Archived Message
Roller Bearing King Pins
Covering a high mileage means that renewing the king-pins is a frequent task. Some years ago the MGOC announced that they had developed a like-for-like version with Roller Bearings instead of the standard sleeve (oilite) bearings, but being an agnostic as far as the MGOC is concerned I ignored their PR and carried on with the standard factory set-up. I noted wear (side-play) in the current set after only 40K miles, was somewhat annoyed, so decided to swallow my pride and go for the MGOC version.

What a revelation! Obviously fitting and set-up is identical to the standard version, but the steering effort at parking speeds - always heavy on the V8 - is definitely lighter, possibly by 20% to 30%. Even I am impressed!! Interested members can try my car at Silverstone later this month - always assuming I can get the seats rebuilt in time ................
Gordon Hesketh-Jones
11/06/2012 @  19:03
Under topic: V8
Archived Reply(ies) received for this Message
Roller Bearing King Pins
I had thought about these units myself, but there was no wear on the ones fitted to the car when I did the suspension rebuild so re-used what I had. It does amaze me how often some folk get through kingpins, though. Often this complaint comes hand in hand with heavy steering...

As a student I put 85,000 miles on a '79 BGT and there was no more wear to the kingpins than when I bought the car 3 years previously. I often get comments from people that I allow to drive my cars how lovely and light the steering feels for an MGB. The secret is I'm addicted to my grease gun. Regular greasing is paramount to the enjoyment of the car - and by that I mean religiously AT LEAST every 1000 miles. It's a messy job, sure, but it's worth the effort.
Top tips for successful greasing:

1) Lift the car up off the ground with a trolley jack - it makes it MUCH easier to get the grease in.

2)Free up the little ball bearing in the nipple before you go anywhere near it with a grease gun. Just push it in once or twice with a small blunt screwdriver. They can often get stuck in place over time making it impossible to get the grease in to the component.

3) Pump grease in until you see fresh grease come out of the component - not just a little bit of dirty black gunge!

4) It's all in the angle of your dangle! Don't worry if loads of grease comes out around the nipple - you just haven't lined the gun up properly. Experiment with the relationship of the angle of the gun to the nipple - when it becomes much harder to pump the grease you've got your angle spot on. Stay there where you are and keep pumping! When you start to see fresh grease coming through, it should actually start feeling a little easier to pump the handle of the gun.

5) When you've finished pumping, put a blob of excess grease (there will be plenty if you've done the job properly) onto the head of the grease nipple to stop it crusting over with gunge during road-use. Next time you can just wipe this protective barrier away with a cloth and prepare the nipple as mentioned in point 2.
JC Moulds
12/06/2012 @  07:27
Roller Bearing King Pins
First, I was able to compare new "off-the-shelf" king-pins of both types side by side, and the difference in the feel/smoothness of the roller-bearing version was immediately apparent. Next, in the mid-80s to mid 90s when I was covering around 20K miles a year I did do frequent intermediate greasing etc and yes, the kingpins did last longer. However as the years rush by and the age of 80 becomes imminent, the attraction of lying on the garage floor pumping a grease gun palls so the car now has its 3k service at Tim Kelly's, where there is the luxury of an excellent ramp. For people of my age, the roller-bearing version has considerable attraction.
Gordon Hesketh-Jones
13/06/2012 @  17:36
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