Author Topic: A10 RGS alloy cilinderhead  (Read 2075 times)

Offline Marc12

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A10 RGS alloy cilinderhead
« on: 20.11. 2014 21:37 »
Can somebody help me with the following: I have an aluminium cilinder head with dual ports (2 carb.). and the following numbers 671106 and J54- AM and RR. Is this a cilinder head of a RGS goldstar replica??

Online chaterlea25

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Re: A10 RGS alloy cilinderhead
« Reply #1 on: 20.11. 2014 21:56 »
Hi Marc
Welcome to the forum ,
This link may help http://atlanticgreen.com/a10dph.htm

John
1961 Super Rocket
1963 RGS (ongoing)

Offline muskrat

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Re: A10 RGS alloy cilinderhead
« Reply #2 on: 21.11. 2014 08:58 »
Please correct me if I'm wrong but the heads with the bolt on manifold were called twin carb heads when you used the twin carb manifolds. The unit A50/65's had bolt on manifolds for single carb and splayed ports for twin carbs.
Cheers.
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline Marc12

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Re: A10 RGS alloy cilinderhead
« Reply #3 on: 21.11. 2014 18:01 »
It is still not clear for me. I added a picture Marc

Offline Marc12

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Re: A10 RGS alloy cilinderhead
« Reply #4 on: 21.11. 2014 18:18 »
another picture, Marc

Offline muskrat

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Re: A10 RGS alloy cilinderhead
« Reply #5 on: 21.11. 2014 18:44 »
OK Marc you have a standard (don't think many would call them standard) bolt on manifold/twin carb head. The bottom picture on the atlanticgreen site. Someone has made their own adapter/manifold to take the twin concentrics.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline Marc12

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Re: A10 RGS alloy cilinderhead
« Reply #6 on: 21.11. 2014 18:52 »
Thanks, so it is not a a10 rgs cilinderhead. Does it have any value??

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Re: A10 RGS alloy cilinderhead
« Reply #7 on: 21.11. 2014 19:01 »
The RGS had a normal cast (single carb) manifold head. Your head would be of the batch that was made for the American racing market.
No it's worth nothing, I'll take it  >:D;). The last one I saw on Ebay went for $500 US I think.
If you are building an RGS replica/lookalike, that head would give it that bit more bling.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline Marc12

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Re: A10 RGS alloy cilinderhead
« Reply #8 on: 21.11. 2014 19:27 »
Thanks, the head was on a engine with the following number DA1010863 RGS see picture. I cannot place this number. Is this RGS or??  Marc

Online chaterlea25

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Re: A10 RGS alloy cilinderhead
« Reply #9 on: 21.11. 2014 20:11 »
Hi Marc,
Those cases have been re stamped by someone  *sad2* *sad2*
BSA did not put "RGS" on the engine, someones "flight of fancy"  ??

RGS models are identified by  the frame  and used Super Rocket engines.
These have a D A10 R ***** numbers with usually a smaller HHC nearby

John
1961 Super Rocket
1963 RGS (ongoing)

Offline muskrat

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Re: A10 RGS alloy cilinderhead
« Reply #10 on: 21.11. 2014 20:15 »
The plot thickens! Looks like a re-stamp by a previous owner. To my knowledge no motor was stamped RGS at the factory. The 10863 should be stamped where the RGS is. To the unknowing that would seem like the find of the century.
Cheers
John beat me.
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Online Beeza

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Re: A10 RGS alloy cilinderhead
« Reply #11 on: 21.11. 2014 23:03 »
Sorry about this being my first post, but I couldn't help to add this, it is mine and I have taken the GPs and head off and gone for the single mono.
Hope the photo posting works fingers crossed
Cheers Thomas

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Re: A10 RGS alloy cilinderhead
« Reply #12 on: 22.11. 2014 01:41 »
G'day Beeza  *welcome*.
Very nice looking bike mate. The single mono would be a lit easier to live with on the road. You could have just got a manifold to bolt on instead of changing heads.
Now get over to Bikes, Pictures & Members and give us an intro. We're an inquisitive bunch.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Online trevinoz

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Re: A10 RGS alloy cilinderhead
« Reply #13 on: 28.11. 2014 05:27 »
Marc,
                 The head is a 1954 Road Rocket type, the date is J54, not sure which month the "J" denotes.
Would have originally have had a manifold 67-1112 on it.

Trev.

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Re: A10 RGS alloy cilinderhead
« Reply #14 on: 30.11. 2014 10:55 »
Marc,
some more pics of the carbs and manifolds. The carbs are what was used on the first of the a65 spitfires and was an option to be sold with the a10 twin carb accessory kit by, I believe some US dealers. Anyhow jetting and timing requires some patience and finding a good set is a miracle.