Author Topic: Bottom end conversion JB Conversions Cumbria  (Read 4997 times)

Offline nigeldtr

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Bottom end conversion JB Conversions Cumbria
« on: 21.11. 2009 11:15 »
Hi,

Does anyone have any experience with JB Conversions of Cumbria? I am interested in buyiing an A10 and the bottom end has been converted to roller bearings. I know of SRM but not JB conversions?

Thanks

Nigel
1951 Golden Flash (engine now rebuilt) 1953 M21 a pain to start and 1961 GF that is turning into a black hole!

Offline rocket man

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #1 on: 21.11. 2009 12:30 »
how meny miles has it done on the conversion it might be worth finding out srm say there conversion is good for 150 thousand plus
its a good conversion as it does away with the plain bush and has it got an oil end feed  in the end of the crank srm do the devimead conversion
which also involves altering the oil ways and also they use a  special duel bearing needle and ball ive had the srm conversion with no problems and my conrods
get extra oil


dave
 

Offline nigeldtr

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #2 on: 21.11. 2009 13:30 »
Hi Dave,

I have been told its done 50 miles - complete rebuild and that it has oil end feed to the crank.

Regards


Nigel
1951 Golden Flash (engine now rebuilt) 1953 M21 a pain to start and 1961 GF that is turning into a black hole!

Offline rocket man

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #3 on: 21.11. 2009 13:58 »
you shouldn't have any probs then Nigel  



dave

Offline Rusty nuts

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #4 on: 21.11. 2009 22:12 »
you shouldn't have any probs then Nigel  

Unless they are in Cockermouth *doh*
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Offline nigeldtr

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I have looked around but I ca't seem to find anything apart from JB Restoations in Cumbria - anyone any experience here?
1951 Golden Flash (engine now rebuilt) 1953 M21 a pain to start and 1961 GF that is turning into a black hole!

Offline riflegreen

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #6 on: 22.11. 2009 08:51 »
I've bought various bits for JB Restorations from e-bay , good quality parts . Specalise in BSA parts .

Don't know anything about their bottom end conversion though .

Chris

Offline riflegreen

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #7 on: 22.11. 2009 08:56 »
Forgot to say , this is their e-bay seller name jb_rest.1229 .

Might be worthwhilw contacting them via e-bay & asking them about their conversion .

Chris

Offline bsaketcase650

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #8 on: 22.11. 2009 13:41 »
Hi,

JB Restorations are known to me and have done work for me in the past. Their speciality are pre-unit gearboxes. I have found the chap who runs the company very helpful and his work is of a high standard. Can't recall what his name is. JB restorations were recommended to me by C & D Autos so I guess he has a good reputation. I do recall having a conversation with him about end feed conversions and from what I recall he has a contact in the Newcastle who carries out this work.

Regards

Simon

Offline Mosin

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #9 on: 23.11. 2009 12:23 »
I am very interested in JB Conversions. I live in West Cumbria and thought that I was aware of everyone involved with old BSAs accross the county and yet I have never even heard of them! A Google search has not thrown anything up, so if anyone has any information as to which town they are in would be very helpful so I can pay them a visit (providing they are not on the other side of the Derwent as it's a bit tricky getting over there this week)!

Simon

1960 A7 Shooting Star
1959 D3 Bantam
1994 Triumph Trident 900

North West England

Offline bsaketcase650

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #10 on: 23.11. 2009 19:09 »
J B Restorations
Windy Hill,
21a Ann Street
Dalton-in-Furness
Cumbria, LA15 8BG

Hope this helps.

Simon

Offline A10Boy

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #11 on: 24.11. 2009 20:40 »
JB Restorations are to be found at the bigger Uk classic bike shows, Stafford etc.

Regards

Andy

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Offline Mosin

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #12 on: 03.02. 2010 11:59 »
I'm just wondering if anyone can feed back any experiences about JB Conversions? I am considering talking to them about my current bottom end woes. OR possibly just biting the bullet and getting SRM to do it. Does anyone have a ball park figure of how much I could be expecting to pay for such a job?

Simon
1960 A7 Shooting Star
1959 D3 Bantam
1994 Triumph Trident 900

North West England

Offline rocket man

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #13 on: 03.02. 2010 19:44 »
heres srm price.

service Code  Service Name    Cost (ex. VAT)

SRMNR3    Needle Roller Bearing Conversion A7 A10    Â£413.44

   

Offline coater87

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Re: Bottom end conversion JB Conversions Cumbria
« Reply #14 on: 04.02. 2010 01:20 »
 Thats cheap.

 Problem is here in the states, the one guy I knew of who did this messed up a few times (too many)- and wants $1100.00 dollars.

 Shipping to U.K. is not cheap either.

 We in the states need a place that does this well.

 Lee
Central Wisconsin in the U.S.