ZR-1 Net Registry Forums - View Single Post

WB9MCW · 02-18-2010

the rear end stopped stepping out to the right when I launched

I FOUND THE SAME

I installed C beam plates on my 84 after 85K miles on it. Just looking at the C beam bolt holes it was clear it was moving around because the holes were oblong. I would think the plates assist in applying greater and more consistent clamping force across the interface between the beam and the trans/diff.

YES SOLVES THE DREADED OBLONG HOLE THING

I am not a structural engineer but generally when you beef up bolt to mounting area with a plate, plate will distribute any force/torque over wider area (area of the plate) resulting in reduction of localized flexing. I think the plate would definately make the whole assembly behave more as a single piece resulting in reduced twisting between trans to rear diff under servere torque.

YES SOLID NOW NO MORE FLEX LESS TWIST -- VERY HAPPY USER MYSELF

OUR PRESIDENT RON K IS A BIG PROMOTER OF THESE AS WELL

02-18-2010	#8
WB9MCW Join Date: Dec 2003 Location: McHenry, Il. Posts: 6,584	Re: 'Splain this, Lucy! the rear end stopped stepping out to the right when I launched I FOUND THE SAME I installed C beam plates on my 84 after 85K miles on it. Just looking at the C beam bolt holes it was clear it was moving around because the holes were oblong. I would think the plates assist in applying greater and more consistent clamping force across the interface between the beam and the trans/diff. YES SOLVES THE DREADED OBLONG HOLE THING I am not a structural engineer but generally when you beef up bolt to mounting area with a plate, plate will distribute any force/torque over wider area (area of the plate) resulting in reduction of localized flexing. I think the plate would definately make the whole assembly behave more as a single piece resulting in reduced twisting between trans to rear diff under servere torque. YES SOLID NOW NO MORE FLEX LESS TWIST -- VERY HAPPY USER MYSELF OUR PRESIDENT RON K IS A BIG PROMOTER OF THESE AS WELL