Author Topic: Brake union thread type & bleed nipple.  (Read 566 times)

Offline McCabe-Thiele (Ted)

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Brake union thread type & bleed nipple.
« on: September 18, 2022, 03:55:31 PM »
Sadly my stock of brake unions & bleed nipples mostly went in the bin as they not metric. The few metric unions  I have are too short.

Our local motor spares place shut after Covid - can someone sende a link or telle the size as my flaring tool is still good. Thanks.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline Bryanj

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Re: Brake union thread type & bleed nipple.
« Reply #1 on: September 18, 2022, 04:14:04 PM »
Honda use the odd size m10 Ted and i think the bleed nipples are m7, will check and confirm later,

Offline Bryanj

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Re: Brake union thread type & bleed nipple.
« Reply #2 on: September 18, 2022, 04:30:12 PM »
M10x1.25 is the pipe thread, cant remember where my spare bleed nipples are but it was a new one in the 500 mate, 8mm spanner size from memory and even if its only been in there a short time warm the caliper body and use a ter wrench to undo

Offline McCabe-Thiele (Ted)

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Re: Brake union thread type & bleed nipple.
« Reply #3 on: September 18, 2022, 05:03:37 PM »
M10x1.25 is the pipe thread, cant remember where my spare bleed nipples are but it was a new one in the 500 mate, 8mm spanner size from memory and even if its only been in there a short time warm the caliper body and use a ter wrench to undo
My m7 was too big, nipple a tad rounded had to put it in the vice & rotate the the caliper half.
Brake pipe was pinched & twisted - snapped the pipe within a fraction of a turn. No Biggie I have plenty of new pipe.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline Bryanj

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Re: Brake union thread type & bleed nipple.
« Reply #4 on: September 18, 2022, 05:37:50 PM »
Careful with new pipe nuts Ted, old imperial when flared had a cone on the end of the pipe that was both sides, dies marked 3/16, metric was only flared on the front and flat backed, dies marked  4ยท75. I have seen metric pipe nuts advertised that need the imperial flare type

Offline Nurse Julie

  • 1977 CB550/4 Mongrel Brat. 1974 UK 500/4 K1. Honda CD250u.
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Re: Brake union thread type & bleed nipple.
« Reply #5 on: September 18, 2022, 05:55:04 PM »
I've got the bleed nipples in stock Ted.
LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline McCabe-Thiele (Ted)

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Re: Brake union thread type & bleed nipple.
« Reply #6 on: September 18, 2022, 06:13:17 PM »
I've got the bleed nipples in stock Ted.
I've sent a PM.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline Nurse Julie

  • 1977 CB550/4 Mongrel Brat. 1974 UK 500/4 K1. Honda CD250u.
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Re: Brake union thread type & bleed nipple.
« Reply #7 on: September 18, 2022, 06:19:06 PM »
I've got the bleed nipples in stock Ted.
I've sent a PM.
Yep, received that thanks Ted.
LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

 

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