Timing degrees and results and cautions...., Is 27 degrees it or can you deviate? |
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Timing degrees and results and cautions...., Is 27 degrees it or can you deviate? |
second wind |
Jan 21 2018, 02:46 PM
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#1
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Senior Member Group: Members Posts: 857 Joined: 30-December 10 From: Los Angeles, California Member No.: 12,543 Region Association: Southern California |
Hello out there......my car just got back on the road due to a bad coil and it was tricky to find as it still sparked the plugs....just not under compression. During wrenching we altered the timing and it is at 33 degrees btdc now. Car starts great and has tons of low end.....kind of stops pulling at 5,000 rpm with slight knocking. Replaced seemingly healthy vacuum lines to distributor and high end improved a bit and some knocking sound lessened. What are your experiences with not being at 27 degrees and what are the risks? Thank you very much. BTW.....not driving car for months is depressing and now driving is really a blast!! No wonder we are here.
gg |
VaccaRabite |
Jan 23 2018, 09:10 AM
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#2
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Figure out what the timing is as accurately as possible. I've had very good luck with using variable advance timing lights just using the "0" (or the TDC line) as my timing mark.
Time the car where it seems to be happiest. If you hear knocking under load, back off a few degrees. Too much timing will increase head temps, but so will too little. You want to find the sweet spot where the engine is happy. IIRC, for most engines that's between 27 and 32 degrees. After 32 degrees there is a problem that needs attending for a long living engine. Zach |
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