K20 Swapped Civic - PB TMP Lap Analysis

Finally achieved a 1:19.9 at TMP in my car
2000 Honda Civic CX Hatchback
K20A Engine & Transmission Swap
Koni Yellow Eibach Springs
255/40/17 Front Nankang CR-1/S Tires
225/45/15 Rear Nankang CR-1/S Tires
This episode talks about:
0:00 - Introduction
2:05 - Car and Mods
8:10 - Onboard Video
9:38 - Data Analysis

[@SebastianMocny]

Let's go!! Great video :)

[@FormulaDeltaOG]

Thank you!!

[@lamesamelame]

Interesting video. The times are very good 👍!..
With the Koni Stuts, what spring rates are you running with the KSwap?
I'm currently working on building an EG Coupe.

[@FormulaDeltaOG]

Hey there! I just want to caution that tire size, compound and sway bar sizing will influence your spring choice, so please adjust accordingly. If you want to use my setup as a starting point you are more than welcome to. I am running 900/550 lbs/in front/rear Eibach ERS springs.

[@lamesamelame]

@formuladelta4929 900lbs spring rates Wow 😳 ! I thought the 'Koni Sports' can't handle more than 600 lbs.

[@FormulaDeltaOG]

Well, the word handle is kind of used loosely in that context. I don’t know the exact technical specs of the Koni yellow’s valving for this application, but it does not have enough damping for the shock to critically dampen the 900lb/in springs, but it still does a decent job at it. The Koni yellow race shocks would be a better fit for the front spring rate, especially for a stiffer spring, but then I would lose the lifetime warranty, it’s a trade off for sure.

[@lamesamelame]

@@FormulaDeltaOG What would be the softest front spring rate you would run on a 15 x 8 rim with 225 wide tires on those Koni shocks? 🤔🤔

[@FormulaDeltaOG]

The rate here would more depend on the grip of the tires you are running and how low you want to keep the car.
If you are running really high grip tires then you want higher spring rate.
If you are constantly driving on smooth roads, with very little bumps then you can go higher spring rate.
If you are very low and have very little suspension travel left before bottoming out then go higher spring rate.
Good starting point for 200TW 225 wide tires on koni yellow shocks without going too low would be 500-700lb/in front and 400-500lb/in rear. Adjust to your liking from there.