Hello all, I finally got my new polyurethane bushings. But Front Lower Control Arm Rear Bushing are the model with excentred hole. I know this kind of bushings are made for decreasing or increasing caster, but what will be the effect of a modified caster on the car driving? And the most important, what is the correct mounting direction? Which one decreases and which one increases caster..? (sorry for the child drawing)
increase caster you want the upper drawing. increasing is what you want to get more wheel base and better handling. the only ill effect is your turning radius increases. don't forget to do an alignment afterwards.
Let's go for the upper drawing. Thank you Mafix. I will definitely have to do an alignment afterwards as every part of steering/suspension is brand new. Thanks again.
I have the whitelines ones and they are a great help. Have to say though, with all that new suspension, it will be so nice and tight feeling, individual changes will be prob hard to pick up.
Can't see why anyone would want to increase caster (ie wheelbase)??? It slows steering, decreases cornering grip, and affects shock sensitivity Compare a Superbike with a Chopper and the effect is the same All my years racing, the object was to decrease caster (improve steering) and wheelbase (improve cornering). A longer wheelbase is only beneficial in ultra high speed applications ie Drags, F1, Land speed records, etc where you don't want the car moving around at speed Race cars use increased caster to get the front wheels to "lean" into the corners more, but they change the kingpin angle - not the shock angle or wheelbase!! Yet another misinterpretation that aftermarket suppliers have made billions out of. Take a shock damper and press it in, now turn it at 45 deg and try it again.... shocks don't work leaning over Oxi, I think try them both ways and let us know which is better, the Celi is oversized as far as sports car specs goes
i tend to find: increased caster = longer wheel base, increased handling at speed, battleship turning radius, more stabilized front end (pushes the wheels foward and slightly changes the balance point of the motor). stock caster = stock wheel base (similar to a CRX, believe it or not), high speed handling sucks, great turning radius, stock balancing decreased caster = short wheel base, horrid high speed handling (to the point of 100MPH becomes frightening), less than stellar weight balancing. the rear bushes on these chassis does change the caster angle and the wheel base. perhaps you are a little confused stig? increasing caster on the control arm pushes the stock arm out and foward.
Yeah, I'm confused why anyone would want to increase caster and pay good money to do it We're talking tiny amounts, so it may even be beneficial but I'm one of those sceptics who has to try it first, I can't believe Toyota got it wrong The front A-arm bush is fixed, so in effect increasing caster actually reduces front track width? Unlike wishbones you can't change caster at the hub or level out the wishbone. Apart from gokarts these are the best handling saloon cars in the world, everything looks normal but the front hubs are moved forward 1in, the rear axle is moved forward 2in. Note how far the engine has been moved backward, that's the airfilter sticking out the windscreen on a 55 IDA. The drivers seat, pedals and steering are moved backward as far as legally allowed also to help even out weight distribution The rear axle is completely adjustable and moveable Same car - Here we had to move the shock forward to cure a caster/camber f/up, car would'nt turn. Note how the motor now sits completely behind the front axle line Midgets and sprinters use the same principles to improve handling And the result: http://www.youtube.com/watch?v=FiAgdsGLups
i never saw a change in the track width on mine. i guess it should be narrower. did toyota get it wrong? no. but for 1 person the factory setting is right, someone else it's wrong. it all depends on what you do. look at toyheads selection of caster bushings. there are 6 sets IIRC.
