View Full Version : IRS initial alignment
60's Kid
09-24-2018, 08:19 AM
Where can I find how to do the initial alignment on my IRS?
AJT '33
09-24-2018, 08:47 AM
Where can I find how to do the initial alignment on my IRS?
If your talking about the pumpkin then there is nothing to do. Unlike all the other setups the IRS pumpkin is fixed so the alignment is only for the drive shaft to the transmission.
60's Kid
09-24-2018, 09:35 AM
If your talking about the pumpkin then there is nothing to do. Unlike all the other setups the IRS pumpkin is fixed so the alignment is only for the drive shaft to the transmission.
No I was thinking about the control and adjustment arms.
FF33rod
09-24-2018, 01:31 PM
Page 104 of the manual? at least that's the page it's on in my digital copy....
AJT '33
09-26-2018, 07:23 AM
Page 104 of the manual? at least that's the page it's on in my digital copy....
For the alignment specs, agreed, page 104. I have for my car version 2S of the manual.
FF33rod
12-20-2018, 01:10 PM
Thought I'd bump this thread as I was just searching for this topic - initial alignment of the IRS.
So as was pointed out, page 104 has the suggested alignment spec. That's great when you get to an alignment shop or attempt the full blown at home approach. However, what I thought I would see is some lengths measurements on the arms as a starter point. Essentially, the rear equivalent of what the manual gives for the front suspension on page 31. Has anyone seen something similar?
Thanks, Steve
Fixit
12-20-2018, 06:21 PM
I'm building a Roadster with the IRS, so I don't know if anything will translate, but I made a "SWAG" (Scientific Wild Azz Guess) and threaded the various couplers to the middle of the travel and finger tightened the locknuts.
A few weekends ago #9365 became a roller, and sitting on the ground it's a little wonky, but not too bad. (Didn't take a pic from the back...)
99285
Use a level for up and down and string for the front and back. Works for a lot of people, close for some driving.
FF33rod
12-20-2018, 11:01 PM
Use a level for up and down and string for the front and back. Works for a lot of people, close for some driving.
I guess you mean on the face of the wheel/tire. Cool, makes sense, thanks....