[TR] 57 TR3 compression test results

[Jeremiah Curry]

The head was rebuilt about 1,000 miles ago with hardened valve seats, new 
valves etc.  There were cracks in the head that were fixed at the same time.

I tried adjusting the valve clearance...which was a little off, but if 
anything the compression went down a little.  Too bad, that would have been 
a nice easy fix.

-----Original Message----- 
From: greg at gelhar.com
Sent: Monday, June 17, 2013 10:35 PM
To: Jeremiah Curry
Cc: Triumph Discussion
Subject: Re: [TR] 57 TR3 compression test results

When is the last time the valve clearance was adjusted? A worn valve seat
can reduce the .010 clearance at the valve rocker.

Greg G.
Osseo, MN


> So for quite a while my 57 TR3 hasnbt run quite right.  It overheated and
> had low oil pressure when I drove it from my old house to my new one; blew
> the
> headgasket.  Well, I replaced the headgasked about a year back and it
> drives,
> but I have a lot of fumes coming our the valve cover and it sounds like
> there
> is a knock.  Today I got around to compression testing it and here are the
> results:
>
> 1. (front) 70
>
> 2. 150
>
> 3. 160
>
> 4. 160
>
>
>
> So I guess the next step is to drop the oil pan and take out that piston?
>
>
>
> thanks,
>
> Jeremiah