• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
  • When posting a classified ad, you MUST select a prefix from the drop-down next to the subject line. If you don't you will get an error and your ad will not be posted!
Tips
Tips

MK III pistons and rings

Share this page

hymodyne

hymodyne

Senior Member
Offline
I've torn down the engine of my'72 MK III and sent the block, head and crank off to the machine shop to be inspected and cleaned. When I took out the pistons, they were flat topped, not domed, and they had two small vents below the oil ring on each side of the piston. These are MK III pistons aren't they? I'm asking before I buy the wrong rings.

hym
 
I'm assuming this is a GT6? original engine? If so, it should be the block with the recessed bores and lower compression (engine serial number ending in "UE"), so I'd expect flat-top pistons. I'm not sure that would matter regarding rings, as the 2.0L engines all had the same bore. Domed pistons were fitted to this engine only for markets OTHER than the US, near as I can tell (and according to the Canley Classics and Spit Bits web sites).
 
Hymodyne,

I got a set of new "County" brand .20 over flat-top pistons from James Paddock, Ltd. in the UK for about $200.00 U.S. You might want to check the current exchange rate. I bought them about a year ago @ $1.50 to the Pound. I seem to recall that they had the domed pistons available as well.

I also bought a new oil pump, rings, bearings, etc. at prices that were better tha here, including shipping. My secondary choice would be BPNW.

-Bob
 
Back
Top