just a quick question on setting the timing on a sierra. actually several questions.
with the vac advance should there be any vac to when at idle?
What is the correct way of setting the advance?
whats the correct settin for the timing?
Cheers B4T
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How too......corectly set timing
How too......corectly set timing
1999 SQ625 Manual Grand Vitara. Lifted, Twin Locked, 31' Extremes, dual Batteries, Winch.
Lots of custom gear as I cant afford the proper stuff.
Lots of custom gear as I cant afford the proper stuff.
Your actually ment to disconnect the vac advance when setting timing.
Use a timing light and through the inspection cover on the L/H side of the car.
Also what negatives would you get from your vac advance not working? would the timing just stay at 10 degrees at high revs? not advancing as the revs go up? which would affect combustion?
Sorry for the hijack.
Mitch
Use a timing light and through the inspection cover on the L/H side of the car.
Also what negatives would you get from your vac advance not working? would the timing just stay at 10 degrees at high revs? not advancing as the revs go up? which would affect combustion?
Sorry for the hijack.
Mitch
1989 LN106- 2" spring lift, 285 mt117's, 4.8's, front spartan high pinion'd, 6000k H/L HID
Re: How too......corectly set timing
The vac advance hose from carby should be disconnected from the diaphragm and plugged when doing the timing.built4thrashing wrote:just a quick question on setting the timing on a sierra. actually several questions.
with the vac advance should there be any vac to when at idle? NO
What is the correct way of setting the advance? With a timing light through the hole in the back of the block on the passengers side.
whats the correct settin for the timing? 10Degrees BTDC.
Cheers B4T
The vac advance hose is connected to a pin hole sized port in the carby just above the main butterfly, the more vacuum there is with throttle open the more it will advance up to about 34-36 degrees total (10 degree static plus 24-26 vac adv.).
If you look down the carby you can see the vacuum port.
Jas.
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