Steve,
That is exactly what I mean.
>From the manual and several other sources I seem
to understand that the maximum mechanical advance for the
the 3.5 SD1 whether or not modified should be 22 degrees BTDC.
That would be the figure for a efficient 4-valve engine so I'm puzzled
and therefore I asked about real experiences proven on the dyno
or chassisdyno what the actual advance figures should be.
Hope there will be some more comments on this subject.
Lex van Opstal.
-----Oorspronkelijk bericht-----
Van: steve bridge [mailto:slbridge@hotmail.com]
Verzonden: donderdag 19e ktober 2000 19:51
Aan: RoverNet Mailing List
Onderwerp: Advance curve Vitesse/EFI
Unless there is something unique about a 3.5, it should make more timing
i.e. 36-40 degrees total @ 3500+ rpm.
Two degrees equals 1/10 of a second in the 1/4 mile.
I use a vaccuum gauge to find the most vaccuum and then go from there.
Advance the timing until you get a ping going up a hill and then back it
off.
Most distributors add about 24 degrees of advancement to be added to the
static ( 8 - 12 degrees depending on altitude)
Rule of thumb: at idle, add two degrees to factory specs. for every thousand
feet of elevation.
sd steve
>From: "Tom Walker" <pheatsol@pheatsols.com>
>Reply-To: "RoverNet Mailing List" <rovernet@lyris.ccdata.com>
>To: "RoverNet Mailing List" <rovernet@lyris.ccdata.com>
>Subject: [rovernet] Re: Advance curve Vitesse/EFI
>Date: Thu, 19 Oct 2000 11:21:28
>
>Hey Lex
>
>I only know 2 figures that I go by all the time, they are 8 degrees BTDC at
>idle (800RPM) and 28 degrees at 4000rpm.
>
>Hope that helps.
>
>Tom Walker
>Melbourne, Australia
>1985 Vanden Plas
>1985 Vanden Plas EFi
>
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