Replacing Cylinders

[Antietam Classic Cycle]

Ok, everything is here, and I'm ready to replace the cylinders, this weekend. For anyone who has used these lots, though, I have a question. Each kit comes with one totally flat compression ring, and another that has a small groove around the outside edge (see photo.) What us the purpose of this? Since each kit comes with one of each, I assume that they need to be installed a certain way, but there are no instructions. Is one of them supposed to go in the first slot, and the other in the second one? Which way does the grooved one go in? Groove up or down? Any info would be appreciated.

Check this out, it may help: http://thisoldtractor.com/mg_manuals/gilardoni_installation_instructions_2.pdf

[JC85]

Check this out, it may help: http://thisoldtractor.com/mg_manuals/gilardoni_installation_instructions_2.pdf

It does, thank you. I also meant to ask about piston orientation. In these instructions, when it mentions the V7 850 LM type engines, does that include the 850 Eldo engine?

[Antietam Classic Cycle]

It does, thank you. I also meant to ask about piston orientation. In these instructions, when it mentions the V7 850 LM type engines, does that include the 850 Eldo engine?

Yes, information pertains to the Ambassador, Eldo, T, T3 as well.

There should be an arrow and the word "scarico" or sometimes just "scar" stamped on the crown of the piston. The arrow should point towards the exhaust valve. Lacking those, just remember the intake valve is the larger of the two and needs the "pocket" that is machined into the top of piston for clearance. 

[czakky82]

I didn’t remember seeing any perceptible difference between the two compression rings when I did my T3.

[JC85]

Cylinder job was succesfully completed, last weekend! Breakdown and pictures have been added to my thread in the rebuilds and restorations section.

[Semitone]

I did the 88s on my T-3 along with much other stuff. Made for a nice engine except a bit more vibration than stock. Yes, to get the most out of it other things need to be done which can get costly. I did the following and the attached dyno run graph shows the results. It is a nice running very streetable motor.
Big block V-7 sport cam.
36mm round slide carbs.
Heads ported and polished.
K&N filters.
Heavy duty valve springs.
I just run cheap Emego Dunstall replica mufflers and they seem to flow fine.
GliderJohn

Hi GliderJohn. I’m currently doing a similar build on my T. When you say “big block V7 sport cam” are you referencing the original V7 Sport motor? Paul