Hi Guest!
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
RJS
Jedi Warrior
Offline
HI there
Posting in case this is useful to anyone. 99% of the time, I drive my car on back country roads at under 50 mph. But, on the parkway over that speed there was a quite obvious vibration throughout the car which would make driving it over 55mph unpleasant and slightly un-nerving. Well, last fall I finally decided to address it. I did three things which appear to have substantially improved it to the point where it is nearly as smooth as driving a modern car at speed.
1. Last fall I removed, disassembled, cleaned and rebuilt my driveshaft. New u-joints. Upon removal, I discovered the driveshaft had been assembled "out of phase" by a prior "British car mechanic" when he replaced a failed u-joint back in 2006. Obviously, I remedied that problem straight away
2. I have 60 spoke wire wheels. I measured radial and axial runout on the wheels. All four wheels are within spec but, I mounted the best ones on the front
3. Balanced wheels using my HF static bubble balance - despite wheels being computer balanced when tires mounted. I found (3) wheels took 1.5oz and (1) took 1.25oz.
I don't know which of the above made the biggest difference but, I am sure they all contributed. Now I can get on the parkway and cruise at 80mph all day.
Bob
Posting in case this is useful to anyone. 99% of the time, I drive my car on back country roads at under 50 mph. But, on the parkway over that speed there was a quite obvious vibration throughout the car which would make driving it over 55mph unpleasant and slightly un-nerving. Well, last fall I finally decided to address it. I did three things which appear to have substantially improved it to the point where it is nearly as smooth as driving a modern car at speed.
1. Last fall I removed, disassembled, cleaned and rebuilt my driveshaft. New u-joints. Upon removal, I discovered the driveshaft had been assembled "out of phase" by a prior "British car mechanic" when he replaced a failed u-joint back in 2006. Obviously, I remedied that problem straight away
2. I have 60 spoke wire wheels. I measured radial and axial runout on the wheels. All four wheels are within spec but, I mounted the best ones on the front
3. Balanced wheels using my HF static bubble balance - despite wheels being computer balanced when tires mounted. I found (3) wheels took 1.5oz and (1) took 1.25oz.
I don't know which of the above made the biggest difference but, I am sure they all contributed. Now I can get on the parkway and cruise at 80mph all day.
Bob
