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Re: Help for vintage car

To: "Jack W. Drews" <>, <>
Subject: Re: Help for vintage car
From: "Phil Ethier" <>
Date: Sun, 26 Mar 2000 22:01:20 -0600
I'm crossposting this to

-----Original Message-----
From: Jack W. Drews <>
To: <>
Date: Sunday, March 26, 2000 7:45 PM
Subject: Help for vintage car

>Please forgive me if this is the wrong list for this question, and if
>so, please direct me to the proper place.

Try and

The subscription method is the same as you used for shop-talk.

>I work on vintage race cars, and they are usually either nearly perfect
>or nearly disasters, either of which is easily diagnosed. I have a
>regarding a car that is neither -- it is somewhere inbetween, and maybe
>somone can give me some helpful advice.
>A friend has a 1950 Riley that received a ground-up restoration 15 years
>It has been driven about 500 miles a year since. It runs okay but leaves
>a continuous trail of blue smoke from the tailpipe. I'm trying to help
>my friend
>determine what is wrong and what needs to be done.
>Here's what I've checked so far:
>Timing and carburetor mixture are proper.
>Compression readings are 120 on all four cylinders
>Leakdown is about 15% on all cylinders.
>When accelerated, and then throttle closed, smoke does not increase when
>throttle is closed, usually indicating that valve guides are okay.
>Questions: Would the leakdown rate indicate enough ring wear to cause
>the smoke? With the low mileage the car has been driven, it would seem
>unlikely but
>possible. If the cause is carbon buildup because of the low and slow
>useage, is there something I can pour through it that might clean it up?
>Thanks in advance.
>TR6 -- Spring!
>TR4 -- Sprang
>uncle jack -- Sprung

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