Saturday, May 31, 2008

I've found the problem with the center link hitting the gearbox is causing too much restriction on right turns. I tried adjusting the tie rod ends to split the difference, but narrowed the turning radius too much both ways. So, I did some research and found that the '59 and '60 Cadillacs had the longer steering gear of a more modern car, so perhaps the pitman arm from one of those would take care of the trouble. From looking at a '59 at Cooper's, that appears to be true. I will most likely need a '59/60 idler arm as well, so the center link is level. So today I got what was supposed to be a '59 idler arm and it is "S" shaped instead of flat, as the '59 at Cooper's was. I took it home anyway and found the one in my '58 is pretty much flat too (but my pitman is not), so this kind of reinforces my idea that this car had a steering gear replacement with a longer box before. Anyway, the idler I got has to go back. Cooper has some new ones coming next week, along with a '59 pitman arm. These should be FLAT, as all the pictures I've seem of the pitman for '59/60 show them that way. My idler seems to be in good shape anyway, and is definitely not original. A locknut was missing from the top bolt holding the bracket to the frame.

Sunday, May 18, 2008

Installed the power steering hoses and bled the system this afternoon (in 95° heat again). Seems to be good, with no leaks but the one thing I noticed is that with the longer gearbox, turning the wheels all the way to the right causes the center link to touch the end of the gearbox housing. If the pitman arm were just a shade longer, this might not happen. I don't know yet if the contact will impinge turning radius, because the car is blocked in and I can't take it out for a test drive. Even if it impinges it slightly, as long as it won't lead to damage to the center link, I don't think I'll mind. The new box appears to take two full turns of the steering wheel to go from lock to lock, so one turn in each direction from straight ahead. it *was* about five turns from lock to lock before.

Saturday, May 17, 2008

Steering upgrade!

Replaced the steering gear with a quicker unit I bought from Corvette Steering Service at the end of April. This unit was advertised as a "Big piston Medium effort steering box (good road feel) much quicker steering! Full turn box for tight turns." Tom Reina, pres of Corvette Steering had told me that the way the frame was shaped in the '58, a small amount of reworking would need to be done to accept the newer, longer style box. "This box is a little longer in the front end, a couple of inches! [On the] 58 Caddy the steering box fits in a dip in the chassis. The front end of your chassis needs to be pressed in or a grinding out so this box will fit in the saddle." He provided a new rag joint and new hoses designed to fit my existing pump.

In removing the old steering gear box, the pitman arm almost popped off too easily. I'm thinking that arm has been off somewhat recently. Then I noticed that the pressure hose on there was a Aeroquip, not factory. Then when I did a test fit to see where I would need to make any modifications to the chassis, I found I did not need to make any changes at all. The new box bolted right up! The evidence seems to indicate that this car has had a steering gear replacement before, very likely with one that was longer like this one. Either that, or Mr. Reina was wrong about the '58 chassis.

In any case, I've got everything bolted up (all in 95° heat) but need to install the hoses and bleed the system. Ran out of time.