TR4/4A Your procedure for checking out a new-used engine

[tdskip]

Hi - related to the other thread on pulling the engine (here) I wanted to ask how you approach checking out a new-old engine. I was able to track down a said to run engine from a Triumph-guy out here for a very fair price. Engine turns freely, has compression based on the highly scientific and ultra precise thumb over the spark plug opening test and had oil in it. Old, dark, thick-ish oil, but oil none the less. Valve assembly looks to have been receiving oil flow and the weep holes are all clear.

Yes, yes, I know. Total flier on this engine, understand that. Also understand that I should be expecting to only use it as a core, and that is the plan since the original engine from the car was totally sized up (here).

So - in case I am feeling lucky how would you go after this?

Best early but not too early wishes for a Happy Thanksgiving.

 

[TomMull]

Any history on it? If it is only for a core, there is not much that might go unnoticed with the possible exception of a crack somewhere, which usually requires disassembly to find. I've bought a couple, expected the worst, and was always pleasantly surprised. Tom

Tom

 

[tdskip]

Hi Tom. That is the hope, these are tough engines.

Should I slap a starter on it on it after fresh oil and filter and spin it over a bunch and see how it does?

 

[Marvin Gruber]

Put a starter on and spin away. If oil pressure comes up and no unusual noises put carbs on and crank. I've run many 3/4 engines on the floor. Run it until you can't lay you hand on it and then shut it down.

Marv

 

[tdskip]

Sounds like a plan Marv!

Thanks.

 

[TomMull]

Agree, good plan. It will take some time to get oil pressure using the starter and a dry filter (I haven't found a clean way to fill the filter before it goes on). It is almost as easy to take off the pan and head but not as much fun.
Tom

 

[Lukens]

Compression... gotta have it.