Compression Testing and 914s

For all you Porsche 914 fanatics!

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lennyhope
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Joined: Fri Sep 14, 2007 10:45 pm

Compression Testing and 914s

Post by lennyhope »

I have a compression tester but getting the hose and threaded attachment in place is impossible it seems, without removing tinware......

Any ideas of adaptation for using the hose type connection??
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My Cool Convertible by Chris Haddon (May 2016)
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Other Cars: 2003 Nissan Cubic; 2002 Chrysler Sebring Convertible
914 KEV
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Re: Compression Testing and 914s

Post by 914 KEV »

The two deep spark plug holes on a 1.7 can be hard to attach the compression test gauge.

This is how I do it with my tester.

Hold up the compression tester by the gauge in one hand in front of you and dangle the rubber tube, now straighten the rubber tube.
Then place the other hand around the rubber hose just below the connector, keeping it ridged, lower it onto the hole. When it touches the spark plug hole in the head, using your other hand to twist the gauge dial and if at the angle is correct it will twist in.

If you tape a couple of splints on the hose, this will also keep it ridged.
914 Daily driver since 1990
lennyhope
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Re: Compression Testing and 914s

Post by lennyhope »

Might need a solid extension. Good idea about the splint but the hose starts spinning also when you try to tighten...
914 World 'Car of the Month' (June 2015)
My Cool Convertible by Chris Haddon (May 2016)
The Essential Enthusiasts Guide to the Porsche 914 by Richard Gooding (June 2016)

Other Cars: 2003 Nissan Cubic; 2002 Chrysler Sebring Convertible
johnfm
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Joined: Thu Apr 28, 2011 8:53 am

Re: Compression Testing and 914s

Post by johnfm »

Would a short length of plastic conduit do the job of stiffening the pressure testing hose?
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