Oh yeah, MVP is located in Portland, Oregon. their phone number is 1-503-892-9405. Someone that lives near them should go over there and see whats up. Find out who machined these for them and whether we can get them made again (a Supra specific version maybe). I'd do it but I'm on the other side of the country and I know there a lot of PacNW peeps on here.
Coilover stuff....
A few things that have come up while working on the rear setup. I found that by positioning the lower shock mount about an inch back, and maybe about 1/2" outboard, I gain tons more clearance for the spring, sleeves,and collars. This will allow the spring to sit lower on the shock, and increase travel. This poses a few issues though. The first being that it will alter the "working lever length" of the suspension arm. This means the force applied by the spring will be placed on a farther point than the stock is, and spring rate will need to be altered. Also, I'm worried about the stock shock mount, and the trailing arm itself, being strong enough to hold up the amount of continuous force that the coilover setup will be putting on the end of the arm. Being that the original spring sits closer into the subframe, and it sits on a fairly beef section of the arm, it's very well supported.
To solve this issue, I have a tentative design to build a support for the underside of the trailing arm. Think of it as an exo-skeleton of sorts for the arm. It will bolt to the underside of the trailing arm, and will extend past the stock shock mount, repositioning the shock as stated above. From the bottom of the support plate, another triangulated support will extend rearward, and meet at the bottom of the new shock mount, offering even more strength. This piece will stiffen the trailing arm, allowing it to resist flex and bending in the center, and play a dual role by placing the shock where it will work the most efficiently. This piece will be part of the rear coilover kit, and may be offered separately. This is pretty much the only way a rear coilover like this will be safe, short of making a new trailing arm from scratch. I could do that, but it definitely won't be cheap.
I also have been thinking about offering a three point rear shock tower bar for use with the coilover setup. It will mount to the shock tops of course, and the lower bars will meet at the center of the trunk floor, between the shock towers. This will help strengthen the shock towers, and absorb some of the upward force from the springs.
To solve this issue, I have a tentative design to build a support for the underside of the trailing arm. Think of it as an exo-skeleton of sorts for the arm. It will bolt to the underside of the trailing arm, and will extend past the stock shock mount, repositioning the shock as stated above. From the bottom of the support plate, another triangulated support will extend rearward, and meet at the bottom of the new shock mount, offering even more strength. This piece will stiffen the trailing arm, allowing it to resist flex and bending in the center, and play a dual role by placing the shock where it will work the most efficiently. This piece will be part of the rear coilover kit, and may be offered separately. This is pretty much the only way a rear coilover like this will be safe, short of making a new trailing arm from scratch. I could do that, but it definitely won't be cheap.
I also have been thinking about offering a three point rear shock tower bar for use with the coilover setup. It will mount to the shock tops of course, and the lower bars will meet at the center of the trunk floor, between the shock towers. This will help strengthen the shock towers, and absorb some of the upward force from the springs.
21 - 32 of 32 Posts
have you actually taken measurements to see if they fit?
this is the exact thing i am trying to do, but our setup is a little differnt.
first, we have much larger diameter springs, so getting smaller diameter
coilover springs may not sit on the control arm unless some kind of lower
perch is welded in place
second, our bump stop comes very far down on to top mounting point of the spring, and it would look like a very short spring would be needed if any drop is desired.
still the easiest and safest method to try. i am going to try some stuff on
my parts car with a prelude kit.
this is the exact thing i am trying to do, but our setup is a little differnt.
first, we have much larger diameter springs, so getting smaller diameter
coilover springs may not sit on the control arm unless some kind of lower
perch is welded in place
second, our bump stop comes very far down on to top mounting point of the spring, and it would look like a very short spring would be needed if any drop is desired.
still the easiest and safest method to try. i am going to try some stuff on
my parts car with a prelude kit.
Making an adjustable perch for the std springs is interesting and certainly has advantages over the coilover shock, but the size of the collar and thread needed makes it difficult/expensive due to the spring ID.
I'd be happier probably reinforcing the upper shock mount, making a decent 3 point strut bar and doing it that way, but it my have to wait till after the car is engineered. I'll probably do the fronts then as well. The main reason for doing it this way is the shocks already have the platforms on them :lol:
Any feedback from the Celica GTS conversion with the issue of the body structure ? Anyone ?
I'd be happier probably reinforcing the upper shock mount, making a decent 3 point strut bar and doing it that way, but it my have to wait till after the car is engineered. I'll probably do the fronts then as well. The main reason for doing it this way is the shocks already have the platforms on them :lol:
Any feedback from the Celica GTS conversion with the issue of the body structure ? Anyone ?
Instead of getting these rear height adjusters made specifically for our application why not get an existing adjuster with a spring that coils down to a smaller size like this.
http://www.c3cars.com/CFJFiles/C3Cars/9214.jpg
Or get a perch like this and look for a spring to match.
Look under the coil over section, bottom of the page.
http://www.hrsprings.com/site/frameproducts.html
This is just a thought, I just want some advice and to press on with our progress in having some chamber adjustments so I can stop eating tires.
http://www.c3cars.com/CFJFiles/C3Cars/9214.jpg
Or get a perch like this and look for a spring to match.
Look under the coil over section, bottom of the page.
http://www.hrsprings.com/site/frameproducts.html
This is just a thought, I just want some advice and to press on with our progress in having some chamber adjustments so I can stop eating tires.
Well the MVP adjustable perch is for a full size spring the same size (or nearly) as ours. So it's already been engineered and built. They made versions for 200s and 7/900s, I had measured these awhile back but don't know the measurements offhand. I do remember they were /should be compatible with our spring diameter. I'd like to have rear height adjustment but otherwise I'd go for some kind of spacer to restore ride height.bbaacchhyy said:Making an adjustable perch for the std springs is interesting and certainly has advantages over the coilover shock, but the size of the collar and thread needed makes it difficult/expensive due to the spring ID.
If that is the case, it will be pretty easy to make up a small collar to make up the difference.white_mk_2 said:Well the MVP adjustable perch is for a full size spring the same size (or nearly) as ours. So it's already been engineered and built. They made versions for 200s and 7/900s, I had measured these awhile back but don't know the measurements offhand. I do remember they were /should be compatible with our spring diameter. I'd like to have rear height adjustment but otherwise I'd go for some kind of spacer to restore ride height.
Can anyone contact MVP from that side over there ?
I'd be keen to hear a price/availability/details for sure
Cheers
Michael B
well, what springs would we use with this larger
diameter lower collar?
i wanted to do this for cheap, but it looks like a
$180 dollar order of whatever spring rate we
want will get the job done.
i guess we can put that lower collar on the
stock or eibach or st springs, that would
not allow for further lowering of the car.
i want to be able to go from just above stock, to quite a bit lower
lower for autocross, higher for drag racing and street
diameter lower collar?
i wanted to do this for cheap, but it looks like a
$180 dollar order of whatever spring rate we
want will get the job done.
i guess we can put that lower collar on the
stock or eibach or st springs, that would
not allow for further lowering of the car.
i want to be able to go from just above stock, to quite a bit lower
lower for autocross, higher for drag racing and street
Well the beauty of it is you just use whatever springs you have nowksourounis said:well, what springs would we use with this larger
diameter lower collar?
Just any stock or aftermarket spring. If you want to go lower then just cut the spring down a coil, this would increase the springrate as well and allow you to raise the car back up. I must say though with the ST springs I definitely wouldn't want to go any lower, I actually want to raise the rear a hair.So is that what these collars cost for a pair ? USD $180 ? Does that include the springs, or is it just a pair of threaded collars plus the locking rings ?ksourounis said:but it looks like a
$180 dollar order of whatever spring rate we
want will get the job done.
Material is ?
Cheers
Michael B
from the tunermotorsports site, it looks like its just the adjusting sleeve
in which case we would need another 100 or so for springs
in which case we would need another 100 or so for springs
What is the web address/link so that I can have a perve please ?
re:
I hate to bring another old thread back from the dead, but I've been thinking about these rear height adjusters lately, and was wondering if anybody here has actually done it (ksourounis or white_mk_2)?
Sonny
I hate to bring another old thread back from the dead, but I've been thinking about these rear height adjusters lately, and was wondering if anybody here has actually done it (ksourounis or white_mk_2)?
Sonny
21 - 32 of 32 Posts
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