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<blockquote data-quote="defcon1" data-source="post: 1367987" data-attributes="member: 30064"><p><u>Suspension Mods</u></p><p></p><p>The Cefiro has 4 major problems with regards to handling :</p><p></p><p>a) Suspension overall is too soft.</p><p>b) Undercarriage bushings are too soft and tend to wear out regularly.</p><p>c) The rear torsion bar makes the car handle a little like a truck with a huge turning radius. Also, torsion bar bushings are not replaceable i.e. Tan Chong does not have parts for it and therefore, if ever, we will be forced to replace the entire rear assembly.</p><p>d) Turning radius is...um...humungous... :sad:</p><p></p><p>My suspension upgrade pathway is as follows:</p><p></p><p>i) As I would have spent all my money on my engine, my first stage would be to get the springs cut. This will toughen up the springs slightly making the car handle slightly more positively. It will also give me a chance to wear out my current absorbers (slightly stiffer than stock). Of course, knowing myself, I will probably be back at Richard's in 6 months or so for a set of Titans... <img src="https://zerotohundred.com/forums/styles/default/xenforo/smilies/laugh.gif" class="smilie" loading="lazy" alt=":laugh:" title="Laugh :laugh:" data-shortname=":laugh:" /></p><p></p><p>ii) There is a company in Australia that I organized a group buy once of suspension parts for Celicas, Whiteline. I think they may remember me, as I put them in touch with the GT4 Club (it's a worldwide Celica enthusiast club) and they have since become a preferred supplier based on my assessment and review of the suspension mods that they supplied. I think I may be able to get them to cut polyurethane bushings for us, and even replacements for those in our torsion bars. There are several grades of polyurethane...depending on hardness. I wouldn't, for example, get the same grade as I did for the Celica as those were bloody stiff. A softer grade, and their recommendations as to which to change and which to maintain as stock would suffice. Not sure as to costs, I will enquire.</p><p></p><p>iii) I will need to persuade Richard to custom make pillow ball mounts for us. I think he charges about RM 400 per pair for them. Make "offset" mounts that would increase both our camber and castor. This will result in better handling and better stability. I'll work on how much camber and castor to adjust. This will also improve our turning radius. Problem is, he is too busy...but with enough interest, he may relent.</p><p></p><p>iv) The Cefiro is a heavy vehicle. It benefits greatly from pillar strut bars..both front and back (if possible) as well as fender bars. Anything to hold the chasis rigid. Perhaps a group purchase with Ultra Racing?</p><p></p><p>These are my intentions with regards to my vehicle. If any of you are interested in joining, please let me know. But serious participants only please. I enjoy organizing these things...and you have my word...I do not profit from these activities. But I insist on serious participants as indecision makes organizing more difficult by magnitudes... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1425" alt=":smile:" title="Smile :smile:" loading="lazy" data-shortname=":smile:" /></p></blockquote><p></p>
[QUOTE="defcon1, post: 1367987, member: 30064"] [U]Suspension Mods[/U] The Cefiro has 4 major problems with regards to handling : a) Suspension overall is too soft. b) Undercarriage bushings are too soft and tend to wear out regularly. c) The rear torsion bar makes the car handle a little like a truck with a huge turning radius. Also, torsion bar bushings are not replaceable i.e. Tan Chong does not have parts for it and therefore, if ever, we will be forced to replace the entire rear assembly. d) Turning radius is...um...humungous... :sad: My suspension upgrade pathway is as follows: i) As I would have spent all my money on my engine, my first stage would be to get the springs cut. This will toughen up the springs slightly making the car handle slightly more positively. It will also give me a chance to wear out my current absorbers (slightly stiffer than stock). Of course, knowing myself, I will probably be back at Richard's in 6 months or so for a set of Titans... :laugh: ii) There is a company in Australia that I organized a group buy once of suspension parts for Celicas, Whiteline. I think they may remember me, as I put them in touch with the GT4 Club (it's a worldwide Celica enthusiast club) and they have since become a preferred supplier based on my assessment and review of the suspension mods that they supplied. I think I may be able to get them to cut polyurethane bushings for us, and even replacements for those in our torsion bars. There are several grades of polyurethane...depending on hardness. I wouldn't, for example, get the same grade as I did for the Celica as those were bloody stiff. A softer grade, and their recommendations as to which to change and which to maintain as stock would suffice. Not sure as to costs, I will enquire. iii) I will need to persuade Richard to custom make pillow ball mounts for us. I think he charges about RM 400 per pair for them. Make "offset" mounts that would increase both our camber and castor. This will result in better handling and better stability. I'll work on how much camber and castor to adjust. This will also improve our turning radius. Problem is, he is too busy...but with enough interest, he may relent. iv) The Cefiro is a heavy vehicle. It benefits greatly from pillar strut bars..both front and back (if possible) as well as fender bars. Anything to hold the chasis rigid. Perhaps a group purchase with Ultra Racing? These are my intentions with regards to my vehicle. If any of you are interested in joining, please let me know. But serious participants only please. I enjoy organizing these things...and you have my word...I do not profit from these activities. But I insist on serious participants as indecision makes organizing more difficult by magnitudes... :smile: [/QUOTE]
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