Advice needed on timing on dx 1.8 k jet golf gti

Cabriolet

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Hi there have recently replaced cam belt that side of its all ok
Want to find out a little more information on using my timing light as a lot of my manuals say conflicting stuff on degrees and the vacuum pipe on or off
I have a 1992 golf cabriolet 1.8 gti bosch kjet manual transmission. With I think a transistorised distributor.
I have found the tdc mark and 6 degrees btdc
At the moment I have warmed up engine removed and plugged the vacuum pipe  at tick over 950 rpm and lined up the 6 degrees timing mark.
Could some of you golf experts advice me if the vacuum pipe should be on / off
And what revs?  
As too high mechanical advance would start happening


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vacuum pipe off and plugged, 6 degrees BTDC for kjet engines

Reason you see both is for carb engines the dizzy vac line is left on, engine timed to 18deg BTDC

rubjonny said

vacuum pipe off and plugged, 6 degrees BTDC for kjet engines

Reason you see both is for carb engines the dizzy vac line is left on, engine timed to 18deg BTDC

Thanks for that what engine revs would you recommend

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just at idle for both, 950rpm will be fine. you can usually add a bit extra advance if you're runnign it on decent fuel

rubjonny said

just at idle for both, 950rpm will be fine. you can usually add a bit extra advance if you're runnign it on decent fuel

Many thanks for the advice

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FYI… The set up mentioned above is if you are running on super unleaded which is this the best fuel to use to get the best out of the engine.
I believe that normal unleaded needs the timing retarded by 6 degrees.