Author Topic: BSA A7 oil leaks  (Read 1155 times)

Online KiwiGF

  • Last had an A10 in 1976, in 2011 it was time for my 2nd one. It was the project from HELL (but I learned a lot....)
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Re: BSA A7 oil leaks
« Reply #15 on: 22.05. 2018 22:54 »
G'day Tim.
OK I've put up a pic of a timing side. Red horizontal arrow points to a hole in the cases, oil will escape from there as the crank is whizzing round flinging all the oil that is pumped into the crank. That's normal. The yellow arrow is pointing to the crank journal and bush joint (behind the pimion), a little oil will escape from there. The red virtical arrow points to the case and bush joint, no oil should leak from there (see Orabandas post).
 If the sump and oil lines have been drained it will take quite some time (a minute or so) for oil to be returned to the tank, which can worry the uninitiated.
Cheers

PS: Now get over to the Introductions section and tell us all about your love for A7's

It’s never occurred to me to run my a10 without the timing cover on! Is this something that is “normal” to do anyway? I suppose one could do the timing with a disc attached to the crank nut with the cover off, but I would have thought oil would leak out and make a mess, even though it’s a dry sump design?
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1956 A10 Golden Flash (1st finished project)

1949 B31 rigid “400cc hot rod” (2nd finished project, + favourite bike)

GL1800 Goldwing, well, the wife likes it

KTM 950 ADV, cos it’s 100% nuts

1952 Armstrong Siddeley Whitley for rainy days (with wife)

Online muskrat

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Re: BSA A7 oil leaks
« Reply #16 on: 23.05. 2018 08:08 »
I did ONCE for about 5 seconds *eek*. And that was after she was hot so only had about a cup of oil in the case. I'd hate to see the mess if she'd wet sumped a pint or two *ex*
Cheers
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'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Online KiwiGF

  • Last had an A10 in 1976, in 2011 it was time for my 2nd one. It was the project from HELL (but I learned a lot....)
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Re: BSA A7 oil leaks
« Reply #17 on: 23.05. 2018 11:24 »
I did ONCE for about 5 seconds *eek*. And that was after she was hot so only had about a cup of oil in the case. I'd hate to see the mess if she'd wet sumped a pint or two *ex*
Cheers

Thanks Musky, I was beginning to think I’d missed an important check on engine condition or something!  *whistle*

I’ll not be trying it anytime soon, I value my clean garage floor too much *smile*
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New Zealand

1956 A10 Golden Flash (1st finished project)

1949 B31 rigid “400cc hot rod” (2nd finished project, + favourite bike)

GL1800 Goldwing, well, the wife likes it

KTM 950 ADV, cos it’s 100% nuts

1952 Armstrong Siddeley Whitley for rainy days (with wife)

Offline tim

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Re: BSA A7 oil leaks
« Reply #18 on: 23.05. 2018 14:03 »
Thankyou very much to those who have helped me out over the leaky oil pump problem. It is really appreciated and means I can now get out on my A7 and enjoy what the English summer has to offer.
Thanks again everyone.
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Offline tim

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Re: BSA A7 oil leaks
« Reply #19 on: 23.05. 2018 17:47 »
Thanks very much for the helpful photograph and explanations.
Tim
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Offline tim

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Re: BSA A7 oil leaks
« Reply #20 on: 23.05. 2018 21:02 »
Hi - photograph of my A7.
Thanks for all your help.
Tim
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Offline BSA_54A10

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Re: BSA A7 oil leaks
« Reply #21 on: 24.05. 2018 06:22 »
Thankyou very much to those who have helped me out over the leaky oil pump problem. It is really appreciated and means I can now get out on my A7 and enjoy what the English summer has to offer.
Thanks again everyone.

Warm rain ? *smile*
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Bike Beesa
Trevor