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Author Topic: Oil tank mods  (Read 2588 times)

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SBSpencer

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Oil tank mods
« on: March 10, 2009, 04:51:30 PM »
I saw a CB750 cafe racer in a magazine.  The owner, builder, had built a custom oil tank which fit inside the frame so that the original side covers were removed and replaced with smooth covers that fit flush with the frame.  Has anyone seen a modified oil tank, and could give me some pointers on finding one or creating one myself?
Thanks.
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Offline Industrial Cafe

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Re: Oil tank mods
« Reply #1 on: March 10, 2009, 06:07:26 PM »
i like this one.
I know its not a flush pan, but my friend has a custom tank/battery box with pans over it...
doesn't look as good as this- IMHO
off a 78
« Last Edit: March 10, 2009, 06:10:31 PM by Industrial Cafe »
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Offline Alan F.

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Re: Oil tank mods
« Reply #2 on: March 10, 2009, 07:55:04 PM »
Search for info on a "CR750 oil tank"  There are reproductions out there, but they're pricey. 
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billybobobrain

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Re: Oil tank mods
« Reply #3 on: March 10, 2009, 08:00:31 PM »
I'm acctualy thinking of welding up a custom tank under the rear seat "hump".
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Offline Alan F.

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Re: Oil tank mods
« Reply #4 on: March 10, 2009, 08:09:50 PM »
I'm considering one in the center of the frame, concealing the battery like a horseshoe tank on a harley, and having a false left side cover to keep my electrics in their stock locations.  Could be pretty cool if done well, I'm thinking it could replace the inner rear fender...maybe have a few flow through airducts with screens to keep things cooler
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Offline Jim F

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Re: Oil tank mods
« Reply #5 on: March 10, 2009, 08:25:10 PM »
 I am trying to do the same thing also as my tank in an endurance tank built by Yoshimura
back in 71-72. I cant use my battery box or electrics in the stock location and the oil  tank has to be moved.
I would like to be able to re-locate all of the electrics but keep the battery/oil tank as close to the original location
as posible but mabey lower down towards the swing arm pivot.

I would like to make a custom tank (Aluminum of coerce)

Any ideas?

 
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Offline 754

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Re: Oil tank mods
« Reply #6 on: March 10, 2009, 08:33:27 PM »
I think Mad Mel had one..
 TRy searching Mad Mel..or Mel Mandel Honda 69 750
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fuzzybutt

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Re: Oil tank mods
« Reply #7 on: March 10, 2009, 10:12:26 PM »
are there baffles or anything like that inside the tank? i'm gotten pretty good at welding aluminum and i'd like to have a cr750 tank for my next build.
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Offline Jim F

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Re: Oil tank mods
« Reply #8 on: March 11, 2009, 06:19:02 AM »
Would love to see the inside or a cut away on one of the tanks
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Offline voxonda

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Re: Oil tank mods
« Reply #9 on: March 11, 2009, 06:24:29 AM »
No baffle's, just make sure the oil feed gets oil all the time. Once made the error to make a tank with the feed on the right and the tank was wider than the original, so in lefthand (sharp) corners there was no oil. So make sure there is a oiltrapp of some kind.
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Offline jonbuoy

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Re: Oil tank mods
« Reply #10 on: March 11, 2009, 09:41:38 AM »
Quote from: Industrial Cafe on March 10, 2009, 06:07:26 PM
i like this one.
I know its not a flush pan, but my friend has a custom tank/battery box with pans over it...
doesn't look as good as this- IMHO
off a 78


The one in this photo is a standard F type oil tank.  I'd like a nice aluminum tank to go with mine as well.
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Offline cafe750

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Re: Oil tank mods
« Reply #11 on: March 11, 2009, 10:29:01 AM »
Quote from: jonbuoy on March 11, 2009, 09:41:38 AM
Quote from: Industrial Cafe on March 10, 2009, 06:07:26 PM
i like this one.
I know its not a flush pan, but my friend has a custom tank/battery box with pans over it...
doesn't look as good as this- IMHO
off a 78


The one in this photo is a standard F type oil tank.  I'd like a nice aluminum tank to go with mine as well.

It's a standard F tank, on a non-standard Seely frame....
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"It's an old motorcycle, the wind is supposed to blow your head around, it's supposed to leak oil, the brakes should suck, and every now and then, it should scare you so bad you piss your pants."



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Offline Industrial Cafe

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Re: Oil tank mods
« Reply #12 on: March 11, 2009, 11:55:45 AM »
I've seen it on K8's too
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everything I say is pure speculation and
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Offline I Zombie

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Re: Oil tank mods
« Reply #13 on: March 11, 2009, 12:19:40 PM »
i stole this from a different post

Quote from: timdhawk on March 03, 2009, 08:06:51 PM
The tube marked "OVRFLW",  is this for overflow oil from the tank to get back to engine, or is this a gasious vent tube from the engine back to the tank for some reason???  What exactly is its purpose?????


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Offline Industrial Cafe

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Re: Oil tank mods
« Reply #14 on: March 11, 2009, 12:50:48 PM »
hey I Zombie, is that you with mistress malice?
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everything I say is pure speculation and
I have no idea what I'm talking about  ._.

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Offline Kev Nemo

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Re: Oil tank mods
« Reply #15 on: March 11, 2009, 01:08:53 PM »
Quote from: cafe750 on March 11, 2009, 10:29:01 AM
Quote from: jonbuoy on March 11, 2009, 09:41:38 AM
Quote from: Industrial Cafe on March 10, 2009, 06:07:26 PM
i like this one.
I know its not a flush pan, but my friend has a custom tank/battery box with pans over it...
doesn't look as good as this- IMHO
off a 78


The one in this photo is a standard F type oil tank.  I'd like a nice aluminum tank to go with mine as well.

It's a standard F tank, on a non-standard Seely frame....

Not to get off-topic, but what's the difference in the Seely frame? It looks like a shaved down stocker (no pass peg bars, mount clips for airbox/chain, centerstand,etc.) If that's the case, I have a Seely in the garage that I'll let go for CHEAP. Now let me go find my decals... ;D
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Offline jonbuoy

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Re: Oil tank mods
« Reply #16 on: March 11, 2009, 01:49:37 PM »
^^^^^ I believe they are a little less flexy and i thought they  allowed for head removal in the frame?
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Offline cafe750

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Re: Oil tank mods
« Reply #17 on: March 11, 2009, 02:17:40 PM »
Quote from: jonbuoy on March 11, 2009, 01:49:37 PM
^^^^^ I believe they are a little less flexy and i thought they  allowed for head removal in the frame?
I think so too, theyre also made with chrome-moly tubing, with slightly different frame geometries. They had a different swingarm, and also really nice front ends....
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"It's an old motorcycle, the wind is supposed to blow your head around, it's supposed to leak oil, the brakes should suck, and every now and then, it should scare you so bad you piss your pants."



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Offline I Zombie

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Re: Oil tank mods
« Reply #18 on: March 11, 2009, 03:31:00 PM »
Quote from: Industrial Cafe on March 11, 2009, 12:50:48 PM
hey I Zombie, is that you with mistress malice?

Oh, yes it is!!!!!  ;) ;)
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Offline Slayer

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Re: Oil tank mods
« Reply #19 on: March 11, 2009, 04:12:41 PM »
A local sohc4 cafe shop tucks the battery away in the bump of the the cafe seat (I always forget what that is called) and puts the oil tank here:

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Offline Alan F.

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Re: Oil tank mods
« Reply #20 on: March 11, 2009, 05:59:33 PM »
That's pretty cool, and along similar lines to what I'm picturing.  My cooling vent tubes will probably scoop on the sides and fire out inside the rear fender if I make one, and it'll probably exceed stock oil capacity. 
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Offline Kev Nemo

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Re: Oil tank mods
« Reply #21 on: March 11, 2009, 08:39:31 PM »
dig this:
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Offline nokrome

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Re: Oil tank mods
« Reply #22 on: March 11, 2009, 09:20:23 PM »
thats really cool..........very original .....havent seen one like that before
         
                   do you have any pictures from other angles??       
                     
                      im making a tank right now, its not as cool as that one but i think its gonna fit the bike real nice, hope to have it done by friday, ill post when its finished
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