Jump to content
SAU Community

How Much Power To Run 9Sec In Gtr?

sky30

By sky30,
in Motorsport Discussion & Builds

 Share

Recommended Posts

Lithium Grand Master

Lithium

Posted
Posted

Full weight GTR? Stripped out? Full street tyres, drag radials, DOT tyres or full slicks? What kind of transmission?

Depends on whether you are building a full on drag car or want to do it with a full street car.

sky30 Mentor

sky30

Posted
  • Author
Posted

Full weight GTR? Stripped out? Full street tyres, drag radials, DOT tyres or full slicks? What kind of transmission?

Depends on whether you are building a full on drag car or want to do it with a full street car.

Mine is r32 standard weight and gearbox, 400rwkw and fedral street rubber i ran 6.8 @ 107mph for 1/8 mile. 60' was 1.64 on that run but have done 1.57.

Other r32 with similar power and 1/8 times do around 10.4@136mph.

Looking to push a little more power out if mine ( just wondering hiw much miore i need) and prob get sum drag radials on the rear.

Anyone know what 1/8mile time to do 9.9 sec 1/4?

blk180 Veteran

blk180

Posted
Posted

How about you suck up, get off the pussy 1/8 mile and live your life a 1/4 mile at a time

Oh and in absolute theory your 1/4 time will be double. So you would have had a 12 sec pass

Thats bad theory seeing as your already doing 107mph.

This 10.2sec pass is close to your 1/8 pass times and speed

http://www.skylinesaustralia.com/forums/index.php?app=core&module=attach&section=attach&attach_rel_module=post&attach_id=73060

  • Like 1
Hadouken Grand Master

Hadouken

Posted
Posted

No in absolute theory seeing as you have to travel twice the distance and it's taken x amount of time then x times 2 = result. Not power curve, inertia, speed already travelling.

Absolute theory. But how about he just goes to the 1/4 and do it. Wouldn't that be better than him telling his mates that he has a 9 sec car just because he trapped 6 sec on the 1/8 mile?!

f**king dumbfounded I am.

Nee-san Grand Master

Nee-san

Posted
Posted

No in absolute theory seeing as you have to travel twice the distance and it's taken x amount of time then x times 2 = result. Not power curve, inertia, speed already travelling.

Absolute theory. But how about he just goes to the 1/4 and do it. Wouldn't that be better than him telling his mates that he has a 9 sec car just because he trapped 6 sec on the 1/8 mile?!

f**king dumbfounded I am.

What the f**k, are you serious ?

SPEEDS IS NON LINEAR DUE TO SOMETHING WE CALL ACCELERATION.

GET TO THE CHOPPPPPAAAAAAAAAAAAAAAAAAAAAGGHHHH

usmair Mentor

usmair

Posted
Posted

Mine is r32 standard weight and gearbox, 400rwkw and fedral street rubber i ran 6.8 @ 107mph for 1/8 mile. 60' was 1.64 on that run but have done 1.57.

Other r32 with similar power and 1/8 times do around 10.4@136mph.

Looking to push a little more power out if mine ( just wondering hiw much miore i need) and prob get sum drag radials on the rear.

Anyone know what 1/8mile time to do 9.9 sec 1/4?

More info on these 400kw 32s that run 10.4 what tyres?

Mine should make 370kw once its done so with the above I should crack a 10?

NXTIME Grand Master

NXTIME

Posted
Posted

Seriously, those clowns bagging out the OP for his question and for trying to convert 1/8 mile times etc should wake up...If you look closely you will see that the OP is from SA where they only have 1/8 mile track to utilise and hence why the question is being asked...I'm sure that if the nearest 1/4 mile track wasn't over 1,000km away things would be different.

Stop bagging people and post info that is actually relevant and provides postive answers.

sky30,

There are calculators for various conversions that can estimate times. ET. MPH, and horsepower given a set of parameters. This even includes an 1/8th mile to 1/4 mile converter.

See here for one such page with these calculators:

http://www.hotrodpitstop.com/tool.php

Bare in mind that most of these types of calculators are US-based so they will have weight in pounds with horsepower at the crank. Other pages/calculators give the option to input hp at the wheels.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Be warned - with drag radials there is a fair chance you'll smash a front diff if it's a stocker. Could take the sump etc with it.

I've done it, and a few other people are the trap have as well. Just something to be mindful of.

Was managing 1.5 60ft's on a airport surface with 360rwkw/7800rpm launches.

NXTIME Grand Master

NXTIME

Posted
Posted

using that page's calculator, a 6.8 1/8 mile ET converts to a 10.7 1/4 mile ET.

In order to run a 9.9 sec 1/4 mile Et you will need to run around 6.25-6.34 1/8 mile ET.

I would also suggest that you would need 450rwkw.

1.57 60' is very good for street rubber, however, some drag radials on the rear would improve this and therefore improve your 1/8th and 1/4 times.

NXTIME Grand Master

NXTIME

Posted
Posted

R31, OP says he will use DR's on the rear only, so that should help gurad against front diff breakages. Although, it is not a guarrantee that it won't necessarily not happen.

btw, i'm not sure what the quickest 1/4 mile time using a stock r32/33 box is, but it may well be in the 9's...

NXTIME Grand Master

NXTIME

Posted
Posted

This calculator is better than the one I have posted earlier:

http://www.wallaceracing.com/etcalc.php

Although the 60' and 1/4 MPH inputs might not apply accurately to AWD turbo cars (more NA and dedicted drag cars)

sky30, I would suggest that you will require approx. 430-350rwkw with a 1.5 60' with 6.25-6.3 1/8 mile ET to equate to a 9.9 sec 1/4 mile ET

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

    • Sean'O
      3D printing fun

      By Sean'O · Posted

      Just one more post to show the final result and the original "janky" solution for a laugh. Everything feels really tight and no wobbling at all, very pleased 🙂
    • 25RBGT
      Got this r31 silhouette flood car to rebuild.

      By 25RBGT · Posted

      After drying a few days, time to put her back together 
    • Watermouse
      Hypergear Turbochargers and High flow Services Development thread

      By Watermouse · Posted

      Ahh ok, thanks again for your valued insight Tao
    • MBS206
      R32 GTS (RB20DE) clogged cat

      By MBS206 · Posted

      The hot exhaust light will come on not from just the cat being blocked, but it's just a temp sensor, and it's designed to warn you to not do things like park in long grass.   If you've been pushing the motor a bit, it can cause the light to come on.   Second if the cat is rattling, I'd suspect it's not blocked, but instead falling apart inside.   The easiest "fix" until you can get a cat put back in, is to unbolt your one, bash the rest of the insides out, and then bolt it back in.   For a daily driver/street car, I am in agreeance of put a cat in the car. If it were race car I wouldn't care if it were removed.
    • Sean'O
      3D printing fun

      By Sean'O · Posted

      No worries at all 🫡 I think the most satisfying things to make are the little bits that are just impossible to find or they're no longer manufactured. Generally I always try to replace parts with OEM wherever possible. This little project is also great because it'll never see the light of day, but strengthen these brackets so it's not just relying on the little standard screws in the headlight plastic. As soon as I saw the standard brackets and screws I thought, "well I'm not going to install with just the screws, the plastic tabs will just snap off". It's crazy how expensive everything has become yeah. But I suppose that's supply and demand; granted it's a lot easier to get brand new genuine parts these days which is fantastic 😊, I don't have to get totally reamed at the local Nissan dealer ha ha We sure are lucky we have all these manufacturers making parts these days, a few really great Australian companies too like Platinum Racing Products and Fit Mint Automotive, what a time to be alive ❤️ . I've got my eye on the RB26 head by PRP as mine has a very fine hairline crack, so that'll need to be addressed some time in the future. If you have any requests or odd things to make feel free to let me know and I can have a crack at making replacement parts ✌️
×
×
  • Create New...