In:
https://honda-tech.com/zerothread?id=613955
I showed front poly bushings that could add caster.

The guy said they would add about 3/4* of caster. He didn't recommend them however, for a street car, because he claimed increased tire wear, and that the improvement in cornering would only be felt in higher speed corners anyway. I will confirm the 3/4* number.

I read up on the swapping UCA threads, and it adds 2* of caster. Now if people liked it, then 3/4* is relatively small.

I also read the stuff in the Ground Control site that adding caster causes diagonal corner weights to shift in an undesired direction during tighter corners.

Conflicting info...

My goal is a fun-to-drive street car. I already have ES100 tires, H&R OE Sport springs and Knoi yellows, and a rear sway on order. I want a responsive, neutral handling car.

 

umm caster mainly affects straightline stability, and I don't think that changing caster really affects tire wear all that much. If you don't know, caster is the angle the shock makes w/ the ground when viewed from the side of the car. If the shock is straight up it's 0 caster. I think if the shock leans towards the back of the car, it's positive caster but I'm not sure. Positive caster helps keep the steering wheel centered, and will also make the camber angle change when you turn a corner (positive camber on inside tire, negative on outside). Ever seen the front tires of a Mercedes lean to one side when it turns sharply in a parking lot? That's because the struts lean backwards with somewhere in the range of 5-10 deg. of positive caster.

Are you sure those bushings don't change CAMBER instead? Changing caster on a Honda w/ double-wishbone front suspension is pretty much impossible, unless you move the entire upper control arm towards the front or the back of the car.

 

Castor is the angle of the line that connects the lower- to the upper-ball joint; has nothing to do with the damper on a non-strut vehicle like most Hondas.

 

caster primarily affects 3 things:

- steering forces

- stability

- camber variations when the wheel is turned (see some cars when you turn the wheel, the front wheels lean to one side? thats a lot of caster)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Greyout &raquo;</TD></TR><TR><TD CLASS="quote">caster primarily affects 3 things:

- steering forces

- stability

- camber variations when the wheel is turned (see some cars when you turn the wheel, the front wheels lean to one side? thats a lot of caster)</TD></TR></TABLE>

Yup.

Castor will not affect tire wear at all, unless you are running mega-super-mad castor, then it will take chunks out of the tires when turning. But you will never be able to get that much out of a stock suspension.