Author Topic: What's up with this gas cap?  (Read 1842 times)

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Offline Scott S

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What's up with this gas cap?
« on: April 13, 2010, 04:29:41 PM »
 What can you tell me about this gas cap? I just scored a sweet deal on a tank and side covers and it came with this cap. It's vented and the rubber is new, the chrome will clean right up, but what's the deal with the plastic center?
 I've never seen one like this. What did it look like originally and what can I do to restore/replace it?
 BTW, I have a "regular" chrome cap I can use but I'm really curious about this one...
'71 CB 500 w/ CB650 engine
'78 CB550K
'75 Yamaha XS650
'87 Yamaha Radian
 and too many projects...



Offline matthew gabrielse

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Re: What's up with this gas cap?
« Reply #1 on: April 13, 2010, 04:49:02 PM »
It functions as a gas gauge if it still has the float attached to the cap.
74 cb750k

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Offline domer

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Re: What's up with this gas cap?
« Reply #2 on: April 13, 2010, 05:01:51 PM »
like one of these... except yours might not be functional any more...

http://www.yamiya750e.com/index.php?main_page=product_info&cPath=32_80&products_id=830



Offline Scott S

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Re: What's up with this gas cap?
« Reply #3 on: April 13, 2010, 07:09:11 PM »
 Wow, that's really cool. I've never seen anything like that before. Sure wish it was in better shape!
'71 CB 500 w/ CB650 engine
'78 CB550K
'75 Yamaha XS650
'87 Yamaha Radian
 and too many projects...



Offline Johnie

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Re: What's up with this gas cap?
« Reply #4 on: April 13, 2010, 07:12:40 PM »
I can not see the face on the gauge, but keep in mind the original ones in used condition can bring in some nice change. I had one of the originals that came on my K4. It worked and was missing the plastic lense. I still got over $100 for it. I do not recall what the original lettering was except it said JAPAN on it. The newer ones look the same but do not have the JAPAN on it.
John
1969 CB750K0 - Candy Blue Green (current)
1970 CB750K0 - Candy Ruby Red
1970 CB750K1 - Candy Gold
1973 CB750K3 - Candy Bacchus Olive
1974 CB750K4 - Flake Sunrise Orange
2000 1500 SE Wing


Honda's owned in the past:
1965 65SS, 1969 CB350, 1971 CB350, 1972 CL175, 1974 CB450, 1975 CB360T, 1977 CB750K, 1980 CM400E, 1981 CM400C
Oshkosh, WI  USA



Online faux fiddy

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Re: What's up with this gas cap?
« Reply #5 on: April 14, 2010, 01:54:36 AM »
This is a picture of one on a thread titled  "Three Wheeled Heap."



There was another thread on parts 4 sale of a restored one  for sale that offered something like donating 20% of the sale price on e-bay  to sohc 4 forum if the buyer was a member.
« Last Edit: April 14, 2010, 01:56:57 AM by poor boi »
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Offline Scott S

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Re: What's up with this gas cap?
« Reply #6 on: April 14, 2010, 05:42:06 AM »
 I'm pretty sure there are no "guts" left in mine...I'll check closer today. Maybe I can find a Honda emblem or something to stick in there where the gauge once lived.
'71 CB 500 w/ CB650 engine
'78 CB550K
'75 Yamaha XS650
'87 Yamaha Radian
 and too many projects...



Offline Tretnine

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Re: What's up with this gas cap?
« Reply #7 on: April 14, 2010, 08:08:00 AM »
Those are cool. Is there a source for 550k versions, or is all of this gear from days gone by?
http://www.behindbarsmotorcycle.com/

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Offline Johnie

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Re: What's up with this gas cap?
« Reply #8 on: April 14, 2010, 08:12:37 AM »
Yes, that is the picture of the one that I sold on eBay. I started the bidding at $20 and was taken back at the ending amount. They make similar ones you can buy new on eBay for $110. I got over that amount for my working used one with no lense. Probably because it was the vintage style you show in your picture.
John
1969 CB750K0 - Candy Blue Green (current)
1970 CB750K0 - Candy Ruby Red
1970 CB750K1 - Candy Gold
1973 CB750K3 - Candy Bacchus Olive
1974 CB750K4 - Flake Sunrise Orange
2000 1500 SE Wing


Honda's owned in the past:
1965 65SS, 1969 CB350, 1971 CB350, 1972 CL175, 1974 CB450, 1975 CB360T, 1977 CB750K, 1980 CM400E, 1981 CM400C
Oshkosh, WI  USA



Offline domer

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Re: What's up with this gas cap?
« Reply #9 on: April 14, 2010, 11:27:50 AM »
yamiya750e.com has repops. for a price.



Offline Johnie

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Re: What's up with this gas cap?
« Reply #10 on: April 14, 2010, 12:25:32 PM »
I sold mine because of personal preference. I just think they look bulky and to be honest, sort of ugly on a nice OEM tank.
John
1969 CB750K0 - Candy Blue Green (current)
1970 CB750K0 - Candy Ruby Red
1970 CB750K1 - Candy Gold
1973 CB750K3 - Candy Bacchus Olive
1974 CB750K4 - Flake Sunrise Orange
2000 1500 SE Wing


Honda's owned in the past:
1965 65SS, 1969 CB350, 1971 CB350, 1972 CL175, 1974 CB450, 1975 CB360T, 1977 CB750K, 1980 CM400E, 1981 CM400C
Oshkosh, WI  USA



Offline sangyo soichiro

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Re: What's up with this gas cap?
« Reply #11 on: April 14, 2010, 12:28:00 PM »
I have a cap like that, and my lens is milky too, but not that bad.  I want to replace the lens but that's for a future project.  I like being able to see the gas level though.
1974 CB 750



Offline lone*X

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Re: What's up with this gas cap?
« Reply #12 on: April 14, 2010, 06:54:24 PM »
I have a cap like that, and my lens is milky too, but not that bad.  I want to replace the lens but that's for a future project.  I like being able to see the gas level though.

Ever try polishing it with headlight lens polish?  I use the lens polish on my cars to keep the plastic lens covers clear.  Works great.
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Offline sangyo soichiro

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Re: What's up with this gas cap?
« Reply #13 on: April 14, 2010, 07:02:01 PM »
I have a cap like that, and my lens is milky too, but not that bad.  I want to replace the lens but that's for a future project.  I like being able to see the gas level though.

Ever try polishing it with headlight lens polish?  I use the lens polish on my cars to keep the plastic lens covers clear.  Works great.

I'll have to give that a shot.  Thanks.
1974 CB 750



Offline andy750

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Re: What's up with this gas cap?
« Reply #14 on: April 14, 2010, 07:45:49 PM »
I sold one on Ebay just like the one in the photo - $262 was the end price ;)

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Offline Johnie

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Re: What's up with this gas cap?
« Reply #15 on: April 14, 2010, 07:56:52 PM »
I sold one on Ebay just like the one in the photo - $262 was the end price ;)



Wow, and I thought I did well on mine Andy. You killed...
John
1969 CB750K0 - Candy Blue Green (current)
1970 CB750K0 - Candy Ruby Red
1970 CB750K1 - Candy Gold
1973 CB750K3 - Candy Bacchus Olive
1974 CB750K4 - Flake Sunrise Orange
2000 1500 SE Wing


Honda's owned in the past:
1965 65SS, 1969 CB350, 1971 CB350, 1972 CL175, 1974 CB450, 1975 CB360T, 1977 CB750K, 1980 CM400E, 1981 CM400C
Oshkosh, WI  USA



Offline Old75_ratafe

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Re: What's up with this gas cap?
« Reply #16 on: April 15, 2010, 04:25:24 AM »
Yes, that is the picture of the one that I sold on eBay. I started the bidding at $20 and was taken back at the ending amount. They make similar ones you can buy new on eBay for $110. I got over that amount for my working used one with no lense. Probably because it was the vintage style you show in your picture.

Guess I robbed someone then I got mine with a good tank that had a good petcock and oem emblems it had a light dent in it (took me all of 15 mins to get out with some gentle prybar action) it is identical with the japan stamping and I think I paid around $70 with ship.  Hey does anyone own these I haven't mounted it on my bike yet are they noisy?  I hadn't put it in yet as it occurred to me it might make a lot of noise the float bouncing around inside the tank and drive me nuts.  Shoot if they go for 100~200 broken I wonder what I could sell the working gauge tank and emblems for.... Might pay for that 550 project I've been thinking about  :o
« Last Edit: April 15, 2010, 04:30:05 AM by Old75_ratafe »
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Re: What's up with this gas cap?
« Reply #17 on: April 15, 2010, 04:49:28 AM »
Yes, that is the picture of the one that I sold on eBay. I started the bidding at $20 and was taken back at the ending amount. They make similar ones you can buy new on eBay for $110. I got over that amount for my working used one with no lense. Probably because it was the vintage style you show in your picture.

Guess I robbed someone then I got mine with a good tank that had a good petcock and oem emblems it had a light dent in it (took me all of 15 mins to get out with some gentle prybar action) it is identical with the japan stamping and I think I paid around $70 with ship.  Hey does anyone own these I haven't mounted it on my bike yet are they noisy?  I hadn't put it in yet as it occurred to me it might make a lot of noise the float bouncing around inside the tank and drive me nuts.  Shoot if they go for 100~200 broken I wonder what I could sell the working gauge tank and emblems for.... Might pay for that 550 project I've been thinking about  :o

More power to you if you find someone who likes it with enough $ to get you a project bike. Spare those details for later, but I don't think it would rattle real bad with the tank anywhere but empty. Haven't had one myself.
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<'  '  '   '  o .  . . . . . . .................(
 ' VVVVV'   ')))))____>-''''''''''''''''''\  l
' . vvvv_   -              -                 \/



Offline matthew gabrielse

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Re: What's up with this gas cap?
« Reply #18 on: April 15, 2010, 09:38:55 AM »
The float bounced around in mine a bit. It wasn't that noticeable when driving but very annoying when parking and such. The viewing window was all milky so I couldn't see the guage anyways, I ripped the float off and threw it in the nearest trash can. This was before I knew they were rare and valuable.
74 cb750k

If life hands you lemons, make lemonade. If life hands you tomatoes, make tomato soup. If life hands you a box of hand grenades... well, now... THAT'S a message!!



Offline Old75_ratafe

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Re: What's up with this gas cap?
« Reply #19 on: April 16, 2010, 02:50:45 AM »
See what happens I am kinda considering just selling the tank and gauge together.
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Offline Frankenkit

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Offline Retro Rocket

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Re: What's up with this gas cap?
« Reply #21 on: April 16, 2010, 03:30:29 AM »
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Offline OneWheelDrive

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Re: What's up with this gas cap?
« Reply #22 on: January 25, 2011, 02:10:43 PM »
My bike has a very similar gauge on it.  The lens isn't cracked but very cloudy.  Any ideas how to polish it clear again? 
2008 Ducati Hypermotard 1100S
1973 CB350F
1975 CB550K Project "Keeper"
2010 Ducati Monster S4RS *sold*
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Offline domer

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Re: What's up with this gas cap?
« Reply #23 on: January 25, 2011, 03:43:52 PM »
i use Meguiars plastic-x. works like a charm on plastic headlights...



Offline OneWheelDrive

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Re: What's up with this gas cap?
« Reply #24 on: January 25, 2011, 04:26:15 PM »
Excellent.  I'll give it a try.  My bike has that cap and I just found the big white tampon bobber that goes with it.  I'm sure it works like crap but I may as well be able to see it work like crap.  :D
2008 Ducati Hypermotard 1100S
1973 CB350F
1975 CB550K Project "Keeper"
2010 Ducati Monster S4RS *sold*
1976 CB360T *sold*
1974 CB550K *sold*
1973 CB750K *sold*
1978 CB550K *sold*
2007 Vespa LX150 *sold*