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Modified Skyline 0-100 Times

gwilkinson34
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Harey Veteran

Harey

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No idea what my 0-100 was, but went to the drags with a mate in a well modded early shape WRX (1250ishkg), he was running 12.5, I was 12.7, his lauch was hold limiter, and side step it, with semi slicks. I was holding the limiter and slipping, with exhaust, pods and boost, stock suspension and cheap road tyres, we were both getting 1.6 60ft, check this shot off the mark... This is why stock suspension is so good down the quarter..

Dude do you have some meditation music on in the car because you look so calm and relaxed as your front wheels are lifting in the air!!! Hahahaha

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Harey Veteran

Harey

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Harey: Did you get the pineapples done yesterday?

Did you notice any difference...?

Pineapples were fitted yesterday, the rear end feels tighter and better BUT still axle tramps like a WHORE!!!! ARGGHHHH!!!

I spoke to Chris and he said to bring it in for another look as it might be something like engine mounts or transmission mounts.

Sydney Kids list of axle tramp causes:

10% of the time it’s tyre pressures, the sidewall flexes and releases. Try pumping the tyres up and see if the axle tramp stops and/or gets less. done, made no difference

5% of the time it’s worn subframe bushes. Fitted pineapples and still axle tramps

25% of the time its drive shaft angle, the car is TOO LOW and the angle of the universal joints are winding up the drive shafts. If your car is lower than 345 mm centre of wheel to guard on the rear, then try raising it up. 350mm on the rear, so not that low.

60% of the time it’s incorrectly matched spring and shock damper rates. The rebound (extension) damping is not sufficient to control the oscillations of the springs. Standard springs with worn shocks get this problem. BRAND NEW aftermarket coil overs get this problem where the spring rate is too high for the shocks to control. I have brand new bilstein shocks all round

I am starting to run out of ideas!

Edited by Harey
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gwilkinson34 Collaborator

gwilkinson34

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Mine seemed to have started doing it a little (nothing too bad) a while back, but after fitting my lowered king springs it has cured it... just spins away now...

Good luck finding a cause - if you do be sure to post it up in case anyone else is having the same issue.

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Granthem Mentor

Granthem

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Pineapples were fitted yesterday, the rear end feels tighter and better BUT still axle tramps like a WHORE!!!! ARGGHHHH!!!

I spoke to Chris and he said to bring it in for another look as it might be something like engine mounts or transmission mounts.

Sydney Kids list of axle tramp causes:

10% of the time it’s tyre pressures, the sidewall flexes and releases. Try pumping the tyres up and see if the axle tramp stops and/or gets less. done, made no difference

5% of the time it’s worn subframe bushes. Fitted pineapples and still axle tramps

25% of the time its drive shaft angle, the car is TOO LOW and the angle of the universal joints are winding up the drive shafts. If your car is lower than 345 mm centre of wheel to guard on the rear, then try raising it up. 350mm on the rear, so not that low.

60% of the time it’s incorrectly matched spring and shock damper rates. The rebound (extension) damping is not sufficient to control the oscillations of the springs. Standard springs with worn shocks get this problem. BRAND NEW aftermarket coil overs get this problem where the spring rate is too high for the shocks to control. I have brand new bilstein shocks all round

I am starting to run out of ideas!

You just need more power to spin the rear wheels better :)

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Harey Veteran

Harey

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chris will sort it out

just because brand new, doesnt mean fitted properly or setup correctly

Chris fitted them :/

Yeah I am going to drop it back there and let him do his thing.

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Harey Veteran

Harey

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You just need more power to spin the rear wheels better :/

Yup I agree but surely at some speed I will want traction :)

Anything on the edge of traction and it axle tramps harshly.

Cold tyres and 4k rpm clutch drop and no axle tramp hahaha

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Kinkstaah Grand Master

Kinkstaah

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I dont get how you 170rwkw 33s are pulling 0-100 in sub 5's.

Thats porsche/ferarri/lambo territory. With double the power and similar weight. And they get loads of traction, the standard tires are wider then my cars 4 tires laid side by side :ermm:

I personally would take the gtech readings with a grain of salt

Reading this thread (Digging up threads = searching, har har!) I ended up feeling slightly curious.

If the R35 has 290 awkw and weighs 1740kg, and can get 3.5's you would think surely a 300rwkw GTT/GTST would be well under high 4's given they have the same power and weigh a couple of hundred k's lighter provided they don't lose traction

I am curious to read what Joeyjoejoe/hamish's car actually gets as he said it pulls 285rwkw and doesnt lose any traction in first...

Obviously its not only power and weight and traction that matter, would it simply be the extra (obviously a lot extra) low down and mid range torque to produce figures like 3.5 in a R35? Shorter gear ratio? What do 300-400awkw R32-33-34's get to 100kmh provided traction is no problem? Suppose it would depend massively on how responsive their relative setups are. 100% suspension based? Bit of both?

Curious minds want to know, and prefer to dig up old threads then generate new ones. :)

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pipster11 Grand Master

pipster11

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my stagea will do 5.65 and thats only on 10psi, no tune, clutch slipping a bit (manuel :bunny: ) and about 150 awkillerwasps

just a chirp from the rears and away you go

eventually the car will see a highflow, nisstune, new clutch and wider wheels (not really needed)

will be interesting to see how much the extra weight affects things

(stock weight is around 1650-1700kg)

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tricstar Mentor

tricstar

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my old GTR R33 with 400rwhp did 4.5 seconds consistantly with ok launch, I would be surprised if theres not some high pwered ones doing sub 4's

the new GTR only has @370kw and does it in 3.7

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Harey Veteran

Harey

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Posted (edited)
Reading this thread (Digging up threads = searching, har har!) I ended up feeling slightly curious.

If the R35 has 290 awkw and weighs 1740kg, and can get 3.5's you would think surely a 300rwkw GTT/GTST would be well under high 4's given they have the same power and weigh a couple of hundred k's lighter provided they don't lose traction

I am curious to read what Joeyjoejoe/hamish's car actually gets as he said it pulls 285rwkw and doesnt lose any traction in first...

Obviously its not only power and weight and traction that matter, would it simply be the extra (obviously a lot extra) low down and mid range torque to produce figures like 3.5 in a R35? Shorter gear ratio? What do 300-400awkw R32-33-34's get to 100kmh provided traction is no problem? Suppose it would depend massively on how responsive their relative setups are. 100% suspension based? Bit of both?

Curious minds want to know, and prefer to dig up old threads then generate new ones. :bunny:

I think the highlight here is "provided they don't lose traction".

Personally, I dont understand how Joeyjoejoe can get traction in 1st gear with 285rwkw with a gentle takeoff and then full throttle, I simply cant believe he can launch hard without traction problems on street tyres.

I have 190rwkw with 275 wide new Kumho KU36 tyres and if I launch with anymore than 3,500rpm its too much wheelspin (yes slipping the clutch so controlled launch).

This is compared to the R35 that I understand can launch as hard as you want with full traction. I cannot comment on R32/33/34 GTRs as i have no experience with them.

This is why I am not going to bother fitting a larger turbo to mine, instead will upgrade to a GTR/EVO first.

Edited by Harey
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PM-R33 Grand Master

PM-R33

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I have 190rwkw with 275 wide new Kumho KU36 tyres and if I launch with anymore than 3,500rpm its too much wheelspin (yes slipping the clutch so controlled launch).

Don't tell me that! I was hoping my next tyres would be 265 KU36's and hold first :blink:

Personally, I dont understand how Joeyjoejoe can get traction in 1st gear with 285rwkw with a gentle takeoff and then full throttle, I simply cant believe he can launch hard without traction problems on street tyres.

Nismo 1.5 way and Nitto tyres are the key factor for his setup I believe.

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HEKT1K Grand Master

HEKT1K

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I have 190rwkw with 275 wide new Kumho KU36 tyres and if I launch with anymore than 3,500rpm its too much wheelspin (yes slipping the clutch so controlled launch).

sif! are you sure there isn't some other problem with your setup? (not having a go at you, i just find that hard to believe.. 275 is huge!)

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Harey Veteran

Harey

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Don't tell me that! I was hoping my next tyres would be 265 KU36's and hold first :blink:

Nismo 1.5 way and Nitto tyres are the key factor for his setup I believe.

I have only ever had the car with 275 KU36s so I cant comment on how much better they are with different tyres. It holds first on mine when they are heated up, I am only saying with a 4,000rpm launch they spin too much for a good 0-100 time.

Yeah the Nismo diff and Nitto tyres will obviously help a lot but I still struggle to comprehend them holding a 4,000rpm launch with 285rwkw. Joey please dont take this as an attack as I am new to skylines but its hard to comprehend for me. Would love to see it though :)

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Harey Veteran

Harey

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sif! are you sure there isn't some other problem with your setup? (not having a go at you, i just find that hard to believe.. 275 is huge!)

Brand new bilsteins, king springs, pineapples, lower control arms, upper control arms. Launches and spins wheels smoothly. I have quite a grippy clutch so maybe thats contributing a bit as it doesnt allow me to slip it much??

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HEKT1K Grand Master

HEKT1K

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yeah it depends on the type of clutch i guess. if it's a button, they don't like being slipped.. just gotta rev it and dump so i've read.

sounds like you've got all the goodies and it still shreds tyres :blink:

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