GB: DRM Coilovers

[Aurora40]

Here's Mike's pictures.

Hole saw through the Carter bracket:



And expanding that hole until the shock actually fits:

[mgg]

Bob, thanks for posting these pictures. For those of you who have not yet installed the rear coilovers, these pictures are are worth a thousand words. Plan on many hours grinding out these holes to accomodate the top of the shock and bushing. Knowing that this needs to be done will eliminate some frustrating moments. I hope these pictures help and will provide a bit of guide as to what has not been discussed in the coilover installation process. Now, on to the right side grinding and then start on the front.

[WVZR-1]

That's pretty much what I expected to see. I've got some plates and reinforcements that require a similar modification for a non FX3 install and moving the shock forward something near 3/4" to allow clearance for the spring. What is the OD of the springs that were part of this package? My spring set is 87mm or something just short of 3.5".

[mgg]

WVZR-1 My coilovers are the DRM version. They use Hypercoil springs, I just stood the spring up on end and measured in the cent from outside edge to outside edge. The measurement is just a hair more than 3.5". I also think I have met you before. I believe you came down to my house with John Herald. I think it was something to do with my trailer. Stop on by sometime if you would want to take a look. Hope this helps. Doesn't seem to make a difference wether it is FX3 or non FX3. Just saw the weather, snows coming, I am off to grinding.

[tf95ZR1]

Didn't somebody mention a tool/saw/drill that makes the cutting easier?

[mgg]

Goiing to give an update in the rear coilover install. Frustration has now taken over and I need to get away from this. After grinding the left side this morning and getting the schock assembly to fit , Bob was kinda enough to come by and help with the adjustment. Guess what , the schock collar hits the lower control nut that has been reversered and ground down to make more room. If I want the car to sit a slightly lower than stock ride height this wouldn't be a problem. When you turn the collar for the adjustment to lower the height, the bolthead interfers with the collar and will not allow the collar to lower. I am pissed. My solution would be to try and find a washer ( spacer ) to put between the schock and the knuckle shaft to move just a bit. I have 12 threads visible on the sleeve and would like to get the car down to ten or so I think. I would love to know how many threads and visible on Wyde Glyde Jims rear coilovers as that is the ride height I am trying to get. Very very frustrated right now. Anyone who has these and wants to chime in would be appreciated.

[XfireZ51]

IIRC, I am somewhere between 10-11 threads on the sleeve.

[mgg]

XFire, thanks for the info. My guestimate comparing to my other car was about 12. WVZR-1 sent me a great link which describes the problem I am having with the collar nut interfering with the control arm bolt. I am going to have to grind the bolt down even more than I did. Plus, I noticed the the shock bushing on the botton of the shock is not stock. It is the poly bushing and it is MUCH wider than the stock bushing. With a little more grinding and replacing the stock shock bushing with a poly bushing , this should give me enough room to eliminate the interference. Thanks again to all who have helped with this install.

[carter200]

Originally Posted by tf95ZR1

Didn't somebody mention a tool/saw/drill that makes the cutting easier?

Yes, I sent Craig the link to tool to use.......Ask him to forward it to you if you do not mind.

[HAWAIIZR-1]

Originally Posted by mgg

WVZR-1 My coilovers are the DRM version. They use Hypercoil springs, I just stood the spring up on end and measured in the cent from outside edge to outside edge. The measurement is just a hair more than 3.5". I also think I have met you before. I believe you came down to my house with John Herald. I think it was something to do with my trailer. Stop on by sometime if you would want to take a look. Hope this helps. Doesn't seem to make a difference wether it is FX3 or non FX3. Just saw the weather, snows coming, I am off to grinding.

It seems it might make a difference if using FX3 or not because of the top of the shock? Looking at this coilover set up there was no drilling, grinding or modification to the frame at all in the rear.

http://www.smokinvette.com/corvettef...ad.php?t=46262


Here are some notes from Randy at DRM about the install and what is required for their kit:

http://forums.corvetteforum.com/c4-t...tock-sale.html



I even like this set up how the bottom mount is, but I'm clueless right now about this install and just following along as well as seeing what all the other C4 coilovers look like. I also saw another one that does not modify the front swaybar location and just used the Exotic Muscle helm joint link,; but the coil spring did not look as wide as the DRM coil and no FX3 either.