Author Topic: Moving the petcock  (Read 713 times)

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Offline Hotwheelbill

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Moving the petcock
« on: March 30, 2017, 10:47:54 AM »
I have to move the petcock on my CB750 tank to better fit on my CB650. It will have to move back about 2". What do I need to get as far as a new petcock? I do not need stock and will need a new fitting to be welded into the new location that the petcock will screw into.
I love to make my bikes worthless due to high mileage!
2004 ST1300A .... the fast one. And dragging pegs on a CT.
1972…parts bike
1974…. Rusty frame but runs
1974 CB750..... Powder coated frame and parts, waiting for $$ hot rod motor.
1972 with 1975 old school drag motor

Offline innovativems

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Re: Moving the petcock
« Reply #1 on: March 30, 2017, 11:04:03 AM »
Alot of chopper websites sell petcock bungs and petcocks.  Just weld it on and patch the old spot


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2007 KTM 990 adv
2003 Honda RC51
2000 Yamaha YSR50
1978 Honda Express
1975 Honda CB400f
1974 Honda CB350f
1974 Kawi H2
1974 Honda CB550f
1971 Kawi h1
1973 Kawi h1
1974 gt 550
1974 gt550

Offline Hotwheelbill

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Re: Moving the petcock
« Reply #2 on: March 30, 2017, 11:22:14 AM »
Alot of chopper websites sell petcock bungs and petcocks.  Just weld it on and patch the old spot


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Once I got off my ass and looked, I found what I needed and smaller size that will work well. Thanks.
I love to make my bikes worthless due to high mileage!
2004 ST1300A .... the fast one. And dragging pegs on a CT.
1972…parts bike
1974…. Rusty frame but runs
1974 CB750..... Powder coated frame and parts, waiting for $$ hot rod motor.
1972 with 1975 old school drag motor

Offline DaveBarbier

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Re: Moving the petcock
« Reply #3 on: March 30, 2017, 11:58:22 AM »
I just moved mine a couple weeks ago.

http://forums.sohc4.net/index.php/topic,140833.msg1897391.html#msg1897391

550 tank's petcock not clearing the carbs for my 650 swap. My tank has a bung that I cut off and welded 4.5" farther back. I reused my stock petcock but I was entertaining the idea of going either Pingel or Golan. Both of which use a 22mm bung. If you want a 22mm weldable steel bung let me know.


Offline Hotwheelbill

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Re: Moving the petcock
« Reply #4 on: March 30, 2017, 12:12:10 PM »
I just moved mine a couple weeks ago.

http://forums.sohc4.net/index.php/topic,140833.msg1897391.html#msg1897391

550 tank's petcock not clearing the carbs for my 650 swap. My tank has a bung that I cut off and welded 4.5" farther back. I reused my stock petcock but I was entertaining the idea of going either Pingel or Golan. Both of which use a 22mm bung. If you want a 22mm weldable steel bung let me know.

Nice job.
Thank you, but I already have a couple of 1/4" bungs and petcocks otw.
I love to make my bikes worthless due to high mileage!
2004 ST1300A .... the fast one. And dragging pegs on a CT.
1972…parts bike
1974…. Rusty frame but runs
1974 CB750..... Powder coated frame and parts, waiting for $$ hot rod motor.
1972 with 1975 old school drag motor

Offline PetesPonies

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Re: Moving the petcock
« Reply #5 on: March 30, 2017, 12:16:05 PM »
Biggest issue, not hurting yourself. Once you wash out the tank as many times as you think necessary, there will still be explosive fumes. Sounds crazy, but I wash, wash, wash, then protect myself, say around a corner from the tank . . .  and drop a flame inside to burn off the last bit. Might want to see how others have done it.
Pete's Ponies
Mustang RUSToration & Performance

Offline Hotwheelbill

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Re: Moving the petcock
« Reply #6 on: March 30, 2017, 12:20:05 PM »
I'm safe. The many years of rust will save me....lol
I love to make my bikes worthless due to high mileage!
2004 ST1300A .... the fast one. And dragging pegs on a CT.
1972…parts bike
1974…. Rusty frame but runs
1974 CB750..... Powder coated frame and parts, waiting for $$ hot rod motor.
1972 with 1975 old school drag motor