803cc piston rings

A place for new members to introduce themselves and say hello.

803cc piston rings

Postby 16Cabulrd » Wed Feb 01, 2017 2:18 pm

my 803cc engine is stamped with a diamond shape containing a figure 3 on each piston and adjacent block. I presume these are standard size as I believe they would be stamped +20, +30 Etc. am I correct? Also I have found it impossible to locate a set of standard rings for the 803, any assistance in obtaining same would be much appreciated.
16Cabulrd
 
Posts: 16
Joined: Sat Jan 28, 2017 5:47 pm

Re: 803cc piston rings

Postby A40FARINAGURU » Wed Feb 01, 2017 6:13 pm

16Cabulrd wrote:my 803cc engine is stamped with a diamond shape containing a figure 3 on each piston and adjacent block. I presume these are standard size as I believe they would be stamped +20, +30 Etc. am I correct? Also I have found it impossible to locate a set of standard rings for the 803, any assistance in obtaining same would be much appreciated.

they are original 'MOWOG' pistons, the number in the diamond denotes the grade which is should also be marked on the top face of the block, basically the factory matched the pistons to the block, there are also grade 2 etc
Nick Bayliss DVLA Officer A30/A35 owners club
Connected with A30/A35's for 57 years

Email dvla@austina30a35ownersclub.co.uk
A30/A35 Member A1372 (since 1981)
User avatar
A40FARINAGURU
 
Posts: 12923
Joined: Tue Mar 30, 2010 7:14 am
Location: West Midlands (Home of the Austin)

Re: 803cc piston rings

Postby Neil Evans » Wed Feb 01, 2017 8:47 pm

A40FARINAGURU wrote:they are original 'MOWOG' pistons, the number in the diamond denotes the grade which is should also be marked on the top face of the block, basically the factory matched the pistons to the block, there are also grade 2 etc


So they could be oversize if the engine has had a factory 'gold seal' rebuild?

Has the engine still got its engine number tag fitted?
Technical Information Officer
Father of the club's only love child (probably)
A30/A35 Club Member A191 (since 1972)
User avatar
Neil Evans
 
Posts: 9960
Joined: Tue Apr 15, 2008 12:06 am
Location: Boston, Lincolnshire

Re: 803cc piston rings

Postby A40FARINAGURU » Wed Feb 01, 2017 8:56 pm

Neil Evans wrote:
A40FARINAGURU wrote:they are original 'MOWOG' pistons, the number in the diamond denotes the grade which is should also be marked on the top face of the block, basically the factory matched the pistons to the block, there are also grade 2 etc


So they could be oversize if the engine has had a factory 'gold seal' rebuild?

Has the engine still got its engine number tag fitted?

Gold Seal were marked with the oversize :thumbs:
Nick Bayliss DVLA Officer A30/A35 owners club
Connected with A30/A35's for 57 years

Email dvla@austina30a35ownersclub.co.uk
A30/A35 Member A1372 (since 1981)
User avatar
A40FARINAGURU
 
Posts: 12923
Joined: Tue Mar 30, 2010 7:14 am
Location: West Midlands (Home of the Austin)

Re: 803cc piston rings

Postby gazza82 » Wed Feb 01, 2017 11:02 pm

My A35s 948 is a goldseal and I remember seeing an oversize mark on pistons when we decoked it.

Can't remember if they were plus .010 or .020 though.
"If you're driving on the edge ... you're leaving too much room!"

Member no. A2607. [WebEditor]

Cars: Subaru BRZ SE LUX Auto, "Project 757" '58 A35 2-door (in storage) - plus "family fleet" - Alfa MiTo, Peugeot 206, Renault Clio (Ex '98 Alfa Romeo 156 2.0 TS)
User avatar
gazza82
Site Admin
 
Posts: 2395
Joined: Sun Nov 24, 2013 3:39 pm
Location: Buckinghamshire

Re: 803cc piston rings

Postby Paulc » Wed Feb 01, 2017 11:36 pm

The club sells +020/030/040 803cc rings for £12 a set. If you want standard rings ESM sell them for £90.

http://www.morrisminorspares.com/engine ... 40-p830463
Paulc
 
Posts: 1461
Joined: Mon Apr 14, 2008 4:58 pm
Location: London or Hampshire

Re: 803cc piston rings

Postby lunnmax » Tue Feb 07, 2017 5:26 pm

16Cabulrd wrote:my 803cc engine is stamped with a diamond shape containing a figure 3 on each piston and adjacent block. I presume these are standard size as I believe they would be stamped +20, +30 Etc. am I correct? Also I have found it impossible to locate a set of standard rings for the 803, any assistance in obtaining same would be much appreciated.

I will check my stocks.. I have rings , piston sets and bearings.


Sent from my SM-N910F using Tapatalk
lunnmax
 
Posts: 6
Joined: Mon Oct 27, 2014 6:18 pm
Location: Ramsgate

Re: 803cc piston rings

Postby lunnmax » Tue Feb 07, 2017 5:34 pm

16Cabulrd wrote:my 803cc engine is stamped with a diamond shape containing a figure 3 on each piston and adjacent block. I presume these are standard size as I believe they would be stamped +20, +30 Etc. am I correct? Also I have found it impossible to locate a set of standard rings for the 803, any assistance in obtaining same would be much appreciated.

I have Std rings complete in original box (Hepolite) as well as full piston sets with rings at +20, +30 and +60 let me know what you might need.

Sent from my SM-N910F using Tapatalk
lunnmax
 
Posts: 6
Joined: Mon Oct 27, 2014 6:18 pm
Location: Ramsgate

Re: 803cc piston rings

Postby 16Cabulrd » Wed Feb 15, 2017 9:23 am

Thanks for reply, sorry for delay in answering, My pistons have 3 rings plus oil control ring. If these are the ones you have please advise cost for the standard., thanks, Terry,
16Cabulrd
 
Posts: 16
Joined: Sat Jan 28, 2017 5:47 pm


Return to Welcome to the forum

Who is online

Users browsing this forum: No registered users and 1 guest