Which type of adjustable height Coilover do you prefer?

[DivineStrike]

It seems most C/O systems adjust height by using threads to compress or decompress the spring. While this is a more simple and cheaper solution, why are there not more options having the strut body threaded to where the spring tension remains the same?

My preference is to have the strut body threaded, that way spring travel and load is not effected.

Traditional Coilover (Most coilovers which are inexpensive)

Fully threaded option

I assume most will like the fully threaded option but I'm more creating this thread to discuss the pro's and cons of each...to include how cost is calculated into your purchase. How much more would you be willing to pay for a fully threaded option vs traditional?

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[jbailer]

Fully threaded as long as there is room. I don't like the fact that you have to compress the spring to change the ride height on traditional.

 

[dwaleke]

Fully threaded, but no one but BC has that design that I have seen. And the valving on those (at least with other platforms) is not very good.

 

[dubster99]

Threaded is the only way to go.

 

[dragonacc]

I also prefer an actual coilover in the rear instead of a threaded spring perch. Only seen a couple companies offering those on our car so far.

 

[DivineStrike]

Fully threaded, but no one but BC has that design that I have seen. And the valving on those (at least with other platforms) is not very good.

Looks to me like they have a traditional style, unless it is a hybrid where you can adjust height both ways.

 

[Anthony@HTM]

Fully threaded or GTFO

This is one reason why I have never bought KWs or H&R

 

[dwaleke]

Looks to me like they have a traditional style, unless it is a hybrid where you can adjust height both ways.

I haven't seen an actual picture of the bc ones for this platform. There is one pic of what looks like a rear coil over but the top mount is not right so it can't be for the s550.

The bottom usually threads separately for height compared to the top thread section which is used to set proper preload on the spring.

 

[jayman33]

I haven't seen an actual picture of the bc ones for this platform. There is one pic of what looks like a rear coil over but the top mount is not right so it can't be for the s550.

The bottom usually threads separately for height compared to the top thread section which is used to set proper preload on the spring.

Same thing as the roush kits, shock with separate spring and adjustable perch.

 

[dontlifttoshift]

I don't think a lot of people actually read the post or looked at the pictures.

In the second picture, when the shock body moves down relative to the spindle mount, what keeps it from hitting the control arm?

I have to admit, I have never seen a coilover strut replacement that looked like your second picture. Do you have a link to someone that manufactures one like that?

 

[Schu]

Fully threaded... anything less is a bit of a compromise.

FYI OP, the idea is not that it keeps the spring compressed when loose... they have helper springs for that if it is a personal requirement. it's so there is a wider range of adjustment on corner weighting and a wider choice of spring lengths available to you as a user so you can fully take advantage of the dampers stroke.

side benefit is spring preloading as well.

 

[byklin]

wait so are the BC coils fully threaded?

 

[908ssp]

Fully threaded allow you to retain all your suspension travel. The spring perch adjustable you loose compression range as you drop the ride height.

 

[Jack Hidley]

Raising or lowering the lower perch on a strut does not affect how much the spring is compressed. The springs loaded height is a function of the sprung weight on that corner of the car, the springs free length, the springs rate and the motion ratio of the installation.

If the motion ratio is 1:1 and you raise or lower the lower spring perch, the ride height of the car is going to change exactly 1" also.

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