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Topic:
Stripped Carb Bowl Screw- Question# 881
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Topic: Stripped Carb Bowl Screw- Question# 881 (Read 989 times)
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briancwynn
If created then it is for a purpose!
Enthusiast
Posts: 211
Stripped Carb Bowl Screw- Question# 881
«
on:
September 15, 2016, 02:33:43 pm »
Okay all the screw thread for one of my carb bowls is stripped. This would be part of the body of the carb that is stripped and not the screw itself. My question is do I try and tap it for the same size or go up one size? Or should I do something else that you dont know until you ask? Thanks all for the help.
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Honda CB750 1978 K
Stock Carbs w/ Pods
125 main jets, stock slow, and 2 shims on the needle (equal to about raising it one clip)
M-unit
Bike broken down to bare bones and slowly put back together (except for the engine)
flybox1
My wife thinks I'm a
Really Old Timer ...
Posts: 14,301
Re: Stripped Carb Bowl Screw- Question# 881
«
Reply #1 on:
September 15, 2016, 02:37:06 pm »
No sense pitching the bowl. Try acorn nuts, and just get 4-5mm longer screws.
Tapping for next size up has been done.
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'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
Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins
"This is my CB. There are many like it, but this one is mineā¦"
ekpent
Really Old Timer ...
Posts: 13,512
To many bikes-but lookin' for more
Re: Stripped Carb Bowl Screw- Question# 881
«
Reply #2 on:
September 15, 2016, 03:54:16 pm »
You may be able to get by tapping up to the next size non metric screw bolt but just a guess without seeing it.
«
Last Edit: September 15, 2016, 07:36:41 pm by ekpent
»
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jonda500
I may be crazy but I'm not stupid!
Master
Posts: 1,793
With our thoughts we make the world (Monkey Magic)
Re: Stripped Carb Bowl Screw- Question# 881
«
Reply #3 on:
September 15, 2016, 05:12:12 pm »
When this happened to mine I got away with slightly longer screws for a while, but in the end I simply installed helicoils and put the original screws back in - aside from a new carb body I think this is the best fix.
John
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Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!
A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
http://forums.sohc4.net/index.php/topic,149161.msg1711626.html#msg1711626
197? CB500/550 constructing from left over parts
1998 KTM 380 (two stroke) recent impulse buy, mmmm...
briancwynn
If created then it is for a purpose!
Enthusiast
Posts: 211
Re: Stripped Carb Bowl Screw- Question# 881
«
Reply #4 on:
September 21, 2016, 11:17:44 am »
All,
I did the TAP and it worked great. Went to 8/32 and nice and tight.
Thanks all for the help.
Thank you.
Logged
Honda CB750 1978 K
Stock Carbs w/ Pods
125 main jets, stock slow, and 2 shims on the needle (equal to about raising it one clip)
M-unit
Bike broken down to bare bones and slowly put back together (except for the engine)
ekpent
Really Old Timer ...
Posts: 13,512
To many bikes-but lookin' for more
Re: Stripped Carb Bowl Screw- Question# 881
«
Reply #5 on:
September 21, 2016, 12:23:09 pm »
Thought that might work, the other fixes are still in your back pocket up the road if need be.
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kidrcth
Enthusiast
Posts: 160
Re: Stripped Carb Bowl Screw- Question# 881
«
Reply #6 on:
September 21, 2016, 07:21:20 pm »
I personally hate helicoils. So I understand why I haven't seen that posted. However working in aviation we use thread inserts. It's an entirely encapsulated thread that screws into the material and you either stake it or glue it in place. Rarely ever strip out.
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Stripped Carb Bowl Screw- Question# 881