Author Topic: Clean oil lines?  (Read 3480 times)

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Offline dgilling

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Clean oil lines?
« on: February 14, 2015, 11:20:38 PM »
What's the best way to clean up the oil lines? Is it even worth it. Mine where all black, then I power washed them now they're a faded white with some black. Can you paint the nylon?

Offline 70CB750

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Re: Clean oil lines?
« Reply #1 on: February 15, 2015, 01:40:42 AM »
Your best bet is to figure out a replacement, every so often somebody reports a leak from the hose. The oil is under zero pressure in there but old hose will eventually leak.

Prokop
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Offline martin99

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Re: Clean oil lines?
« Reply #2 on: February 15, 2015, 01:41:17 AM »
I used some of that plastic spiral armour sleeve stuff to tidy mine up, the kind used for bundling wiring together. No need to take off the hoses :)
Build threads:
77 750F2 Refresh Project http://forums.sohc4.net/index.php?topic=144075.0
TRIBSA http://forums.sohc4.net/index.php/topic,160296.0.html

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Offline bwaller

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Re: Clean oil lines?
« Reply #3 on: February 15, 2015, 04:57:13 AM »
Black shoe polish!

Offline flybox1

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Re: Clean oil lines?
« Reply #4 on: February 16, 2015, 07:37:50 AM »
I pressure washed them too.  they came out light gray.
First i tried full strength RID fabric dye to darken them.  It worked, but not well enough.
Once dried, I taped off the ends and used VHT flat black header paint. 
Still look great after a year  ;D
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

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Offline dgilling

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Re: Clean oil lines?
« Reply #5 on: February 16, 2015, 08:06:22 AM »
Thanks Flybox, I have some VHT header paint Left over.  I'll paint them tonight. 

Offline PeWe

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Re: Clean oil lines?
« Reply #6 on: February 16, 2015, 10:12:00 AM »
No risk that the rubber in the oil lines start to crack due to age?
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Airborne 82nd

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Re: Clean oil lines?
« Reply #7 on: February 16, 2015, 10:34:28 AM »
No risk that the rubber in the oil lines start to crack due to age?

I too would be more concerned about the inside. I vote clean up the ends and replace the old rubber. I went with the stainless mesh cover.

Offline 70CB750

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Re: Clean oil lines?
« Reply #8 on: February 16, 2015, 03:24:51 PM »
My point above, 40 years old rubber is nothing I would call reliable.
Prokop
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Offline edwardmorris

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Re: Clean oil lines?
« Reply #9 on: February 16, 2015, 03:32:12 PM »
My point above, 40 years old rubber is nothing I would call reliable.
Prokop, didn't you DIY braided stainless replacements? If you could please post up details, I'd like to save the leaky pair on my K3.....

Offline 70CB750

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Re: Clean oil lines?
« Reply #10 on: February 16, 2015, 03:45:30 PM »
Yes, I did. McMasterCarr has SS ferrules, your local hydraulic shop will match your fitting to a hose and all it heeds is a crimp.

Some members, like Kickstart, had luck just taking a hose to hydraulic shop and getting them crimped, I was never able to do that.  Napa would not take a chance, Coliflower did not have the right size crimp, it was frustrating.

For my project I found finally this jig at Home Depot, it is used to crimp the new style of house water lines and I paid $25 or so for it and it crimped the hose well enough.

Here it is on Amazon, but I found it locally.
 
http://www.amazon.com/Superior-Tool-07100-Pocket-Crimper/dp/B002RBAADC
« Last Edit: February 16, 2015, 03:48:32 PM by 70CB750 »
Prokop
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I love it when parts come together.

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CB900C

2006 KLR650

Offline edwardmorris

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Re: Clean oil lines?
« Reply #11 on: February 16, 2015, 03:52:08 PM »
Thanks! I'm having terrible luck at the local hose shops too. Somehow they knew they aren't standard hoses and pulled it outta me that they were for a motorcycle. Once they heard that, there was no talking to them. One more q, what size ferrules to go with? I'm sure I can figure out hose diameters, unless you know them off the top of your head....

Offline oldhatt45

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Re: Clean oil lines?
« Reply #12 on: February 16, 2015, 05:53:27 PM »
Ed,

Try this place.  http://www.indrubber.com/index.html 
It is Industrial Rubber in Elizabeth, NJ. 
They have done SCUBA Hoses (5000 psi), Gas Mixing whips (also 5000 psi), and High Pressure lines for the Detroit Diesels I had on my boat.
Admittedly this spans the last 20+ years, but possibly if you call them and ask, you'd only be out  the price of a phone call at worst.

Hope this helps

Charlie

Offline 70CB750

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Re: Clean oil lines?
« Reply #13 on: February 17, 2015, 03:53:35 AM »
Thanks! I'm having terrible luck at the local hose shops too. Somehow they knew they aren't standard hoses and pulled it outta me that they were for a motorcycle. Once they heard that, there was no talking to them. One more q, what size ferrules to go with? I'm sure I can figure out hose diameters, unless you know them off the top of your head....

Yes, they would not take the responsibility or they did not have the spirit that makes things happen, suckers :)

I am pretty sure, these were the ferrules:  9256T35

Just put that code in the search on McMasterCarr web and it will come up.

http://www.mcmaster.com
Prokop
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I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
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CB900C

2006 KLR650

Offline edwardmorris

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Re: Clean oil lines?
« Reply #14 on: February 17, 2015, 10:51:30 AM »
Thanks! I'm having terrible luck at the local hose shops too. Somehow they knew they aren't standard hoses and pulled it outta me that they were for a motorcycle. Once they heard that, there was no talking to them. One more q, what size ferrules to go with? I'm sure I can figure out hose diameters, unless you know them off the top of your head....

Yes, they would not take the responsibility or they did not have the spirit that makes things happen, suckers :)

I am pretty sure, these were the ferrules:  9256T35

Just put that code in the search on McMasterCarr web and it will come up.

http://www.mcmaster.com
Thank you! I'll give it a shot and post in my K3 build thread. I found a thread that had the correct hose dimensions listed, but now I can't find it again  >:( >:( Will post here when I do.

Offline dgilling

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Re: Clean oil lines?
« Reply #15 on: February 18, 2015, 10:26:59 AM »
So why not just buy new stainless ones from CB750 cafe for $69?



http://www.cb750cafe.com/products-page/cafe-parts/stainless-braided-oil-lines/

Offline edwardmorris

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Re: Clean oil lines?
« Reply #16 on: February 18, 2015, 02:20:34 PM »
Found the thread http://forums.sohc4.net/index.php?topic=15821.0


The DIY price is half of CB750 cafe price. I'm going to try this.

-10AN 3' stainless hose from Jegs : $20
9256T35 ferrules from McMaster: $5.51

say roughly $30 shipped for everything. Any local auto shop that provides A/C services will have a hose crimper or you can invest in one like Prokop posted above.

Offline 70CB750

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Re: Clean oil lines?
« Reply #17 on: February 18, 2015, 04:03:45 PM »
So why not just buy new stainless ones from CB750 cafe for $69?



http://www.cb750cafe.com/products-page/cafe-parts/stainless-braided-oil-lines/

First time I see them this cheap.  Somebody here posted SS oil hoses he was making for $150 - 2 years ago or so.
Prokop
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Pure Gas - find ethanol free gas station near you

I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline seanbarney41

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Re: Clean oil lines?
« Reply #18 on: February 18, 2015, 09:06:27 PM »
How do you remove the old end fitting from the old hoses so the new stainless can be crimped on?
If it works good, it looks good...

Offline 70CB750

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Re: Clean oil lines?
« Reply #19 on: February 19, 2015, 03:26:53 AM »
I use hacksaw and cut off the side of the ferrule, parallel to the hose.  Or you can do what he did:



Prokop
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Pure Gas - find ethanol free gas station near you

I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline 72 yellow

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Re: Clean oil lines?
« Reply #20 on: February 19, 2015, 06:17:27 AM »
Looking at Carpy's oil lines, the ends are not crimped.  They are held on by stainless hose clamps with covers.

Offline dgilling

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Re: Clean oil lines?
« Reply #21 on: February 19, 2015, 09:33:12 AM »
I feel like I have so much more to do that an extra $30 is worth it to just buy from cb750 cafe

Offline seanbarney41

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Re: Clean oil lines?
« Reply #22 on: February 19, 2015, 01:11:16 PM »
I use hacksaw and cut off the side of the ferrule, parallel to the hose.  Or you can do what he did:




ok, so the ferule is not part of the hose end fitting?  I make a lot of hydraulic hoses at work and the part that gets crimped/ferule is an integral part of the hose end.   They can only be crimped once.
If it works good, it looks good...

Offline 70CB750

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Re: Clean oil lines?
« Reply #23 on: February 19, 2015, 03:12:58 PM »
Thats correct, the ferrule slips on the hose for the crimp.

These are not hydraulic hoses, only oil supply. They carry 0 psi pressure.
Prokop
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Pure Gas - find ethanol free gas station near you

I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline edwardmorris

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Re: Clean oil lines?
« Reply #24 on: February 19, 2015, 03:18:16 PM »
Stuff's on its way, hopefully some pix soon when I get it together next week. Thanks Prokop and Mikeb4.