83 CJ7 veci label......help

kc100478 · Member Joined: 02 Mar 2009 Location: florida

I am timing and tuning my 83 CJ7 with 258 Inline six and weber carb. I have had the jeep sitting for over a year while restoring and doing a frame off. I want to start timing this motor at the factory specs and then fine tune from there. I cannot find the vehicle emissions control label that is under the hood it has long since disappeared. I have a hanes manuel and chilton but they differ and I get all different info from people on the web. Could someone send me a picture of the underhood VECI Label to an 83 cj7 so I can get this thing back on the trails. Thank you for any help given, my email is kcarrier513@yahoo.com

Orangeamc13 · Posted: Tue Mar 03, 2009 10:10 am Post subject:

I would take a pic of mine for you, but it originally came with a 4 cyl.. Someone swapped in an I6, before I bought it. What are the specs the chilton and haynes are giving you?
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kc100478 · Member Joined: 02 Mar 2009 Location: florida

The books are giving me 8 deg BTDC at 600 rpm's, but they have a disclaimer to rely on the vehicle VECI label. Another guy online told me 9 deg BTDC but at 1300 rpm's. I need a really reliable starting point. And Im also doing all my timing with the vacuum advance disconected and plugged.

hutchman · Captain Kirk Joined: 07 Feb 2007 Location: Kennewick, WA

8 degrees...........9 degrees.........crap it really doesn't matter. The difference is outside of the accuracy of the timing marks or what ever you are using to time the engine. Static timing will make a difference in how it runs, but it will not be a show stopper when set at 8 degrees.

That should be great place to start.

kc100478 · Member Joined: 02 Mar 2009 Location: florida

thanks for the help on the degrees of timing, could you let me know a good starting point for RPM's to begin timing at.

hutchman · Captain Kirk Joined: 07 Feb 2007 Location: Kennewick, WA

I like to have it idling fast enough to run smoothly but not so fast that the centrifugal advance weights extend. If it was mine, I would start at 700 - 800 rpm with the vacuum advance line plugged.

kc100478 · Member Joined: 02 Mar 2009 Location: florida

thats what I was thinking, 600 rpm sounded a little slow I will try to time it tommorrow at 8 deg while running at 800 rpm's I think that should about do it will post tommorrow if it runs nice. Also if I fine tune it in to anything else I will post final settings as well. Thanks for the help