Author Topic: Hones for 10mm master cylinders.  (Read 7053 times)

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Offline 754

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Hones for 10mm master cylinders.
« on: December 07, 2008, 09:15:39 pm »
anyone know of a souce for a proper hone?

Got a bunch of master cylinders, that I would like to strip & inspect, and then sell.
Maker of the WELDLESS 750 Frame Kit
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Lost quite a few CB 750's along the way

Offline coyotecowboy

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Re: Hones for 10mm master cylinders.
« Reply #1 on: December 07, 2008, 09:21:17 pm »
I don't know where to get a 10mm hone, but what kind of master cylinders ya got?  I'd like to have a 10 or 11 (prefer an 11) but all I am finding is newer looking stuff.  I'd like something that looks period for a K2 750.
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Offline 754

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Re: Hones for 10mm master cylinders.
« Reply #2 on: December 07, 2008, 09:47:40 pm »
Most of them are for sohc up to 76 , maybe a few that are 77/78.

I just want to inpect and make sure they are good before I sell them, if I can hone them even better. I  have the right circlip pliers, so they wont get all gurfed up thaking them apart..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline coyotecowboy

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Re: Hones for 10mm master cylinders.
« Reply #3 on: December 08, 2008, 04:38:11 am »
Ummm, isn't a sohc cylinder 14mm  ??? Or did the 750 use something different than the smaller bikes?
The adventure begins when things stop going as planned - Glen Heggstad

http://www.alrpost69.com/

Sunrise Orange 750 K2

1981 Husqvarna 430 XC, "Inga"

Offline Steve F

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Re: Hones for 10mm master cylinders.
« Reply #4 on: December 08, 2008, 04:38:32 am »
Be very careful with a hone on aluminum bores.  I almost destroyed a master cyl trying to hone it because the material is really <really> soft and damages easily.  I was able to get a standard brake cyl hone to go in, but it was really too tight to begin with. Made about three revolutions and realised it was a bad idea.

Offline 754

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Re: Hones for 10mm master cylinders.
« Reply #5 on: December 08, 2008, 06:01:35 am »
Will check size, I know 14mm is the size of the Fmodel rear ones.
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline edbikerii

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Re: Hones for 10mm master cylinders.
« Reply #6 on: December 08, 2008, 06:57:06 am »
I am only certain that the 77 CB550 is 14mm.
SOHC4 #289
1977 CB550K - SOLD
1997 YAMAHA XJ600S - SOLD
1986 GL1200I - SOLD
2004 BMW R1150R

Jetting: http://forums.sohc4.net/index.php?topic=20869.msg258435#msg258435
Needles:  http://forums.sohc4.net/index.php?topic=20869.msg253711#msg253711

Offline chrislib

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Re: Hones for 10mm master cylinders.
« Reply #7 on: December 08, 2008, 05:33:31 pm »
When I did the MC on my bike I used a split mandrel from a cheapie head porting kit I have. I threaded a strip of schotchbrite into it, worked like a charm.
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1973 CB750K...CANDY BACCHUS OLIVE

Offline 754

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Re: Hones for 10mm master cylinders.
« Reply #8 on: December 08, 2008, 07:59:44 pm »
Well I was wrong! WRONG as the day is Long.. :o

loks like it must be 12 or 14mm.

 I could hone them with a split shaft, but would rather have proper tooling. I was just thinking that an inspected, cleaned , honed mc.. ready to take a kit would bring a better buck and come with piece of mind...rather than buying an unknown condition one..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline bryanj

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Re: Hones for 10mm master cylinders.
« Reply #9 on: December 08, 2008, 08:40:22 pm »
I'm sure its 14 with the Wing being 17
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline coyotecowboy

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Re: Hones for 10mm master cylinders.
« Reply #10 on: December 08, 2008, 10:06:30 pm »
That sounds right, 14mm master cylinder bore with a 38mm piston in the caliper, which yields a rather wooden ratio of 7.37 to 1 with a single disc and 14.73 to 1 with a dual disc setup :o  That is why I was curious if you had 10mm or 11mm cylinders, that would give me a more gradual ratio of 14-11 with a single disc and 28-23 with duals.  Oh well, Mikes XS has a slick slimline 11mm cylinder that just might work ;)
The adventure begins when things stop going as planned - Glen Heggstad

http://www.alrpost69.com/

Sunrise Orange 750 K2

1981 Husqvarna 430 XC, "Inga"

Offline Terry in Australia

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Re: Hones for 10mm master cylinders.
« Reply #11 on: December 15, 2008, 06:28:36 pm »
I don't think SOHC4 cylinders usually suffer to much from pitting Frank, I'd suggest that you pull them apart and take a peek first, I've been able to rebuild every one I pulled apart, without any problems.

If you want to really make some money on them, rebuild them and sell them as such, it's been my experience that most folk would rather pay extra for a "rebuilt" item, than a "rebuildable" one. Cheers, Terry. ;D
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Offline bert96

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Re: Hones for 10mm master cylinders.
« Reply #12 on: January 23, 2009, 06:09:53 pm »
anyone know of a souce for a proper hone?

Got a bunch of master cylinders, that I would like to strip & inspect, and then sell.

I don't know if you still search for this tool but here's one,


http://cgi.ebay.com/ebaymotors/HONDA-CB360-CX500-CB750-MASTER-CYLINDER-HONING-TOOL_W0QQcmdZViewItemQQ_trksidZp1713Q2em153Q2el1262QQcategoryZ35592QQihZ012QQitemZ220348985896QQtcZphoto
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Offline Terry in Australia

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Re: Hones for 10mm master cylinders.
« Reply #13 on: January 23, 2009, 06:17:11 pm »
Just as I was gonna reply, I noticed Bert's avatar, and forgot what I was gonna reply about! :o

Oh that's right, hones. Those flexhones are very good, I've got an engine cylinder one here, and I find it works very well.

I still don't think you need one for our bikes, but if you're gonna, that's the tool to do it! ;D 
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

Offline Bankerdanny

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Re: Hones for 10mm master cylinders.
« Reply #14 on: March 07, 2011, 04:28:10 pm »
The guys over at Motorcycle Classics used fine grit emery cloth wrapped around rubber hose when they rebuilt the mc on their CB500 cafe build. You can find the article and pics on their site

http://www.motorcycleclassics.com/multimedia/image-gallery.aspx?id=2147484324
« Last Edit: March 07, 2011, 08:59:59 pm by Bankerdanny »
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Offline 754

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Re: Hones for 10mm master cylinders.
« Reply #15 on: March 07, 2011, 08:00:14 pm »
 I clicked the link, and it would not come up.. either pullrd or staledated..
 What kind of hone was it ??

 I am sitting on at least a dozen MCs
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline bryanj

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Re: Hones for 10mm master cylinders.
« Reply #16 on: March 09, 2011, 11:16:13 pm »
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!