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240racer · 03-22-2003, 10:39 AM

how much travel is available from the JIC's? You said that you have 3-4" of travel in the front, does this mean that when you set the car down, there is 3-4" left in the travel? This would tell me that you have about 6" of total travel available. Is this the same for both front and rear? Do you know the exact amount of total travel available? If you have the same amount of travel available front and rear, then you should adjust the suspension so you have the same amount of sag on all four shocks. Sag is easily adjusted with preload, and that's why you have adjustable preload. Of course you can also adjust sag with spring rate, since a stiffer spring of the same extended length will sag less with the same amount of static load. If you are getting a lot more sag on the rear then the front, and you would like to reduce that, I would use the preload adjusters to do that. It is very hard for spring makers to make springs that are excatly the same length everytime, which is why adjustable spring perches are so nice, we can take into account the difference in free length with them. Also, your front springs are obviously different then your rear springs, so there is no reason I can think of that the spring perches (preload) should be adjusted to the same position.

03-22-2003, 10:39 AM	#7
240racer Zilvia Junkie Join Date: Nov 2001 Location: Minneapolis, MN Age: 42 Posts: 574 Trader Rating: (0)	how much travel is available from the JIC's? You said that you have 3-4" of travel in the front, does this mean that when you set the car down, there is 3-4" left in the travel? This would tell me that you have about 6" of total travel available. Is this the same for both front and rear? Do you know the exact amount of total travel available? If you have the same amount of travel available front and rear, then you should adjust the suspension so you have the same amount of sag on all four shocks. Sag is easily adjusted with preload, and that's why you have adjustable preload. Of course you can also adjust sag with spring rate, since a stiffer spring of the same extended length will sag less with the same amount of static load. If you are getting a lot more sag on the rear then the front, and you would like to reduce that, I would use the preload adjusters to do that. It is very hard for spring makers to make springs that are excatly the same length everytime, which is why adjustable spring perches are so nice, we can take into account the difference in free length with them. Also, your front springs are obviously different then your rear springs, so there is no reason I can think of that the spring perches (preload) should be adjusted to the same position. __________________ Adam '89 coupe KA24DE+T 14.1 @ 104 MPH '88 Celica All-Trac turbo stock, but no more ecu codes!!