Jump to content
SAU Community

Whats 50rwkw Worth Down The Strip?

bretto

By bretto,
in Motorsport Discussion & Builds

 Share

Recommended Posts

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

Link to comment
Share on other sites
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

Link to comment
Share on other sites
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 :(

Link to comment
Share on other sites
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.

Link to comment
Share on other sites
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.

Link to comment
Share on other sites
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! >_<

Link to comment
Share on other sites
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
Link to comment
Share on other sites
  • 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.

Link to comment
Share on other sites
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).

Link to comment
Share on other sites
  • 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.....

Link to comment
Share on other sites
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!!!

Link to comment
Share on other sites
  • 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....

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • OST Micah
      RH9 R32 GTR Build Thread

      By OST Micah · Posted

      A year of slogging through this bearing issue and finally fixed. What a nightmare. The oil pressure increase did not fix the problem. If you would like to read all the details in case you ever run into a similar issue visit my thread on Yellow Bullet. https://www.yellowbullet.com/threads/continuous-rod-bearing-issues.2689569/?post_id=74193031&nested_view=1&sortby=oldest#post-74193031 In the end the rod bearings themselves were the issue. I had switched from ACL (first engine) to King because that was all we could get at the time and I thought nothing of it. Put the ACL's back in after a year of taking the pan off multiple times to change many things. Issue resolved. Can't believe it was just the bearings themselves all along. It has now been about two years since I drove the car on the street or had it at the track. At some point I had installed all solid and spherical bushings in the rear but had never aligned it since it just went on and off the dyno. Alignment was the first thing to do. (Old photo but same concept) Then I took the transmission out and went through it. This was my first gearset install and I've done about 15 since this one and learned a lot and wanted to apply some of these tweaks to mine. The aftermarket shift forks take very well to some modification and I wanted to make that change. Shifts are now super smooth and no having to find the gear. I also recut the 5th and reverse shift sleeves - always wanted to try this and see how well it works. It works very well! No grinds or having to do a second attempt going into reverse and 5th is perfect. Before During After Going back in In rummaging through my spare trans parts box I found the only parts I've ever broke on a stock trans; the 3-4 shift fork - twice!  
    • Kinkstaah
      R32 Gtr Long Term Love, Now Project

      By Kinkstaah · Posted

      It also depends on gearbox ratio. Those drag cars running 7s passes aren't doing it on an overdrive gear ratio (probably). 1:1 is "fine", the critical RPM for a 50' single driveshaft in chromemoly is 6900rpm.... ....but when you shift into 5th and use 0:73 or 0:8 it all changes. Do you know their rear diff ratio? etc. That's the stuff that matters with regards to it. Whether it actually matters given your use application is also relevent. You may never get into those scenarios, like most ruined GTR's from Western Sydney don't :p
    • Dose Pipe Sutututu
      R32 Gtr Long Term Love, Now Project

      By Dose Pipe Sutututu · Posted

      but for how long? would it handle a few laps around SMSP in anger? 
    • GTSBoy
      R32 Gtr Long Term Love, Now Project

      By GTSBoy · Posted

      And over it. Need to stop it coming through the floor.
    • Duncan
      RB30 Struggles from idle

      By Duncan · Posted

      Is it running the standard ECU? some sort of data log might help understand where timing, AFRs etc are at.  If it is standard ECU something like Nissan Datascan would help
×
×
  • Create New...