Bit of an update on this - I ended up finding a set of Super Low King Springs on an AE110 Toyota Levin at Pick-A-Part last Friday and fitted them on Saturday. The only problem is that they haven't made the car any lower than what it was when I had the Jamex Super Lows installed......
The lack of more of a drop is somewhat frustrating, but the thing that frustrates me the most is that the front left corner is higher than the other three corners by about 10mm. Admittedly I installed the passenger's side front spring upside down originally (writing was facing the right way up and this is the way it was installed at Pick-A-Part so assumed it was correct) but flipped it back the right way on Sunday after discovering that the tighter coils should be up the top. Unfortunately this didn't bring the front left down any lower.
The springs didn't have any markings for left or right on them and I know that spring manufacturers usually make the driver's side slightly higher to accommodate for the driver's weight, so I weighed the two front springs and put the heavier one (30-grams difference) on the driver's side. The rear springs only differed by about 3-grams so I also put the heavier one on the driver's side. The top strut bolts were tightened correctly, only when the vehicle was un-jacked and sitting on level ground, so I don't think it's an installation error as I did everything by the book.
Should I try switching the front springs from left to right to attempt to balance out the front end more? The springs shouldn't need any time to settle as they looked like they've already been used for a couple of years, but maybe the driver's side has sagged a bit, causing the passenger's side to be higher? (perhaps the driver was a fatty
).
On a positive note, the handling has certainly increased compared to what it was like with the Jamex springs installed. They seem to be considerably firmer, but don't make the ride noticeable harsher. Around corners there seems to be less 'float' than what I was previously used to. Plus at only $10 a spring and doing the install myself I had nothing really to lose