BD20893, WHICH WAY ROUND??

[Stevemorris]

Hi all,

I have come to the front bumpers...

The previous owner had began the process of aligning the front bumpers, but (sadly for me!) didn't get them finished before I bought the car from him...

I have removed them completely as there was a bit of a mis-match of bolts/washers/rubber pads fitted so I thought best thing to do was remove them and start from scratch.

It is a very well spoken about subject here, and I have found lots of posts around this subject which were all very useful. I have discovered the parts I need are missing, namely BD 20893, Bumper spacer round, and BD20663U Front bumper spacer.

I did find in one of the posts that BD20893 fits at the back of the front bumper, under the sidelight/repeater lamp, and that BD20663U fits at the front mounting point closest to the mouth of the bonnet.

Now I get how BD20663U fits, and why its the shape it is, to fit the contours of the bonnet, but I can't see how BD20893 fits and cannot seem to find any decent images in the posts that shows how?

My bonnet just has holes for all 4 front bumper mounting points, no captive nuts on brackets as I have seen on some?

Any help/advice would be much appreciated!

Thanks, Steve.

[mgcjag]

Have a read here it may help https://forums.jag-lovers.com/t/1961-ja ... all/406462

[Stevemorris]

Thanks Steve, dont know why but I always forget about that forum!

I just knocked up a spacer BD20893, but not sure the dimensions are correct, for reference the centre hole is 3/8".

Does anyone have the dimensions??

Thanks, Steve.

[abowie]

I’ve always assumed that the chamfered round spacer is there to compensate for the long irregularly shaped hole in the bonnet. The spacer goes inside the bonnet and the chamfer goes to the front and it lets you get the bolt axis centred despite width variability in the hole in the bonnet.

The other square, wedge shaped spacer sits against the outside and the wedge compensates for the curve of the bonnet and provides a flat vertical surface for the mount on the bumper to fit against.

Reality often doesn’t reflect theory however, and all you need to do is look at pictures of cars to see that sometimes the system doesn’t work that well.

This is where stacks of washers and rubber spacers come in. Ideally you want to end up with about 6mm space between the top of the bumper blade and the bodywork. You also want to get the over rider back pretty much vertical and get the vertical axis also in the vertical plane so the over rider is neither sitting tilted forwards nor twisted sideways as viewed from the front.

You can spend hours doing this.