Re: Velocity 16V Cam setup and 50mm manifold...

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

>I just talked to someone at velocity about thier article in Eurpean Car
>(ukk..i feel like a chump for buying that garbage)and the Shrick 260 intake
>and 276 exhuast cam combo is $710.00! In case you havnt read the article its
>poorly written as with most thier articles and contains some interesting
>dyno charts with different 16V cam set ups and they say how vital the 50mm
>intake manifold. This was repeated by the rep on the phone with me, velocity
>sells the new 50mm intakes for 800.00. He said I would see an increase with
>the cam setup on my current motor but to truly realize the gain I needed the
>50mm manifold. The european car aritcle starts with a 9A 2.0 16V with a
>mildly ported 1.8 head with a valve job and euro intake cam running Motronic
>chipped by GIAC. They state a 14hp increase running a TT race header and the
>50mm manifold. So, ymmv and this was a pretty built motor to start out with.
>
>Shannon Fenton

It's a rather bad article, I agree.  I'm still against the 50mm intake,
as we all know that running the TT race header alone is probably worth
a conservative 8-9 peak hp, and probably fattens up the midrange too.
I mean, they went from a 50mm intake and a friggin' TT race header to
the 40mm intake and a stock exhaust and lost 14 peak hp...well duh! :-)
The 50mm intake is all about peak HP, couple that with a free flowing
exhaust header and you make a more efficient air pump.

Slap on that 50mm intake and you probably knock out the midrange gains
made from the TT header and gain a whopping 5 more peak HP!  Only $800
for super low end doggyness, and dump my mid range...where do I sign up!?!?

:-)!

My only real world experience with the 50mm intake happened with Rich
Deede's car.  His car had a 50mm intake, Supersprint header, Supersprint
exhaust, 2L block, Schrick 266 cams, (ported head?) and stock 185/60 tires.
My car had a 'normal' TT system with cat, bored 2L, Schrick 260 cams, mildly
ported head, Motronic with a Garrett chip, and 205/45 tires.  You'd think
that Rich's car would probably walk away from mine with his slightly
better gear ratio (due to lower tire diameter), and superior high end
power delivered via the 50mm intake, header, and hotter cams....turned
out not to be the case.  During several side-by-side highway roll ons,
in 4th and 5th gear, our cars were totally even.  I mean really oddly
even, strange even...to see the road / world rushing by at 100mph+ and
the car next to you so totally still.  Ask Peter, he was there in
Richs' car and Jim was in mine.

Even the dorks at European car state that in conjunction with the right
cams, header, and exhaust, the 50mm intake can be a winner.  I'm
still of the mind that the same header, exhaust, cams and mildly ported
head are probably making better power with the 40mm below 5000 rpms...is
5-7 peak hp worth it at 6700 rpm?  But this is all just my opinion,
backed only by a small amount of experience, and knowledge of what seems
to work.  Good discussion though.

==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

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