Dizzy vacume connections

[jonnyg]

Ever since i have owned my T25 (1.9DG) i have noticed the two vacume pipes on the dizzy were disconnected and blanked off.

Whats the score with these? Is it better to run them connected and let the timing adjust or were they set up like that as standard for a reason??

Cheers

Jon

[Mocki]

if the vac advance on the dissy works (test by sucking on pipes to see if timing moves) then they need reconnecting i'd say. THere must be a reason for them being not connected, which maybe muppetry, or maybe more of an issue

[AngeloEvs]

disconnect mine and the engine stops, out of interest, does it run OK, go up hills,etc? Like Mocki says, might be a reason but that is strange unless you have some sort of modified ignition system.

[jonnyg]

this is the thing, on my old engine it was fine, if anything it pulled very well (had 100mph indicated in a littler T25 race)

On the new engine my van runs like a bag o "pooh"!!

Am thinking this could be part of the problem!

[AngeloEvs]

With no advance a normally set up T25 WBX'r would be running with retarded ignition timing at low speeds. I would check the timing using the normal ignition data (5 deg BTDC) and then reconnect the vacuum advance but expect the engine idling speed to shoot up and need re-setting. Is the Dizzy the correct one? The dizzy also includes bob weights which respond to centrifugal forces to correct/alter the advance curve and thats why I ask.