Cars


Mini Rebuild

 

Step 7 - Compression Test (Attempt #1)

 

Tuesday, July 15, 2008:

 

Time to find out what condition this motor is really in. The first way I can think of is a compression test. I've never actually done one so I thought it would be interesting to give it a try. Before I began, I read this informative post on the R1-Forum. Out in the garage, I took a quick peak down the intake and exhaust ports. No debris found and the valves (3 intake and 2 exhaust on this engine) all looked ok.

Mini Rebuild Step 7

 

Mini Rebuild Step 7

I purchased this compression check kit which included the correct adapter for the spark plug holes of this motor.

Mini Rebuild Step 7

The next step was hooking the wiring harness back in. And that's when I ran into some snags. I have the entire main harness but I don't have the ignition key module, nor do I have the instrument panel sub-harness (referred to as the headlight harness). So much for getting this done tonight. I've got the parts on order now so the test will just have to wait until then.

Mini Rebuild Step 7

For my amusement (and reference), I obtained a copy of the original Mk1 dimensional blueprints and tacked it up in the garage. It has already come in handy while shopping for seats, ensuring that I didn't purchase anything too wide.

Mini Rebuild Step 7

An interesting find is that the Mini was designed with a rear track that is 2 inches narrower than the front. I can't think of any other car with such an arrangement. Truly a unique automobile.

 

Continue to Rebuild Step 8

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