[QUOTE=LTDScott;17308698]After pulling the K-member and camber plates during an engine bay repaint on my Fox body LTD (pretend it's a Mustang, everything's the same), I got a front end alignment done. Based on research online (much of which came from MFE's posts here) I asked for these specs, as it's a weekend car that's set up to handle and I like to take it out on mountain roads and occasionally autocross:
- 4* caster
- -1.5* camber
- 0 toe
Front end parts:
- MM K-member
- MM Fox length control arms, 0 offset
- '96+ spindles
- MM coilovers on Bilsteins
- MM C/C plates
- Cobra rack with MM solid bushings and bumpsteer kit
Anyway, this is an old school alignment shop with a pit, and the tech was a crusty old dude who clearly knew Fox bodies and MM parts. There was even a Fox Mercury Capri sitting in the parking lot that was chock full of MM parts which he told me he had worked on, so this wasn't like driving onto a Hunter rack at Sears.
When I gave him the specs I wanted, he seemed to balk at the caster. At first he thought the caster was too much and said it would cause the front end to understeer. Once he was actually working on the car, he said the caster was already over 5 degrees, so he had to move the struts forward to get down to 4. I thought that was odd, but sure enough the camber plates tell the story.
I drove the car home and it seems fine, but now I have to wonder if I should run more caster. The struts tops seem to be squarely in the middle of the hole on the strut towers, so there it seems like there is more adjustment left. Is there any reason why I shouldn't run more caster? I've read that too much caster can create bump steer, but I'm certainly no expert.
Too much over 5* can cause bs but you can adjust yours if necessary. Generally max caster is a good thing.