Quote:
Originally Posted by aureliusmax
You can perform a compression test with the engine on a stand, and apply electrical power to the starter. Some engines have the starter on the engine block (GM style V8s) and others have them bolted on the transmission side. You may need to also have the transmission bell housing installed to the engine block to install the starter.
The reading on the gauge won't be the same as a warmed up engine, it will be less.
What you would look for is minimum allowable difference between cylinders, and minimum compression for ignition.
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I don't think it was actually done in the following recent thread, but starting at post #21, here,
https://xoutpost.com/1175403-post21.html
there was some discussion about rigging up the starter without a full install. There, the M54 engine was in the car following a rear main seal install, and he wanted to start and run the engine without the transmission attached, to confirm the RMS was not leaking.
Discussion of rigging up a bracket to mount the starter, etc. May be helpful in letting you consistently spin the engine using the starter, with the engine not installed.