Challenge no 4

[mcl1959]

Here's a new one to try and stump you




Whilst not strictly in the parts book, it came into use on FE and FC vehicles

Ken


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[DJ]

Is it an insert for the inside door lock knob.

[FC427]

Tube insert .....FC427......

[surferboy]

I must be looking at the wrong pictures  ???

Looks like two pics of the head of a black square Phillips head screw  ??? ??? ???

8) 8) 8)

[mcl1959]

I don't know why pics have disappeared.
Try again




Ken

[mcl1959]

And this one




Ken

[Maco]

Is it a Valve Stem seal.

John

[mcl1959]

You're on the right track, tell me why these are used and not on FB or EK for instance ::)

Ken

[FC427]

You're on the right track, tell me why these are used and not on FB or EK for instance ::)

Ken

The early rims had a larger hole

[john253a]

because there on a bench top and not in the car? :P

[zulu]

FE & early FC had the larger valve stem hole in the wheels for tubeless tyres which I believe were
fitted from new

The early tubeless valve stems were wider at the base than the ones we use today

When fitting tubes these doo hickey's were required to centre the valve stem within the larger hole

As the early wheel centres were only riveted to the rims, tubeless tyres were sometimes prone to leaking air
from the rivet holes

Later on the rivets were replaced with spot welds

Up until a few years ago you could still hunt down the wider tubeless valve stems, not sure if they are still available these days
 

[gp]

From memory I'm sure I've seen a bulletin stating that Holden went to tubeless tyres sometime in 1955, during FJ production???

[Dr_Terry]

From memory I'm sure I've seen a bulletin stating that Holden went to tubeless tyres sometime in 1955, during FJ production???

Hi gp.

My service bulletins state Jan 1956 for tubeless tyre intro.

Dr Terry

[mcl1959]

Zulu, I couldn't have said it better. I'm pretty sure the larger tubeless stems are still available. I had them fitted on the 3 tone sedan but that was a little while ago I guess. :'(

Ken

[Stewy]

Picked up a couple from bob janes 2weeks ago  :)

Cheers Stewy   8)