw on the same dyno. Now the dyno is known to read up to in one case 40rwkw low, so i cant trust reading other ppls power figures to time run. With a decent run and the fact i have a very good clutch now rather than when i had a stocko on the original car what time do you think it would run realistically?

Thanks for your help.....Brett

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Nismo_God Veteran

Nismo_God

Posted
Posted

to get a 14.1 with 125 kw is pretty impressive, maybe too empressive. did you get it dyno'd at the same place? i have 169 rwkw and with street tyres i have a 13.7 and i have been told that is good. 14.1 is a good time for a skyline, so with the right driving you probably get low 13's

GTshortie Proficient

GTshortie

Posted
Posted

I think one of the guys in a R32 GTST(RB25turbo) with around 180-190rwkw did a 13.6 pass.

well there is only one way to find out go down to the strip and see what it can do,

you can never trust dyno figures its a tool for tuning :(

chris davey Enthusiast

chris davey

Posted
Posted

You need to mention trap speeds. ET varys on power deliver and traction.

For example, I ran 13.3 with 215rwkw. Sounds about normal depending on what type of car and weight. But I did it at 114mph. So initially you could think that that was about right maybe a bit slow. Then when you mention the MPH you can see that there is power there but it hasn't been used efficiently.

Nismo_God Veteran

Nismo_God

Posted
Posted

to add further i ran a 13.4 with a trap speed of 103.5mph, the 10mph difference but only 0.1 sec slower. his car is more powerful showing greater speed but mine was a tidier run, more effective use of power. could be slipping clutch, wheel spin, poor launch, slow gear change, missed gear, bad tune.

GTshortie Proficient

GTshortie

Posted
Posted

Chris Davey: Is that 215rwkw in a Corona or R32 R33 GTS?..

Bretto:

When you do your run as Nismo_God has said; 60ft, Trap Speed & ET are all important factors to consider when judging your power.

have fun! >_<

bretto Proficient

bretto

Posted
  • Author
Posted (edited)

thanks for the reply's ppl.

firstly yes it was at the same shop.

gt shortie i agree, thats why i asked, not sure if i wanna run it for fear of breaking something :ermm:

it was just under 100mph, but it was yrs ago, but i remember that. like i said the dyno is known for reading very low power figures. thats why im not worried about the 125rwkw (on that note, he had a stock standard r32 gtst on the dyno and it made 80rwkw, that should give u an idea of how low the dyno reads). after reading the rb25 turbo upgrade post on here and seeing some power figures some ppl are making with dyno graphs it makes me laugh.

Edited by bretto
  • 2 weeks later...
Abo Bob Grand Master

Abo Bob

Posted
Posted

I can't see you breaking much with 175rwkw. Take it down and let us know how you go.

To add to the thread. How much difference do people think 50rwkw will make at higher power levels?

GTShortie I think got a 12.7 or 12.6 last sunday and I got a 12.4. I think he has about 50rwkw less than me but probably a lighter car. Mine is 1580 with me and a full tank.

benm Grand Master

benm

Posted
Posted

The lower the initial power (ie 125rwkw) the more difference the extra 50rwkw will make.

ie; The improvement in time from 125-175rwkw (maybe 0.5-0.7sec) than you will if you go from say 700-750kw (maybe 0.1 or 0.2sec).

  • 2 weeks later...
  • 1 month later...
FATGTS-R Experienced

FATGTS-R

Posted
Posted

As someone mentioned you cant say 50rwkw equals x amount of tenths of the time as it depends on the initial power the 50rwkw was added to.

A 50kw increase on a 500kw car is a power gain of 10%. Whereas in your case the 50kw going from 125 to 175kw is a 40% power gain.

And you cant compare to other peoples results as you mention the dyno you went on is a little out of whack.

Which leaves only one way to find out.....

evil_weevil Grand Master

evil_weevil

Posted
Posted

burnsie - as was stated the mph will be a true indication to power - your 13.9 was a very clean run, everything worked well.

my car just with the cat back did a 14.5 @ 95 with a 1.9 so around the 140-150rwkw

Chris - that 114mph is good for mid to high 12's!!!

  • 1 month later...
Nismo_God Veteran

Nismo_God

Posted
Posted

found this thread and have some more to add...

i ran a 13.426 with 1.970 60ft at 103.5mph with 169rwkw

now i rana 13.081 with 1.911 60 at 104.25 with say around 206(boost was higher then previously dyno'd)

so with an extra 35-40kw i made up 0.35 of a second....and not even 1 mph faster....

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