[200q20v] Re: how to build an intake pressure tester(20vt)
tquattroguy at yahoo.com
Sun Aug 27 12:27:43 EDT 2000
Just a thought but at higher pressures than 1 Bar manifold (2 bar absolute) Did I get that right??? At any rate, at higher pressures its easier to diagnose leaks. Like at say 2 Bar Man Pressure. Fine if you have a 3 Bar ECU but fi you don't its pretty easy to pop off the vacuum line from the ECU and plug it. THen you dont have to worry about it, just dont go so high you blow hoses.
Brett Dikeman <quattro at pdikeman.ne.mediaone.net> wrote:
In a burst of inventiveness, I measured the diameter of the intake
hose on my 200q20v(other cars with maf sensors probably use the same
diameter.) I then when rummaging through the kitchen drawer with my
ruler and discovered to my great joy that a common household item
fits this hose -perfectly-.
It is a rubbermaid 1-cup "servin saver" container. I had originally
thought the top of the container would fit, but it was too wide and
wouldn't fit; I flipped it around and discovered the base of the
container is -perfect-; it's even beveled to make fitting it a
breeze. Pop it on, tighten the clamp, you're done.
To make your very own intake system tester, just install a compressor
nipple in a container you went and PURCHASED rather than stealing
from the kitchen(whereas I can escape my mother's wrath by fleeing
back to NY, I suspect those married individuals on the list do not
have such a luxury :-) I think I've also heard of people installing
tire stem valves(for trucks tires, I think.)
And, as I believe Chris Miller pointed out on the 200 list, be sure
you don't do anything foolish like pressurize the system above the
limits of the ECU's pressure sensor; 2 bar in the case of a stock
200q20v ecu, 2.5 bar in most modified units. Now, just pressurize
the intake system with a compressor(if you have a setup with a tank,
that will probably make listening for leaks easier; one good reason
to go this route and not do a tire stem.) You may want to purchase a
very cheap low-range pressure gauge(boost gauge from parts-r-us or
something), drill a hole in the side of the container, and
install...so that you can make sure you don't exceed a safe pressure,
and you can watch to see how fast the pressure drops.
Brett Dikeman Systems Engineer
CFN(formerly iClick, Inc) 914-872-8043
120 Bloomingdale Rd. 914-872-8100(fax)
White Plains, NY 10605 http://www.iclick.com
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