How much does suspension affect 1/4 Mile?

[Moya]

If a DC2 ran 14.8 on stock suspension, but King Superlows (WORST handling, ever. Bad bodyroll, no travel in shocks, always hits bumpstops etc) With nothing else changing, would there be any difference in 1/4 mile time moving to thicker rear sway bar and ITR Suspension or Coilovers?

On the same topic, what setup do you typically want while you run down the 1/4 mile? hard rear, soft front?

Thanks

[onlykillzz]

it shouldnt do much if anything as suspension affects your handling and since 1/4M is in a start line then..... any way you have a Honda so you can beat them around the corner and make it to the end alive not to pop monos and do 1/4M in 5 sec if you won that get a wrx/skyline/supra

[VTi_b0i]

it does affect the launch

[aaronng]

Only if you had traction problems.

[VTi_b0i]

i do :)

[IEVAQ8]

i have dc2r with tein super streets in it, i was running 14.60 all night for 2 meetings i had the rear set as stiff as possible and the fronts soft as possible, i spoke to a guy at the track with a really quick starlet and he told me he has his set up stiff on the front as well.
so.i stiffened it up to 6 clicks from hard, which is half way between fully stiff and stock type r damperning, (thast how i have it on the street) and with my semi slicks it went 14.20 first passs.............
i believe tyres and suspension make a huge impact on your 1/4 mile times

[grumpy rooster]

Suspension makes a huge impact on 1/4 mile imes as it affects traction, particularly off the line. Ideally you want it very stiff at the rear and approx 1/2 as stiff on the front in broad terms. The trick is to try and stop the front from lifting under acceleration hence why the real quick FWD cars run wheelie bars. They are set very close to the ground so that when the front tries to lift the bars touch the ground and then try to push the front back down. This is not strictly what happens but the easiest way to understand the type of movement going on through the chassis.

The other part in a suspension setup is keeping the suspension arms from tramping or hopping. A lot of this stems from engine mounts and driveshaft angles but it can be reduced with traction bars that bolt to these arms and try to prevent them from moving in the front/back motion that occurs.

Saying all this you can still get great traction with fairly simple suspension. You just need to keep all these basic things in mind when setting up your car. You don't need mega dollar coilovers to run 1.6-1.7 60ft times. ;)

[Moya]

Thanks for the replies!

grumpy rooster, can you give me more information on engine mounts helping down the 400m? I'm curious why. Thanks

[barefootbonzai]

grumpy rooster, can you give me more information on engine mounts helping down the 400m? I'm curious why. Thanks

better engine mounts stop your engine from moving all over the place. With less engine movement, you'll get less wheel hop and better transfer of power to the treads.

[grumpy rooster]

That is correct. Sorry I didn't reply back sooner. I missed the thread.