Joe,
>From a truely agrarian standpoint I'll add this to what has been said about
using old liners. It true with old tractors and it's true with our cars.
Many owners don't keep up with the coolant, or run straight water. Liners
rust and eventually pinhole from the outside in. My experience, with 8 86 MM
liners bought from someone I won't mention, is that all looked great until
they were opened up to 87MM and litttle tracks of rust quickly showed up.
Very expensive mistake. Obviously, liners taken from a running engine would
be the safest approach.
Bob Kramer
TR6, TR4A, TR4
Hill Country Triumph Club
Corinthians Vintage Auto Racing
rgk@flash.net
----- Original Message -----
From: <N197TR4@cs.com>
To: <triumphs@autox.team.net>
Sent: Thursday, December 07, 2000 2:38 PM
Subject: Agrarian Cylinder Liner Boring-Short Version
> Triumph List
>
> Subject: Boring Wet Sleeves...boring could be an exciting subject...or
bad
> joke
>
> Initially, I sent a couple messages out, privately, as I am wont to do
that
> with all of the activity on the list, and then decided that this sounded
like
> a very informamative thread. One that bears discussion among the agrarian
wet
> sleeve liner 'set'.
>
> The gist of my responses to two gentlemen, as there was some concern over
> boring existing sleeves:
>
> In 1991, I sent my 86MM liners to a Performance Machine Shop to be bored
to
> 87MM. They used the block as a fixture and charged me $18 per hole
(Midwest
> Pricing) They matched my 'off the shelf' Jahns pistons to the liners. I've
> run this engine, in anger, for 8 years with one ring change. (We have
> surpassed the 1963 Lap Record at Road America, set by Jim Spencer...I love
to
> say that, as the car is essentially set up to 1963 specifications)
>
> I KNOW, Tullius was faster in 1964.... :-)
>
> I just bored another set of liners because I found a set of NOS Hepolites
at
> 87MM .030 OS and expect to install this engine someday...current one runs
too
> good and so very reliabile.
>
> Preemptive Strike: Overheating? Let me interject...I run a stock Late
> TR3A/earlyTR4 radiator in my race car...I DO have an oil cooler. I have
never
> boiled...WATER..as we are not allowed to run coolant.
>
> Perhaps some of the more technically oriented racers or street guys have a
> few comments along with some advice to the newbie TR racers or guys who
are
> rebuilding street engines?
>
> I personally think using the old iron (not aftermarket stuff) and
machining
> to exacting standards with today's machining equipment makes sense to me.
(I
> also have somewhat of a manufacturing background)
>
> Have at it. Please come out of corner and fight cleanly...learn something
and
> have fun...I am.
>
> Joe Alexander
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