Lots of great info here, thank you James from P-S-T for the enlightenment! I'll be in touch soon
I too have heard about heim joint strut rods causing k member cracking and am curious what the PST rep has to say about this for re-assurance. Also, are the PST rods adjustable after install, unlike the Hotchkis rods? I did have Hotchkis strut rods and liked the firm ride, then a front end guy here in town scared me with cracked k member stories and made me a stock replacement set that I swapped in. I would love to go with the PST rods if they will be good long term on the street over bumpy roads...Here is what I came up with. You have to loosen the bushing end but you don't have to loosen the control rod end. You can get an inch of adjustment either way but, by that point something is probably wrong. They are also 7/8" thick so they are less likely to bend. Haven't installed them yet, and it will probably be a while. Was going to go with the heim joint but I have heard stories of K members cracking.View attachment 99188
Like P-S-T, Horchkiss, Mancini? How do you like them? Any do's or don't's?
Thanks
BIGS
I too have heard about heim joint strut rods causing k member cracking and am curious what the PST rep has to say about this for re-assurance. Also, are the PST rods adjustable after install, unlike the Hotchkis rods? I did have Hotchkis strut rods and liked the firm ride, then a front end guy here in town scared me with cracked k member stories and made me a stock replacement set that I swapped in. I would love to go with the PST rods if they will be good long term on the street over bumpy roads...
My personal background before I came to work for PST was in auto industries mainly in restoration ( body/lead work) and drag racing(pit crew) for the past 10 years. Originally at PST I did customer service and tech, while in the position I never had any issues with customers having issues with k-members fracturing at the mounting point. But being in the restoration business and working on many types of cars with struts rods I would run into cars that would have fracturing at the mounting points but it was normally due to thinning metal (rust) from moisture/dirt sitting between that bushings.
But fracturing could be caused by over adjusting of the adjustable strut rods too. They are only meant from slight caster adjustments as needed (meaning if you have a bent k-member this is not a fix). I am will be installing a set in my mopar pretty soon ( will post pics), and they should be able to adjusted in the car.
Thanks
James
My personal background before I came to work for PST was in auto industries mainly in restoration ( body/lead work) and drag racing(pit crew) for the past 10 years. Originally at PST I did customer service and tech, while in the position I never had any issues with customers having issues with k-members fracturing at the mounting point. But being in the restoration business and working on many types of cars with struts rods I would run into cars that would have fracturing at the mounting points but it was normally due to thinning metal (rust) from moisture/dirt sitting between that bushings.
But fracturing could be caused by over adjusting of the adjustable strut rods too. They are only meant from slight caster adjustments as needed (meaning if you have a bent k-member this is not a fix). I am will be installing a set in my mopar pretty soon ( will post pics), and they should be able to adjusted in the car.
Thanks
James
All I can say is that it's a good thing that the vast majority of these old cars are used very rarely.
How that can be considered an upgrade is ludicrous, and will be doomed to failure, possibly catastrophic, if applied to a daily driver on common roads.
At best it will accelerate lower control arm bushing wear, ball joint wear, reduce braking performance (by eliminating smooth/progressive anti dive), and put higher than designed loads on all the other suspension and chassis components, and for what???
If it were designed for fine adjustment of production tolerances, it would be designed like a tie rod for adjustment (though MUCH beefier).
As it is, it violates two fundamental rules of engineering. #1 - is that something has to be designed to fail as gracefully as possible in the event of failure (stock fulfills that very well), and #2 - If something can't flex, it will break eventually (all the flex is transfered to the lower controll arm bushing, and as load to the heim joint).
It appears to be the answer to a question that no body ever asked, or (to put it another way), a solution to a non problem, (but a non-solution that can fail dramatical and catastrophically)!
All I can say is that it never ceases to amaze me how many ways people can come up with to degrade the performance, and true enjoyment, of these old cars!
I made my own. I wanted them mounted in urethane to dampen road shock/noise? I agree they should not be used to get more caster but to adjust for the "sweet spot" where the LCA bushing doesn't bind.