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re: TR liner/piston worry

To: "triumphs@autox.team.net" <triumphs@autox.team.net>
Subject: re: TR liner/piston worry
From: Doug Hamilton <douglasehamilton@shaw.ca>
Date: Mon, 18 Mar 2002 14:08:55 -0700
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:0.9.4) Gecko/20011128 Netscape6/6.2.1
I'm sure someone will correct me if I'm wrong but weren't all Vangard motors 
85mm bore, I thought the 83mm was a down size to allow racing the TR's in the 
under 2.0 liter classes.

Doug Hamilton
1960 Triumph TR3A
1963 Fiat Cabriolet

Date: Mon, 18 Mar 2002 18:16:27 +0000
From: jgillis <jgillis@tcd.ie>
Subject: TR liner/piston worry

While reading Roger Williams new book on the TR4 I noted a comment 
he made about four ring pistons: " you should treat with suspicion any 
83mm pistons you are offered at an autojumble, for example, since they 
are likely to be ex-MOD Standard Vanguard equipment. In particular, watch 
out for and avoid any 4-ring pistons, as these will almost certainly be 
Vanguard low-technology gear....". This worries me as my project TR2 
engine was fitted with a set of liners and pistons in very good order, which 
were 83mm, which I wanted, and both liners and pistons were marked 
AE. The pistons are 4-ring, but one ring is near the bottom of the piston. 
The diagrams I have seen of Vanguard pistons has all 4 rings at the top. 
Should I discard my set?, are these Vanguard items?, or does anyone 
know where they may have come from. There seems be too little wear in 
comparison to the rest of the engine, crank etc for them to be the original 
items. All wisdom welcome
John
1954 TR2

John Gillis
1954 TR2
1972 Triumph T100 P

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