Using Honda springs for coil overs

[NoHachi]

Quote:Keeper springs only add extra downwards suspension travel, below the static ride height.

Isn't downward suspension travel exactly what you need to keep springs captive?

Quote:Yes, but then how do you calculate the affect that roll has on your car at 1G? you'd need to know swaybar spring rate, static and dynamic roll centre position, centre of gravity, leverage on spring by suspension geometry, and weight of the car at each corner presumably. And then work out how to calculate how much this is going to tip your car at a certain G force.

Jep, thats what you do. And for the static situation its pretty damn accurate You seem to have a decent grasp on the subject, so why not give it a try. Most of the stuff you need can be found on the forums. Its an estimate, but it really helps you understand whats happening with the car.

Try 4.8kg first and hack a stock rear spring to get you lower and closer to 3.5kg/mm. People consider 8/6 a good combination because they are told that it is a good combination. The number of people with experience with multiple spring rates and actual hard driving are minimal. Just everyone copying each other and the need to validate their own purchases.
I dropped from 9/7 to 5.5/4.5 and the car is still very stiff, rolls a very small amount (most roll still comes from tire compression) and handles like a dream. Its more compliant on the street in that it now absorbs the biggest hits instead of being launched. In no way would I consider it comfortable and I think If I were to make it a dedicated street car, I would drop spring rates to 3.5/2.5 or something similar. Thats what most rally winning Escort mk2 cars run.