If .040 pistons are the factory recommended oversize pistons, then a rebored
86 mm liner would be right about 87 mm (1 mm = .040, approximately).
Therefore, I suggest that the factory approved this boring procedure (no
pun intended).
----- Original Message -----
From: "Steven Newell" <steven@cravetechnology.com>
To: <Twistblts@aol.com>; "Triumph" <triumphs@autox.team.net>
Sent: Thursday, December 07, 2000 12:21 PM
Subject: Re: TR4 cylinder liners
> The thinner walls of the bored liner may contribute to overheating issues
> slightly. While it'll cost slightly less to bore the old liners, it's
likely a
> false
> economy. The 87mm liners are engineered for 87mm pistons, get a
> matched set.
|