Re: regrinds/ euro intake cam??

[Brett Van Sprewenburg <brett@netacc.net>]

>I just checked out Ben's dyno:  Nice power for a 1.8.
>I noticed something that I have seen on all the 16v
>dyno's.  They all have a dip in the power just after
>3K.  Is there a logical reason for this.  That is kind
>of a bad place to have a "dip" as thats were most of
>us cruise at.
>
>btw Ben, you had a tt cat back. and (race dp?  magna
>flow muffler).
>
>Tony
>

As someone has pointed out already, this seems to be
something that happens when a more aggressive cam(s) are
added.  Look at Jim's curves, or Josh's.  If I remember
correctly, they don't show that torque dip around 3k. Air
velocity probably drops enough right there due to longer
duration on the intake cam...best answer I can think of.
I do know it probably doesn't have anything to do with
the electronics, as I have a similar dip there going from
CIS-E to Motronic.  Although, the Motronic took a big bite
out of it and made it not quite a severe.

http://www.netacc.net/~brett/bv-99vs2k.jpg  as a reminder.

==Brett

 \/  '84 Scirocco (ITB racer 2B) | "Hot VW's, take two home. They're small"
\/\/ '88 Scirocco 16v (Show), '92 Passat 16v (Winter+) | - brett@netacc.net

--
Email LIST problems to: scirocco-l-probs@scirocco.org. To unsubscibe send
"unsubscribe scirocco-l" in the message to majordomo@scirocco.org