Traction problems on 300+ 4wkw GTRs?

[akira]

A quick question 4 big Hp GTR owners with over 300 4wkw.

with attessa, how much of a problem is traction upon launch of GTRs?

I've been told that GTRs with over 300 4wkw will wheelspin...is this true?

[Munro]

they will either wheelspin or bog down.Wheel spin is faster as long as it's not for too long.the attessa will transfer torque to the front after rear has lost traction.Even GTRs with 250-270rwkw will break traction if your not weak.Over 300rkwk & you need more torque at the front straight away.The R34 has more front bias than the R33 but even they need a torque split controller of some type to be qucik off the line.at the drags Nittos are the only way to go.My race car needs a minimum of 7500rpm or it bogs.The stocky R34 needs at least 6500rpm.With a small capacity turbocharged engine there is no perfect hook up like a V8 can achieve.You just have to find the best compromise & give it heaps.

Be prepared to break stuff before you get it just right.If you dont like holding the limiter & sidestepping the clutch - forget about launching a GTR properly.

300rwkw is not that big power for a GTR.Be great fun in a GTSt though!

[akira]

Munro,

that was exactly the type of info I was after. thank you very much for sharing info with us.

BTW: have you used nitto tyres on the track or the street?

how do they perform? I have a set coming out with my car and was wondering if they could be used for track days as well as street/strip duties?

thanks again

akira:)

[Munro]

Nittos are for Drag racing.i think the japs use them on the street, but I haven't 'cause I dont want to wear them out.Nittos do not have the sidewall constuction to be used on the track(circuit), I would recommend Bridgestone RE540s they are awesome & can be used on the street as well, probably ok at the drags too up to a certain power level - after 300rwkw Nittos are the best hands down.If you can only have one set for all purposes go for the RE540s, if you can afford a 2nd set Nittos will improve your 1/4 times no end.They are a bit sensitive to contaminants such as oil, coolant,road grime etc so I would keep the Nittos just for the drags & use RE540s for street/circuit. 1/10th on your 60' time equates to 3/10th at the traps & the Nittos should give at least a 2-3/10th advantage on the 60' time.Well worth the investment.

Have fun - enjoy your GTR.

[GTS-t VSPEC]

Munro,

I am getting some Nitto's for my GTS-t next week, how much do you need to warm them up before launching. I have heard conflicting reports from a huge burnout, to practically nothing. Plus what tyre pressure would your recommend?

See'ya:burnout:

[Xeron]

alot of people in the US run nitto 555's as a street tyre, cause well they are one. I mean there not a wrinkle wall or anything.

U dont need a big burn, if u burn too large ull kill the tyre.

[Metallica]

Akira- Can you tell us what GTR your getting r33-r34?? and how much are you importing it for?? total cost involved?? im looking desperately.. and have found that a RZ is starting to look attractive cause the GTR r33 (my fav) is a bit too much when compared..

any info would be cool..

thanks mate..

d

[Metallica]

RZ= Supra... sorry...

[Munro]

Awwwh.Get rid of that volkswagon please!!!

Well when in Rome..... Every Jap video of drags that I have seen shows huge burnouts on Nittos to get them hot.

On the US mustang website they state that they must be

HOT,HOT,HOT. They are not a normal street tyre at all.Normal street tyres do not require big burnouts but Nittos do.

I have only been using 2nd gear on the burnout but from now on

I will be using 3rd & heaps of revs to get em boiling before the launch.Besides it's more fun & the compound will go off before you wear them out anyway.

I have found 12 psi about right but I run 15psi in the front.

[GTS-t VSPEC]

Munro,

Thanks for that. I will smoke them up when I get them on:D

See'ya:burnout: