Is the price quoted for two or four springs? I am sure there are chassis manufacturers that could quote and supply what you need in the big smoke if you have the details of spring dimensions. Google Caravan springs or check the phone book.Caravan dealers are always expensive.I would expect in excess of $100 per spring would be a fair price.
If you are talking about coramal own designed suspension system which is leaf springs with fabricated arm instead of an axle. Then be sure you are replacing the spring with the same leaf spring specifications especially if it is a tandum set up.
If it were me I would buy from the maker. Not worth the $100 or so to get it wrong.
Find somebody with Coromal. Measure the leaves. Length. (of both longest leaf, eye centre to eye centre. and also the mounting spaces, between where the ends of the leaves mount on chassis.
Dia. and thickness of leaves.. and number of leaves. Incl the bottom short one.
Then go see a spring mfg, agent. with length of van, weight of van Tare and max allowed weights.
I have 535 Tandem but can't get under at moment. Can't even drive yet.
But my weights are 1.43t empty 1.87t loaded on the 4 springs.
A decent mfg Could almost do that on single leaves. With a load bearer leaf under for max.
Decent steel, they are the best Going that way. I'd also see about getting mounting plates on chassis, and bottom of rocker. For 4 shockers to suit. That'd really smooth out your ride for another$500.(250 single axle)
But springs to suit shouldn't cost much more than Maybe $100 a pr.
Single axle a bit more. (Stronger springs.)
Pins\bushes extra..
If the leaves are flattened. check the pins in the rocker arms from centre of van to where hubs are. There are a few. and they wear too.
Mine is a '99 model with lots of red dust in it, SO it's done a lot of corrugations. But springs still fine. Not 100% but I'd say. around 87 or so. Suprising.
-- Edited by macka17 on Friday 3rd of March 2017 11:56:17 PM
Like I said.
Reset \Retempering) the steel won't make it last much longer
if the material is inferior.
Just fooling yourself.
Save yourself grief later down the track, and buy some EFS or similar now.
and be happy ever after.
The best smithy in the world can only do so much with what he's given.
$220\250 would be about right most places
for a pr of reasonable quality springs for single axle.
Supercheap etc tend to carry a good range of trlr springs?.