The latest project was replacing the front tie-rods + added a knock bushing to the steering rack. My original plan was to do this work when I replaced the steering rack with a new rack I bought a little while back.
Installing the new rack is dependent on the Quaife
short rack kit, though, which won't be finished until June or July at the earliest.
I ended doing this work now for 2 reasons:
1) The rear toe links necessitate an alignment anyway, might as well do that with new tie-rods up front, eh?
2) The car has the normal rack knock plus a steering wheel shake at 60-70mph. @
Chris_Lum on instagram said he was able to solve his steering wheel shake with a knock bushing. I thought I'd give it a try.
He also said the knock bushing increased the steering effort by ~15% or 20%. I was curious what that felt like. The Quaife short rack will properly increase the effort by 20%, so maybe this'd be a good test. Would the bushing wear in? Any other adverse side effects? I'm planning on putting a knock bushing on the new rack to slow the wear, all around trying he bushing in the old rack felt like a good test.
I replaced everything tie-rod-related from the rack to the knuckle: inner tie-rods, outers, boots, washers, etc. I thought I took a pic of the new parts before putting them on the car, but I guess I spaced. Here are the empty bags, tho!
Begin! This project was pretty gooey, I took a lot fewer pics that I would have liked. First step, break the tie-rod ball joints loose. Before:
In my past car life, I'd always use one of those ball joint forks. You know, jam it between the joint and the suspension piece, then smack it with a hammer. It sucked every time, and I'd always tear the boot. Never again, I got the proper ball joint tool. Feels good man.
Then in use. Took like 30 seconds and no damage!
Sweet. Peel off the straps on the boots to reveal the inner tie rod and end of the rack. This is the passenger side:
The next step was the hardest part of the whole job. Among the goo in the last pic, there is a washer folded over the inner tie-rod's mounting location. You need to unfold it in order to get a 17mm end wrench on there. The washer was much thicker than I expected and it was a total pain to unfold. Also it's folded over in 2 spots, one of them basically up against the body. After much contorting with a fat+sharp flathead screwdriver, I got them unfolded.
I broke the inner tie-rods loose with a full size 17mm end wrench, then unscrewed them with a shorty. Note that on each side all of this was a lot easier at full lock so the rack was out as far as possible.
Out! They seemed to be in reasonable shape, but I want that new car feel.
And the rack looks like this. This is again the passenger / problematic side of the rack:
The knock bush. This one is
from joe@cycleterminal. His are a lot cheaper ($55) than the Australian dude's bushing. I'll be getting another one for the new rack. It comes lubed up with Honda steering rack grease.
Then installed. I had to massage down a high spot with a tiny file on the end of the rack to get the bushing to nicely slide over. The high spot was right in the corner of where the end of the rack was cut down for the wrench. I've seen a couple videos of these where people just force them over a high spot and it stresses me out. It's possible to score the bushing when it's going on, and at full lock when it hits that high spot again.
At this point I let the very small amount of loctite holding compound dry for probably 30 mins. Then the plan was to make sure it's well lubed and could run the whole range no issue. Seems like some people don't lube the bushing, it is oil-impregnated bronze after all, but after some reading these types of bushings are heavily lubed in industrial applications, especially when used in a linear slide (like a steering rack!). After more reading about grease types, it seemed like anything was fine. There were a few reports of Moly greases being not ideal as the solids can clog up in the bushing.
I settled on the Honda steering rack grease (old pn: 08733-B070E, new pn: 08C35-B0534L) as it's what was recommended for the inner joints and was probably already in there--the new rack's grease looks really similar. This stuff was kind of hard to find, and was unclear exactly what was in it. The label says "mineral oil with a lithium-type soap" if you were curious.
Ok lubed up. I did a couple passes of this: lube it, spin the steering wheel 360 from center each way a few times, full lock, wipe off the shaft, repeat. One final lube and it was ready for prime time.
Back together! Those dumb bent washers were a pain, but I got them bent.
Alignment
Next step was to sort of align it. The manual has you measure 11mm from the jam nut to the little step in the shaft. It's unclear exactly where on the step they want you to measure, so I picked the smaller edge. Here I am adjusting:
My old tie-rods were in totally different lengths left to right. I wanted the rack to be centered, so I started from scratch. Then the cycle was adjust, check on the toe plates, repeat. Here's a pic of the plates on the rears, but the front was the same vibe.
Adjusting the toe took me like 4 passes to get right: measure toe, nope, up in the air, adjust, measure, back down, roll the car, measure toe... Tiny adjustments make huge changes. After many adjustments, I calculated the rate to be about 3mm total change at the wheels for a 1mm total change at the tie-rods. I ended up with the nut-to-step measurements a hair over 10.5mm on each tie-rod for ~1/16" toe out.
I went for a short drive around the neighborhood and the steering wheel was waay off lol
I moved it over 2 splines (!!) and now it's proper centered.
Results
Sooo, is it better? OMG YES.
The first drive out with the new tie-rods was also the maiden voyage for a whole bunch of other changes: new rear toe links, less rear toe in, front toe out, aaand new front hubs, front wheel bearings, and studs.
The car feels great, a whole lot more solid and precise overall. The best part is...no more steering wheel shake! My old front wheel bearings and tie-rods weren't that bad, so I will attribute it mostly to the knock bushing.
Is there more effort in steering? Not for me. I had seen reports of the bushings 'breaking in' after a few hundred miles. In a few hundred miles, how much do you really exercise the rack? My goal in lubing and spinning the steering wheel with the car in the air was to simulate those couple hundred miles while keeping everything nice and juicy.
Wheel bearing posts coming soon. I still cant break the axle nuts on the rears, though, despite a growing collection of ever more comically large tools. So I may be taking it somewhere. I'll leave you with a pic of a 5 foot cheater on a 3/4 drive breaker bar. Even after basically jumping on this thing it wouldn't budge.