You got it backwards. Bentley says 5 ATDC, try as much as 5 BTDC. 5 BTDC is the same distance to the left of the TDC as the notch is to the right. Clear as mud.
Chuck Mathis <CMathis227@aol.com> on 05/07/2001 02:22:58 PM Please respond to CMathis227@aol.com To: vanagon@GERRY.VANAGON.COM cc: (bcc: Jay L Snyder/AE/DuPont) Subject: Re: 1.9L timing help
Chad, Bentley says 5 degrees BeforeTopDeadCenter and VW provided a convenient v-notch in the pulley for this. There is also a half round notch in the middle lip for TopDeadCenter -- as you face the engine from the back it is a little finger width to the right of the BTDC mark. Some folks have advocated going to 5 or 6 degrees AfterTopDeadCenter. This would be about a little finger width to the right of the TDC mark. To do this you have to monkey with the idle speed screw. I tried this with my '85 automatic this weekend and it didn't work out all that well. The engine idled nicely but died as soon as I slipped it in gear. I changed the timing back to TDC (readjusting the idle accordingly) and it is much more drivable. Runs smooth, power is good and the hesitation is almost gone. I do need to add a caveat that I have a fairly rotten AFM and throttle position switch. The AFM is very clean and I've shifted the board as far as it will go but when the multimeter should be reading a smooth progression the needle is all over the dial. I'll try retiming again when I have the new AFM and TPS installed. Chuck '85 Wolfsburg Westy -- 'Roland the Road Buffalo' In a message dated Mon, 7 May 2001 12:04:48 PM Eastern Daylight Time, Chad G <groch@worldchat.com> writes: << all this discussion about timing........I feel like my van could be running better (more power etc). I'm taking it to the mechanic today..........where should I tell him to set timing at? thanks, Chad 85GL >> |
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