triumphs
[Top] [All Lists]

Re: Herald Compression

To: "Adrian Dix-Dyer" <dixie4@wales.freeserve.co.uk>
Subject: Re: Herald Compression
From: "Scott A. Roberts" <herald1200@home.com>
Date: Sat, 20 Jan 2001 09:12:52 -0500
Cc: <triumphs@autox.team.net>
References: <010c01c082a8$739d9e40$36cc0818@Roberts.adubn1.nj.home.com> <001e01c082da$86587780$70c5893e@platinum>
Thanks Adrian, That sounds like a plausible explanation. I am planning to
put a Spitfire head on it, so I will probably wait and have that head redone
with the  unleaded conversion(although I have never held much stock in the
unleaded valve recession theory)

I am planning on doing some "running exercises" today, so hopefully it will
clear up as suggested.

An aside to all the listers who have responded so far- THANKS! I am still
interested in more ideas, suggestions, etc.

Scott
64 Herald 1200 CV that runs now :)


----- Original Message -----
From: "Adrian Dix-Dyer" <dixie4@wales.freeserve.co.uk>
To: "Scott A. Roberts" <herald1200@home.com>; <triumphs@autox.team.net>
Sent: Saturday, January 20, 2001 7:14 AM
Subject: Re: Herald Compression


>
> Here is a stab at what I think your problem may be for what it is worth.
>
> You say that your engine has stood idle for a number of years. It is quite
> possible that one of the valves on number two piston was left in the open
> position while standing. If so a build up of rust on the valve seat would
be
> a possibility. Dependant on how severe this rusting is will decide what to
> do next. Give the engine a good rev or if possible a good run on the road
> and try the compressions again. If there is no improvement then as another
> lister stated it may be a burnt valve or a badly pitted seat. Have you
> converted to hardened exhaust valve seats and stainless steel valves to
run
> unleaded? If not now is the time to do it. You do not need to do the
inlets
> unless they are worn to excess. Just recut the inlet seats, reface the
> valves and lap them in by hand.
>
>  Regards
> Adrian
> TR4A CT64306 O

<Prev in Thread] Current Thread [Next in Thread>