The 75 and ZT Owners Club Forums - Brakes - bleed nipple sizes? (again)

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Brakes - bleed nipple sizes? (again)

What sizes are the front and rear bleed nipples?

I want to put some 'speed bleed' valves on (like these) but I don't know what sizes to get.

The standard MGR ones are here but it doesn't say what size they are:
https://rimmerbros.com/Item--i-SMG100070
https://rimmerbros.com/Item--i-SMG100060

Quote:

Originally Posted by Blink (Post 2774658)

Anyone? :shrug:

HERE you go.

Use the search above, you will likely get your answer quicker ;)

Quote:

Originally Posted by clf (Post 2774668)

HERE you go.

Use the search above, you will likely get your answer quicker ;)

1st link says M8 x 1.25mm pitch for a ZT. I've got a 75 and no idea if it's the same, or whether front & rear are the same size.

I already used the search & didn't find a definitive answer for both ends.

Quote:

Originally Posted by Blink (Post 2774842)

...... or whether front & rear are the same size.

Apparently not.

https://www.the75andztclub.co.uk/for...8be3035e9d.jpg

Quote:

Originally Posted by Blink (Post 2774843)

Apparently not.

https://www.the75andztclub.co.uk/for...8be3035e9d.jpg

I honestly cannot remember now that you say that. Rears were different on mine, but then I was doing a 190 modification. The ZT and 75s will be the same, the 190 brake setup may yield a difference though, I cannot remember.

Checked through my purchase history, here are the set that I bought.

https://www.ebay.co.uk/itm/ROVER-75-...72.m2749.l2649

or titanium if you are feeling flush

https://www.ebay.co.uk/itm/Rover-75-...kAAOSw35hccBVB

Quote:

Originally Posted by clf (Post 2774844)

Blimey, I didn't know you could get them in Titanium. :eek:

The 1st link above (non Titanium) is similar to the set I bought. They're both from the seller 'Brakesint' but yours is kit NIP2021O and mine is NIP2012L (shown in my pic). I wonder what the difference is.

https://www.the75andztclub.co.uk/for...9255534a50.jpg

The sizes given are the same in each kit though. The larger of the two valves is the rear, and presumably the smaller one fits the front, although I haven't tried them yet because I can't get the front wheels off at the moment.

So assuming the smaller one fits the front calipers, the rear size is M8 x 1.25mm and the front is M7 x 1.0mm. 9mm spanner for the rear, 7mm for the front.

Looks like Merlin have got both sizes in ABVs (Goodridge Speed Bleeder) - https://www.merlinmotorsport.co.uk/p...ed-nipple-g-bn (see dropdown).

Just to really confuse things - Brakesint website (link) says there are two options for the rear caliper nipples on my 75.

a) Solid discs - use nipple BBN40 M7 x 1
b) Vented discs - use nipple BBN82 M8 x 1.25

My car has solid discs on the rear, so the M7 x 1 nipple should fit the rear caliper. It doesn't - I've tried it and the diameter is too small. The M8 x 1.25 does fit the rear caliper.

Then for the front caliper nipples it says to use BBN82 M8 x 1.25.

So they've got the solid rear ones wrong. :eek: They might have the front ones wrong too - I don't know yet.

Quote:

Originally Posted by Blink (Post 2774867)

Blimey, I didn't know you could get them in Titanium. :eek: You can get stainless too.

The 1st link above (non Titanium) is similar to the set I bought. They're both from the seller 'Brakesint' but yours is kit NIP2021O and mine is NIP2012L (shown in my pic). I wonder what the difference is.

I think they are internal number, or perhaps the materials theyre made from?:shrug:
At the end of the day, dont worry about the part numbers. They are the same.

https://www.the75andztclub.co.uk/for...9255534a50.jpg

The sizes given are the same in each kit though. The larger of the two valves is the rear, and presumably the smaller one fits the front, although I haven't tried them yet because I can't get the front wheels off at the moment.

So assuming the smaller one fits the front calipers, the rear size is M8 x 1.25mm and the front is M7 x 1.0mm. 9mm spanner for the rear, 7mm for the front.

Looks like Merlin have got both sizes in ABVs (Goodridge Speed Bleeder) - https://www.merlinmotorsport.co.uk/p...ed-nipple-g-bn (see dropdown).

I cannot remember which goes on where. I had actually forgotten what I had fitted, because when I did mine, the nipple snapped. I drilled it out, and tapped out the remains of the nipple. I was too careful with the drilling, so went a little deeper, which was too deep lol (I estimate I was about 1/2mm too careful at first). In the end, I bought a replacement caliper - should have just bought new in the first place, it wasnt that much difference in cost. :duh:

Quote:

Originally Posted by clf (Post 2774979)

Rimmers /XPart worked out at £306 for a new pair of rears so I 've refurbed mine. The nipple is definitely the weak point on these things - it's highly likely to snap if it gets rusted in. It's about time the whole thing was redesigned