short stroked ?

rear trailing arm and torsion beam which has a separate coil spring and absorber setup, the spring tends to sag when the suspension drops... how much the arm drops depends on the length of the absorber... if u have a short stroked absorber, its fine because the drop is not significant... but if u have a normal stroke absorber, u have to becareful if the spring might just drop out of the seats... yes, a fairly shortened spring can drop out when the arm drops too low... this is what exactly happen to my current myvi rear spring + HWL absorber setup... when the car is jacked up, the rear trailing arm drops and the spring can be easily removed from the spring seat... this is very dangerous as the car hops over bumps, the spring might drop out and hit other cars... apparently this problem was also faced by our early batu tiga super saga racers... what they did was to tie a belt around the arm to the chassis so it does not sag that much... it was a crude but effective method... so, here is an innovation of their creation...

its kind of noisy when the suspension hops around... so if u can find a thicker and beefier belt or strap is much better...

oem rear spring

as most saga iswara owners who had coilovers knew our adjustable suspension ain't really a full adjustable suspension kit... the front one yes... but the rear ones are just normal absorber and sport spring... if u buy off the shelf coilover kits its perfectly fine for street use... but if u are looking for something slightly more motorsports (stiffer rate springs), u are going into a headache... front ones u can swap to any aftermarket coilover springs with stiffer spring rate as most coilovers shares the same dimension... as for the rear ones, manufacturers usually just make 1 spring rate and they did not even bother to specify the spring rate for that... as my previous post mentioned i did uprated my front springs to 8 kg/mm... this will upset the handling a little, depending on how u want the car to be setup... for my preference, i hate understeer... i prefer the car to be a little more tail happy... hence, uprating the rear springs is a must... picture below is comparison between HWL rear spring and saga iswara OEM spring... stiffness is more or less the same... only difference is the lowered height... hence u will get a slightly lowered ride height after installing it...

fortunately for us, saga iswara has been on our soil for over 20 years... many many of our elder generations had spent countless time and money on improving and upgrading them... as aftermarket support is not strong during the early days, many resort to searching for compatible halfcut parts... a few popular rear spring choice were from Mitsubishi SuperTouring, Honda SM4 as well as Mercedes W124... these are plug and play springs but requires some trimming to achieve the correct ride height... many do not realise saga iswara rear springs do share the same dimension with Perodua myvi rear springs... and much to my surprise, myvi rear springs are far stiffer compare to saga iswara oem rear springs, considering myvi is a small hatchback car... credits have to be given to my long-time friend Zaini for the information as well as his sacrificial springs for me to test it... so here we are comparison between HWL spring, saga iswara OEM spring and myvi OEM spring... note that the myvi spring had been trimmed to achieve the same ride height as before...

actually i've trimmed even more than this... total of 2 loops each side.... now the car fender sits flush with the wheels...

the car now handles beautifully on flat corners... noticeable decrease in body roll and much more confidence through the corners... with further tweak on the front camber and toe angle, a balanced handling can be achieve...