There is the math right there......24.5 centrifugal and 11 vacuum = 35
degrees advance..so 40 is 2 degrees under max..............

40 total is in spec.  Type 1 engines require 32 total.

Adam P
81  Westy "The Brick "
70 Single Cab "Whitey"
74 Beetle "Ol Yeller"
73 Transporter (STILL at paint shop)
1988 Vanagon Wolfsburg
75 Campmobile "for sale'
Used Vanagon Parts for sale (mostly aircooled)
----- Original Message -----
From: "Nemo, the Bus Captain" <nemobuscaptain@YAHOO.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, July 02, 2002 5:24 PM
Subject: Re: [T2] AFC injection problem

> 40 deg total advance !!!  IMHO its sems a bit
> high, ive heard the maximum its should be 32
> dgree on type 4 engine!!
>
> But not in VW's humble opinion.  Here are the
> specs from oldvolkshome.com for a 7.5btdc timed
> engine (note it's about the same for the 5 or 10
> atdc engines):
>
> "Timing Set At:: 7.5deg BTDC @ 850-950 rpm (Man
> Trans), 900-1000 rpm (Auto Trans) w/strobe,
> vacumm hose connected
> Advance/Retard Range: Vacuum: 8.5-11deg Adv @ 7.9
> In. Hg; Centrifugal: 8-13deg @ 1600 rpm,
> 20.5-24.5 @ 3400 rpm"
>
> Sooooooooooo............
>
> 7.5 btdc + 11 + 24.5 = 43 total advance at 3400
> rpm and full vacuum is within the high end of
> spec.
>
> I have no clue about timing a 009 or 050 on a t4
> and never intend to learn as neither can provide
> anywhere near this amount of advance.
>
>
>
>
>
>
>
> =====
> Peace and blessings,
> Nemo, the Bus Captain
>
> 74 Westy For Sale:  http://www.geocities.com/nemobuscaptain/index.html
>
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