Author Topic: 1951 BSA A7  (Read 4230 times)

Offline anjimehra

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Re: 1951 BSA A7
« Reply #15 on: 29.01. 2014 08:00 »
Yep that's the bush. It's the type that has a steel outer and bronze inner. See how it fits between the two flats in the casing. Do not try to press the bronze bush out as they are sometimes pegged to the outer. To remove just heat the case to about 200 C and it will fall out.
While your there. Behind that screw is the oil retaining ball & spring (anti wet sump valve). Replace them
Cheers

Thanks muskrat. Already have the ball out & will replace after blowing out the galleries.

Offline anjimehra

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Re: 1951 BSA A7
« Reply #16 on: 29.01. 2014 08:03 »
yep thats just as Muskrat states, the bush in my post is the other type used (solid brass/Phosfer bronze) so looks quite different to the one in your case - should of mentioned that *roll*

Thanx Bill

Online trevinoz

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Re: 1951 BSA A7
« Reply #17 on: 29.01. 2014 19:54 »
Hi John,
             It seems that you are damned if you do, damned if you don't!   

Trev.

Offline bikerboy

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Re: 1951 BSA A7
« Reply #18 on: 19.02. 2014 03:57 »
Do we have to keep mentioning that damned ball that I forgot to do on my last rebuild  *sad2*

Offline anjimehra

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Re: 1951 BSA A7
« Reply #19 on: 28.02. 2014 06:43 »
Thanks all forthe help
Anji

Online muskrat

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Re: 1951 BSA A7
« Reply #20 on: 28.02. 2014 10:14 »
How far along have you got Anji?
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline anjimehra

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Re: 1951 BSA A7
« Reply #21 on: 03.03. 2014 06:53 »
How far along have you got Anji?
Cheers

Hi Muskrat
Great hearing from you. Trust all OK
Making progress slow & steady. You know how it is with a basket case. One of the bores was done off centre so had to have a special liner made to realign the centre line. Bores, head, bottom end done. Made new sludge trap nuts, SS nuts bolts studs all around. Mag reconditioned. Have to make new wheel axles as the ones that came were from some other M/c. By the way, are the BB33 ( swinging arm ) axles the same as the A7 ? I can get hold of one as a sample.

Frame painted, wheels ready with new spokes. So keep your fingers crossed.

Am gathering stuff for my 1961 Super Rocket which is next on the never ending list. Any idea where i can pick up spares for my 1952 Norton Inter 500 OHC. Need to start collecting spares for her now.

Will post some photos soon

Take care
Anji

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Re: 1951 BSA A7
« Reply #22 on: 03.03. 2014 12:35 »
Gee Anji, you don't mess around. Busier than a one armed wallpaper hanger.
A mate down here has a '61 SR that he bought new. Nice well sorted bikes.
Sorry can't help with the Notrun Inter bits. Anything for an Inter is almost as expensive as bits for a Manx. Good luck with it.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline wilko

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Re: 1951 BSA A7
« Reply #23 on: 03.03. 2014 22:42 »
I'd like to see an offset liner??

Offline anjimehra

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Re: 1951 BSA A7
« Reply #24 on: 04.03. 2014 11:11 »
I'd like to see an offset liner??

You wont  Wilko. What was done was to get a thicker liner centrifugally cast so that there was m/cng tolerance to shift the centre line back to where it should be. The normal liner wall thickness did not permit this. Sorry about the confusion & my inability to explain this first time around.

Take care
Anji

Offline anjimehra

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Re: 1951 BSA A7
« Reply #25 on: 04.03. 2014 11:14 »
Hi

Another poser!!

Most service manuals mention the LH con rod having a oil hole above the big end & that it should face the crank web. My A7 has both con rods with holes!!!. Any suggestions ?
Anji

Offline duTch

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Re: 1951 BSA A7
« Reply #26 on: 04.03. 2014 12:45 »

I'm sure there was a thread on that very subject just a few days ago...?
Can't remember details though, but I'm sure out was a new one so shouldn't be hard to find
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Online RichardL

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Re: 1951 BSA A7
« Reply #27 on: 04.03. 2014 14:18 »
Anji ji,

Here is the link to the last discussion on oil holes in rods.
http://www.a7a10.net/forum/index.php?topic=8089.msg56871#msg56871
There are probably 20 other strings on this topic.  Don't let the fact that I've made a lot of posts on this convince you that I'm any expert.  I just find it an interesting topic.  Anyway,  I've used up my being-wrong quota for the month.

Richard L.
Plan on signing up for the world-wide 2020 DISTINGUISHED GENTLEMAN'S RIDEon September 27, 2020 (if it's not cancelled and we are free to move about by then). Watch website at https://www.gentlemansride.com for details.

Online trevinoz

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Re: 1951 BSA A7
« Reply #28 on: 04.03. 2014 20:28 »
Didn't the late A65s have both rods drilled? But they also had larger capacity oil pumps.
It probably won't affect anything if you leave the rod as it is but if you want peace of mind you could fill the hole with an epoxy resin.

Trev.   

Online RichardL

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Re: 1951 BSA A7
« Reply #29 on: 04.03. 2014 20:43 »
I think Trev means that you could fill the hole in the right-side rod, leaving the hole in the left to do whatever is does. Correct me if I've read you wrong Trev.

Richard
Plan on signing up for the world-wide 2020 DISTINGUISHED GENTLEMAN'S RIDEon September 27, 2020 (if it's not cancelled and we are free to move about by then). Watch website at https://www.gentlemansride.com for details.