Author Topic: Brake union thread type & bleed nipple.  (Read 1056 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 CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
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 CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
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  4·75. 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 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 CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
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 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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