Date: Thu, 25 Dec 2003 23:30:46 -0500
Reply-To: Dennis Haynes <dhaynes@OPTONLINE.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <dhaynes@OPTONLINE.NET>
Subject: Re: 2.2L EuroCars Engine vs 2.1l Boston Engine
In-Reply-To: <009301c3cb61$f98e3aa0$6401a8c0@yoursz6x6sefxo>
Content-Type: text/plain; charset="us-ascii"
Here in NY, The CO must be 1.2% or under. Since we also have to do the
DYNO test on non Syncros, I have found the Cat is definitely needed to
reduce the NOx emissions when under load. Gearing changes and drastic
tire size changes have made the NOx test difficult to pass. Different
states and in our case counties have differing emissions and testing
procedures and limits. Everyone needs to find their local requirements
before considering any mods. If the O2 sensor circuit and the injectors
are working correctly, CO should average ~.5% before the Cat. If the Cat
is actually working, the output should be near 0.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of ROBERT DONALDS
Sent: Thursday, December 25, 2003 10:40 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: 2.2L EuroCars Engine vs 2.1l Boston Engine
Fellow vanagon types
The Eurocars people can't back up there claim of 115 hp. This is
hollywood horse power
I have been building engines for a long time and there story just does
not add up. The increase
of compression adds 4 percent to the engine per point of compression.
and
the very small increase in displacement is not going to make any Big
jumps in
power.
It sounds like the way they are inceasing the stroke is to offset
grind the rod journals and use a 30 under rod bearing. The higher
compression Ratio of 10 to 1 requires 98 octane to prevent preignition
and engine damage and this could cost power not make more dont try this
at home folks. so these claims just don't hold water folks and I am the
last one to knock anybody.
]The European 2.1 10 to 1 engine had Digijet and that injection did have
a different chip than the Us version 1.9 engines. The diiferant Chip
adds allot more fuel than the US model. This is where the power comes
from this could also lower fuel economy when the van is driven
aggressively
I have this past weekend tested a European 10 to 1 Digijet chip on a
chassis dyno this added 20% power to my 84 van with 2.1 big valve engine
that was I must admit out of tune and sligthy down on power overall. I
think this chip is everything the phony balony ozzie chip wishes it was
(lots more fuel). some of you may remember that I dyno tested the ozzy
chip and the engine lost 4 hp and the air fuel ratio was way to lean.
Ken wilfy and I are looking into more copys of the digijet chip and
we will be offering them soon.
The camshaft I use in my big valve rebuilds is a minor reprofiled
reground from a stock 2.1 cam and with no cat it will easily pass smog
Co 1.67 Hc 141 at a hot idle. The main problem with going to a non stock
cam is when you have allot more duration this disrupts the vacuum signal
and you cant have that with fuel injection systems and still have
driveabilty. I don't think eurocars is using a big cam to make power
It is easy to make claims of huge horse power and not so easy to back it
up
thats the real deal
Bob Donalds
Boston Engine Exchange
1 508 653 7229
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