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Author Topic: Cylinder head balance pipe!  (Read 520 times)
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anita
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« on: 27.07. 2010 18:38 »

Hi all, this is the cylinder head that we bought on Sunday, it came on the standard A10 barrels.  Bob has asked if I could enquire why a single carb head would have a balance pipe on it, I want to know is it a balance pipe and what it might be from originally.  Any light you could shed on this would be appreciated as it will be ending up on my A10 and I'd like to know what to tell people if they ask me!



There one more photo on my album but its a bit blurry
Anita
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1951 BSA A10 plunger
1967 BSA C15
2004 Enfield Classic Bullet 500CC
bsa- bill
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« Reply #1 on: 27.07. 2010 19:15 »

Just a guess Anita - possible a vacuum gauge been fitted, no Idea why, more likely the pipe was fitted into the rockers to draw off pressure.
Some ( quite a lot ) of people seem to think there is an issue with A10/7 engines building up pressure in the rocker boxes, can't see it myself but each to there own.
there are four escape routes for pressure out of the rocker box back to the crankcase so my thoughts are a pressure problem in the rockers is a pressure problem in the whole engine and should be treated as such, never had any problems in this area myself
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muskrat
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Lake Conjola NSW Oz


« Reply #2 on: 27.07. 2010 23:05 »

G'day Anita,
                   is it a solid tube or a hose onto tube fittings? Looks like the PO tried to eliminate induction bias, don't think it would work.
Cheers
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Only young once, immature forever. Now how can I make this go faster. '51 A7 plunger, '57 A7SS now A10, '71 A65 Lightning (gone to god) '76 XT500, '83 CB1100F, next project a '64 A65.
Goldseeker
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« Reply #3 on: 28.07. 2010 10:37 »

G'day Anita,
                   is it a solid tube or a hose onto tube fittings? Looks like the PO tried to eliminate induction bias, don't think it would work.
Cheers

I think you could be right there, interesting concept, wonder if it did work.
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Col.

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« Reply #4 on: 28.07. 2010 10:45 »

Oops sorry I didn't see second picture, junks my theories
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anita
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« Reply #5 on: 28.07. 2010 20:44 »

Its a solid steel pipe
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1951 BSA A10 plunger
1967 BSA C15
2004 Enfield Classic Bullet 500CC
Goldseeker
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« Reply #6 on: 28.07. 2010 21:56 »

Its a solid steel pipe

Do you mean solid as in solid rod or pipe as in steel pipe?

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Col.

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anita
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« Reply #7 on: 28.07. 2010 22:19 »

Its a hollow steel tube pipe, sorry didnt make it clear last time
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1951 BSA A10 plunger
1967 BSA C15
2004 Enfield Classic Bullet 500CC
chaterlea25
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« Reply #8 on: 28.07. 2010 23:39 »


Carrying handle  huh2 huh2 huh2 huh2

 smile smile smile

John O R
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wilko
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« Reply #9 on: 29.07. 2010 01:21 »

Yes, a carrying handle, i agree, they are heavy!!
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terryk
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« Reply #10 on: 29.07. 2010 11:59 »

I think muskrat is right someone has tried to sort out a bias problem they can be frustrating when it happens. I may have helped you never know.
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1951 A10 plunger, 1958 A10 super rocket, 1948 A7 longstroke,
1951 A7 plunger, 1940s M21, WDM20, 1948 B33, 1949 b31
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