need help with slicks and size for my boosted dc2r...

**IEVAQ8** · 20-05-2009 11:19 PM

hey guys as title states...........

if anyone can help me out..................

i want to take my boosted dc2r back to the track and try and get its best time...........

the car is....
aussie dc2r................
stock dc2r aussie lsd gear box (4.4 final drive),
makes 240kw at the wheels,
red line is 8400rpm
max power is at 8000rpm..

last time i raced on toyo r888 semi slicks (205/50/15) and was crossing the line on the limiter in 4th gear....

im looking for some full slicks (M/T's)......cheers

p.s. i will be using stock aussie dc2r wheels (15 x 6)

**EG5** · 21-05-2009 12:37 AM

4.4 final drive on a stock dc2r gearbox ? Dont they come with 4.7?

Should try 24.5x8x15

**delsol9000rpms** · 21-05-2009 12:47 AM

The stock aussie dc2r gearboxes have the 4.785 final drive. To experiment with tyre sizes and speed in gears etc use this calculator and just see what trap speeds you get up to and pick your slick sizes accordingly.

have fun!

http://www.teammfactory.com/gearcalculator.php

**IEVAQ8** · 21-05-2009 09:23 AM

Originally Posted by EG5

4.4 final drive on a stock dc2r gearbox ? Dont they come with 4.7?

Should try 24.5x8x15

thanks, im not sure of final drive i thought aussie dc2r had 4.4..... i dont think i can afford to buy slicks just to try and maybe be wrong........lol

Originally Posted by delsol9000rpms

The stock aussie dc2r gearboxes have the 4.785 final drive. To experiment with tyre sizes and speed in gears etc use this calculator and just see what trap speeds you get up to and pick your slick sizes accordingly.

have fun!

http://www.teammfactory.com/gearcalculator.php

thanks, i'll give it a go

**joe.teg** · 21-05-2009 06:46 PM

umm i was under the impression that the vti-r came with the 4.4 final and the audm itr cam with a 4.7 final.
Give the slicks a go man... 8400rpm launches ftw... until you blow a gearbox or twist a driveshaft

**IEVAQ8** · 21-05-2009 07:38 PM

Originally Posted by joe.teg

umm i was under the impression that the vti-r came with the 4.4 final and the audm itr cam with a 4.7 final.
Give the slicks a go man... 8400rpm launches ftw... until you blow a gearbox or twist a driveshaft

i got some more info................. dc2r aussie 4.7 final drive.............

maybe 6000rpm launches with launch control via hondata s300...............i got built drive shafts to suit my power and application................they better not break..................and box is all perfect with fresh bearings throughout..........

**joe.teg** · 21-05-2009 08:08 PM

mate... then your set... up the boost, install the slicks and your just a passenger hhaha... what boost are you running atm and what is your latest track time?

I just had a crazy idea while i was in the shower... EG HATCH + K20A + HKS GTRS + 15PSI = UNBEATABLE... this is my next car which i will be doing myself

**EG5** · 21-05-2009 09:58 PM

Originally Posted by IEVAQ8

i got some more info................. dc2r aussie 4.7 final drive.............

maybe 6000rpm launches with launch control via hondata s300...............i got built drive shafts to suit my power and application................they better not break..................and box is all perfect with fresh bearings throughout..........

The key not to break the axles / cv : Dont bog off the line , its better to spin and grab traction compared to 100% traction off the line.

More traction = more chance to break the Axles / CV.

I dump the clutch at 7000 rpm on slicks , Over 50 passes now on EGK24A , never break any axles.

**Benson** · 22-05-2009 08:08 AM

Yonas knows his stuff..

The key is not to bog!

**IEVAQ8** · 22-05-2009 01:37 PM

Originally Posted by joe.teg

mate... then your set... up the boost, install the slicks and your just a passenger hhaha... what boost are you running atm and what is your latest track time?

I just had a crazy idea while i was in the shower... EG HATCH + K20A + HKS GTRS + 15PSI = UNBEATABLE... this is my next car which i will be doing myself

im only on 7.5psi............best time with toyo r888 semis was 12.88 at 113mph

Originally Posted by EG5

The key not to break the axles / cv : Dont bog off the line , its better to spin and grab traction compared to 100% traction off the line.

More traction = more chance to break the Axles / CV.

I dump the clutch at 7000 rpm on slicks , Over 50 passes now on EGK24A , never break any axles.

thanks yonas..........i got built axles and cv's so they should hold up......

**EGB18CT** · 22-05-2009 03:25 PM

you can also try pre loading off the line especially with the 24.5x

Tom - have you looked into the lenso drag rims they all have over in the usa? you could get a cheap set with skinnies for the back too. What yonas mentioned would seem the way to go, you dont want to go too big else you could lose time. 13" m/t would also suit for your power but i dont think they would clear the itr brakes?

have a look on honda-tech.com and see what the guys there are running, most will run a 13x8 with the bigger cars moving up to the larger 15" slicks.

Although if your using a 15" rim go what yonas mentioned 24.5x8or9x15 and pre load off launch building some boost