Author Topic: Post big bang - Whitsend A10  (Read 3780 times)

Offline charles whitfield

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Re: Post big bang - Whitsend A10
« Reply #30 on: 18.05. 2014 21:01 »
Well, whatever it is, it shouldn't have been in my eckin oil tank!!!!!!!!!!!!
I think i have found the problem

Offline muskrat

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Re: Post big bang - Whitsend A10
« Reply #31 on: 18.05. 2014 21:06 »
Yep, we call'em welsh plugs down here. It shouldn't be inside your motor.
I'll take a guess, It was behind the sludge trap screw?
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline charles whitfield

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Re: Post big bang - Whitsend A10
« Reply #32 on: 18.05. 2014 21:17 »
Well no - it was in the bottom of my oil tank!! - it must have been re-invigorated with the last oil change and covered the oil feed   
I have a small journal with no gubbins behind - ???????
But how the heck it got there God knows - I swear I flushed it all out on the rebuild

Offline muskrat

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'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
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Offline ShaunMac

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Re: Post big bang - Whitsend A10
« Reply #34 on: 18.05. 2014 21:25 »
Wow....I only had sludge and a few bits of metal in my tank!
61 Super Rocket swing-arm

Offline charles whitfield

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Re: Post big bang - Whitsend A10
« Reply #35 on: 18.05. 2014 21:27 »
Well, actually yes it does - But............Oh no, good call, I thought it was sussed
More sleepless nights!

Online chaterlea25

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Re: Post big bang - Whitsend A10
« Reply #36 on: 18.05. 2014 21:31 »
Hi Charles,
It looks like the sealing plug from an oil tin??

I'm really surprised that there are three threads going on at the same time and all three share the sludged up oil tank syndrome ???

Maybe I'm paranoid but I wash out the oiltank at every oilchange and have added a drain plug to the tank bottom to aid in this
Theres a photo of my tank drain setup in this thread
http://www.a7a10.net/forum/index.php?topic=1274.msg9205#msg9205

HTH
John
1961 Super Rocket
1963 RGS (ongoing)

Offline charles whitfield

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Re: Post big bang - Whitsend A10
« Reply #37 on: 18.05. 2014 21:50 »
Excellent - I will fit one before it runs again
Thanks

Offline charles whitfield

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Re: Post big bang - Whitsend A10
« Reply #38 on: 09.06. 2014 19:56 »
Help with a judgement call guys please
Is only perfection acceptable for the surface of the big end journals?
In the mash up, I have had one shell, ermmm clattered, and one with a few marks - big issue, they are -40 already
If I run my fingernail over the journals there are some 2 to 4 thou 'ish'scores
Given I can sort the oil pressure issue, do I need the regrind? - Feels very final
Cheers
Charles     

Offline charles whitfield

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Re: Post big bang - Whitsend A10
« Reply #39 on: 09.06. 2014 20:33 »
Errrrrmm, anyone know why the drive side big end journal would have a bigger oil feed hole than the timing side?
Sorry all - Been on a course today and been told to address my positive mental attitude.
Well. definitely , I am positive it is broken
Cheers
Charles   

Offline muskrat

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Re: Post big bang - Whitsend A10
« Reply #40 on: 09.06. 2014 20:51 »
G'day Charles. In a perfect world it would need doing. If it's only light scoring, give the journals a good polish and measure them. 1.421"-1.420" is great, 1.419" is just OK. Any less and it's bodge time.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline charles whitfield

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Re: Post big bang - Whitsend A10
« Reply #41 on: 09.06. 2014 21:22 »
Hi Muskrat
Thanks, its a small journal and according to big mike reads 1.223 inch
Inspired I have been and given it a polish - It looks fine and the marks were much less than 2 thou
I owe you a Welsh beer now
Cheers
Charles 

Offline charles whitfield

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Re: Post big bang - Whitsend A10
« Reply #42 on: 09.06. 2014 21:53 »
Many thanks indeed Muskrat
Here it is all smooth and shiny
Cheers
Charles

Offline trevinoz

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Re: Post big bang - Whitsend A10
« Reply #43 on: 09.06. 2014 21:59 »
It looks like that crank has been dynamically balanced , Charles.

Trev.

Offline charles whitfield

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Re: Post big bang - Whitsend A10
« Reply #44 on: 09.06. 2014 22:14 »
Hi Trev
Well spotted - Yes it has, it had a full on SRM bottom end re-furb
Before, it shook all the blood out of my arms and made my eyes blur at about 60mph
Much better after, and when I spotted the bottom mounting bolt had still shaken itself out - perfect!
Cheers
Charles