Author Topic: Irradicating the oil tank.  (Read 13577 times)

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Offline Alan F.

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Re: Irradicating the oil tank.
« Reply #50 on: November 06, 2010, 08:29:37 AM »
...Oh,do the 750 auto's have an oil tank?

Nope, none at all.

Is it the same oilpump on the 750A as the rest?

Also no, sorry.  Part numbers shown are BikeBandit numbers.

Offline Alan F.

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Re: Irradicating the oil tank.
« Reply #51 on: November 06, 2010, 08:40:06 AM »
The thought has been put out there to simply make a spacer to lower the stock 750K/F oil pan, but windage would be an issue....
The CB750A oil pan has some baffles, are those sufficient to reduce the windage issue?  

How simple (of an idea) would it be to make an oil pan spacer that would bolt up to the bottom of a K/F engine, and accept a CB750A oil pan beneath that?   I'm sure oil pump pickup location would be important, what else would be of great importance?

I'm a little unclear what one would need to connect to the K/F engine's oil line ports, just an oil cooler? The 750A's ran cool enough with just the oil in the pan, right? Would it be advisable to simply connect the two oil ports? (that used to go to an oil tank?)
« Last Edit: November 06, 2010, 08:43:25 AM by Alan F. »

Offline Ricky_Racer

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Re: Irradicating the oil tank.
« Reply #52 on: November 06, 2010, 08:41:16 AM »

Tamburini's solution for the Bimota HB-1...  :o  RR
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Offline 754

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Re: Irradicating the oil tank.
« Reply #53 on: November 06, 2010, 08:53:05 AM »
Alan that is what I suggested, it would have to be billet or cast, top piece bolts to original mounts then sump below that, oil ending at same level. Steel stamped pan is out if made in low numbers. I would use the retun port to run thru a cooler in the hot times, and just looped back in colder weather.
 Re Billy Budde, not positive he ran tankless but seem to remember he tried it.
 The bike shown appears to have a tank, as I see nothing xtra underneath, tank being more central tho, looks a LOT cleaner.. I have a stamped oil filter like he has in the pic..a bit surprised they never get talked about on here.. ???

 Those pipes and he built at least another version, still blow me away, the curves across the front are so well done and the turn bend into the muffler is so smooth looking, still impressed by them.. :o   I mean you may not like the style of the pipes, but the smoothness and fit is still amazing.. and that was done 30 years ago.. Still wonder what he used.. ???.. makes a Yoshi handbent look like a high school project..
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Offline lordmember1969

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Re: Irradicating the oil tank.
« Reply #54 on: November 06, 2010, 12:13:57 PM »

Tamburini's solution for the Bimota HB-1...  :o  RR


Unfortunately, only ten units from this bike were ever produced? :( :(

http://www.motorcyclespecs.co.za/model/bimota/bimota_hb1.htm
« Last Edit: November 06, 2010, 12:16:17 PM by lordmember1969 »
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Offline Ricky_Racer

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Re: Irradicating the oil tank.
« Reply #55 on: November 06, 2010, 01:43:42 PM »

Yep, and as far as I can tell, only two had the cast aluminum oil sump.  :'(  RR

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Offline scottly

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Re: Irradicating the oil tank.
« Reply #56 on: November 06, 2010, 08:44:46 PM »
How about a fabricated sump? Start with a 1/4" thick flange that mates to the bottom of the motor. The flange is clamped down flat to minimize warping while welding thinner aluminum sheet to form the sump itself.
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Offline cdoggy81

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Re: Irradicating the oil tank.
« Reply #57 on: November 22, 2010, 09:12:43 AM »
I like the in the frame idea, what would be the best way to vent it?
I think this is the best hidden \ custom tank I have seen so far...

Offline ev0lve

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Re: Irradicating the oil tank.
« Reply #58 on: November 22, 2010, 09:16:43 AM »
Yow! There you go. I was thinking nestled in between the frame tubes a bit more but that's almost exactly what I was thinking. Is there more/bigger of this bike?


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Offline Frankencake

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Re: Irradicating the oil tank.
« Reply #59 on: November 22, 2010, 10:38:12 AM »
I like the in the frame idea, what would be the best way to vent it?
I think this is the best hidden \ custom tank I have seen so far...
Screw the oil cooler idea.  That is cat's nuts.
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Offline Elan

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Re: Irradicating the oil tank.
« Reply #60 on: November 22, 2010, 01:31:52 PM »
How about in the seat cowl? Assuming ou have a Cafe seat.  Then get those new tiny batteries that could fit anywhere... Long oil lines I suppose..
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Offline Retro Rocket

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Re: Irradicating the oil tank.
« Reply #61 on: November 22, 2010, 02:47:55 PM »
How about in the seat cowl? Assuming ou have a Cafe seat.  Then get those new tiny batteries that could fit anywhere... Long oil lines I suppose..

Thats fine if you are building a cafe, although i suspect that if you had to ride for any distance that you would get a hot arse.

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Offline 23tbucket

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Re: Irradicating the oil tank.
« Reply #62 on: December 25, 2010, 10:26:56 AM »
Industrial Rocket: Eliminating the oil tank can be done. It was done a few times back in the 70's. I haven't done it, but I personally know someone who did this and ran the bike for several years with no problems.
This fellow had a deeper oil pan. They come up on ebay sometimes.
http://cgi.ebay.com/ebaymotors/CB750-SOHC-Deep-Sump-Oil-Pan-Cafe-Chopper-Honda-CB-_W0QQcmdZViewItemQQhashZitem1c1784c0e2QQitemZ120653660386QQptZMotorcyclesQ5fPartsQ5fAccessories

Stock vrs deeper:



You could sandwich a spacer between the stock oil pan and engine block and use two gaskets, or cut off the bottom part of another oil pan and use this as a spacer.

You will need to block off one of the ports going in or out (that go to the tank) of the stock engine and put some sort of a dipstick on the other port.

You can add oil through one of the tappet covers.

Take a real good look at how the pump works...somehow you need to open up the passage way from where the stock tank would have returned from (suction side) so it is open to the new pan set-up. Drilling and/or grinding may be needed?

I don't know if it nessesary to extend the pick-up or not? Probably not as your oil level will be higher now, but might be better to pick up the cooler oil down lower where the fins are?

I would recomend installing an oil cooler.

You may experiance some oil foaming issues now, as the crankshaft will be spinning in oil now?

You will lose ground clearance under the engine.

You will have to figure out ahead of time just where the oil level should be in your new deep pan?

I hope this helps...take pictures if you decide to do this .........curious minds want to know!!!

Offline Retro Rocket

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Re: Irradicating the oil tank.
« Reply #63 on: December 25, 2010, 02:05:04 PM »
Thanks mate, thats about where i was at myself. The bigger sump would have to be baffled to stop oil surging under braking and acceleration, but that wouldn't be too hard to do. I always run coolers here as our temps here are quite warm all year round.
The biggest problem i can see is clearance for pipes under the bike and re routing the oil lines, or modding the pump.

Mick
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Offline 754

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Re: Irradicating the oil tank.
« Reply #64 on: September 14, 2015, 10:37:54 PM »
Bumping back up from the past.
Billy Budde,s Wild Cherry had a blown 836 with a wetsump..
 He was in San Leandro just down from Ness,s shop.
« Last Edit: September 14, 2015, 11:01:42 PM by 754 »
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Offline Retro Rocket

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Re: Irradicating the oil tank.
« Reply #65 on: September 14, 2015, 11:38:18 PM »
Bumping back up from the past.
Billy Budde,s Wild Cherry had a blown 836 with a wetsump..
 He was in San Leandro just down from Ness,s shop.

Is there any info on that Frank...?   I managed to buy a deep sump... ;)
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Offline 754

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Re: Irradicating the oil tank.
« Reply #66 on: September 15, 2015, 12:32:25 AM »
It's in the old street chopper mags,  not sure what year..just was reading online cause I thought Budde had done itplus that other guy was asking.
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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 BPellerine

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Re: Irradicating the oil tank.
« Reply #67 on: September 15, 2015, 12:58:51 PM »
you can google billy buddes wild cherry,a couple of pics,no clear shots of dry sump,july 77 mag pics,blown with ard!bill
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Offline Retro Rocket

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Re: Irradicating the oil tank.
« Reply #68 on: September 16, 2015, 02:19:15 AM »
It's in the old street chopper mags,  not sure what year..just was reading online cause I thought Budde had done it plus that other guy was asking.

I'd like to read that Frank, I couldn't find anything online about it bar a couple of pics that showed nothing...
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Offline FrankenFrankenstuff

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Re: Irradicating the oil tank.
« Reply #69 on: September 16, 2015, 09:41:50 AM »
Funny thing I took away from this thread is that I now want an external oil cooler,filter, deeper pan, and more oil in my little Honda S90. Oil oil oil filter

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Re: Irradicating the oil tank.
« Reply #70 on: September 16, 2015, 12:02:29 PM »
Bumping back up from the past.
Billy Budde,s Wild Cherry had a blown 836 with a wetsump..
 He was in San Leandro just down from Ness,s shop.

Is there any info on that Frank...?   I managed to buy a deep sump... ;)

That was not an easy part to find.  ;)
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Offline Retro Rocket

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Re: Irradicating the oil tank.
« Reply #71 on: September 16, 2015, 12:21:53 PM »
Bumping back up from the past.
Billy Budde,s Wild Cherry had a blown 836 with a wetsump..
 He was in San Leandro just down from Ness,s shop.

Is there any info on that Frank...?   I managed to buy a deep sump... ;)

That was not an easy part to find.  ;)

You got that right... ;D ;)
750 K2 1000cc
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750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.