Front Anti Roll Bar Bushes.

[Bravo charlie]

I tried to measure the front anti roll bar with a cheap vernier gauge and l am getting crap readings 20.6 to 21.6. Now l am thinking with readings that l should order the 22mm powerflex bushes. Did vauxhall fit different sizes of roll bars on a 53 reg astra. Any feedback would be helpful.

 

[KevinH]

From EPC, it looks like the Astras were fitted with 3 possible sizes: 18mm, 20mm and 22mm

If you ring your local Vx parts dealer and give them your reg or VIN no, they should be able to confirm which size was fitted to your vehicle.

Hope this may help.

 

[Bravo charlie]

Well l defo know its not 18mm with the crap gauge. I will ring the dealers tomorrow thanks for the input.

 

[HarleyPete]

I know it's not necessarily a perfect way of checking but you could try using a 20mm spanner and see if the open end slides easily over the roll bar or if it won't go on then try a 22mm just a thought. If you have one available apparently a 13/16ths AF spanner is 20.64mm and a 7/8th AF is 22.23mm according to the table on this page, a 7/16th BSF spanner is 18.03mm.

 

[Bravo charlie]

Thanks for the idea pete and l will give it a try tomorrow well if the 20mm open end doesn't go on it must be 22mm.

 

[HarleyPete]

Just an old trick I picked up along the way, lol. Not perfectly accurate but close enough to get the right size given the difference of 2mm.

 

[rushy]

If there the same as the Vec/Signum ones the sizes are molded into the side of the bush, so you can see the correct size by looking at the old bush.

 

[Bravo charlie]

I measured the arb with a 20mm open end spanner and it was a neat fit also l rang the local dealers parts give him the vin number and he said it was a 20mm bush required.

 

[Dave One]

That's no surprise. You probably had 0.5mm or so of muck and corrision around the ARB. Mine was the same. The powerflex bush makes a massive difference on the ARB .