ignition timing

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Bill G.
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Posts: 125
Joined: Jul 12th, '06, 08:15

ignition timing

Post by Bill G. »

I have a set of 230 merc small blocks have allways set the timing a couple of degrees behind, 6 deg. vs 8 deg with the thought of no pinging and engine life.Do I have much to gain going to the manufacturers spec of 8 deg.? any pros or cons?. txs,
Bill G.
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John F.
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Joined: Jun 29th, '06, 07:58

Post by John F. »

I've kept my 454s at the factory 8 degrees BTDC, and they've last a long time. I've also been told that as long as everything is working right, its more important to set for proper timing at full advance--I forget the rpms/degrees, but I can look it up for you. Last couple of times I checked, when I timed at 8 BTDC I got what I was supposed to get at whatever the high rpm setting was, so I just check to get 8 at idle...and somehow they still run.
DRIFTER31
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Joined: Jun 1st, '07, 20:40
Location: Lafitte Louisiana

Post by DRIFTER31 »

You will create a little more power at 8degrees and the engine will be happier. Read the spark plugs.Set at 8 and install a new set then run hard for a bit let cool down and check color. they should be a nice tan/light brown color.
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