Thread: Coil over replacement

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Originally Posted by Mike52

Have you thought about the possibility of the car weighing differently at each corner, requiring a different adjustment. Mike

I would actually be surprised if each corner weighed the exact amount. And yes, that is the cool thing about being able to adjust each spring. What "bugs" me is probably really a spring issue with the springs being the real issue in differences. I just probably want something that is not a reality. LOL.. I expect each spring to carry it's load with a reasonable amount of difference. Say an 1/8" or less difference between any random sample(s).. Not a reality?? We'll see.

Thanks for the heads-up Dave. I'll look them over carefully. I still haven't opened all the boxes! Spent the day with the wife and work e-mails.. She has only given me one real job for tomorrow and I'll need to go to the shop for some tools so we'll see what I can get done!

Bring it over!!!! We'll break out the ramps and the scales and really get the new shocks set up even!!!

Can you tell me what pound springs did you get for the rear coil-overs, 200-250-300?

Thanks,

Mick

Originally Posted by Dave Severson

Bring it over!!!! We'll break out the ramps and the scales and really get the new shocks set up even!!!

Oh you tease you!

If I had a remote chance to pull it off, I'd be there with bells on! Thanks for the offer tho'!!

if you got hypercoil springs then they'd have that much precision and they will maintain their height. Most commercial product springs won't but after the initial seatin they'll be consistant and reliable.
I had bad experience with QA1 when they were HAL, but since then they have gotten thier act together although i still won't buy a set.
Take doc up on his offer and on your way back swing by here and we'll check for the amount of change.

Originally Posted by ojh

if you got hypercoil springs then they'd have that much precision and they will maintain their height. Most commercial product springs won't but after the initial seatin they'll be consistant and reliable.
I had bad experience with QA1 when they were HAL, but since then they have gotten thier act together although i still won't buy a set.
Take doc up on his offer and on your way back swing by here and we'll check for the amount of change.

I've been working part time to get them in and adjusted. Definitely not a bolt in swap! Just enough differences between the old & new to confound my simple brain..

I got it back on the floor tonite and the rear is to low yet the shock length is a bit long so I'll need to reset the adjustments to raise the car yet shorten the shock. The fronts have been a piece of cake.

I'd love to swing over to see Dave S. and yourself! Won't be this year tho'! Thanks for the offer!

Oh, Randy.. The pics are coming.. relax I didn't forget ya!

Originally Posted by ojh

if you got hypercoil springs then they'd have that much precision and they will maintain their height. Most commercial product springs won't but after the initial seatin they'll be consistant and reliable.
I had bad experience with QA1 when they were HAL, but since then they have gotten thier act together although i still won't buy a set.
Take doc up on his offer and on your way back swing by here and we'll check for the amount of change.

Tru Coil is another good brand. We used to run them on our late model, wasn't unusual to use them an entire season and still be + or - 5%. QA-1's test all over the place right out of the box, then get worse after they've been used awhile. AFCO is getting their consistency dialed in a bit better, too. You pay a bit more, but when the spring sez 150 lbs, that's what you get and it will stay there!!!

Originally Posted by lurker mick

Can you tell me what pound springs did you get for the rear coil-overs, 200-250-300? Thanks, Mick

Yes I can, but I'll have to get the info and it's back at the shop... CRS... 8-) Next day or two ok?

Originally Posted by 34_40

Yes I can, but I'll have to get the info and it's back at the shop... CRS... 8-) Next day or two ok?

These are the QA1 part numbers and springs rates. # 721395 with a 500lb rate on the spring for the front and # 721485 with a 300lb spring for the rear. Hope this helps.

It does.

much appreciated.

Thanks

Mick

Originally Posted by 34_40

T. # 721395 with a 500lb rate on the sp ring for the front

Mike
WOW!!!! That's stiff compared to mine and well beyond the AFCO charts which say 300-350s. I hope your vendor is right!!!!

I just bought some Bilsteins from RCD and they highly recommend a spring rate of 225lbs.,,, that what I went with on My coilovers.

Originally Posted by IC2

Mike
WOW!!!! That's stiff compared to mine and well beyond the AFCO charts which say 300-350s. I hope your vendor is right!!!!

The funny thing is.. it's the same vendor! Afco! He says he'll stand behind them if I find them to stiff and swap'em to a "lighter" rate spring no hassle! Oh, did you know who owns AFCO? I just found out it's Speedway!

Originally Posted by 1bad32

I just bought some Bilsteins from RCD and they highly recommend a spring rate of 225lbs.,,, that what I went with on My coilovers.

And that's why I started this thread. A lot of numbers and info gets thrown around. Maybe we can all learn a thing or two and yes, this is my first coil over car.

Sometimes when we start putting springs on the tester it gets to be a real laugher at what the springs test out at vs. what they are actually rated at... Out of the box I've seen them off by as much as 40 lbs!!! As for the rating suggested for a particular car, remember that it also has a lot to do with front to rear weight and the angle the unit is mounted at. Looking at just the total weight of the car and picking a spring based on that can lead to errors in the spring rate. Whenever possible, I put the car on the scales and check the weight front to rear and side to side. Depends a lot on where components are placed as to how the weight is distributed on the four wheels... Good thing is that all the reputable vendors will exchange the coil over springs for a different rate as long as they haven't been beat up too bad during the install.

Now if I ever come up with an extra $6k for a shock dyno I can really waste a lot of time playing around with the stuff everyone else takes for granted!!!!!