awesome
sounds like a plan batman
The setup was done with the rear seats in and I didn't change it as the lower seat squab only weighed 5-6kgs anyway and the battery was very close at 4.8kgs with box and wiring. The rear upright section has always been in the car as it helped the car feel a little less "flexy" in the rear. Cage will now fix that! Any small amount of extra rake was welcomed for handling. The only thing really different would be the battery with the stock unit weighing 12kg+ and all hanging out the front of the axle line like its sitting on a lever!!!
The car will be basically different, but my advice get them in the car as is, drive it for a few km's to settle them and then sort the heights from there. First check the front passenger side against the front drivers as this is likely to be the biggest difference. The rears should be even but you might need extra clearance for the 18's so check heights. Really any adjustments should be very small. IMHO, I would not pay $450 to have someone else do it as its really really easy. You just measure from the centre of the hub to the bottom of the guard.
So hot tips:
Check fronts side to side first.
Once the front is done, sitting down drive it back and forth to settle it and steering lock to lock. Then measure again to make sure they match side to side. Fronts have the most variables so do this first and take your time.
When setting the rears, give the car 5 to 8 degrees of forward rake (front down) for handling.
As the springs are not linear rate, there will be a certain amount "give in them and you might be able to do a fit and forget, but once installed settle them in and then measure and adjust.
Last edited by gman; 16th March 2012 at 04:44 PM.
Epsilon Renntech
2003 Astra SRi-T - The Phantom
EMTRON ECU
Borg Warner EFR7163 & EFR9180
Tuned by Scott @ Insight Motorsports
awesome
sounds like a plan batman
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I installed them and measured them at home. Took me a day, but even when it was checked by the race aligner for the first track day, he said it was as near spot on as made no difference. For road coilovers with progressive rate springs they all do exactly the same thing as corner weighting with progressives is not really that huge an advantage due to the non-linear nature of the springs. The only thing they did was give it a bit more rake and raise the front drivers side 1mm to allow for the 100kgs in the drivers seat!!
So as they are progressive rate springs, the corner weightings are pretty useless as the spring absorbs the extra lift at a non-linear rate that you dial in and you end up with a case of diminishing returns and no real advantage. The other thing is if you load one spring more than another it will reach the limit of the different compression ratio's and stiffen up sooner than the other side and this creates all sorts of other issues as well.
Again on his advice, for a predominately road car with progressive rate springs was to run them evenly side to side which is a simple case of measurements centre of the hub to the bottom of the guard.
The new linear rate springs in the new suspension means that there is a set amount of drop on the car which is easily measured and accounted for. Progressives don't allow that sort of precision.
Last edited by gman; 16th March 2012 at 04:59 PM.
Epsilon Renntech
2003 Astra SRi-T - The Phantom
EMTRON ECU
Borg Warner EFR7163 & EFR9180
Tuned by Scott @ Insight Motorsports
Sure, we dont have to worry about viking raids or scurvy anymore, but instead we make a daily routine of sitting in flimsy, fibreglass (or metal) boxes full of gasoline which are propelled in opposing directions on the freeway at velocities matching that of low flying aircraft.
This is a roundabout way of saying that cars are dangerous....
In other news... Dandenong spec'd the Astra for the lolz
And found this wedged between the wheel and the hubcap
Yes, that was a dead mouse...
Last edited by hazrd; 16th March 2012 at 05:32 PM.
Sure, we dont have to worry about viking raids or scurvy anymore, but instead we make a daily routine of sitting in flimsy, fibreglass (or metal) boxes full of gasoline which are propelled in opposing directions on the freeway at velocities matching that of low flying aircraft.
This is a roundabout way of saying that cars are dangerous....
replaced my ignition coil with my back up aftermarket one
Blue Holden Astra TS City 2003 1.8 Sedan Manual Z18xe 135, 500 km @ 16 March 2013
I finally found my exhaust leak!! I located 3 broken studs on the exhaust ports so I pulled off extractors and replaced all studs with new anodized ones. Now it doesn't sound like a wet fart everytime the engine is cold! I could only hear the leak when the motor was cold as nothing had expanded. Very pleased
CORSA C SRI 103KW
Fitted 3" ceramic coated catted dump pipe goes alright!
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