Hello, ex AOMC member still has for sale :-
Good standard bore cylinder, (flanged for carb) no chips.
4 new valves.
2 new guides.
New rings.
Crank assy. fitted new Alpha. Not running true.
£80. Can deliver Kempton, Ham Street, Founders Day.
Assorted vintage 557sv parts for sale.
- simon.holyfield
- Holder of a Platinum Anorak

- Posts: 5190
- Joined: Mon Oct 17, 2011 11:16 pm
- Location: Norfolk
- Contact:
Re: Assorted vintage 557sv parts for sale.
Fixed cylinder head? Any idea what year?John Hill wrote: Thu Jun 25, 2026 7:54 am Hello, ex AOMC member still has for sale :-
Good standard bore cylinder, (flanged for carb) no chips.
4 new valves.
2 new guides.
New rings.
Crank assy. fitted new Alpha. Not running true.
£80. Can deliver Kempton, Ham Street, Founders Day.
cheers
Simes
Machine Registrar (registrar@arielownersmcc.com)
'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'30 Model A
https://ariel-square-four.blogspot.com
Simes
Machine Registrar (registrar@arielownersmcc.com)
'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'30 Model A
https://ariel-square-four.blogspot.com
Re: Assorted vintage 557sv parts for sale.
Hello Simon,
Yes, the cylinder has a fixed head. As it has a flange & studs for carburettor mounting it will be after 1927. It has a good standard bore & no fin chips. The guides are good, but a new set & valves here too, good quality issued by A.o.m.c.
Regards, John.
Yes, the cylinder has a fixed head. As it has a flange & studs for carburettor mounting it will be after 1927. It has a good standard bore & no fin chips. The guides are good, but a new set & valves here too, good quality issued by A.o.m.c.
Regards, John.
- simon.holyfield
- Holder of a Platinum Anorak

- Posts: 5190
- Joined: Mon Oct 17, 2011 11:16 pm
- Location: Norfolk
- Contact:
Re: Assorted vintage 557sv parts for sale.
I'd like those please John. I'll pm you.John Hill wrote: Fri Jun 26, 2026 9:04 am Hello Simon,
Yes, the cylinder has a fixed head. As it has a flange & studs for carburettor mounting it will be after 1927. It has a good standard bore & no fin chips. The guides are good, but a new set & valves here too, good quality issued by A.o.m.c.
Regards, John.
cheers
Simes
Machine Registrar (registrar@arielownersmcc.com)
'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'30 Model A
https://ariel-square-four.blogspot.com
Simes
Machine Registrar (registrar@arielownersmcc.com)
'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'30 Model A
https://ariel-square-four.blogspot.com
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