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Date:         Thu, 2 May 2002 20:04:15 EDT
Reply-To:     Cotsford@AOL.COM
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Steve Cotsford <Cotsford@AOL.COM>
Subject:      Re: Advancing timing for more power, was: Boston Bob's web site
Content-Type: text/plain; charset="US-ASCII"

I too run my 1.9 l at 5 deg BTDC, ever since I saw that the Euro spec for that year '84 was 10 deg BTDC. I know that the gas in USA may not be of the same octane etc. I also think the compression ratio is higher in Europe too.

I still maintain that it's the total advance that really matters, under load at that. Probably this is what should be checked with a timing light. I admit I havent done it though. Idle timing can be where it wants to be.

Probably the ignition is retarded on US vehicles for emissions reasons and some power is thus sacrificed. If the engine doesn't ping under heavy loads, its probably safe. Mine doesn't. I enjoy the little extra pick-up and I get 20 -21 mpg on regular gas with a/c. It doesnt seem to improve without a/c. Most of my cruising is 70 -80 mph.

Cheers, Steve Cotsford


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