Author Topic: worn out old bore post  (Read 571 times)

Offline edboy

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worn out old bore post
« on: 19.11. 2015 21:07 »
hi to all those in the know. for my later on a7 project i m looking at engine repairs and have found my a1 condition big fin barrels on a worn +60. there is loads of meat left and would probably take std a10 pistons but are there any 68mm pistons that will fit or any dealer offering +80 shooting star pistons?

Online chaterlea25

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Re: worn out old bore post
« Reply #1 on: 19.11. 2015 23:13 »
Hi,
I dont know about +.080's but C15's are 67 mm as far as I know also triumph 500 unit twins??

????
John
1961 Super Rocket
1963 RGS (ongoing)

Online terryg

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Re: worn out old bore post
« Reply #2 on: 20.11. 2015 00:45 »
Worn out old bore?

Eddie, has my wife been talking about me again?

ATB

Terry
Terry
'57 'SR', '59 SR, '63 RGS

Offline Klaus

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Re: worn out old bore post
« Reply #3 on: 20.11. 2015 07:25 »
Hi edboy,

have alook at here:

http://vintagemotorcyclepistons.co.uk/epages/1f6dc7d5-163a-44dd-ab8f-26d48061f44f.sf/en_GB/?ObjectID=3897274

cheers Klaus



in addition,

there also 8" Pistons for A10 with 7,25 compression ratio.
PartNo 11062 +0.08


If you think, everything is under control, you are not fast enought.

Offline edboy

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Re: worn out old bore post
« Reply #4 on: 20.11. 2015 18:04 »
thanks for all replies and the heads up klauss. the part number is correct. i ve emailed for more information regarding price, correct size -68mm, and manufacturer.
terry i m sure your wife is lovely and you didnt make the same mistake as me by marrying a 25 years your junior, bimbo and nymphomaniac.
regards eddie

Online RichardL

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Re: worn out old bore post
« Reply #5 on: 20.11. 2015 21:54 »
i m sure your wife is lovely and you didnt make the same mistake as me by marrying a 25 years your junior, bimbo and nymphomaniac.
regards eddie

I'm confused. *conf*
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Online terryg

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Re: worn out old bore post
« Reply #6 on: 20.11. 2015 23:01 »
Richard - sorry for the thread drift but it's what we attempt to pass off as 'humour' here to the west of London.

Eddie - if only I'd had your foresight and good fortune.
Terry
'57 'SR', '59 SR, '63 RGS

Offline Tomcat

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Re: worn out old bore post
« Reply #7 on: 21.11. 2015 06:51 »

terry i m sure your wife is lovely and you didnt make the same mistake as me by marrying a 25 years your junior, bimbo and nymphomaniac.




Yep, same as my wife, except her dad owns a brewery
'48 A7 '59 SR '74 850 Commando TDM900

Online Triton Thrasher

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Re: worn out old bore post
« Reply #8 on: 21.11. 2015 11:04 »
a 25 years your junior, bimbo and nymphomaniac.


Can't imagine what you saw in her.

Online muskrat

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Re: worn out old bore post
« Reply #9 on: 21.11. 2015 18:59 »
G'day Ed.
Notrun 600 and 650 twins use 68mm bore as standard but I don't know if the crown height or pin size are the same. A handy chart   http://www.britcycle.com/products/Pistons_Rings.pdf
Cheers
'51 A7 plunger, '57 A7SS now A10CR, '76 XT500, '77 AG175 '83 CB1100F, '81 CB900F project.
Australia
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Offline edboy

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Re: worn out old bore post
« Reply #10 on: 23.11. 2015 21:49 »
unfortunately norton pistons have offset valve recess to the gudgeon pin. the motorcycle piston company can supply 68mm to order for an a7 so once i am flush i ll make the call. well done klaus.