Author Topic: Baffled, confused and covered in oil!!!!!!  (Read 2674 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....)
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 1473
  • Karma: 12
Re: Baffled, confused and covered in oil!!!!!!
« Reply #75 on: 29.04. 2020 21:54 »
G'day JulianS & bb.
Thanks for putting my "random thought" to bed. I learn something every day.
Cheers

Here is a good thread on the A65 and A10 oil pump differences, and the worm gear differences, I see Julians statement above the pump rotates the same way as the A10 so this really does my head in  *pull hair out*

Possibly going off topic here tho  *shh*

https://www.a7a10.net/forum/index.php?topic=5829.msg92030#msg92030
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)

Online ironhead

  • A's Best Friend
  • ***
  • Join Date: Feb 2019
  • Posts: 173
  • Karma: 0
Re: Baffled, confused and covered in oil!!!!!!
« Reply #76 on: 30.04. 2020 00:56 »
Hi.
Iv'e been following this post with interest & don't think Iv'e seen mentioned the anti- siphon ball & spring & cap screw thats fitted from the inside of the crankcase.  Is It there?  If not, this could explain a massive over feed of oil. The engine won't seize as the crankshaft will have plenty of "splash' lube. 
Just a thought.
SA

Offline bikerboy

  • Valued Contributor
  • ****
  • Join Date: Dec 2011
  • Posts: 363
  • Karma: 4
Re: Baffled, confused and covered in oil!!!!!!
« Reply #77 on: 01.05. 2020 22:32 »
Yes its there, it still wet sumps mind but for the minute I have fitted a tap in the oil line to avoid that happening while I sort this problem out. I have prodded that from the oil pump end in case the spring had broken or something else bizzare and its in there and springing back even if its not much of a seal. I would do the A65 type mod if I knew how long the spring should be but I have never seen anybody that knows for sure so will not risk starving the crank of oil by guessing at a spring length.

I did have an anti wet sumping valve in but suspected that might be effecting it so temporarily I fitted a standard tap, if I manage to fix the problem I will invest in one of those taps that stops it starting if its not switched on but I am not willing to spend another £50 on it yet in case I do decide to set the damned thing alight :)

Online ironhead

  • A's Best Friend
  • ***
  • Join Date: Feb 2019
  • Posts: 173
  • Karma: 0
Re: Baffled, confused and covered in oil!!!!!!
« Reply #78 on: 02.05. 2020 00:44 »
Maybe time to 'bite the bullet'  & strip the cases to check the pick-up tube as others have suggested. You seem to have covered
 & re-covered everything else in the oil system.  You've mentioned a couple of times there was too much oil in the sump when drained after a ride but have a healthy return flow. ( How much ? 1/2 liter , 1 liter? ) Tends to indicate the sump is filling to a higher level than its supposed to.

SA

Online RDfella

  • Resident Legend
  • *****
  • Join Date: Aug 2017
  • Posts: 893
  • Karma: 8
Re: Baffled, confused and covered in oil!!!!!!
« Reply #79 on: 02.05. 2020 13:07 »
This posting now runs to 6 pages with a member tearing his hair out trying to diagnose a BSA A series lubrication problem. And how many similar posts have there been? Wasn’t that long ago I was in a similar situation with my own GF (for the 2nd time). I just don’t get why this model’s lubrication system should be so uniquely unreliable. The singles aren’t, nor indeed any other engine I can recall – and I’ve worked on a few over the last 55+yrs – and a wide range too. Only failure I remember was on a TE20 Ferguson, where the oil pump gear fell off. Stupid design, a gear of around 3” dia just pressed onto the pump’s ½” shaft. Next one I pinned and it’s still going 50yrs later. Certainly takes the shine off owning a BSA twin.
'49 B31, '49 M21, '53 DOT, '58 Flash, '00 Firestorm, Weslake sprint bike.

Offline bikerboy

  • Valued Contributor
  • ****
  • Join Date: Dec 2011
  • Posts: 363
  • Karma: 4
Re: Baffled, confused and covered in oil!!!!!!
« Reply #80 on: 02.05. 2020 14:33 »
You've mentioned a couple of times there was too much oil in the sump when drained after a ride

Thats only been after leaving it a while I have never ridden it let it cool and then taken the sump off its always been a few days/weeks later

Offline chaterlea25

  • Wise & Enlightened
  • *
  • Join Date: Jun 2009
  • Posts: 3283
  • Karma: 47
Re: Baffled, confused and covered in oil!!!!!!
« Reply #81 on: 02.05. 2020 23:34 »
Hi bikerboy,

Quote
I would do the A65 type mod if I knew how long the spring should be but I have never seen anybody that knows for sure so will not risk starving the crank of oil by guessing at a spring length.

I posted the information and photos of the mod a while ago

https://www.a7a10.net/forum/index.php?topic=13668.msg111568;topicseen#msg111568

John
1961 Super Rocket
1963 RGS (ongoing)

Offline bikerboy

  • Valued Contributor
  • ****
  • Join Date: Dec 2011
  • Posts: 363
  • Karma: 4
Re: Baffled, confused and covered in oil!!!!!!
« Reply #82 on: 03.05. 2020 00:58 »
John

Thanks very much for that info if I have to strip the cases down I will do that for sure :)

Online berger

  • Wise & Enlightened
  • *
  • Join Date: Nov 2017
  • Posts: 1191
  • Karma: 7
  • keith.chesterfield uk 500sscafe.norbsa project
Re: Baffled, confused and covered in oil!!!!!!
« Reply #83 on: 03.05. 2020 10:24 »
john very good!! the berger build is getting the conversion as well as an oil drilling for a pressure gauge, it might end up with a dashboard like a mk1 capri gtlxr *lol*